Originally Posted by
jgf310
it's difficult to see how
#4 could do that very well... there is a tiny tab on it that i guess is supposed to go in the hole on the spindle - but it seems too small to do anything.
is that how it's supposed to work?
Yup, fits in the hole to prevent the crank from sliding off the axle. Not meant to hold up for miles on end but is a short term safety device. Try pulling your crank off with it in place and the pinch bolts and crank fixing bolt loosened and you'll see. As I mentioned this is a very rare occurrence but might save somebody some grief at some point.