bkkboy

I have an infinity road bike and a Tern Link folding bike. I cycle long distances with them and, next year hopefully, I plan to cycle 800km in Spain. Some web pages recommend buying a spare derailleur hanger. These are expensive, however, and do I really need a spare? On the other hand, if one broke I would be stuck in the middle of nowhere with a bike that cannot be fixed in a reasonable time. Any suggestions will be appreciated.
Thanks in advance.

dsbrantjr

Do a Web search for "emergency derailleur hanger" and see how those prices compare to the real thing, keeping in mind that the emergency units may only "sort of" work with your bike. Hangers are small and don't weigh much.

bkkboy

Thanks dsbrantjr. The SRAM Universal Derailleur Hanger seems to be well recommended - AC-DRHG-MTB-A1. At $15 it is a lot cheaper than a brand name derailleur.

Ti473

This only works on frames that are designed for it.

For me it's worth getting one, especially if you do long miles in the middle of nowhere. You may never need it but you'll be kicking yourself in the nuts if you ever do and don't have it

cobba

Does your rear wheel have a thru axle and is that hanger compatible with your frame?

https://www.sram.com/globalassets/do...-udh-rev-b.pdf

Amt0571

I bought a derailleur hanger from my bike at aliexpress. It's not original, but does the same thing and I paid 9€ instead of 24 that canyon asked me.

I always carry a hanger for my bikes when riding long distances. Just in case.

HillRider

You answered your own question. Spare hangers are like having fire insurance; it's an unnecessary expense until you REALLY need it. Also, Murphy will see to it that if you have one you will never need it but if you don't........

veganbikes

Do you need it, no until you need it, then you NEED IT. It is a product designed to break, that is its goal because if it breaks it will hopefully save your derailleur typically a more expensive piece so having a spare for touring is probably not a bad idea. Wouldn't want to get caught out at a bike shop that doesn't carry that part and then having to wait to order it. You can get an emergency version as dsbrantjr suggested but like it says it is an emergency to limp you back home to a shop in an emergency it won't get the full gear range and may not always work on all set ups. However like he said I would just have the correct one for your bikes. It will weigh about the same and could save your behind.

I think if your bike has a replaceable derailleur hanger you should own a spare for it. Wheels MFG makes a good lion share of them and they are of good quality and made right here in 'Murica. The new SRAM unit is for frames designed for it, they want a new standard to rule them all just like all the other standards that exist to rule them all. Not a bad idea but one that keeps popping its head all over bikes. Somethings have stuck and not been changed a bunch and have a bunch of different options like bottle cage and 3 pack mounts, they all seem to be the same size these days so it is something that is actually somewhat universal (at least as far as I have seen) and not needing of other crap.

Barry2 

Bear in mind, they don't tend to just up and break.
I bent mine twice by just letting the bike fall over while stationary.
It's straightening them afterwards that can increase the risk.

I needed a hanger straightened and bike store told me "it may break".
I told them, I don't care, I've a spare hanger in my pocket.
Mechanic smiles and proudly states "then this one will never break !"

Mine was unique not only to the Brand and Bike, but also that that year.
If your hanger is in any way unique, bring one along. You won't need it.

Barry

tomtomtom123

I don't know if your hanger shape is in this list, but the union hangers are cheap. I bought one for a dahon bike for around $5 from a local seller.

https://www.marwi-eu.com/en/gh.php

woodcraft

FIFY

To the OP- having a spare is insurance not just for touring, but against down time while hunting for a needle in the haystack of hundreds of different hanger types, and even that it will be unavailable in the future.

tomtomtom123

I looked at some websites which claim to sell Tern hangers, and they seem to look similar to the ones used for current Dahon models, which is the one I have. I bought one for $5, Union hanger GH-009. You can print the PDF at 1:1 scale and place it over your existing hanger to see whether or not the shape matches.
https://www.marwi-eu.com/gh-list-dahon.php
https://www.marwi-eu.com/gh-list-dahon.pdf