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Digital voltmeter 344 portable DC electrostatic

Characteristics

Min.:  0 kV

Max.:  2 kV

Description

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Non-contacting voltmeters.

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Trek 344 electrostatic voltmeter

• 344sales.pdf
• Description
• Specifications

The Trek Model 344 is a precision electrostatic voltmeter for making noncontacting surface voltage measurements in the range of 0 to ±2 kV DC or peak AC.  Industrial applications include radiation effect  studies, R&D of the electrophotographic processes, and charge accumulation monitoring of the semiconductor production process.

The Model 344 patented probe design eliminates the need for close tolerance components. This significantly improves noise and drift performance, both in the presence of contaminating particulates and under conditions of high humidity and wide temperature ranges.

Line Supply Factory set for one of three ranges: 100, 115, or 230 V AC, at 48 to 63 Hz (specify when ordering).

Operating Conditions Temperature 0°C to 40°C.

Relative Humidity To 90%, noncondensing.

Dimensions 64 mm H x 220 mm W x 270 mm D (2.5" H x 8.7" W x 10.6"D).

Weight 2 kg (4.4 lb).

Voltage Monitor Connector BNC coaxial connector.

Ground Receptacle Banana jack.

AC Line Cord Receptacle Standard three-prong line cord receptacle.

Power ON/OFF A toggle switch

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Trek 821HH hand-held electrostatic voltmeter

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Model 344 ordering information, Model 344 accessories probes – Trek 344 DC Stable Electrostatic Voltmeter User Manual

• Original mode

Model 10/40A Specifications

Model 344 Specifications

Model 344 Ordering Information

Copyright ã 2011 TREK, INC.

All specifications are subject to change.

Performance

Features (cont.)

Certification

Measurement Range

Zero Control

Voltage Display

0 to ±2 kV DC or peak AC.

A ten-turn control to null offsets that may

3½ digit LED display.

be present at the voltage monitor output

when the 344 is measuring zero volts.

0 to ±999 V.

Voltage Monitor

Better than ±0.05% of full scale.

Response Control

A ten-position push-button switch that

Zero Offset

Better than ±0.1% of full scale,

adjusts the gain of the 344 to optimize the

referred to the voltage monitor.

AC response. The response control is normally adjusted when changing the type

Speed of Response (10% to 90%)

of probe being used or when changing the

Less than 3 ms for a 1 kV step change.

probe-to-surface separation.

64 mm H x 220 mm W x 270 mm D

Voltage Monitor Output

(2.5" H x 8.7" W x 10.6" D).

Drift with Time

A buffered BNC output providing a low-

Less than 100 ppm/hour,

voltage replica of the measure voltage.

2 kg (4.4 lb).

noncumulative.

Voltage Monitor Output Connector

Drift with Temperature

1/100th of the measured voltage.

BNC connector.

Less than 100 ppm/°C.

(1/200th and 1/1000th ratios

Ground Receptacle

are available.)

Banana jack.

Output Noise

AC Line Cord Receptacle

Less than 2 mV rms (measured with

Standard three-prong line cord receptacle.

the true rms feature of the Hewlett

Line Supply

Packard Model 34401A digital

100, 115, or 230 V AC ±10%, 50-60 Hz

multimeter).

(specify when ordering).

Output Impedance

Less than 0.1 W.

TREK, INC. certifies that each Model 344 is

Operating Conditions

tested and calibrated to specifications using

Temperature

Probe-to-Surface Separation

measurement equipment traceable to the

0 °C to 40 °C.

2 mm ± 1 mm

(recommended).

National Institute of Standards and

Relative Humidity

Technology. A Certificate of Calibration

To 90%, noncondensing.

accompanies each instrument when it is shipped from the factory.

All specifications are with a 6000B-8 probe at a probe-to-surface separation of 2 mm.

Accessories

Standard Resolution Model 6000B-7C (end-viewing, round body) . . . . . . . . . . . . . . . 17053

±2 kV Electrostatic Voltmeter (100 V AC) . . . . . . . . . . . . . . . . . . . 344-F

Model 6000B-8 (side-viewing, round body) . . . . . . . . . . . . . . . . 17054

±2 kV Electrostatic Voltmeter (115 V AC) . . . . . . . . . . . . . . . . . . 344-G

Model 6000B-15C (end-viewing, square body) . . . . . . . . . . . . . 17046

±2 kV Electrostatic Voltmeter (230 V AC) . . . . . . . . . . . . . . . . . . 344-K

Model 6000B-16 (side-viewing, square body) . . . . . . . . . . . . . . 17047

1/100th voltage monitor ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344

High Resolution

1/100th voltage monitor ratio with rear panel probe connector 344-1

Model 6000B-5C (end-viewing, round body) . . . . . . . . . . . . . . . 17051

1/1000th voltage monitor option . . . . . . . . . . . . . . . . . . . . . . . . 344-6

Model 6000B-6 (side-viewing, round body) . . . . . . . . . . . . . . . . 17052

1/200th voltage monitor option . . . . . . . . . . . . . . . . . . . . . . . . . 344-9

Model 6000B-13C (end-viewing, square body) . . . . . . . . . . . . . 17044 Model 6000B-14 (side-viewing, square body). . . . . . . . . . . . . . 17045

Model 555P-4 (end-viewing, square body) . . . . . . . . . . . . . . . . 17205

Model 555P-1 (side-viewing, square body) . . . . . . . . . . . . . . . . 17184

Operator's Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23012

High Temperature (up to 100 C)

Line Cord (100 V AC and 115 V AC) . . . . . . . . . . . . . . . . . . . . . . N5002

Model 6300-7 (end-viewing, square body) . . . . . . . . . . . . . . . . 17287

Optional 611RA 19-inch Rack Adapter (2 instrument capacity)C5006

Model 6300-8 (side-viewing, square body) . . . . . . . . . . . . . . . . 17288

6003B Probe Line Driver (required when a very long probe extension cable is used) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17126 6004B-EC Probe Extension Cable (from 344 to line driver) . . . 17102 6005B-EC Probe Extension Cable (from 344 to probe). . . . . . . 17127

TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK

(fax) • www.trekinc.com • [email protected]

716-438-7555 • 716-201-1804

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Trek Electrostatic Voltmeter Instruments 2 Pages

Catalog excerpts

About Trek: A Successful Company with Acknowledged Leadership Qualities Founded on Technology TREK, INC. was established in 1968 to serve the needs of the electrophotography industry for highly accurate, stable, costeffective measurement instrumentation and devices. Novel probe design technology provided the foundation for the company's first electrostatic voltmeter, which quickly became the industry standard. Trek's design ensures highly accurate measurements under extreme conditions. Growth through Innovation In the decades that followed, Trek established itself as a designer and manufacturer of high quality instrumentation. Innovative designs and unique solutions have fueled product development over the years. Trek developed the world's first allsolid-state, high-voltage, high-speed, DCstable amplifier, which is now the product of choice for medium-current ion implantation systems in semiconductor fabrication facilities around the world. As a result of Trek's close working relationship with its customers, new designs are constantly being created to answer the needs of industry and R&D. Technical Expertise and Application Knowledge Our scientifically based measurement expertise, coupled with our application knowledge, has enabled us to establish an enviable position in the markets we serve. We are the experts when it comes to highly accurate measurement instruments and high voltage amplifiers, and the technology that drives them. Customers can depend on Trek to understand both the technical and practical aspects of an application. In many cases Trek is viewed as a virtual member of the customer's product development team. Investing in the Future In response to the needs of the marketplace, Trek recently established the Trek Technology Center in Lockport, NY as a facility for R&D and Engineering. In addition, a close working relationship with the nearby State University of New York at Buffalo assures that Trek has access to an extensive array of testing equipment and expertise to complement Trek's internal capabilities. To enable future growth for the company, Trek's headquarters and manufacturing recently relocated to a refurbished 40,000 sq ft facility, also in Lockport. TREK, INC. Precision Measurement of Electrostatic Voltage Enabled by Trek Electrostatic Voltmeter Instruments Novel Probe Design Trek is an expert in utilizing technology to enable the precise measurement of electrostatic voltage and was the pioneer in noncontacting measurement methods for the electrophotography industry. A novel approach to probe design provided the foundation for the company's first electrostatic voltmeter, which quickly became the industry standard. Trek voltmeters, both then and now, utilize a design that ensures highly accurate measurements under extreme conditions, differentiating them from other products in the marketplace. Model 6000B-7C Probe Performance in Diverse Applications Trek noncontacting electrostatic voltmeter instruments are high performance devices that provide outstanding measurement speed and accuracy along with high surface resolution and no arc over. The voltmeter probes are designed to be less sensitive to dust particulates, enabling usage in diverse applications. Probe options include high temperature, high sensitivity, high resolution, transparent, miniature, and vacuumfriendly designs. Options also exist for probe aperture size, end/side view detection and body shape. Trek has a well-respected reputation for excellence. We are the premier resource for electrostatic measurement and highvoltage solutions due to our product leadership and engineering excellence. Committed to the Global Marketplace Model 341B Electrostatic Voltmeter Long before globalization was popular, TREK, INC. established Trek Japan KK in Tokyo, Japan for the purpose of providing sales, application engineering support and service to customers in Japan and elsewhere in the Pacific Rim region. A global sales and service network now exists enabling Trek to serve the needs of customers throughout the world. Capability Beyond Industry Norm Trek's standard capabilities go well beyond the norm for others in this industry. What others call special, we call standard. Trek electrostatic voltmeters provide measurement ranges up to ±20 kV, accuracies to the millivolt level, and speed of response to 50 microseconds for a 1 kV step. And Trek can go beyond what we call standard, to address application-specific requirements on a custom basis. Model 370 Electrostatic Voltmeter Ideal for Critical Operations Trek's electrostatic voltmeters are ideally suited for use in critical operations associated with electrophotography, semiconductor, LCD and other processes where voltages need to be precisely measured and controlled for process optimization, or where charge accumulation (and electrostatic discharge events) pose a threat to production yields or product quality. By placing Trek's instruments on-line within a process, real time feedback and control is possible. Product Innovations for the Future ® Trek’s ultra-high impedance Infinitron voltmeter technology advances the state of the art, enabling precision and accuracy when an application requires surface contact measurements with virtually zero charge exchange upon probe contact. This need for site-specific contacting measurement is taking on a greater importance as electronics are miniaturized, and other critical surface phenomena are being scrutinized. TREK - Experts in Electrostatic Measurement and High Voltage Power Amplifiers TREK, INC. 190 Walnut Street • Lockport, NY 14094 • 800-FOR TREK 716-438-7555 • 716-201-1804 (fax) • www.trekinc.com • [email protected] Measurement and Power SolutionsTM www.trekinc.com TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK 716-438-7555 • 716-201-1804 (fax) • www.trekinc.com • [email protected]

Electrostatic Voltmeter Selection Table ESVM Model Output Voltage Range (DC or peak AC) Voltage Monitor Output Accuracy (better than) Probe Models (order separately unless otherwise noted) 3450 Standard 3453/3455 High-Temperature, High-Vacuum Speed of Response (10-90%) (less than) 3800 Miniature 3870 High-Speed 7000 Standard Special Features Typical Applications High voltage, high speed Electrostatic research & development, charge accumulation monitoring of LCD production processes, monitoring surface potentials in electrostatic painting processes, electrostatic potential measurement on...

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Trek 344 User Manual

DC-Stable Electrostatic Voltmeter

The Trek Model 344 is a precision electrostatic voltmeter for making noncontacting surface voltage measurements in the range of 0 to ±2 kV DC or peak AC.

The Model 344 employs a field-nulling technique for noncontacting voltage measurement that achieves DC stability and high accuracy even if the probe-to-surface spacing changes. This permits measurements of either stationary or moving surfaces without the need to establish fixed spacing to maintain accuracy.

The Model 344 patented probe design eliminates the need for close tolerance components. This significantly improves noise and drift performance, both in the presence of contaminating particulates and under conditions of high humidity and wide temperature ranges.

A precision voltage monitor provides a low-voltage replica of the measured electrostatic potential for monitoring purposes, or for use as a feedback signal in a closed-loop system.

The Model 344 can be operated on a bench top or, with optional hardware, in a standard 19-inch rack. The rack adapter allows two 344 units to be mounted together.

! Measurement Range:

DC or peak AC

! Accuracy:

Better than 0.05% of full scale

! Speed of Response: Less than 3 ms for a 1 kV step

! Low noise and drift performance

! A variety of probes are available for different installation requirements

! Precision voltage monitor output

The Digital Enable feature provides a connection for a remote device to turn on and off the high voltage of the instrument. This makes the 344 suitable for automated or computer-controlled systems.

! Easy-to-read LED display

The Model 344 is designed to be operated on a bench top.

Measurement and Power Solutions TM

www.trekinc.com

2018 Primetime Emmy & James Beard Award Winner

In Transit: Notes from the Underground

Jun 06 2018.

Spend some time in one of Moscow’s finest museums.

Subterranean commuting might not be anyone’s idea of a good time, but even in a city packing the war-games treasures and priceless bejeweled eggs of the Kremlin Armoury and the colossal Soviet pavilions of the VDNKh , the Metro holds up as one of Moscow’s finest museums. Just avoid rush hour.

The Metro is stunning and provides an unrivaled insight into the city’s psyche, past and present, but it also happens to be the best way to get around. Moscow has Uber, and the Russian version called Yandex Taxi , but also some nasty traffic. Metro trains come around every 90 seconds or so, at a more than 99 percent on-time rate. It’s also reasonably priced, with a single ride at 55 cents (and cheaper in bulk). From history to tickets to rules — official and not — here’s what you need to know to get started.

A Brief Introduction Buying Tickets Know Before You Go (Down) Rules An Easy Tour

A Brief Introduction

Moscow’s Metro was a long time coming. Plans for rapid transit to relieve the city’s beleaguered tram system date back to the Imperial era, but a couple of wars and a revolution held up its development. Stalin revived it as part of his grand plan to modernize the Soviet Union in the 1920s and 30s. The first lines and tunnels were constructed with help from engineers from the London Underground, although Stalin’s secret police decided that they had learned too much about Moscow’s layout and had them arrested on espionage charges and deported.

The beauty of its stations (if not its trains) is well-documented, and certainly no accident. In its illustrious first phases and particularly after the Second World War, the greatest architects of Soviet era were recruited to create gleaming temples celebrating the Revolution, the USSR, and the war triumph. No two stations are exactly alike, and each of the classic showpieces has a theme. There are world-famous shrines to Futurist architecture, a celebration of electricity, tributes to individuals and regions of the former Soviet Union. Each marble slab, mosaic tile, or light fixture was placed with intent, all in service to a station’s aesthetic; each element, f rom the smallest brass ear of corn to a large blood-spattered sword on a World War II mural, is an essential part of the whole.

The Metro is a monument to the Soviet propaganda project it was intended to be when it opened in 1935 with the slogan “Building a Palace for the People”. It brought the grand interiors of Imperial Russia to ordinary Muscovites, celebrated the Soviet Union’s past achievements while promising its citizens a bright Soviet future, and of course, it was a show-piece for the world to witness the might and sophistication of life in the Soviet Union.

It may be a museum, but it’s no relic. U p to nine million people use it daily, more than the London Underground and New York Subway combined. (Along with, at one time, about 20 stray dogs that learned to commute on the Metro.)

In its 80+ year history, the Metro has expanded in phases and fits and starts, in step with the fortunes of Moscow and Russia. Now, partly in preparation for the World Cup 2018, it’s also modernizing. New trains allow passengers to walk the entire length of the train without having to change carriages. The system is becoming more visitor-friendly. (There are helpful stickers on the floor marking out the best selfie spots .) But there’s a price to modernity: it’s phasing out one of its beloved institutions, the escalator attendants. Often they are middle-aged or elderly women—“ escalator grandmas ” in news accounts—who have held the post for decades, sitting in their tiny kiosks, scolding commuters for bad escalator etiquette or even bad posture, or telling jokes . They are slated to be replaced, when at all, by members of the escalator maintenance staff.

For all its achievements, the Metro lags behind Moscow’s above-ground growth, as Russia’s capital sprawls ever outwards, generating some of the world’s worst traffic jams . But since 2011, the Metro has been in the middle of an ambitious and long-overdue enlargement; 60 new stations are opening by 2020. If all goes to plan, the 2011-2020 period will have brought 125 miles of new tracks and over 100 new stations — a 40 percent increase — the fastest and largest expansion phase in any period in the Metro’s history.

Facts: 14 lines Opening hours: 5 a.m-1 a.m. Rush hour(s): 8-10 a.m, 4-8 p.m. Single ride: 55₽ (about 85 cents) Wi-Fi network-wide

Buying Tickets

• Ticket machines have a button to switch to English.
• You can buy specific numbers of rides: 1, 2, 5, 11, 20, or 60. Hold up fingers to show how many rides you want to buy.
• There is also a 90-minute ticket , which gets you 1 trip on the metro plus an unlimited number of transfers on other transport (bus, tram, etc) within 90 minutes.
• Or, you can buy day tickets with unlimited rides: one day (218₽/ US$4), three days (415₽/US$7) or seven days (830₽/US$15). Check the rates here to stay up-to-date.
• If you’re going to be using the Metro regularly over a few days, it’s worth getting a Troika card , a contactless, refillable card you can use on all public transport. Using the Metro is cheaper with one of these: a single ride is 36₽, not 55₽. Buy them and refill them in the Metro stations, and they’re valid for 5 years, so you can keep it for next time. Or, if you have a lot of cash left on it when you leave, you can get it refunded at the Metro Service Centers at Ulitsa 1905 Goda, 25 or at Staraya Basmannaya 20, Building 1.
• You can also buy silicone bracelets and keychains with built-in transport chips that you can use as a Troika card. (A Moscow Metro Fitbit!) So far, you can only get these at the Pushkinskaya metro station Live Helpdesk and souvenir shops in the Mayakovskaya and Trubnaya metro stations. The fare is the same as for the Troika card.
• You can also use Apple Pay and Samsung Pay.

Rules, spoken and unspoken

No smoking, no drinking, no filming, no littering. Photography is allowed, although it used to be banned.

Stand to the right on the escalator. Break this rule and you risk the wrath of the legendary escalator attendants. (No shenanigans on the escalators in general.)

Get out of the way. Find an empty corner to hide in when you get off a train and need to stare at your phone. Watch out getting out of the train in general; when your train doors open, people tend to appear from nowhere or from behind ornate marble columns, walking full-speed.

Always offer your seat to elderly ladies (what are you, a monster?).

An Easy Tour

This is no Metro Marathon ( 199 stations in 20 hours ). It’s an easy tour, taking in most—though not all—of the notable stations, the bulk of it going clockwise along the Circle line, with a couple of short detours. These stations are within minutes of one another, and the whole tour should take about 1-2 hours.

Start at Mayakovskaya Metro station , at the corner of Tverskaya and Garden Ring,  Triumfalnaya Square, Moskva, Russia, 125047.

1. Mayakovskaya.  Named for Russian Futurist Movement poet Vladimir Mayakovsky and an attempt to bring to life the future he imagined in his poems. (The Futurist Movement, natch, was all about a rejecting the past and celebrating all things speed, industry, modern machines, youth, modernity.) The result: an Art Deco masterpiece that won the National Grand Prix for architecture at the New York World’s Fair in 1939. It’s all smooth, rounded shine and light, and gentle arches supported by columns of dark pink marble and stainless aircraft steel. Each of its 34 ceiling niches has a mosaic. During World War II, the station was used as an air-raid shelter and, at one point, a bunker for Stalin. He gave a subdued but rousing speech here in Nov. 6, 1941 as the Nazis bombed the city above.

Take the 3/Green line one station to:

2. Belorusskaya. Opened in 1952, named after the connected Belarussky Rail Terminal, which runs trains between Moscow and Belarus. This is a light marble affair with a white, cake-like ceiling, lined with Belorussian patterns and 12 Florentine ceiling mosaics depicting life in Belarussia when it was built.

Transfer onto the 1/Brown line. Then, one stop (clockwise) t o:

3. Novoslobodskaya.  This station was designed around the stained-glass panels, which were made in Latvia, because Alexey Dushkin, the Soviet starchitect who dreamed it up (and also designed Mayakovskaya station) couldn’t find the glass and craft locally. The stained glass is the same used for Riga’s Cathedral, and the panels feature plants, flowers, members of the Soviet intelligentsia (musician, artist, architect) and geometric shapes.

Go two stops east on the 1/Circle line to:

4. Komsomolskaya. Named after the Komsomol, or the Young Communist League, this might just be peak Stalin Metro style. Underneath the hub for three regional railways, it was intended to be a grand gateway to Moscow and is today its busiest station. It has chandeliers; a yellow ceiling with Baroque embellishments; and in the main hall, a colossal red star overlaid on golden, shimmering tiles. Designer Alexey Shchusev designed it as an homage to the speech Stalin gave at Red Square on Nov. 7, 1941, in which he invoked Russia’s illustrious military leaders as a pep talk to Soviet soldiers through the first catastrophic year of the war.   The station’s eight large mosaics are of the leaders referenced in the speech, such as Alexander Nevsky, a 13th-century prince and military commander who bested German and Swedish invading armies.

One more stop clockwise to Kurskaya station,  and change onto the 3/Blue  line, and go one stop to:

5. Baumanskaya.   Opened in 1944. Named for the Bolshevik Revolutionary Nikolai Bauman , whose monument and namesake district are aboveground here. Though he seemed like a nasty piece of work (he apparently once publicly mocked a woman he had impregnated, who later hung herself), he became a Revolutionary martyr when he was killed in 1905 in a skirmish with a monarchist, who hit him on the head with part of a steel pipe. The station is in Art Deco style with atmospherically dim lighting, and a series of bronze sculptures of soldiers and homefront heroes during the War. At one end, there is a large mosaic portrait of Lenin.

Stay on that train direction one more east to:

6. Elektrozavodskaya. As you may have guessed from the name, this station is the Metro’s tribute to all thing electrical, built in 1944 and named after a nearby lightbulb factory. It has marble bas-relief sculptures of important figures in electrical engineering, and others illustrating the Soviet Union’s war-time struggles at home. The ceiling’s recurring rows of circular lamps give the station’s main tunnel a comforting glow, and a pleasing visual effect.

Double back two stops to Kurskaya station , and change back to the 1/Circle line. Sit tight for six stations to:

7. Kiyevskaya. This was the last station on the Circle line to be built, in 1954, completed under Nikita Khrushchev’ s guidance, as a tribute to his homeland, Ukraine. Its three large station halls feature images celebrating Ukraine’s contributions to the Soviet Union and Russo-Ukrainian unity, depicting musicians, textile-working, soldiers, farmers. (One hall has frescoes, one mosaics, and the third murals.) Shortly after it was completed, Khrushchev condemned the architectural excesses and unnecessary luxury of the Stalin era, which ushered in an epoch of more austere Metro stations. According to the legend at least, he timed the policy in part to ensure no Metro station built after could outshine Kiyevskaya.

Change to the 3/Blue line and go one stop west.

8. Park Pobedy. This is the deepest station on the Metro, with one of the world’s longest escalators, at 413 feet. If you stand still, the escalator ride to the surface takes about three minutes .) Opened in 2003 at Victory Park, the station celebrates two of Russia’s great military victories. Each end has a mural by Georgian artist Zurab Tsereteli, who also designed the “ Good Defeats Evil ” statue at the UN headquarters in New York. One mural depicts the Russian generals’ victory over the French in 1812 and the other, the German surrender of 1945. The latter is particularly striking; equal parts dramatic, triumphant, and gruesome. To the side, Red Army soldiers trample Nazi flags, and if you look closely there’s some blood spatter among the detail. Still, the biggest impressions here are the marble shine of the chessboard floor pattern and the pleasingly geometric effect if you view from one end to the other.

Keep going one more stop west to:

9. Slavyansky Bulvar.  One of the Metro’s youngest stations, it opened in 2008. With far higher ceilings than many other stations—which tend to have covered central tunnels on the platforms—it has an “open-air” feel (or as close to it as you can get, one hundred feet under). It’s an homage to French architect Hector Guimard, he of the Art Nouveau entrances for the Paris M é tro, and that’s precisely what this looks like: A Moscow homage to the Paris M é tro, with an additional forest theme. A Cyrillic twist on Guimard’s Metro-style lettering over the benches, furnished with t rees and branch motifs, including creeping vines as towering lamp-posts.

Stay on the 3/Blue line and double back four stations to:

10. Arbatskaya. Its first iteration, Arbatskaya-Smolenskaya station, was damaged by German bombs in 1941. It was rebuilt in 1953, and designed to double as a bomb shelter in the event of nuclear war, although unusually for stations built in the post-war phase, this one doesn’t have a war theme. It may also be one of the system’s most elegant: Baroque, but toned down a little, with red marble floors and white ceilings with gilded bronze c handeliers.

Jump back on the 3/Blue line  in the same direction and take it one more stop:

11. Ploshchad Revolyutsii (Revolution Square). Opened in 1938, and serving Red Square and the Kremlin . Its renowned central hall has marble columns flanked by 76 bronze statues of Soviet heroes: soldiers, students, farmers, athletes, writers, parents. Some of these statues’ appendages have a yellow sheen from decades of Moscow’s commuters rubbing them for good luck. Among the most popular for a superstitious walk-by rub: the snout of a frontier guard’s dog, a soldier’s gun (where the touch of millions of human hands have tapered the gun barrel into a fine, pointy blade), a baby’s foot, and a woman’s knee. (A brass rooster also sports the telltale gold sheen, though I am told that rubbing the rooster is thought to bring bad luck. )

Now take the escalator up, and get some fresh air.

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Trek 4300 Mountain Bike: A Complete Review

August 31, 2023

‍ Key Takeaways

• The Trek 4300 is a hardtail mountain bike but a great entry-level model.
• The bike offers a comfortable riding position and adjustable saddle and handlebars.
• The bike comes with a complex 3X drivetrain, which may take some time to get used to.
• It has small 26-inch wheels, which may not be ideal for rough terrain or obstacles.
• Note that the Trek 4300 has been discontinued, but Trek has impressive newer models.

This article may contain affiliate links where we earn a commission from qualifying purchases.

‍ Are you in the market for a new mountain bike? The Trek 4300 Mountain Bike has been a popular choice for riders worldwide for its durability and reliability.

The Trek 4300 is a great bike for commuting and other everyday tasks. With its lightweight aluminum frame, 3x7-speed drivetrain, front suspension fork, and other features, this bike is also perfect for those looking to hit the trails with ease.

As a cycling enthusiast who has used the Trek 4300 mountain bike, I’m here to take you through the components, features, and overall performance of this bike. Don't just take my word for it - I'll provide an in-depth analysis of the Trek 4300 review, including the bike's strengths and weaknesses, so you can make an informed decision before making a purchase.

TABLE OF CONTENTS

‍ Specifications/Key Features of Trek 4300 Mountain Bike

If you are looking for a reliable entry-level mountain bike, the Trek 4300 is a great option to consider. Here are some of the key specifications of this bike:

• The Trek 4300 bike is a hardtail bike, meaning it has a suspension fork in the front but no rear suspension.
• It features a lightweight and sturdy Alpha aluminum frame, which makes it easy to handle.
• Features a Smart Wheel Size technology, meaning you can choose between 27.5-inch or 29-inch wheels depending on your height and riding style.

Frame and Forks

The Trek 4300 mountain bike has an aluminum frame that is lightweight and durable, making it perfect for rough terrain. The bike also features a suspension fork that absorbs shock and provides a smooth ride.

Brakes and Gears

The Trek 4300 comes with either rim brakes or disc brakes, depending on your chosen model. The disc brakes provide better stopping power and are more reliable in wet conditions, while the rim brakes are easier to maintain.

The bike also features a Shimano drivetrain with up to 24 gears, making it easy to navigate through different terrains.

Tires and Wheels

The Trek 4300 mountain bike is equipped with 26-inch wheels that are perfect for entry-level mountain bikers. The bike also features a variety of tire options, including knobby tires for off-road adventures and smoother tires for urban riding.

Performance and Ride Quality

When it comes to performance and ride quality, the Trek 4300 mountain bike is a great all-around option for both off-road and on-road use.

Let's take a closer look at how it performs in each of these environments.

Off-Road Performance

The Trek 4300 is designed to handle rough terrain, making it a great choice for off-road riding. The bike's suspension system helps to absorb shocks and bumps, providing a smoother ride even on the most challenging trails.

The bike's 26-inch wheels are also well-suited for off-road use, providing good traction and stability on loose or uneven terrain.

The Trek 4300 also has a 3X drivetrain, which provides a wide range of gears to help you tackle steep inclines and challenging terrain.

On-Road Performance

While the Trek 4300 is primarily designed for off-road use, it also performs well on the streets. The bike's suspension system helps to smooth out bumps and rough patches in the road, providing a more comfortable ride. The bike's 26-inch wheels are also well-suited for on-road use, providing good speed and agility.

One thing to remember is that the Trek 4300 is a mountain bike so it might be slower or more nimble than a road bike. However, it still offers good performance and control on paved surfaces, making it a versatile option for riders who want a bike that can handle a variety of terrain.

Comparisons with Other Bikes

When comparing the Trek 4300 to other mountain bikes, you will notice some differences.  I’ll take you through the most common mountain bikes:

Trek 4300 Vs. Schwinn

The Schwinn bike is an entry-level bike that is significantly cheaper than the Trek 4300. The Schwinn bike is also heavier than the Trek 4300, making it slightly harder to maneuver.

Trek 4300 Vs. Shimano

The Trek 4300 has a Shimano 9-speed drivetrain, which is a great feature for an entry-level mountain bike. However, when comparing the Trek 4300 to other bikes with Shimano components, you may notice some differences.

Overall, the Trek 4300 is a great option if you’re looking for entry-level mountain bikes that offer good value for money. While it may not have the same performance as higher-end models, it is a solid choice for anyone looking to get into mountain biking.

Maintenance and Durability

Maintaining your Trek 4300 mountain bike is crucial to ensure it remains in good condition and lasts long. Fortunately, this bike is known for requiring little maintenance, thanks to its high-quality components and sturdy frame.

The Trek 4300 is available in both steel and aluminum frames. While both options are durable, the aluminum frame is lighter and more resistant to rust and corrosion. Regardless of which frame you choose, proper maintenance is essential to keep your bike in good condition.

Regular maintenance includes cleaning your bike after every ride, checking the brakes and gears, and ensuring the tires are properly inflated. It's also important to inspect the bike for any signs of wear and tear, such as cracks in the frame or worn-out brake pads.

When riding on rough terrain, it's important to take extra care to avoid damaging your bike. Be sure to choose the appropriate gear and avoid putting too much stress on the bike's components.

If you need help with how to ride on a particular terrain, it's always a good idea to consult with an experienced rider or bike mechanic.

Another thing you can do to help extend the life of your Trek 4300 includes storing your bike in a dry, cool place to help prevent rust and corrosion. You should also avoid leaving your bike in direct sunlight for extended periods, as this can cause the paint to fade and the tires to dry out.

Price and Value for Money

When it comes to buying a mountain bike, price is always a major consideration. The Trek 4300 is an affordable option when compared to other mountain bikes in its class, making it a great value for the money.

The price of the Trek 4300 varies depending on the year and location of purchase. However, you can expect to spend anywhere from $300 to $600 for this bike. While this may seem like a lot of money, it is important to remember that the Trek 4300 is a high-quality mountain bike that is built to last.

Who Should Buy the Trek 4300 Mountain Bike

If you are looking for a reliable and affordable entry-level mountain bike, then the Trek 4300 could be a great option for you.

Here are some factors to consider when deciding if the Trek 4300 is the right bike for you:

Are You a Mountain Biker?

If you’re an experienced mountain biker, the Trek 4300 might not be the best fit for you. The bike is designed for beginners and casual riders who want to enjoy leisurely rides on forest trails, not experienced bikers.

The 4300 is a hardtail bike, meaning it has a suspension fork on the front but not on the back. This makes it suitable for light off-road use, but it may need help to handle more challenging terrain.

What Kind of Rider Are you?

If you’re a rider who wants a bike that can handle both on-road and off-road conditions, the Trek 4300 could be a great option for you. The bike has 26-inch wheels that provide a stable ride on different types of terrain.

The 4300 also features a Shimano 9-speed drivetrain that makes it easy for riders to switch between gears and find the right speed for their ride.

Are you a Beginner?

If you are new to mountain biking, the Trek 4300 is an excellent choice. The bike is easy to handle, and its lightweight design makes it easy for beginners to maneuver on the trails.

The 4300 also features hydraulic disc brakes that provide reliable stopping power, which is essential for beginners who are still learning how to control their speed.

Where to Buy Trek 4300 Mountain Bike

If you're interested in purchasing a Trek 4300 Mountain Bike, there are several options available to you. You can buy the Trek 4300 mountain bike from the Trek Bikes website , local bike shops, or online retailers like eBay .

If you're on a tight budget or looking for a good bike at a bargain, consider purchasing a used bike. Websites like Craigslist and Facebook Marketplace are good places to start your search. However, be careful to avoid scams.

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About THE AUTHOR

Danny Lawson

Mountain biking is more than just a hobby for me - it's a way of life. I love the challenge and excitement that comes with it, and I'm always pushing myself to go faster and ride harder. Some people might think that mountain biking is dangerous, but I see it as the only way to live.

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About PedalChef

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Trek 4300 Mountain Bike Review: Is it worth it?

Looking for a reliable and affordable mountain bike that can handle rugged terrain? The Trek 4300 might just be the bike for you. 

As a mountain bike, Trek 4300 is built to take on any adventure. Thanks to a durable aluminum frame, wide range of gears, and powerful brakes. 

In this article, we’ll take a closer look at the Trek 4300 mountain bike, its features, and what makes it stand out from the competition. 

Read on to find out if the Trek 4300 is the right mountain bike for you.

Trek 4300 Mountain Bike At A Glance 

Trek 4300 is a hardtail mountain bike with a lightweight and sturdy Alpha aluminum frame, which makes it easy to handle. While the Marlin 5 is made for trail riding, it’s also versatile and can double as a commuter bike. 

The Shimano drivetrain and powerful disc brakes offer great versatility on all types of terrain. While the front suspension provides excellent balance and stability on rougher roads or trails, ensuring smooth rides. 

It also comes with double-walled rims and puncture-resistant 26×2.0″ tires, making it a reliable choice for trail riding. 

Trek 4300 is the perfect combination of affordability and quality, which is a great choice for beginner riders looking to hit the trails.

• Sturdy and lightweight aluminum frame
• Responsive brakes and smooth shifting
• Comfortable riding position
• Adjustable saddle and handlebars
• Complex 3X drivetrain
• Small 26-inch wheels

Unfortunately, this bike has been discontinued, but Trek has impressive newer models with better designs which are excellent alternatives to the 4300 Trek mountain bike. 

We recommend Trek Marlin 5 and Schwinn Traxion as great alternatives, you can scroll down to see our brief review of these bikes. 

Trek 4300 Mountain Bike Features

Frame and fork.

First things first, the frame is a crucial component of any bike. In the case of the Trek 4300, it’s made of aluminum, which is a popular choice due to its durability, affordability, and lightweight. 

In fact, the original 4300 model used Trek’s Alpha Aluminum frame that’s tough enough to handle rugged trails with ease. As the model progressed, Trek introduced the Alpha Gold Aluminum material for the frame of the later versions of the 4300. 

This updated version has a more aggressive race geometry for speed, with internal cable routing for durability, and rack mounts for versatility.

You’ll also find that it has a replaceable derailleur hanger. Now, these upgrades made the bike more versatile and allowed it to handle a wider range of terrain.

Moving on to the fork, the Trek 4300 is a classic hardtail mountain bike with a front fork. This means that the front wheel is equipped with a suspension system that can absorb shocks and vibrations, making for a smoother ride on moderate terrain. 

The suspension fork has 70-100 mm travel, depending on the specific model, and it’s designed to handle mountain trails. However, it’s important to note that the suspension fork isn’t long enough to handle descents on rough trails. 

So while it can certainly absorb some bumps, it’s not enough for really difficult trails or downhill riding. But don’t worry, this bike can still take a lot of abuse. After all, it’s a mountain bike, and it’s designed to handle dirt trails.

Gears and Brakes

Gears and brakes are some of the most important components of a mountain bike, especially if you plan on hitting tough trails or climbing hills. 

Let’s take a closer look at the gear and brake systems on the Trek 4300 mountain bike.

In the first few generations of the Trek 4300, you could find a 3x8spd drivetrain with 24 gears.

But if you’re looking for something a bit more efficient, the later models of the Trek 4300 were fitted with the Shimano Acera M390 9-speed drivetrain. This gives you a wider range of gears for better control on hard trails.

Now, let’s talk about brakes. If you carefully look through all the different versions of the Trek 4300, you’ll find that some of them had rim brakes and some others had disc brakes. 

The older models were fitted with rim brakes, while the later models featured the Shimano M395 hydraulic disc brakes, which gives a much better braking power at a great price. 

Wheels and Tires

Most mountain bikes we see now have 29-inch wheels, but the Trek 4300 had 26-inch wheels and 26×2.20 tires, which actually are very agile and will quickly pick up speed. 

In later models, these tires were improved to be puncture resistant and could withstand increased tire pressure. 

We consider bigger wheels to be better for mountain riding, but small wheels aren’t that bad either because they are more agile, tend to accelerate faster and will easily move around tight corners. And these features are great for technical riding. 

But the bigger 27.5 and 29″ wheels actually provide more stability and comfort, which is why they are now preferred for mountain biking.

Despite the small wheels, the double-walled rims and 32-spoke design of the Trek 4300 are pretty solid and tough enough to withstand years of abuse on the trails.

At the end of the day, the wheels and tires on the Trek 4300 are a great combination for riders who want to tackle technical terrain and need a bike that can handle quick acceleration and tight cornering. 

While the market may be shifting towards larger wheels, the Trek 4300 is still a great option for those who value nimble handling and puncture resistance.

Saddle and Handlebars

The saddle is an important component of any bike, especially when it comes to mountain biking. 

While the standard saddle on the Trek 4300 may not be the most comfortable, the 31.6mm seatpost offers plenty of adjustment for a customized fit. 

You can even upgrade the saddle to one that suits your preferences for maximum comfort.

The handlebars of the Trek 4300 are a different story, though. Made from durable alloy, these handlebars are built to withstand the rigors of off-road riding. 

With a 31.8mm diameter and 15mm rise, the handlebars provide a comfortable and stable grip while you ride.

The stem of the Trek 4300 is also designed for both comfort and control. With a 31.8mm clamp diameter and a 10-degree rise, the stem ensures a comfortable riding position while keeping you in control of the bike. 

When you combine the Bontrager Riser handlebar and the Bontrager Approved stem on the Trek 4300, you get a comfortable and stable ride. 

Size and weight

When it comes to finding the right fit, the Trek 4300 Mountain Bike has got you covered. With a wide range of frame sizes available, from 13″ to 22.5″, you’re sure to find the perfect fit for your body type. 

Actually, you may find sizes ranging from 13, 16, 18, 19.5, 21.5, 23.5″. But since these bikes have been discontinued by Trek, finding them in the exact size you want may be a challenge.

One thing to keep in mind is that the bike weighs around 28.2lbs (12.8 kg), which might not make it the lightest bike on the market. I believe this is due to the front fork, which adds weight but also adds extra shock absorption for a more comfortable ride. 

However, this bike is sturdy enough to support riders up to 265 lbs of body weight.

Ride quality and performance

The Trek 4300 Mountain Bike offers fun and confident rides on the trails, whether you’re hitting the trails or cruising around town. 

While it’s considered an entry-level mountain bike, don’t let that fool you. It’s a reliable bike that can be used for commuting, leisurely rides, or for hitting some challenging trails.

The comfortable riding position and triple chainring setup make it easy to tackle steep hills and rough terrain. Plus, the high-quality suspension system keeps things smooth and comfortable, no matter what kind of surface you’re riding on.

Trek 4300 has durable components that are built to last, so you don’t have to worry about things breaking down quickly. 

The responsive brakes and smooth-shifting gears give you complete control and make riding this bike a breeze. And, even in wet or muddy conditions, the disc brakes offer reliable stopping power.

One of the best things about the Trek 4300 is its versatility. While it’s certainly a capable mountain bike, it’s also a great choice for commuting or everyday riding. 

Best Trek 4300 Alternatives

As Trek 4300 mountain bikes are now discontinued, you cannot buy them brand new. However, Trek has a range of trail bikes that offer superior build quality and performance. 

These models are more advanced and come at a higher price point than the budget options available from brands like Schwinn and Mongoose, but the investment is worth it as the quality is unmatched.

In my opinion, the Trek Marlin 5 and Schwinn Traxion are great alternatives for the Trek 4300 mountain bike.

Trek Marlin 5

Trek Marlin 5 is a trail mountain bike that’s built to gracefully handle daily adventures on rough terrains. It has a lightweight aluminum frame with a 2×8 drivetrain for smooth riding and shifting and powerful hydraulic disc brakes which provide fast and precise stopping. 

While the Marlin 5 is made for trail riding, it’s also versatile and can double as a commuter bike. This bike has a stunning frame with internal routing for the brake and shift cables, which can extend the lifespan of your wires by shielding them from the environment.

It’s the perfect bike for new trail riders and comes in seven frame sizes to fit riders of all heights. Marlin 5 is elegant and comfortable, with a ton of features that are typically reserved for more pricey bikes.

Schwinn Traxion

The Traxion MTB is equipped with a remarkably solid aluminum full-suspension frame that easily picks up speed and maintains it very well.

This bike provides comfortable rides and handles bumps well, regardless of where your trail adventures take you. Thanks to the wide knobby tires, sturdy double-walled aluminum rims, and a superb trail-taming Schwinn suspension fork. 

The 24 speed shifters also ensure fluid gear shifting, which makes for a fun and pleasant riding experience. In addition to that, the mechanical disc brakes lock into place instantly when applied, and this ensures precise and efficient stopping. 

The wheels have all-terrain tires and alloy rims for strength and low weight. Plus, you can easily adjust the height of the saddle using the quick release seat post to get your best fit. 

Related Post: Schwinn Traxion Mountain Bike Review

Finally, is Trek 4300 MTB a good buy?

The Trek 4300 mountain bike is a reliable and versatile bike that can handle a variety of terrains and riding styles. 

With its durable aluminum frame, wide range of gears, and powerful brakes, this bike is a great choice for both beginners and experienced riders. 

Trek 4300 offers a solid balance of performance and affordability. And if you’re looking for a reliable and budget-friendly mountain bike, the Trek 4300 is definitely worth considering.

You likely won’t find a brand-new Trek 4300, but the alternative options we included above are great choices too.

You may also like:

• Best Budget Mountain Bikes Under $400
• Best Budget Mountain Bikes Under $300
• Best Mountain Bikes for $1500 and below

Dial up your biking experience.

BikeCrunch’s content is for informational and educational purposes only.

As an Amazon Associate, we earn from qualifying purchases. However, this does not impact our reviews and comparisons. We try our best to keep things fair and balanced, in order to help you make the best choice for you.

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March 23, 2024 Shooting at Moscow concert venue leaves over 130 dead

By Chris Lau, Andrew Raine , Catherine Nicholls, Issy Ronald, Lauren Said-Moorhouse and Tori B. Powell , CNN

US warned Russia after steady stream of intelligence that ISIS-K was determined to attack, source says

From CNN’s Alex Marquardt, Natasha Bertrand and Jennifer Hansler 

Starting in November, there has been a steady stream of intelligence that ISIS-K was determined to attack in Russia, according to two sources familiar with the intelligence.

It was “fairly specific” intelligence, rising to the level of a duty to warn and the US intelligence community did indeed warn Russia, one of the sources said. But it’s not clear if this is directly tied to the March 7 warning by the US embassy in Moscow. 

Russian state media  reported  on March 7 that the FSB prevented an ISIS attack on a synagogue in Moscow, according to Reuters. The ISIS attackers were killed in a gunfight, the reports said.

A US official told CNN that the US is working to determine who is culpable for the attack at a Moscow concert venue.

Adrienne Watson, National Security Council spokesperson, issued a statement Friday on the US warning Russia about an attack.

"Earlier this month, the US government had information about a planned terrorist attack in Moscow – potentially targeting large gatherings, to include concerts – which prompted the State Department to issue a public advisory to Americans in Russia. The US Government also shared this information with Russian authorities in accordance with its longstanding ‘duty to warn’ policy."

Macron condemns Moscow terror attack and expresses solidarity with all Russians, Elysee Palace says

From CNN's Jonny Hallam

French President Emmanuel Macron said he "strongly condemns the terrorist attack claimed by the Islamic State" that left at least 40 people dead and more than 100 injured in a Moscow concert hall Friday, according to AFP and Reuters citing the Elysee Palace.

UN Security Council condemns "heinous" terrorist attack in Moscow

From CNN's Richard Roth and Mia Alberti

The United Nations Security Council condemned the "heinous and cowardly" attack at the Crocus concert hall in Krasnogorsk, in Moscow, on Friday, which left 40 dead and more than 140 people injured.

"The members of the Security Council expressed their deepest sympathy and condolences to the families of the victims and to the Russian people, and they wished a speedy and full recovery to those who were injured," the UNSC said in a statement.

The members of the UNSC urged all States to cooperate with the Russian government to "hold perpetrators, organizers, financiers and sponsors of these reprehensible acts of terrorism accountable and bring them to justice."

"The members of the Security Council reiterated that any acts of terrorism are criminal and unjustifiable, regardless of their motivation, wherever, whenever and by whomsoever committed," it said.

Moscow terror attack leaves 115 people hospitalized, 60 in "serious condition," Russian health minister says

From CNN's Darya Tarasova

Following the deadliest terror attack on Moscow in decades, 115 people have been hospitalized of which 60 are in a "serious condition," according to Russian Health Minister Mikhail Murashko. 

“We hospitalized 115 people, five of them are children. One child is in serious condition,” Murashko said in an early morning statment on Saturday according to Russian state media TASS.

UN chief strongly condemns "terrorist attack" in Russia

United Nations Secretary-General Antonio Guterres has condemned "in the strongest possible terms today's terrorist attack at a concert hall outside Moscow," according to a statement released by deputy spokesperson for the Secretary-General, Farhan Haq. 

"The Secretary-General conveys his deep condolences to the bereaved families and the people and the Government of the Russian Federation. He wishes those injured a speedy recovery," the statement said.

Moscow urgently calls for blood donors to help treat dozens of wounded

Moscow City Duma Chairman Alexey Shaposhnikov late Friday called on Muscovites to come forward and give blood to help treat the dozens of wounded following Russia's deadliest terror attack in decades.

“After today’s tragedy in Crocus, many victims need donor blood. I ask you to donate blood for the wounded! Now this is very important, this is a matter of life and death for dozens of people,” Shaposhnikov said on Telegram

 Shaposhnikov listed several blood center facilities in the Moscow area that will accept donors throughout the weekend.

Firefighters continue to put out the fire in Crocus City Hall, TASS reports

From CNN's Mohammed Tawfeeq

Firefighters continue to put out the fire in Crocus City Hall as a result of an attack at a popular concert venue complex near Moscow Friday, according to state media TASS.

"The Crocus City Hall fire has been localized, measures are being taken to liquidate the fire, the Russian Emergencies Ministry said," TASS said.

The armed attackers in Russia "allegedly fled in a white Renault car," RIA reports

From CNN's Mariya Knight 

The armed attackers who stormed a popular concert venue complex near Moscow and opened fire" allegedly fled in a white Renault car," the state-run RIA-Novosti news agency said on Friday. 

ISIS terror group claims responsibility for the attack in Russia

ISIS terror group has claimed responsibility for Russia's attack, according to a short statement published by ISIS-affiliated news agency Amaq on Telegram on Friday.

ISIS has not provided evidence to support the claim.

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