| Author | Message | ||
     Jake318 |
Do they make slipper clutches for the old motor STM has it fitting BOTH? motors ( says xb and sportster ?) is this correct ? Thanks jake BTW just bought the bike 4k miles 3000$ good shape But a KOOKS header? Ever hear of this company | ||
| Brinnutz |
Yup, heard of Kooks...Wanna sell it? I don't know the answer to the slipper clutch, but I bet it would be damn expensive to do, I think anyways. | ||
| Sloppy |
Your bike already has a slipper clutch - it's called "feather the clutch on downshifts." If it's good enough for Lawson to win 4 World GP titles then it's good enough for the rest of us... You could always do throttle blips too so you don't even have to mess with the clutch.  Save the money you would have spent on a slipper and sign up for a track day. You'll be a much safer and faster rider than what any slipper clutch would make you. Kooks is a well respected header manufacturer (not just bikes). Reports at the time are that they worked well. Don't know about longevity though. | ||
| V74 |
ask any racer slipper or no slipper,they will all say slipper,try back to back same model bike with and without slipper clutch,you should get a 4 second quicker lap with the slipper,ever had the back wheel lock momentarily on a down shift when you haven't got the throttle-clutch spot on,did lawson have access to them when he raced?you have to be so accurate with throttle-clutch-brakes-track position when coming from top gear high speed straight to a first gear corner,wouldn't you rather have a slipper clutch so you can be that much more accurate getting round that corner as fast as you can ??? | ||
| Maru |
Went to a quarter mile paved oval car race this summer and walked through the pits and noticed that 90 percent of the Modifieds had Kooks exhaust. Slipper clutches are awesome on racetracks, but not sure if they are worth the trouble and expense for a street bike. I am not sure how long they would hold up in street use. I have a Husky 450Smr Supermotard bike that I use for track days and it has an STM slipper. It made the bike so much easier to ride fast, but thew plates wear out pretty quick. | ||
| Maru |
Wow just looked at your Bio Jake. I would think a slipper would help lap times with your 88, but again I am concerned about durability. I have a 97 S1 which I am going to use as a track day bike. It has a 90 and I have considered a slipper but my budget is way over what I had in mind for the engine already. Check out the comments in the XBRR section. The factory tried several brands and could not get one to last more than 5 laps. | ||
| Rickie_d |
Paul - If you are going to play on the track with an engine that has that much torque and engine braking, I would spend my money on a close ratio gear set and bump up the trans pulley a tooth or two before I invest in a slipper clutch type of band-aid. Dump the Kooks header! Those guys never new how to package the header primaries for vehicles that lean and were too arrogant to take advice on how to fix the problem I could drag that pipe playing in a parking lot, which is why they never caught on with the race teams they were marketing it to. | ||
| Sloppy |
Lol! A tuber Buell being a competative road race bike??? Perhaps in Vintage class? | ||
| Jake318 |
Guys the slipper is for the Cyclone M2 racing in stock class. I already have a STM in the XB12R Firebolt with 88ci kit . A definate improvement . I decided to keep the yellow Xb12(88ci) yousee in my bio as a hot street bike since buell shut down. Boough anouther xb12R for racing . Keeping it under wraps ( trying new idea ) but I can say with confidance its going to be the most powerful firebolt you have ever seen. when done I promis ill post pics Jake | ||
| Ducxl |
All of this talk of slippers and engine braking confuses me. A long stroke twin of undersquare proportions produces the LEAST amount of engine braking of all. I have two extreme examples of oversquare and undersquare twins and my Harley based one IMHO makes VERY little engine braking But you report good results? | ||
| Smoke |
been tracking my 98S1W for 5years and raced a couple of events this year. no slipper clutch but running a 29/61 pulley combination with little issue. taking it to run at Daytona in Battle of Twins Formula 2 in March. might put chain drive before i go. it's mostly a stock motor with a Mikuni and Force Exhaust. i am putting a Suter slipper in the 1125r however. Spend the money on track time. tim |
