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-   -   Bikes with non-replaceable rear derailleur hanger (https://www.bikeforums.net/cyclocross-gravelbiking-recreational/1195533-bikes-non-replaceable-rear-derailleur-hanger.html)

bh85 03-10-20 03:52 PM

Bikes with non-replaceable rear derailleur hanger
 
Steel frames with non-replaceable rear derailleur hangers. Is it a bad thing? Should I stay away? Opinions? Thanks!

Koyote 03-10-20 03:57 PM

Especially for a gravel bike, which is more likely to be crashed, I prefer a replaceable derailleur hanger. In fact, I carry a spare on particularly long and treacherous races.

However, I also have a 17-year old road bike with an integrated hanger on the steel frame, and it has been bent back into shape 3x after crashes - so that works fine, too.

I certainly wouldn't let it be a decisive factor in choosing a new bike of any type.

bh85 03-10-20 04:03 PM


Originally Posted by Koyote (Post 21361089)
Especially for a gravel bike, which is more likely to be crashed, I prefer a replaceable derailleur hanger. In fact, I carry a spare on particularly long and treacherous races.

However, I also have a 17-year old road bike with an integrated hanger on the steel frame, and it has been bent back into shape 3x after crashes - so that works fine, too.

I certainly wouldn't let it be a decisive factor in choosing a new bike of any type.

Yea, haven't had a crash yet for few years, but yes, it will be a gravel bike.

bluehills3149 03-10-20 05:12 PM

On steel frames, the rear dropout is both hard and "tough" so it can withstand the quick-release scraping but the hanger is tough enough that it can also be bent back numerous times before they break. Aluminum dropouts were heat treated to a high degree to get sufficient hardness to withstand the QR stresses but this made the hanger too brittle so they just made it detachable. A broken steel hanger is very rare - even steel MTB bikes use non-detachable hangers so a gravel bike will be fine.

medic75 03-11-20 07:03 AM

What bluehills3149 said. Steel can be bent back without any significant damage. You only need to have one alignment tool instead of stocking a unique hanger for each bike you own. That tool can pay for itself after a few uses. It can also be used to tweak replaceable hangers that have just been slightly bent out of line.

I once had an opportunity to purchase a Raleigh Stuntman at a great price and didn't for this exact reason. I have been kicking myself in the butt ever since.

shoota 03-11-20 12:18 PM

I agree with everything that's been said here. Even replaceable hangers should be aligned correctly, so if you crash with either type you're aligning them both to get the best shifting anyway.

srode1 03-13-20 03:53 AM


Originally Posted by shoota (Post 21362287)
I agree with everything that's been said here. Even replaceable hangers should be aligned correctly, so if you crash with either type you're aligning them both to get the best shifting anyway.

True, that's why I've already aligned the spare in my saddle bag - it's ready to go if I need to use it after a crash on a long ride.


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