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Derailleur hanger advice for a nub

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Derailleur hanger advice for a nub

Old 08-07-11, 01:41 PM
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Pynchonite
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Derailleur hanger advice for a nub

So I'm rebuilding what once was a '75 Schwinn road bike (model unknown). I'd bought the frame and a few attached pieces from a rebuilder who'd cannabalized the rest of the bike, including the rear derailleur and hanger. Now, I'm VERY VERY new at this, and for the life of me, there's nothing near the rear dropout that looks to me like a forged hanger/place to put a derailleur hanger. It does appear to have matching places to put a fender or rack, but I'm not sure if these are sufficient for a place to put the hanger. Anyone have any advice, or has anyone run into the same situation?
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Old 08-07-11, 02:01 PM
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If I'm following your description correctly, my initial reaction is that you have a frame that was not engineered with a derailleur hanger. Many, many road bikes fit that description - particularly lower and mid-range Schwinns. What you will need is a separate derailleur hanger (some call them a "claw") that can be mounted to the RD and the "claw" portion fits between the wheel bolt and the drop. There are many, many versions. Here's the first one I saw in Google just now:

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Old 08-07-11, 02:55 PM
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This is what you need:
https://www.loosescrews.com/index.cgi...id=42791320789

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Old 08-07-11, 03:13 PM
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Thanks for showing the correct one, OFG. I just looked at the one I included and realized it might confuse the issue even more.
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Old 08-07-11, 03:14 PM
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Originally Posted by Old Fat Guy View Post

yup.
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Old 08-07-11, 03:29 PM
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Thank you! If I understand it right, the hanger basically means that I don't need to mount the derailleur directly on the axle? Because, well, that would be $ \^/ 3 3 T.
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Old 08-07-11, 03:33 PM
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Sometimes you can pick up very cheaply a RD that is pressed into the hanger. If you leave in Ann Arbor, I'll give you one.
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Old 08-07-11, 04:22 PM
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Originally Posted by Pynchonite View Post
If I understand it right, the hanger basically means that I don't need to mount the derailleur directly on the axle?
You can't mount it that way: The derailleur is designed to be some distance from the axle. If you somehow managed to screw it directly onto the axle, the jockey pulleys would hit the rear cogs.

You can buy a derailleur with a built-in hanger, or use the adapter pictured above. Screw the derailleur onto the claw first, then put the claw into the back of the dropout. Screw in the plate to hold it in place. When you put the wheel in the dropouts, the right side of the axle should be against the inside of the claw. Adjust the left side accordingly to get the wheel lined up. When you're done, it's look like this:

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Old 08-12-11, 11:32 AM
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Thanks for the offer, Old Fat Guy, but I'm far, far away (Go Hawks!). Also, thanks sillygolem for the installation advice. Just received the part today, and I'm going to try to install it soon's possible. The very one pictured above, in fact...
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