Old 12-20-10, 01:03 PM
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Originally Posted by jonwvara View Post
You're right, it's a bad picture with a lot of glare. But the outside of the hanger has not been filed or altered. There's no stop, and the chrome is untouched. The only issue is the big hole, which as you can see is clearly off-center.

Maybe the Duopar with the hanger is the way to go after all.
The off-center hole is not a functional concern. Simplex derailleurs were designed to use a 9mm unthreaded hole; a 10mm threaded hole is not a problem.

If you have problems with the lack of a stop tab on the dropout, you can always tighten the mounting bolt securely in the proper position so the derailleur can't rotate out of position.

N.B. This does make wheel changes more difficult since you will likely need to loosen the mounting bolt to remove the rear wheel, but how often do you really do that? Just make sure you carry the proper wrench with you in case you flat.
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