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Sportster Motorcycle Drag Racing Discuss drag racing on a Sportster Motorcycle.

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  #11  
Old 11 Hours Ago
Hightop Hightop is offline
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Sportster/Buell Model: Sportster
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Quote:
Originally Posted by conv90 View Post
very short forks , very short shocks , 6000 rpm and dumb the clutch and stock tires, advanced position seat? Is this the recipe to not flip the bike while letting the clutch lever? With my sportster if I let the clutch like this, I can't avoid tipping over..
When you use short rear shocks, the swingarm pivot is much lower than the center of gravity, all your power is pushing here, forcing the front up. Better to use shocks resulting in a level swingarm angle, IMO

If you tie the front end down instead of lowering it, you force the bike to raise the weight from the lower legs, brakes, and wheel and tire right from the hit, making a wheelie more difficult. If it's just lowered, you'll get an inch or so of extension before making it do the heavy lifting, and it's already moving in that direction, kind of like it's easier to wheelie if you pull back on the bars when you crack the throttle to get it moving
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  #12  
Old 3 Hours Ago
Tomcatt Tomcatt is offline
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Quote:
Originally Posted by conv90 View Post
very short forks , very short shocks , 6000 rpm and dumb the clutch and stock tires, advanced position seat? Is this the recipe to not flip the bike while letting the clutch lever? With my sportster if I let the clutch like this, I can't avoid tipping over..
Don't "dump the clutch". Slip the clutch to control wheelspin / wheelies. Adjust your launch rpm so you can pretty much hold the throttle wide open thru first gear while slipping the clutch.
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