07-08-2012, 09:33 AM
Not sure on uprated materials...
I guess if they can give you some specific numbers on the friction coefficient before/after then you might get some clues as to how good it might be.
I think the best combo is always gonna be a bit more clamping force and a bit more friction coefficient, so you kinda get a big boost from two subtle changes that will keep it feeling as OEM as possible.
I think the main issue is to get more clutch friction coefficient with the same clamping force means the materials get quiet exotic like brake discs/pads, so they might not be as good when cold, they might have a shorter life, they might make a lot of noise in operation, etc etc etc...
So you might have a clutch that squeaks a lot during engagement, slips when cold a bit, and might have a more aggressive bite point (more towards what a paddle clutch is like but possibly worse if it's a full face material jobby)
Also remember that due to the pressure plate springs the clutch force increases over the first 1/3rd of wear, ish, and then subsides over the remaining 2/3rds... lots of upgraded clutches simply have less material at first so they start off in the sweet spot of the spring force on the pressure plate...
What you really need is a pressure plate that has stronger springs full stop, and a slightly higher spec friction material.
I bet the latter is what the Berlingo Sachs kit is, just a heavier duty pressure plate and slightly heavier duty friction material.
Hmmm
Dave
I guess if they can give you some specific numbers on the friction coefficient before/after then you might get some clues as to how good it might be.
I think the best combo is always gonna be a bit more clamping force and a bit more friction coefficient, so you kinda get a big boost from two subtle changes that will keep it feeling as OEM as possible.
I think the main issue is to get more clutch friction coefficient with the same clamping force means the materials get quiet exotic like brake discs/pads, so they might not be as good when cold, they might have a shorter life, they might make a lot of noise in operation, etc etc etc...
So you might have a clutch that squeaks a lot during engagement, slips when cold a bit, and might have a more aggressive bite point (more towards what a paddle clutch is like but possibly worse if it's a full face material jobby)
Also remember that due to the pressure plate springs the clutch force increases over the first 1/3rd of wear, ish, and then subsides over the remaining 2/3rds... lots of upgraded clutches simply have less material at first so they start off in the sweet spot of the spring force on the pressure plate...
What you really need is a pressure plate that has stronger springs full stop, and a slightly higher spec friction material.
I bet the latter is what the Berlingo Sachs kit is, just a heavier duty pressure plate and slightly heavier duty friction material.
Hmmm
Dave