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onza vox freewheel problem


Dman

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Posting for a friend but I am trying to fix the problem. I just had a go on my friends onza vox, I noticed chain was really slack so I tightened it up at same time I checked crank bolts as they always used to come undone on my zoot and they were really loose, so I tightened everything up but when I spun the cranks it had a tight spot and a loose spot. I stripped everything down took bb out all seemed fine regressed and refitted, put non drive side arm on spins perfectly but as soon as you put drive side on it starts to bind, crank arm looks fine, freewheel looks fine no play seems to be on straight, but I did notice a semi circle mark on the freewheel where it's been rubbing, when you tightened it up it is rubbing on the bb. Is there a spacer missing or something I'm not seeing? Any help appreciated.

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Edited by Dman
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Anyone? How is this fixed?

spacer behind the bearing, up against the stop on the bb, if that's the problem.

I had a bb axle too short between the bearing stops on a bmx, had no probs once I put a spacer in there. It would need to be bang on the right size, so plenty of sand papering and trialing :S

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Does it do it with the bolts loose?

Non drive side I can tighten fully, drive side needs arm pulling off slightly then you can put bolt in, but nowhere near tight enough for it to be safe to ride.

I know onzas aren't great quality wise, but I had a zoot, my mates got a zoot and another's got a blade and another a bird no problems with them like this.

It really seems as if a spacer is missing, but I don't think it is, can you put a washer on end of bb axel?

What's the best fix then?

Thanks

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How wide is the BB shell? Could he have a 68mm BB in a 73mm shell?

EDIT: Forget that as it would make no difference on the drive side! Can only think the BB axle is too short, any idea how long it is?

I will check it tomorrow.

Just thought could the splines be worn down with it being loose and now it just goes on too far?

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