Son's Cervelo S3 cleaned and put back to 'race' spec - outer chainring added, bottle cage, bar tape back on.
Then we looked at the PlanetX that
caused us problems at the national hillclimb.
@fossyant 's suggestion a replacement hanger was added on Saturday and there wasn't
that much missing off the rear corner. It's mostly small chunks so we've spent the day effecting a repair; it's not pretty but works.
Then to the parts - we discovered that the problem is being caused by the chain coming off the bottom jockey wheel so it was catching and snapping the mech hanger:
- the chain was twisted so I've replaced the section of KMC X11-SL chain that was damaged rather than fit a new one as it's done under 20 miles.
- the rear mech cage was also twisted so a replacement Dura-Ace 9000 derailleur was fitted.
- the mech hanger wasn't great either so he straightened it using a hanger alignment tool and my 16yo's learnt a new skill.
Wheel back in, cables in and with some adjustments he's got a working bike again. The resin repair needs to cure properly but it looks like the frame's OK.
Unfortunately hillclimb season's finished for 2020 so Strava KOM hunting it'll be
Total cost has been minimal; we had the fibre resin anyway, the replacement chain parts were from the original and it's just a spare rear mech we've used and I'll find a replacement cage for the one we took off. If it doesn't work he's learnt some things and we've lost nothing really.