Selecting the right derailleur hanger

[Bristolian]

Hello folks,

This is probably a simple question but when looking for a replacement/spare hanger what information do you need?

Is it just the make, model and year of the frame or what else has an input to getting the right one?

Thanks in advance

 

[Cycleops]

It's a pretty tedious job. You'll need the above and then it's just a case of trawling to through the millions of hangers on a well stocked site to eyeball the correct one. eBay could be useful.
https://www.sjscycles.co.uk/replacement-dropouts/
Failing that go back to the manufacturer or their agent although you'll probably pay more.

 

[Sharky]

A browse through this lot might help ...

https://gearmechhanger.com/epages/9...4/Categories/Derailleur_Hangers/"CNC Hangers"

Is there any writing on your current drop out?

 

[Big John]

We had a wall chart in the office of the bike charity where I work that showed every single hanger known to man (when it was published, of course). There are bloody loads of 'em. More than you can wave a stick at and a lot are VERY similar so even when you see one you think is the right one by the time it turns up it's sadly not a match. All I can say is look VERY carefully (with the emphasis on very) at the pic on the internet and check it, double check it and get a third party to check it before ordering. Good luck. By the way, we have a drawful of hangers that we've taken off old bikes and with a few exceptions they're all different. Wouldn't it be nice if there was a 'standard' hanger, eh?

 

[FrankCrank]

As above, it can be a bit of a lottery.
Might be worth taking a photo of the old one, and somehow overlaying that with what you think is a good match to say, one on Ebay.
At least you can be confident the shape is in the right ball park, and maybe worth a flutter.
Last time I ordered one it was for a Dawes MTB, and I believe all of that brand use the same hanger. Not that that really helps.
Good luck

 

[Bristolian]

Thanks for the above info - looks like I need to spend some time trawling the t'Interweb

I see that there are 3D printed ones, cast ones and CNC machined ones - any advice on what to avoid? I would think cast ones would be more brittle/fragile when trying to straighten.

 

[Cycleops]

I should avoid any that are not genuine replacement parts.
Hangers are sacrificial and if not made to correct specs could defeat their intended purpose.

 

[T4tomo]

Hello folks,

This is probably a simple question but when looking for a replacement/spare hanger what information do you need?

Is it just the make, model and year of the frame or what else has an input to getting the right one?

Thanks in advance

luck, in the main you need luck.

 

[Mike_P]

One of those parts that there should be standard design of.

 

[Bristolian]

I think I have found the right one at SJS Cycles - see below.
Thanks for the suggestions/words of caution and encouragement

 

[slowmotion]

There are so many, and lots of very similar ones that are not actually compatible. As @Cycleops suggests, ask your bike manufacturer where to get a replacement. Is saving a few quid worth the risk of having to replace the frame?

 

[biggs682]

I thought they all had code on them ?
Pretty sure the few I have replaced did have but then it's been a while

 

[Bristolian]

There are so many, and lots of very similar ones that are not actually compatible. As @Cycleops suggests, ask your bike manufacturer where to get a replacement. Is saving a few quid worth the risk of having to replace the frame?

Nice idea but have you ever tried getting a response from Specialized? Their customer service email appears to be a black hole and hanging on the phone waiting for them to answer costs money when calling from the UK

Their response may be different if you're asking about buying a £5,000 bike

 

[Bristolian]

I thought they all had code on them ?
Pretty sure the few I have replaced did have but then it's been a while

I was expecting that too but I'm damned if I can find anything on the existing one, which may not be the original, of course.

 

[biggs682]

I was expecting that too but I'm damned if I can find anything on the existing one, which may not be the original, of course.

I know our tandem one is numbered