Originally Posted by
unclejemima
... So long story short, its a standard 68mm wide bottom bracket with a 3 pcs square tapered crank. The crank measure 127.5mm wide. ...
I purchased a set of 89mm long cranks with 28t sprocket and it contacts the rear frame of the bike during the pedal stroke. The crank arms need to be about 3/8" wider to clear the frame. ...
Any suggestions would be greatly appreciated! Thank you!
I have not worked on a BMX before, but if it has a standard 68 mm wide bottom bracket shell, wouldn't installing a square tapered bottom bracket with a
longer spindle be cheaper and easier than finding a crank with a specific length and sufficiently flared crank arms?