Login required to started new threads

Login required to post replies

Scratched up carbon around BB.
Quote | Reply
From time to time, if I drop my chain on my Cervelo P3 - happens a few times a year - if I keep pedaling at all, the chain gets dragged up in the bottom bracket area. As my season just recently concluded, I took my crank off to clean up and really inspect the area. As you can see, its scratched pretty bad, and there's even a bit of a gouge in that scraped up area.

Do you think this is just cosmetic or is more serious and in need of attention from someone that can repair the carbon. Also, how the hell can I stop dropping my chain? I get my bike maintained by my bike shop on the regular, but sometimes chains drop, right/wrong? I seem to drop it the most at the top of hills when I'm getting back into the big front ring. I'd say I dropped it 4-6 times total this year while training for 2 half and 1 full Ironman races.

I did just get some Muc-Off Bike Protection Tape that I will put over the area - but wanted to see if anyone here had strong opinions/suggestions on the matter. I appreciate any feedback.





Quote Reply
Re: Scratched up carbon around BB. [IronMark_81] [ In reply to ]
Quote | Reply
That's right about the point where I would recommend a closer look if I was working on the bike. At minimum I'd run an endoscope inside the frame to see if there was any full thickness damage visible, and I'd be checking to see if there were any bits of carbon delaminating on the outside, and seal them down or patch if so.
On the positive side, that's a good place for this, really unlikely to result in catastrophic failure even with a full thickness gouge.

Tech writer/support on this here site. FIST school instructor and certified bike fitter. Formerly at Diamondback Bikes, LeMond Fitness, FSA, TiCycles, etc.
Coaching and bike fit - http://source-e.net/ Cyclocross blog - https://crosssports.net/ BJJ instruction - https://ballardbjj.com/
Quote Reply