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power but narrow power band. The engine sound is unusual as the engine stays at a nearly fixed speed and the transmission ratio changes according to speed. The transmission freewheels when not driving forward, so there is no engine braking. The transmission is vented to the outside for cooling, and so is contaminated by stream crossings and other environmental exposure. Water causes slipping but quickly goes away; however grit can cause transmission sticking.
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to start the engine. The transmission freewheels with the engine at idle; starts to engage about 2800 RPM; and is tuned so the engine always runs near peak power, at 6,000 to 6,700 RPM. The lowest gear ratio is 3.76:1 and highest 0.87:1. Using a CVT allows a use of a 2-stroke cycle motor with higher
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Riding on loose surfaces is sometimes complicated, as rear wheel breakaway does not cause telltale changes in the engine sound. However, most other riding is intuitive and sometimes much more convenient as the automatic avoids engine stalls and other problems with gear selection. Operation is loud
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These are slow-speed off-road motorcycles designed for use in the most rugged terrain. Some are capable of 35mph or more, but typical top speed is about 20 mph. Current models are the Trail-Breaker, Ranger and Scout. When ascending very steep hills speed may be 0.5 mph.
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281:(134cc), while newer machines have either a Honda or Kohler engine of about 6hp. Each hollow wheel is able to hold 2.5 gallons of gasoline or water for long distance trips.
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Rokon motorcycles use a combination of belt, chain and shaft drives coupled to gear boxes to drive both the front and rear wheels. Older machines were powered by a
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253:. In 1964, Rokon Inc. bought the manufacturing rights to the Trail-Breaker and marketed the bikes from their Vermont office before moving the business to
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which are marketed either under the company's name, or as the "Trail
Breaker". Robert Korpi was also owner of Rokon International from about 1976 to 1990
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by Orla Larsen in 1963 to sell the
Nethercutt Trail-Breaker, a two-wheel-drive motorcycle invented around 1958 by Charlie Fehn and built in
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Prototypes were raced by factory riders from 1971 to 1973 under Tom Clark; "TCR" stands for "Tom Clark
Replica". In the 48th annual
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1969 Rokon
Trailbreaker two-wheel drive off-road motorcycle from The Museum of Automobiles in Arkansas.
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In 1974, Rokon produced the RT340 TCR Automatic motorcycle, using a snowmobile-type
Salsbury
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46:. Unsourced material may be challenged and removed.
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699:Motorcycle manufacturers of the United States
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106:Learn how and when to remove this message
399:Motorcycle marques of the United States
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55:"Rokon" motorcycle manufacturer
44:adding citations to reliable sources
345:"Cycle Guide" October 1974, page 61
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277:(US Motor/Chrysler Marine) 820
31:needs additional citations for
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315:International Six Days Enduro
467:Marine Turbine Technologies
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668:Wagner Motorcycle Company
633:Riverside/Montgomery Ward
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228:Rochester, New Hampshire
164:Rochester, New Hampshire
289:RT340 TCR Automatic/CVT
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538:Cleveland (1915–1929)
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245:Rokon was founded in
709:Off-road motorcycles
462:Lightning Motorcycle
437:Cleveland CycleWerks
359:Rokon World homepage
40:improve this article
598:Johnson Motor Wheel
568:Excelsior-Henderson
197:Number of employees
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513:American IronHorse
477:Z Electric Vehicle
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251:Sylmar, California
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279:two-stroke engine
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96:December 2013
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51:Find sources:
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29:This article
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623:Pierce-Arrow
593:Iver Johnson
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182:Charlie Fehn
159:Headquarters
133:Company type
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38:Please help
33:verification
30:
235:motorcycles
191:Motorcycles
180:Orla Larsen
693:Categories
533:California
333:References
176:Key people
145:Motorcycle
66:newspapers
608:Motus MST
603:MotoCzysz
583:Henderson
563:Excelsior
518:Bi-Autogo
427:Boss Hoss
412:Alligator
327:Tote Gote
299:pull cord
275:West Bend
653:Highland
321:See also
232:off-road
188:Products
141:Industry
673:Whizzer
663:Victory
658:Vectrix
643:Simplex
613:Mustang
558:Cyclone
553:Cushman
548:Crocker
523:Big Dog
491:Defunct
447:Fischer
442:Curtiss
405:Current
247:Vermont
241:History
206:Website
151:Founded
136:Private
80:scholar
678:Yankee
628:Ridley
618:Penton
588:Hodaka
578:Gelbke
543:Cooper
528:Brammo
457:Indian
306:(90.3
261:Design
213:.rokon
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638:Roehr
472:Rokon
432:Buell
308:dB(A)
224:Rokon
87:JSTOR
73:books
648:Thor
508:Alta
417:Arch
215:.com
154:1958
59:news
498:Ace
422:ATK
295:CVT
211:www
42:by
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169:US
167:,
392:e
385:t
378:v
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