7 sp cassette on 8/9 sp compatible wheel
11-18-07, 02:18 AM
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7 sp cassette on 8/9 sp compatible wheel
Hi guys,
My commuter's old wheels have failed after 15 years of reliably serving me. Can I buy any new 8/9 speed compatible wheel and just put a spacer to adapt it to my 7 speed cassette? is it that simple or is there anything special I should pay attention to?
Thanks in advance,
My commuter's old wheels have failed after 15 years of reliably serving me. Can I buy any new 8/9 speed compatible wheel and just put a spacer to adapt it to my 7 speed cassette? is it that simple or is there anything special I should pay attention to?
Thanks in advance,
11-18-07, 05:49 AM
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Couple of things.
1. What's the distance between your dropouts? A new wheel is going to fit either 130mm or 135mm dropouts. If your bike has 126mm dropouts there are 2 or 3 ways of working around that. It's not too big of a deal.
2. Look at the back of your 7-speed cassette. It probably has some tiny boltheads or rivets sticking up that hold it together. You need to remove those or file them flat to make the cassette sit flat against the spacer.
1. What's the distance between your dropouts? A new wheel is going to fit either 130mm or 135mm dropouts. If your bike has 126mm dropouts there are 2 or 3 ways of working around that. It's not too big of a deal.
2. Look at the back of your 7-speed cassette. It probably has some tiny boltheads or rivets sticking up that hold it together. You need to remove those or file them flat to make the cassette sit flat against the spacer.
11-18-07, 09:52 AM
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Besides the rear drop out spacing being wider, the lockring type is different on 7 sp than on 8/9/10sp.
Would be simpler to just put an 8sp cassette on and just adjust for the hi or lo gear you want to use.
Then look for an 8speed shifter eventually.
Would be simpler to just put an 8sp cassette on and just adjust for the hi or lo gear you want to use.
Then look for an 8speed shifter eventually.
11-18-07, 11:20 AM
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Ok guys, thanks for your answers. I will check the dropouts. It might also be the occasion to go 8 speed. My drive train is a 15 year old deore LX whose retirement is long due.
11-20-07, 12:29 AM
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And I thought initially that I'll pay $10 for them, which plus shipping, equals around $20! Ha!
My advice is to make sure that whatever shifters/brifters you are considering, are indeed compatible with your brakes (Cantilever or Vs).
Can you imagine a circa 1992 used brifters going for $83.90? I decided I'll keep my 7-Speed drivetrain for now. As a matter of fact, 7-Speed looks pretty good right now.
Regards,
