Originally Posted by
auchencrow
Consider why you want to change it - then consider that the weight savings is in a location where it hardly makes any difference, and consider too that cottered cranks are extremely durable and often beautiful.
Also, the difficulty in servicing them is, IMO, way over-blown (provided you have a good cotter press and mill file).
You're right, I want to change it mainly for maintenace purpose, the bike is a 30 years old VÉLO SPORT (cheap canadian made low end bike) so no real value to preserve. The frame is strong so I want to turn it into my commuter (61 kms/day) so I'll need to remove the cranck for maintenance once in a while but I dont have a cotter press.