Hey, so Im converting my fixed Trek 330 back to its original state. I have most of the original parts except the freewheel and rear wheel. I found a Suntour alpha freewheel (6 speed) that appears to be like the one that was originally on the bike. If I find an old 6 speed wheel can I take the freewheel off and put my new freewheel on it? If I buy a 7 speed wheel would it work with the 6 speed freewheel? Also my derailleur is indexed so would I need a special chain? Thanks for any help you can give
'''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Both standard 6-speed (not "Ultra") and 7-speed freewheel hubs are 126 mm OLD so they can be used interchangably.
As noted, the indexing for Shimano and Sun Tour were different so you should match the brand of 6-speed freewheel with your shifters if you want to maintain proper indexing.