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n00b questions about hangers/dropouts

Slowly preparing for my first cycling trip abroad in spring and several videos recommend taking a spare rear derailer hanger. Just in case.
I ride a 2018 Giant Defy 2018 Advance Pro 1 - Ultegra 8000 - Thu Axel
From what I can see it's a direct mount and uses this Giant specific drop out:
https://www.thebikerackyarm.co.uk/components/gears-drivetrain/2020-giant-tcrdefy-dropout__5497
Then there is a Shimano bracket that attaches the mech to this dropout?
https://www.ebay.co.uk/itm/274760028614

Are one or both of these what I should be getting? It seems a sturdier system than the older quick-release hangers most tutorial features. Are they as prone to bending/breaking these days?
Any help or advice welcome, thanks!

Posts

  • oxomanoxoman Posts: 10,045
    Not sure why you would carry a spare hanger for a roadbike tbh. MTB yes. If you just touring then your pretty low risk of crashing I'd have thought. Some people would have you think you need to take everything including the kitchen sink. I ride regularly and in over ten years never broken anything on a bike, scratches yes. It's a risk you take. Personally I'd just take the normal stuff and if touring unsupported and alone I might take a spare tyre. Also if ìf a rear hanger goes that's a pretty hard knock so chances are you will have damaged the bike pretty substantially.
    Too many bikes according to Mrs O.
  • woodywmbwoodywmb Posts: 660
    edited 15 January


    Giant's hanger finding site lists the first one you mention as a replacement for that bike. I have bought two similar versions previously on separate occasions - one from Giant, the other from an online business. The Giant one was twice the price but I felt it was better finished and more robust than the cheaper one. I am still using the Giant one and haven't needed to straighten it. The other one snapped with some small adjustments using an alignment tool.

  • dennisndennisn Posts: 10,579
    Are broken hangers and dropouts really a common thing these days? I have never had anything other than a steel bike, yet NEVER broken either a hanger or dropout. Just curious.
  • oxomanoxoman Posts: 10,045
    TBH they tend to be more prevalent on mtb and cyclocross bikes when riding overrides ability. Most roadbikers don't suffer failures unless coming a cropper.
    Too many bikes according to Mrs O.
  • First.AspectFirst.Aspect Posts: 8,251
    Di2 puts much more of a jolt through the system than mechanical. I've had one fatigue for that reason.

    A hanger is such a small thing to take with you, and can be snapped if you drop a chain, so seems reasonable advice.

    Pretty much anything can be obtained from there guys

    https://wheelsmfg.com/derailleur-hangers/all-derailleur-hangers.html

    You will definitely find one for the big brands like Giant.
  • ibr17xviiibr17xvii Posts: 906
    https://planetx.co.uk/i/q/FSJOGHH/jobsworth-emergency-rear-derailleur-hanger

    Something like this would be a temporary solution.
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