slipper clutches...

[Dr_Phil]

I've learned how to ride without one...but once I put one on :o The best piece of equipment that I have installed on my bike next to suspension!!

Then again...what do I know ;)

[G 97]

I have the OEM one on the 2005 GSXR.  I guess it works good.  I still shift as if I didn't have one.  Once in a while I can feel it slip when I get a bit hurried.  Other than that I can't tell much.  Should I just bang down multiple gears at once?   Sometimes I even catch myself feathering the clutch lever a bit.  Seven years of 600's habit I guess.

What is the best/proper way to use one of these things anyway?  

[TommyG]

This is one of thoughs everyone knows better threads, right? ;D

If it wasn`t there would be no reason for Jim,Rosno, or you to be on here! Wait! Me too! ;D

[fourandsix]

If it wasn`t there would be no reason for Jim,Rosno, or you to be on here! Wait! Me too! ;D

Your just bored!

[LMsports]

I used one for two weekends in my 600 but didn't use one in my 1000. I found that it allowed me to enter a corner a gear lower on my 600 and so I had better drive out. I only used it at Blackhawk though and my best example would be in turn one. I used it more to prepare for the drive out of the corner than to prevent a rear wheel slide going in if that makes sense. I thought for sure that I would want one in my 1000 but I learned to ride it without one first and was glad I did. I have a lot more options open to me including purposefully sliding the rear in if I want.

[Super Dave]

I rode a Ducati with one.

I was capable of focusing more consistent intensity on the front brake.  

Additionally, I recognized that the chassis dynamics were different without the anti-squat generated by high RPM back torque.  

[J Farrell / Speed Tech Motorsp]

I rode a Ducati with one.

I was capable of focusing more consistent intensity on the front brake.  

Additionally, I recognized that the chassis dynamics were different without the anti-squat generated by high RPM back torque.  

I believe it is actually called pro squat. Pro squat is what is generated when using engine braking. Anti squat is the force applied during acceleration from the chain pulling down on the swingarm which in turn prevents the rear shock from compressing.

Pro squat is when the engine is in deceleration mode. The rear tire is trying to turn the output shaft which in turn makes the bottom run of the chain tight which pulls the swingarm upward or hence the subframe downward which like Dave says would cause a change in chassis pitch. Since he had the slipper clutch it didn't have any pro squat, there just wasn't any effect at all which put more weight on the front end while braking.

Just wanted to make it clear not to confuse anyone.

One area to note that a slipper clutch worked great for me is at gingerman raceway in turn 5 coming into the double apex left hander. When you come into it the engine RPMs are really high in 3rd gear but by the time you get to the second apex you have scrubbed off a bit of speed to and now your RPM's are underneath the powerband. Well you can't really shift down while cranked over so putting it in 2nd while coming in with the slipper clutch really works out great for me since the RPM's are right where I need them coming out of the second apex.

But overall it works great everywhere for me.

[Super Dave]

Nope, I am talking about anti-squat on a modern production sportbike.

We can go back to some old bikes for squat on deacceleration.

I'm not going into long details on this one though.  

[BRG]

Interesting...this may help


Antisquat is suspension characteristic in which the downward force on the rear of a vehicle, caused by the transfer of a vehicle's weight when accelerating, is resisted.


Pro-squat is generated by raising the outer rear pivot relative to the inner pivot. This will decrease forward traction and initial steering, but provide more on-power steering.


Jason very interesting, this is the type of info these boards would be good for. Most of the time it just turns into a circle jerk with the same people leading the way everytime.

Baker

[Jeff]

Dave, I'm asking this for my own clarification because I can't reconcile anti-squat being produced while downshifting.

My experience in this in a practical application is on a dyno.  Accelerate and you'll see the rear end extend (anti-squat).  Drop a few gears quickly or touch the rear brake and the rear end squats back down.

What am I missing?

[G 97]

Let the circle jerk begin.  ;D

[BRG]

acceleration VS "drag"

antisquat VS prosquat


Anti-squat is generated by raising/lowering the inner pivot  VS  Pro-squat is generated by raising the outer pivot

Jeff, I thing some people are confused. ;)