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Thread: Can some 1 explain how this is fast

  1. #1
    Join Date
    Feb 2007
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    Can some 1 explain how this is fast

    I just dont understand how it can have any power and be fast is it one big gear or is it like an automatic car when that you can hear it shift and the rpms change especially when you nail the throttle ?
    '07 250ex
    20 inch razr tires
    ITP C-series sport wheel

    '03 kawasaki bayou 250- Cleaned up
    '04 yamaha breeze-sisters

  2. #2
    Join Date
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    it is more like a snowmobile set-up
    pulleys that seperate with a belt in between
    oh, and they are frigging super fast
    Me:'07 Grizzly Camo edition
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    My boys: '05 TRX300ex, '05 Robbs racing TRX115, '03 TTR-125, '06 DRZ-125

  3. #3
    Join Date
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    snow mobiles fly lol
    '07 250ex
    20 inch razr tires
    ITP C-series sport wheel

    '03 kawasaki bayou 250- Cleaned up
    '04 yamaha breeze-sisters

  4. #4
    Join Date
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    The KFX700 can fly too...

    Mark Twain: "Twenty years from now you will be more disappointed by the things you didn't do than by the ones you did do. So throw off the bowlines, sail away from the safe harbor. Catch the trade winds in your sails. Explore, dream and discover."

  5. #5
    Join Date
    Nov 2002
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    Jacksonville, FL
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    Re: Can some 1 explain how this is fast

    Originally posted by 07250ex
    I just dont understand how it can have any power and be fast is it one big gear or is it like an automatic car when that you can hear it shift and the rpms change especially when you nail the throttle ?
    Think of it like a mountain bike. With the bike you can select the gears you want by moving the chain via cable to different sprockets. The transmission is doing the same thing with a belt instead of a chain, and two pulleys instead of gears. The rear pulley is a fixed diameter. The front pulley is angled to allow the belt to rise up to a higher diameter for a taller gear and back down to a lower diamter for a lower gear.
    Polaris Predator 500
    Polaris Magnum 425

  6. #6
    Join Date
    Dec 2005
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    Westminster, MD
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    basically it is constantly changing "gearing" as it goes. kinda slips it up the range just like zsk said. most utilities use the same therory.

    some cars even use these transmissions. that have thier fualts. and you have to get the clutching right to get the most power. but they can be very powerful.
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  7. #7
    Join Date
    Nov 2002
    Location
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    2,875
    The clutching is the key. In theory, a CVT equipped vehicle/atv will be quicker and faster than the same vehicle/atv because the constantly variable transmission (CVT) is always keeping the motor in its "sweet spot." The springs and weights are crucial to the CVT working correctly.
    Polaris Predator 500
    Polaris Magnum 425

  8. #8
    Join Date
    Aug 2006
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    has anyone ever raced one stock and stock with a 450
    Trx 450R - BACK IN ACTION!!!

    *2005 CRF450R*
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    2000 Mustang GT
    WAY too much to list, and still too slow

  9. #9
    Join Date
    Jun 2007
    Posts
    55
    Originally posted by pro-rider46
    has anyone ever raced one stock and stock with a 450
    Stock against a 450 , the 450 will beat you . With a little work , exhaust , air filter , jets , tuning it will beat a stock 450 . Get into the clutches and you pick up more speed . Mine goes mid eighties with only a few mods . I know a guy that is hitting 100 with some radical mods .

  10. #10
    Join Date
    Jul 2006
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    new jersey
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    yeah mine did 72 and its completely stock
    05 300ex
    yoshi slip on
    k&n filter
    dyno stage 2 jet kit
    big gun rev box
    turf taimers 20in rear
    more to come

    1990 cr80

    1987 bw80

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