Originally Posted by Paraleisure
Has anyone here ever broken the arm off of a crank coming to a stop quickly? I have a really tiny crack in my Campy crank, but it's awesome and super light and I don't want to stop using it. The alternative is to buy a 44t chainring and use my much lamer stock crank that came with the bike.
The crack is right where the arm meets the crank (spider? not sure what the right term is). I've never met anyone who's actually broken a crank, which is why I decided to just use it, but if someone here has, then I should probably reconsider...
That's a really common problem with older campy and suntour cranks. There's a sharp edge there. If the crack is small, you can take a fine, round file to the area to get rid of it. The rounded area shouldn't crack again. I've done this to both Campy and Suntour cranks with great success, and if you're careful the rounded area can look really nice.
Jim