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Old 03-01-08, 01:09 AM   #1
daotan
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Front hub on rear wheel? -noob wrenching

I am trying to make a front wheel out of parts i have laying around. I have an old front hub and an old rear rim that used to be part of a a cassette rear. After i did the initial tightening it looks dished as if it was a rear cassette wheel. Is it because of the position of the holes on the rim? I used the front wheel spokes that were on the front hub so I figured: why wouldn't it work? (famous last words) So what? Is this normal? Should I file it under lessons learned?

Thanks in advance.
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Old 03-01-08, 04:34 AM   #2
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Does the rim have a symmetical or asymmetrical cross section? Did you recycle the spokes from a rear wheel?. If so they are probably different lengths.
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Old 03-01-08, 07:46 AM   #3
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Should work fine. If all your spokes are the same length and are equally tight, there is no reason the wheel should have any dish. In other words, having been used as a rear rim would in no way pre-condition the rim to being dished. Check you spoke lengths and tensions.
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Old 03-02-08, 10:07 AM   #4
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doesn't look asymmetrical, it would be pretty obvious correct? the spokes are from the front wheel that i sourced the hub from, i am pretty confused

whats funny is that all the spokes on one side are tighter than the other, theres no room in the nipple to tighten the loose ones any further, all evidence points to the rim being asymmetrical, it just doesn't look it to the naked eye
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Old 03-02-08, 11:29 AM   #5
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Originally Posted by daotan View Post
doesn't look asymmetrical, it would be pretty obvious correct? the spokes are from the front wheel that i sourced the hub from, i am pretty confused

whats funny is that all the spokes on one side are tighter than the other, theres no room in the nipple to tighten the loose ones any further, all evidence points to the rim being asymmetrical, it just doesn't look it to the naked eye
I think that all of your spokes are a little too long. There is no "standard spoke length". It needs to be determined for each individual hub and rim combination. If they are even a couple of millimeters too long (that's not very much) it won't work.
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Old 03-02-08, 04:28 PM   #6
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You don't say whether the old rim from your front hub + spokes was the same as the one you're now trying to use. Rims with different profiles need different length spokes. But I suppose that still doesn't really explain the assymetry.
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Old 03-02-08, 04:55 PM   #7
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I'll hang my hat with the all the spokes too long theory.
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Old 03-05-08, 08:47 AM   #8
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is it a disc hub
some have one flange bigger or further from the lock nut.

measure some of the spokes to see if there all the same length.
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Old 03-05-08, 05:32 PM   #9
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put the wheel in the fork and quit trying to guess if the dish is right or not.
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Old 03-05-08, 08:09 PM   #10
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put the wheel in the fork and quit trying to guess if the dish is right or not.
Then put the wheel in the fork the other way around, and if the rime is in the same position relative to the brakes, you know you have it centred between the locknuts.
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