| Author | Message | ||
     Igneroid |
I'm kind new to Buell(bought a 2002 tuber in August) and have been reading lots on this soon to be released motorcycle. Can any one explain to me what a slipper clutch is, its advantages over a regular clutch, and just how durable it might be?? Or is the "slipper' somthin like what the missus wears on her feet after takin a bath...heh... | ||
| Wolfridgerider |
A slipper clutch (also known as a back-torque limiter) is a specialized clutch developed for performance oriented motorcycles to mitigate the effects of engine braking when riders decelerate as they enter corners. They are designed to partially disengage or "slip" when the rear wheel tries to drive the engine faster than it would run under its own power. The engine braking forces in conventional clutches will normally be transmitted back along the drive chain causing the rear wheel to hop, chatter or lose traction. This is especially noted on larger displacement four-stroke engines, which have greater engine braking than their two-stroke or smaller displacement counterparts. Slipper clutches eliminate this extra loading on the rear suspension giving riders a more predictable ride and minimize the risk of over-revving the engine during downshifts. Slipper clutches can also prevent a catastrophic rear wheel lockup in case of engine seizure or transmission failure. Generally, the amount of force needed to disengage the clutch is adjustable to suit the application. | ||
| Wolfridgerider |
From Wikipedia | ||
| Zac4mac |
Durability shouldn't be any different. It's still going to depend on your riding style a lot. The clutch is assisted, meaning it's easier to pull in, by engine vacuum. If you downshift too much, the engine develops enough vacuum to disengage the clutch, as if you'd pulled the lever in. Still unsure if it affects "normal" engine braking, or only kicks in ina extreme situation. Hoping for the latter. Almost spit beer outta my nose with your second post Wolf..... Z | ||
| Barker |
Ok, here ya go, Ur hauling a$$ up to a turn, You pull in the clutch, drop a gear or 2 and you let out on the clutch, rear wheel losses grip a slides. Could spook u and/or ur boingers and get u into a hi-speed jump off. If this does not happen to you on regular basis, dont worry about a slipper. With a slipper clutch this is less likely to happen. It eases the sudden change in down shifting. And gives you more controlled engine braking during high speed down shifts. | ||
| Igneroid |
Thanks for the explaination guys. Sounds slick. Is Buell the only manufacturer to employ such a deveice or is it commonplace among superbikes??? Sorry for all the questions, I been outta the motorcycle scene for 25 years and I'm tryin to catch up..... | ||
| Imonabuss |
Slipper clutches are becoming more common on all high performance bikes. Buell and Aprilia are the only ones to use the vacuum type, since it's a Rotax concept. Other companies use mechanical ramps. | ||
| Gjwinaus |
Does anyone know if you will be able to bump start (push start) the 1125 with the slipper clutch | ||
| Sheridan_bueller |
Since the slipper is vacuum operated, no running engine, no vacuum, no slipper clutch. I'm sure you can with no worries. That is if you have a reeealy steep hill and can get enough weight on the rear tire to keep it from sliding when the 12.3 to 1 compression doesn't want to let it turn. I had to do this on my XB9 a while back with only 10 to 1 compression, had to have it in 3rd gear to get the engine to 'bump' over while I (180lbs) jumped as high as I could, after a running start slightly downhill (not fast enough!) I could get it to 'bump, bump'. I'm going to try it on my 1125 just to see if I can get it to 'bump' just once. (after Dec. 10th. WOOOOHOOOOOOOO) | ||
| Fresnobuell |
Because of the fuel pump priming, isn't it impossible to push start a Buell with a completely dead battery? Just wondering cause it happened to me some months ago and I couldn't get it to fire up. I got the bump bump too, but it wouldn't start. | ||
| Sheridan_bueller |
Oh, good point Fresno! My bat wasn't dead, yet. Just didn't have enough poop to turn the engine over. Fuel pump was still (at least it sounded like it) pumping. After some help stopped and gave me a hand with the pushin', she came back to life. good thing to remember... don't shut your bike off in the weee hours of the morning, on a back road with very little traffic, just to take a leak!  | ||
| 12r |
The slipper clutch on my '07 R1 is most excellent. I used to scoff at the idea that a slipper clutch was necessary on a road bike but I have to say it works beautifully at all times. It makes the bike very composed going into corners and the re-engagement is lightning fast when getting back on the gas  |
