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Need help with Trek hybrid
I picked up a Trek 720 hybrid bike for cheap at a garage sale. I'm
guessing it's around ten years old. It has Shimano 200EX components with triple Biopace chainrings. It didn't have any wheels, so I picked up some 700c wheels at another garage sale. The rear wheel has a Shimano 600 freehub (non-compact). It fits fine on the bike with a 130mm spacing. My question is: what kind of cassette should I get that will be compatible with the 600 hub, the 200EX derailer, and the triple chainring? I don't know how many gears it had originally. Thanks. -- Dave T. Remove "slu" to reply |
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Need help with Trek hybrid
Dave T wrote:
I picked up a Trek 720 hybrid bike for cheap at a garage sale. I'm guessing it's around ten years old. It has Shimano 200EX components with triple Biopace chainrings. It didn't have any wheels, so I picked up some 700c wheels at another garage sale. The rear wheel has a Shimano 600 freehub (non-compact). It fits fine on the bike with a 130mm spacing. My question is: what kind of cassette should I get that will be compatible with the 600 hub, the 200EX derailer, and the triple chainring? I don't know how many gears it had originally. Thanks. The derailer doesn't matter, but the 200EX _shifter_ would have been a 7 speed, so you need a 7-speed cassette. Any recent Shimano 7-speed cassette that doesn't top out with an 11 tooth sprocket should work fine. See: http://harriscyclery.com/7 The 600 Freehub is most likely also a 7-speed unit. If it turns out to be an 8-speed, you would also need a 4.5 mm spacer to fill in the gap behind the 7-speed cassette...or, you could replace the shifter with an 8- or 9-speed unit and use an 8- or 9- speed cassette. Sheldon "Good Find!" Brown +------------------------------------------------+ | If you don't want your message to get to me, | | insert **NO-SPAM** into my email address. | +------------------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com |
#3
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Need help with Trek hybrid
Sheldon Brown wrote:
Dave T wrote: I picked up a Trek 720 hybrid bike for cheap at a garage sale. I'm guessing it's around ten years old. It has Shimano 200EX components with triple Biopace chainrings. It didn't have any wheels, so I picked up some 700c wheels at another garage sale. The rear wheel has a Shimano 600 freehub (non-compact). It fits fine on the bike with a 130mm spacing. My question is: what kind of cassette should I get that will be compatible with the 600 hub, the 200EX derailer, and the triple chainring? I don't know how many gears it had originally. Thanks. The derailer doesn't matter, but the 200EX _shifter_ would have been a 7 speed, so you need a 7-speed cassette. Any recent Shimano 7-speed cassette that doesn't top out with an 11 tooth sprocket should work fine. See: http://harriscyclery.com/7 The 600 Freehub is most likely also a 7-speed unit. If it turns out to be an 8-speed, you would also need a 4.5 mm spacer to fill in the gap behind the 7-speed cassette...or, you could replace the shifter with an 8- or 9-speed unit and use an 8- or 9- speed cassette. Thanks. I forgot to mention that I already ditched the shifters. So I think I will take the wheel to my LBS and figure out what the largest cassette will fit on it and buy shifters based on that. -- Dave T. Remove "slu" to reply |
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Need help with Trek hybrid
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