slipper clutch grabby on initial drive

[sinex]

Why is a slipper clutch so grabby on the inital rolling bit from stand still over a normal clutch?

[johnchypermotard]

Originally Posted by sinex

Why is a slipper clutch so grabby on the inital rolling bit from stand still over a normal clutch?

check the stack height on the clutch pack.

slippers (at least ramp style slippers) are very sensitive to stack height. read the instructions that came with your slipper clutch, and it will specify a height range.

i am not familiar with the non-ramp style slippers, so if anyone here has one installed and knows if stack height is critical with them as well ... please post up.

[vduc]

I've had a SurFlex slipper clutch that is a non-ramp type. There is no stack height to worry about with them. They use what they call an "endless screw" to move the plates. There are some pictures in my member gallery.

[08hyper]

Originally Posted by 08hyper

For some of you that are experiencing a grabby or groaning/squealing clutch,
I have the fix, especially if you have a enclosed cover.

The clutch plates in time will get grungy & sticky with use, which will cause noise, and grabbiness, and if you are a track day rider, hard rider, or just slip the clutch alot in traffic, you may have overheated the clutch, which can take the tension out of your convex steel plate in your clutch pack.

Buy a new convex steel plate from Ducati, part# 19010241A you may have to order this, as many dealers don't even know it exists, cost about ten bucks.

So here's the fix, take off the screws, springs, and pressure plate, remove all the steel & friction plates, (KEEP THEM IN THE EXACT ORDER THAT YOU TOOK THEM OFF!) as the pack has "mated" to each other. At your local auto parts store get a couple cans of "brake clean spray" and one at a time spray the plates & wipe them down, remembering to keep them in order, now reinstall.

Start with the 2 steel plates first, then 1 friction, then install the NEW convex steel plate, tossing out the old one, the convex plate will have a small punch mark on one of the teeth, (hard to see, but its there) this punch mark faces out, towards you. The convex plate should be the 3rd steel plate from the bottom, or you did something WRONG! Now just finish up the rest of the plates in the order you took them off.

Your clutch should be good as new, and if you take apart the clutch pack, once in a while, and spray her down with the brake clean, you'll get the max life out of you clutch! Happy clutching! Aloha Alex

Fron an early post of mine, Aloha Alex