Should I convert a 1988 Raleigh Technium 400 into a singlespeed winter/commuter bike? I bought it for 190 bucks but I just purchased a Shimano 7600 crankset, now I need to switch the bottom bracket (I believe the current one both sucks and is not compatible) and of course, I don't have the tools to do it. So it could cost around 140 to just do half the conversion. Worth it? Anyone have experience with these bikes?