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• #52
Checked my 151bcd pista cranks which have to be getting on for 40 years old and they had the cracks, but really very slight. Not bad considering their age and how battered they are. 10 minutes with a needle file and the cracks are gone and the area is flattened up.
Filed down, this was as in focus as I could get.
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• #53
any success story after filing them?
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• #54
Well they haven't snapped yet and no sign of a crack re-appearing.
Filing out the cracks will help to prevent new ones starting and the old ones propagating - definitely a good idea - I took a crank off a frame last week where the crack had spread more than a 1/3 of the way across the arm...