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Thorn Audax Mk3r dropout spacing wider than expected

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u2v2w2:
Due to wider than 132.5mm dropout spacing freehub is developing uneven drag when QR sqever is tightened accordingly.  Last time I measured it was 135mm or even wider as far as I can remember. To avoid that there is no other choice but to set the pressure on it really lightly. When the dropouts are squeezed then ther aren't parallel anymore which bends the axle and causes to pawls rub
against the aluminium hub body due to insufficient wiggle room. Last time found some aluminium shavings and score marks next to the engagement ring. Anyone else experienced anything like this before?

B cereus:
Welcome to the forum.

I'm struggling to understand the exact nature of your problem here. I'm not a big fan of 132.5 mm rear spacing but I see no reason that it should lead to the problems that you describe. A few more details might help.

Is this a new bike?
What make and model is the rear hub?
Where exactly are the score marks that you saw?, a photo would be useful.

You say that you are tightening the QR “lightly”, do you perhaps mean tightly? I'd be surprised if you could tighten the QR enough to bend the axle, although it is certainly possible to compress it enough to apply excessive preload to cup and cone wheel bearings. This might lead to the “uneven drag” that you describe, and seems to be a more likely explanation than anything to do with the freehub.

JohnR:
If the dropouts are wider than the hub then I would put a washer on each end of the axle.

u2v2w2:
The frame is nearly two years old. The hubs are 130mm OLD budget grade Chosen ones with cartridge bearings. Another alternative option to washers could be 135mm end cap adapters or longer end caps, since respacing chainstays would require dropout facing to make them parallel.

B cereus:
I'm still not clear how and where the  pawls are binding against the hub body. In a conventional freehub this wouldn't be possible.

Here are a few thoughts:-

Have you tried simulating the axle compression with the wheel removed from the frame. Use the the QR skewer with a suitable thick penny washer next to the cam end  to compress the axle and see if the bearings and freehub run free.  This should tell you if the problem is frame related.
 
A good frame maker should charge around £20-£25 to cold set the rear spacing to whatever dimension you choose, and would correct the alignment of the dropouts at the same time.

If the parts to re-space your existing axle to 135 mm are readily available then this might be the best option but wouldn't address the problem of misaligned dropouts. You can check and correct alignment with a couple of old axles or two lengths of 10mm studding. Use nuts and washers to lock the axles/studding into the dropouts and sight along them to check alignment. Gently tweak the dropouts until the ends of the axles are in perfect alignment.

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