Wheel compatability help
09-22-14, 02:22 PM
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Wheel compatability help
Hello,
I bought my wife a Trek 7.2FX hybrid bike. I am trying to set her up for the Fall/Winter with a separate wheel for the trainer. Will an 8-speed cassette work on a Shimano wheel that is rated for 9/10 speed cassettes? I am looking at a Tiagra or 105 rear wheel. Any other recommendations for a cheap rear wheel?
I bought my wife a Trek 7.2FX hybrid bike. I am trying to set her up for the Fall/Winter with a separate wheel for the trainer. Will an 8-speed cassette work on a Shimano wheel that is rated for 9/10 speed cassettes? I am looking at a Tiagra or 105 rear wheel. Any other recommendations for a cheap rear wheel?
09-22-14, 03:02 PM
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Yes, but make sure the axle width is the same, ie. 126, 130, or 135, to match the bike.
I believe (I'm not a Shimano maven) that the freehub body width is the same for Shimano 8s-10s, but it doesn't matter if I'm wrong. The 8s cassette won't be wider, and if it's narrower, you can add spacers behind it to bring the front edge out 1mm beyond the face of the freehub so the lockring can bear on it without bottoming against the freehub body.
I believe (I'm not a Shimano maven) that the freehub body width is the same for Shimano 8s-10s, but it doesn't matter if I'm wrong. The 8s cassette won't be wider, and if it's narrower, you can add spacers behind it to bring the front edge out 1mm beyond the face of the freehub so the lockring can bear on it without bottoming against the freehub body.
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09-22-14, 03:33 PM
#3
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I just added a Sunrace 8-speed cassette on a Vuelta Corsa Lite Shimano 9/10 rear wheel with no spacers and it works great. I actually had a 1mm spacer on there previously but was experiencing a lot of cassette/chain noise which went away after I removed the spacer.
09-22-14, 06:57 PM
#4
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Isn't the 7.2FX spaced @ 135mm?
If so, you want a "mountain" hub, not "road".
8/9/10 speed use the same body.
10 speed actually requires a 1mm spacer.
IF it's for a trainer, why not get a generic 8/9 speed "mountain" wheel at the LBS for $50-60.
If so, you want a "mountain" hub, not "road".
8/9/10 speed use the same body.
10 speed actually requires a 1mm spacer.
IF it's for a trainer, why not get a generic 8/9 speed "mountain" wheel at the LBS for $50-60.
09-23-14, 11:58 AM
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I asked the folks at trek and they said the rear wheel spacing is 130mm.
09-23-14, 01:17 PM
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Get a LeMond trainer and you dont even need a Back Wheel at all .. https://greglemond.com/#!/revolution
09-23-14, 01:38 PM
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Get a LeMond trainer and you dont even need a Back Wheel at all .. https://greglemond.com/#!/revolution
09-23-14, 06:37 PM
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Just out of curiosity, why a "trainer" wheel?
09-24-14, 09:58 AM
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