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Derailer Hanger... Stripped?

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Derailer Hanger... Stripped?

Old 09-23-08, 05:40 PM
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smovlov
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Derailer Hanger... Stripped?

Hey, just bought a used Bianchi Volpe. I think the hanger might be stripped. Unless someone somewhere ever made one with no threads... I can take the derailer and put the bolt right in there. Straight in... This does not seem right. Can someone verify?

Thanks
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Old 09-23-08, 06:10 PM
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If it is stripped you can drill it out a little more and buy an insert made for this purpose bikeparts.com and thethirdhand.com have them. Or you can get a 10mm by 1mm helicoil.
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Old 09-23-08, 06:18 PM
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Originally Posted by cuevélo View Post
If it is stripped you can drill it out a little more and buy an insert made for this purpose bikeparts.com and thethirdhand.com have them. Or you can get a 10mm by 1mm helicoil.
The inserts and the drill bit needed to clean up the original hole work well and, in fact, are used by OEM to restore damaged frames under warranty. Unless you are going to have to deal with a bunch of these, see if your LBS can do the job at reasonable cost.

I don't think an M10x1.0 helicoil is a good idea. The hangar is too thin to hold one properly and the installation is far more complex than the repair insert shown above.
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Old 09-23-08, 06:19 PM
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If the bolt is long enough put a nut on the back side of the frame. Some bikes were actually made that way. Roger
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Old 09-23-08, 07:01 PM
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Does anyone think the Volpe was sold with an un-threaded hanger though? I'm trying to see if i can return it as I was sold a frame that i thought was described as solid. I dont want to tap and drill and reweld and nut and bolt and jerry rig as im planning on using it as a touring bike.

thanks for the suggestions.
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Old 09-23-08, 07:11 PM
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I think that one of those savers would be rugged enough for touring. If you were really worried, you could get two.

If it's new- I don't think it would be unreasonable to ask for a replacement, or at least one of the savers.
If it's used- I don't think it would be worth returning it and trying to find another suitable frame, but it's reasonable to ask for the seller to reimburse the cost of the saver kit.
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Old 09-23-08, 07:25 PM
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Originally Posted by smovlov View Post
Does anyone think the Volpe was sold with an un-threaded hanger though? I'm trying to see if i can return it as I was sold a frame that i thought was described as solid. I dont want to tap and drill and reweld and nut and bolt and jerry rig as im planning on using it as a touring bike.

thanks for the suggestions.

Extremely unlikely to the point of the answer being "NO". I've never seen any bike at any price point over the past couple of decades that had a hanger that wasn't threaded. They go from straight built on threaded hangers to the really cheap bikes that still use an axle retained hanger with nothing with no threads in between.

Also I've never seen any derraileur that was resonably newer that used a nut to retain them. They are all only around long enough to fit the hanger plus a couple of threads.

So it's insert time for you I'm afraid.
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