Hey Biker,


since you will be needing a new front derialleur consider the centaur compact front derailleur as well. It's the same price ~$40 as any other centaur/veloce regular front deraileur and the radius of the rings is better matched. While I don't think this is a huge issue if you have to buy a new front derailleur why not?

I've used tape before on my parts (black electrical), but never the entire crank arm. You are right I don't see why it shouldn't work.