Ultegra crank failure

[Daveyraveygravey]

Anyone else suffered this? It's a two piece part, bonded together, or not...
I was away at the Tour de Yorkshire, and on the Sunday my brother in law and I set off for Rosedale Chimney. Got all the way up on to the Moor, maybe 2 miles from the easier descent into Rosedale and then the climb back up, and all of a sudden my right hand pedal action got very eccentric. It's still held on at the other end of the pedal arm, and although we were over 20 miles from base, about 7 of them were downhill and there weren't any huge climbs so we chanced the ride back.
I've taken it to Giant and they have taken it up with Shimano's distributors. I've had the bike 3 years and done 19000 kms on it, but I don't think a failure like this is acceptable.

[anonymous-user]

Couple of mentions found via google of similar, including https://m.youtube.com/watch?v=kNHbEpQlMdE

Fishing tackle

[Scabutz]

Saw a picture on Instagram of someone with the exact same thing on a set of Dura Ace cranks. No doubt Shimano will claim they have been installed wrong or soemthing.

[Matt_N]

Becoming quite common on that gen of Ultegra, few threads on Weight Weenies and Bikeradar.

[gazza285]

Do you ever clean that drivechain? Crusty crap accumulated all round the chainring...

[Crippo]

How have you rubbed that part of the “Ultegra” wording off so much.. very heels in riding?