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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 04-23-11, 08:26 PM   #1
Ultraspontane
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Track dropout alignment (or track end)

I'll admit that I'm a bit obsessive when it comes to mechanics. Bicycles included.

This is about my 2010 Schwinn Madison. I notice that when I slide my rear wheel into the dropouts (or track end) it doesn't sit perfectly centered between the stays (both chain and seat). I can get it centered if I move it about a bit and hold it as I carefully tighten the axle nuts. I measured the frame alignment as per Sheldon's string method, and I get 31mm on the button from the seat tube on each side.

The bike rides just fine. I can ride straight with no hands, and it doesn't show any other symptoms of misalignment other than the wheel not centering in the dropouts without a little tweaking.

Anyone else have this issue? It bugs me a bit, but that's because I'm obsessive and I really appreciate accurate manufacturing.
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Old 04-23-11, 08:45 PM   #2
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Well,sometimes thats life.Can't expect precision on the lower end.To get the cantis to work on my '85 Le Tour luxe I had to play with the hub spacing to center the wheel between the seatstays due to one being 2mm longer,leaving the wheel a bit tilted.
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Old 04-23-11, 09:12 PM   #3
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It may be your wheel and not your frame. Are you certain your wheel is dished properly?
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Old 04-23-11, 11:06 PM   #4
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It may be your wheel and not your frame. Are you certain your wheel is dished properly?
Yes. Positive.

Since it rides well, and the rear triangle isn't off to one side, perhaps this little problem could be improved with a file?

Last edited by Ultraspontane; 04-23-11 at 11:23 PM.
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Old 04-24-11, 04:10 AM   #5
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Axle, perhaps.

To expound, the axle itself may be askew. Happens a lot on the lower end, and don't even get me started on the box-store hubs---they are glaringly obvious. If you're really OCD, you can work up a temporary jig with those laser levels to really key in on the alignment of the frame.

Would check the wheel and components before taking a file to a seemingly solid frame.

Last edited by rustybrown; 04-24-11 at 04:16 AM. Reason: maooor
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Old 04-24-11, 05:57 AM   #6
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Since you can center it yourself and it rides fine, I wouldn't change anything.
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Old 04-24-11, 07:06 AM   #7
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Since you can center it yourself and it rides fine, I wouldn't change anything.
This.
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Old 04-25-11, 09:00 AM   #8
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I would file until I'm satisfied. And regret it later
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Old 04-25-11, 09:58 AM   #9
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If you just ordered/ bought it from a store/ site; I say it's time to RMA/ exchange it....

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I would file until I'm satisfied. And regret it later
You're smarter than that right?
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Old 04-25-11, 10:40 AM   #10
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screw the file, take an angle grinder to that isht.
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