Originally Posted by
southpawboston
how much would it cost to make the fixed cup adjustable on lower end units? i can see how that would be especially useful when upgrading older bikes from asymmetric spindle and cup setups and needing to maintain the chainline.
one question though: how much torque should be applied to the cups? since they don't work on the same principle as true cups and don't actually tension the bearings (it appears that they just keep the cartridges pressed tight against the aluminum cartridge shell), i have no idea how tight to make them. for what it's worth, both lockrings loosened very easily, and the cups unthreaded entirely by hand.
With low end BB's I think its more an issue of fixing the chainline in place for a specfic crank more than anything else. In regards to tightening the cups....throw it all together and push on the psindle from left to right. Tighten the cups until left to right movement goes away. Keep in mind that tightening the lock rings will
loosen the adjustment.
Originally Posted by
southpawboston
my question was of the cups themselves, not the lockrings, since it's the cups that create compression on the aluminum shell between the cartridge bearing outer races (see last pic). also, what tool fits that cross pattern?
One of the Park spanner tools may work.....its either the yellow or blue but they only work on relatively loose cups. If your dealing with tight or siezed cups they dont work well, trust me.