Subject: Re: ZF6 Tranny clutch/gears! by LD85 on 2013/3/20 1:01:43
Quote:
MikeB52 wrote: The turning marks from a lathe don't create a perfectly round path for the clutch to slip on? We take off as little as .0001" at a time with various finishes down to a 4.4 with our grinders. I know that obviously a 4.4 is NOT the optimal fibish for something that depends on friction to function haha unfortunately, my shop got rid of our blanchard grinder some time ago. But I can't see turning marks being very productive as they go with the direction of spin... but I'm no tranny wizard.. i was thinking of grinding it to an 80 finish. Let me know what you think
Don't over think it, no disrespect meant, but like Bogus suggests, rough it up with with some heavy grit sand paper and call it good.
Think about the clamp force that the PP exerts, then think about the 1st or 2nd time you dump the clutch, that "few" thousandths of surface "friction" will be gone.
Its way more about clamp and friction material than it is about the surface, until, of course, your glaze the F.W surface and slippage begins, followed by stinky smell and obscene language, blah blah
