Originally Posted by
trailangel
After the initial tightening of the crank bolt, did you re-tighten after 20 miles or so? .
Check it for looseness every ride thereafter for a few but back off your torque on those a little so you don't hob your crank tapers and pull the cranks too much towards the frame.
When I tried that without a torque wrench I wound up having to shim 2 sides, 90 degrees apart, of each side of the internal crankset tapers with spark plug gap gage material matching in thickness on each individual side of the bike...
So torque wrenches in your workplace, like tire boots and chain breakers on rides, are very occasionally more than just handy.