I recently purchased a Raleigh Twenty in fair condition and am planning on going all out on the upgrade route... First thing that I have decided to tackle is the bottom bracket. I managed to find, locally, a UN72 bottom bracket. Most of the websites I consulted mention a UN72 with a 113mm length as ideal, but the one that I found locally is 122mm. Will 122mm be OK for the Raleigh Twenty or is it too long?
I'm still debating on whether or not I should just have the bottom bracket re-threaded or not, it might be a wise investment.