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I replaced my chainrings last night - 44T, 32T and granny. However, i cannot get the crank to fully tighten up abd there is lateral play across the BB. The cranks are race face evolve and the BB was replaced last summer. Before i took the cranks off last night, there was no play at all. Anyone had this problem ? Is it likely to be a problem with the cranks/spindle or BB?
I've had this problem before.
How old are the cranks? Mine wore the out at the spline interface and kept loosening while riding after less than 18 months of ownership.
my guess is that you've missed one of the spacers off the axle on the RF cranks when reassembling.
I thought about a missing spacer, but put back everything that was taken off, and there was no play before.
Crank set is pretty old, but splines looked OK. Could i damage the BB or crank set through overtightening ie compressing the bearings?
not with race face - the driveside crank arm fits against the end of the axle in a way that means you can't crush the bearings.
I had this problem repeatedly with a Deus set until in the end i just put an XT on.
You could try an extra spacer to see if it will take up the movement.
IMO you can crush the bearings as in my repeated attempts using too many spacers and then tightening up resulted in the bearings being tight.
Looking at the shaft on the Deus it had been spinning in the bearing and had worn a groove in the shaft.