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!

Comments

  • woodywmb
    woodywmb Posts: 669
    edited January 2022


    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.

  • dennisn
    dennisn Posts: 10,601
    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.
  • First.Aspect
    First.Aspect Posts: 14,882
    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.
  • ibr17xvii
    ibr17xvii Posts: 1,065
    https://planetx.co.uk/i/q/FSJOGHH/jobsworth-emergency-rear-derailleur-hanger

    Something like this would be a temporary solution.