I’m with the OP – it is a sacrificial item to save mech and frame,
In my experience the mech and hanger rip out the carbon frame, writing off the frame, luckily with FS, it's normally just a new rear triangle required.
My UDH very definitely did not sacrifice itself yesterday, just a bit distorted so it was new chain, mech, hanger and spokes time. Everything bent and distorted; botheration.
I have had this with a UDH hanger, but also with a normal hanger in recent years. Whereas in the past the mech hanger has snapped off and left everything else intact.
I do feel like the mechs have become the sacrificial part anyway.
Mechs destroying frames isn't a new thing though is it.
I wrecked a Cove frame back in about 05/06 when the mech ripped the hanger out of the frame instead of breaking the replaceable hanger.
Have a few bikes with UDH. It's no different in functional terms that any of the other bikes we have with proprietary hangers.
Other than it's easy to get a replacement at short notice from almost any bike shop.
Hell you can even use a UDH with the new wireless XTR mech that I saw the other day.
Sour Cycles almost-UDH looks neat for steel frames. Not sure how easy they'd be to import from the EU though...
@Singlespeedstu Are Shimano adopting Transmission then?
