I have a old bike that was my moms. Ya shut up . the shifter for the rear broke and i was thinking that i would just make it a single speed instead of buying a new shifter.It is a mid 90's Trek 800 Antelope rigid. (no shocks). It is an 18 speed. It has Canti brakes. Would this make a good candidate for a SS. If so what things would i need to buy.As im not very good at fabricating things. And how much would it cost.