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Old 02-19-11, 10:58 AM   #1
Maui_Jimmy
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Rear wheel coming out of dropouts

I have an 84' Tommasini with the Campagnolo rear dropouts that have the adjustment screws. When I first rode the bike, after completely updating all the components, the rear wheel slipped out of the dropout on one side causing the wheel to stop the bike by rubbing the frame. I tightened the skewer and tried it again. The problem still continues and is worsening. I had the dropouts aligned before I put the bike back together. The adjustment screws were also replaced and everything seemed to line up OK. When I put some torque on the crank, it pulls it out of the dropout every time now. Any suggestions?

Thanks!
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Old 02-19-11, 10:59 AM   #2
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Check out this recent thread.
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Old 02-19-11, 11:08 AM   #3
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Thanks! I did a search, but this didn't turn up. I must have "searched" wrong
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Old 02-19-11, 07:12 PM   #4
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Did you disassemble and service your hubs? If so you may not have the axle properly centered in the hub. If it sticks out just a little too far on one side the qr cannot lock down on the dropout face properly and the wheel slips out.
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Old 02-19-11, 07:56 PM   #5
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The wheels are brand new. It happened the first time after about 10 miles and has progressively gotten to the poing that I can't even pedal without it happening.
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Old 02-19-11, 08:09 PM   #6
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Its the skewer or the hub. That simple. Paint on the dropouts left over in the knurling on the skewer? Does the skewer open and close easily? Is it an internal cam skewer like shimano? Is there any knurling or a round section that is raised on the axle nuts?
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Old 02-19-11, 11:48 PM   #7
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I suspect the new wheels, put the old wheel back on and go for a test ride.
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Old 02-20-11, 03:59 AM   #8
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I pulled the old skewers out of my original wheels (84' model) and swapped it out with the new ones that came with my new wheels and it fixed the problem. I was a little concerned about the length of the old skewer, but I wanted to try it to see if it would work. It was plenty long enough and works great!

Thanks guys!
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Old 03-26-11, 07:17 PM   #9
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Tommasini restoration


I have the same issue as Maui had. And I have a late 80s vintage Tommasini. I'm using Topolino wheels and I can't torque the skewers down tight enough to hold the wheel in the drop-outs. Will try old Dura-ace skewers tomorrow.
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Old 03-27-11, 07:20 AM   #10
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I generally swap out skewers for good quality non-QR's, as I always carry the allen wrench needed, anyway (fits seat post binder, calipers, etc). It adds $20 to the cost of each bike, but is good risk prevention.

Some skewers that come with aftermarket wheels are simply built for weight, not strength.

I also had a higher-end set of hubs that came misaligned on the axle, and prevented good tightening on one side, you could check that.

I've seen the QR skewer cams get stuck, break, and fail on numerous aftermarket wheels.
I won't mention any names, like Bontrager or Mavic, but it could be related more to the care/maintenance of the bike than the skewer quality.

The cheaper non-QR skewers are very susceptible to the threads stripping, so I'd be careful with those.
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Old 03-27-11, 07:59 AM   #11
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Quote:
Originally Posted by lord_athlon View Post
Its the skewer or the hub. That simple
Yep.

1. You axle should extend ~2/3 across the dropout width.
2. Lube the skewer mechanism rreal good. Lub it, work the mechanism, lube it.
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