Join Date: May 2013
Location: Exeter, Devon, UK
I have carried out this mod on my 999 and can confirm that the nasty racket of tabs slamming into basket is completely eliminated.
My understanding of what is happening is that with the standard arrangement, all tabs operate in the parallel section of the slots but if you put a friction plate at the bottom, it jams into the curved section at the bottom of the slots and stabilises the whole pack when the clutch is engaged.
This not only cuts the racket but also cuts the wear - win-win!
Apparently though, it is possible for the sharp edges of the tabs of the added friction plate to cut into the curved section of the slots and eventually create a step, which will then impair clutch action, so it is a good idea to radius the tabs to roughly match the curve of the bottom of the slots to stop this happening and keep the clutch action nice and smooth.
Last edited by Old rider; Nov 22nd, 2013 at 11:36 am.