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Minibike

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1997 Suzuki PV 50, Finland

A minibike is a two-wheeled, motorized, off-highway recreational vehicle popularized in the 1960s and 1970s, but available continuously from a wide variety of manufacturers since 1959. Their off-highway nature and (in many countries) typically entirely off-road legal status differentiate minibikes from motorcycles and mopeds, and their miniature size differentiates them from dirt bikes.

Traditionally, minibikes have a four-stroke, horizontal crankshaft engine, single- or two-speed centrifugal clutch transmissions with chain final-drive, 4" or 6" wheels and a low frame/seat height with elevated handlebars.[1] Commercially available minibikes are usually equipped with small engines commonly found elsewhere on utilitarian equipment such as garden tillers.

History

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A teen on a minibike in Thailand

While the minibike had precursors in machines such as the Doodle Bug and Cushman Scooters, which share smaller wheels, tubular-steel frames, and air-cooled, single-cylinder engines, those vehicles had larger seat heights and lighting that allow them to be registered for road use as scooters. In the 1950s, minibikes were hand-made by enthusiasts. These were first popularly used as pit bikes, for drag racers to travel in the staging-areas during races. One of these "Pit bikes" was received by brothers Ray, Larry and Regis Michrina in early 1959 from local car dealer and racer Troy Ruttman.[2]

1961 Honda 50 minibike, Honda Collection Hall transport museum, photographed in 2010

The Michrina Brothers would create the first commercial minibikes by drawing inspiration from this Pit Bike, delivering 3 prototypes to Troy Ruttman to sell through his dealership. The Michrina brothers are credited with creating the minibike but failed to patent the design or trademark the term when founding their Lil Indian brand in 1959.[3][full citation needed] Lil Indian would go on to manufacture tens-of-thousands of minibikes in their 40+ years. From the mid-1960s into the 1970s, the popularity of said machines would see over a hundred manufacturers attempt to market machines, an inexpensive venture due to the absence of patents. So popular and simple was the design, the June of 1967 Popular Mechanics magazine included an article with plans.[4]

As the market for minibikes developed, a variety of cottage and major industries offered models, including Arctic Cat, Rupp, Taco, Heath, Gilson, and Fox. Traditional motorcycle manufacturers also released models inspired by aspects of minibikes, most famously Honda with the Z50A,[5] though this style was nicknamed a Monkey Bike due to its monkey-like riding position.[6] Sales peaked in 1973, with 140,000 units between manufacturers.[7] By 1976 the bubble had burst and fewer than ten manufacturers continued to make minibikes. Popularity declined steadily, but leveled off in the early 1990s. Currently,[when?] machines can still be found at various retailers for less than $800.[8][full citation needed]

The wide availability of cheap, generic components manufactured in China has given rise to the popularity of home-assembled minibikes. These bikes typically have simple, boxy tube frames, small wheels, and are often built with some parts repurposed from Go-Karts, dirt bikes, or gas-powered tools. Bikes built this way can range from underpowered machines running on lawnmower motors up to extremely powerful ones capable of speeds up to 100 miles per hour. Despite not being road legal, recreational riding of these bikes, especially in large groups, has become popular in many cities in Southern California.[9]

Recently [when?] there has been a trend of adult sized electric minibikes.[10]

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In some jurisdictions, it is not legal to operate minibikes in certain places or without regulatory-specified special equipment.

Canada

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Minibikes do not meet Federal safety standards[when?] for use on public roads.[11]

UK

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It is not legal for Minibikes to be used on public roads or land. Further, it is not legal to use Minibikes on a property in proximity to a population if cited for noise pollution.[12][full citation needed]

US

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Whilst laws vary by state, Minibikes became unlawful for use on public through-ways[when?] due to lack of safety equipment, lights, and their diminutive size causing visibility issues.[13][full citation needed] In 1977, the CPSC was unsuccessfully lobbied[by whom?] to add federal regulation to Minibikes. By 1979 in the US, Minibikes could not be operated on public roads, they could still operate in areas legal for use of other recreational vehicles, provided they had a specified set of proper equipment utilized at the time of sale, most notably a spark arrestor for the exhaust.[14] In many US states mini bikes can be made street legal.[citation needed]

See also

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References

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  1. ^ "Minibike Definition". FreeDictionary.com.
  2. ^ "'Lil' Indian is a Survivor". Crains Detroit Business. 29 March 2006.
  3. ^ "'Lil' Indian history". Allied Leisure Corp.
  4. ^ "Build Yourself A Minibike" June 1967, p160, Popular Mechanics
  5. ^ "Honda Monkey Bike History". Cool Material. 13 June 2018.
  6. ^ "What the Heck is a Monkey Bike?". Motorcycle.com.
  7. ^ "Commission denies petition to regulate small motor bikes". CPSC.
  8. ^ "Coleman 212cc Minibike". ruralking.com.
  9. ^ "Exclusive: Mini bike street takeovers lead to mayhem on the roadways - CBS Los Angeles". www.cbsnews.com. 2022-03-31. Retrieved 2023-12-30.
  10. ^ spinningmagnets (2019-10-10). "The Electric Mini-Bike Craze, 10 Models". ElectricBike.com. Retrieved 2021-10-17.
  11. ^ "A Question about Pocket Bikes". 3 June 2013. Retrieved 15 July 2022.
  12. ^ “Vehicle Type Approval”
  13. ^ "Legality of Mini Bikes". Popular Mechanic.
  14. ^ "Commission denies petition to regulate small motor bikes". CPSC.
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