Originally Posted by TechJD
ok just checking
1) indexing cassette w/index shifters are new style and freewheel w/friction shift are vintage
2) so you cant use an index shifter with a freewheel right
3) and odds are a friction shifter dont work too good with a cassette and indexing derailer of course
4) so if you change one you have to change all 3 cassette, derailer and shifter right ?
5) also does rear hub have to be changed ?
1) TRUE. It is also true that cassettes are mechanically superior to freewheels, for various reasons. However, rear shifter indexing is not always superior to friction, and I argue strongly that front shifter indexing is undesirable, because of the loss of control over cage trimming.
2) NOT NECESSARILY TRUE. My 1988 mountain bike has period-correct SunTour Accushift friction/index thumb shifters and a 7-speed SunTour freewheel. Although I prefer friction mode, it works fine in index mode, as well.
3) FALSE. Assuming it can take up enough cable, any friction shifter will work very well with any cassette and "indexing" derailleur. (The only difference between an "indexing" derailleur and a "friction" one is that the former has greater intentional horizontal slop in the jockey wheel's bearing.)
4) FALSE. See 2) and 3), above.
5) Cassettes and freewheels require different rear hubs. If you increase the cog count, you may need to spread your frame (if it can take it!) and get a wider axle.