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Rear wheel shifts to one side after ride.(7 posts)

Rear wheel shifts to one side after ride.Sid the sloth
Oct 21, 2003 6:02 PM
Okay, I'll post this once more in case no one noticed it the first time...
Has anyone had a problem with the rear deraileur hanger bolt interfering with the rear wheel axle? I noticed that the rear wheel on my road bike was shifting to one side after a ride- especially after climbing steep hills. Basically, the rear wheel moves closer to the chainstay, and sometimes rubs against one of the rear brake pads. Upon closer inspection, I noticed that both the quick release mount, as well as the rear wheel axle partially overlapped the allen bolt and nut on the removable rear deraileur hanger resulting in an uneven surface for the axle to sit on. It seems as if this is a design flaw. If the rear quick release is wrenched down tightly, it seems to hold pretty well.
So, is this a common problem with removable derailleur hangers? Are there any remedies to the situation?
I don't have any replacable hangers, but...TFerguson
Oct 21, 2003 6:14 PM
it sounds like you have the wrong bolt. Maybe it needs a thinner or counter sunk head? Maybe it takes something resembling a chainring bolt?

Allen bolt and nut?BowWow
Oct 21, 2003 9:33 PM
What kind of bike? It's been a while since I've owned a bike with a replacable hanger - been riding steel for quite a while now...

If I remember correctly, the hole in the frame where the derailleur hanger mounts is threaded, or the derailleur hanger itself is threaded, so a nut should not be needed. You may have the wrong size bolt?

Also, the bolt holding the hanger in place should end up flush with the face of the hanger, so no head protrudes. This gives a smooth face for the quick release to grip onto.

Is your quick release lever on the opposite side of the frame from the derailleur? If your lever is on the derailleur side it could be interfering with the hanger mount.

Post a photo if you can, and check for threads in the frame or hanger - you may have the wrong bolt holding the hanger on.
Allen bolt and nut?Sid the sloth
Oct 21, 2003 9:59 PM
The bike is a Scattante R-550. It's basically a Supergo house brand. The hanger is not threaded, and in fact came with the allen bolt on the outside of the frame with a nut on the inside of the frame. It's basically the same nut and bolt used to attach chainrings. I'm positive this is the correct bolt since the bike is brand-new and I haven't done any work to the derailleur hanger or bolt.
The surface looks pretty flush, but it may protrude a little. The quick release lever is on the opposite- non-drivetrain side of the bike. Sorry I can't post pics- no digital camera :-(
Oct 21, 2003 10:31 PM
Is it possible to file the head of the allen bolt down a bit so it is flush with the hanger? Sorry, but that's all I've got...

Or is it? I just remembered reading some time ago about certain brands or kinds of skewers not holding as well as others. Something about aluminum clamp faces slipping? If you have or can borrow a set of (heavy) steel skewers to give them a try? Perhaps someone else knows more?

Sorry - I hope this will at least get you moving in the right direction!
Good idea...TFerguson
Oct 22, 2003 5:22 AM
Try a set of real Shimano/Campy QRs. I used to pull my Rolf QRs out of a horizontal dropout.

Good idea...Sid the sloth
Oct 22, 2003 9:10 PM
Cool, thanks for the ideas. I tried sinching down the bolt, which it needed. I think this may help prevent it from protruding. Also, I may do some machining, and shave the surface of the nut down a little. If all else fails, I'll swap out the skewers, since the stock ones on there are probably not the best.