Advice, please.

[ojingoh]

Bottom side of the downtube is engineered to be the strongest part of the bike. If there's a crack here, it should not be ridden.

Edit: per this pic:https://goo.gl/images/DXbDGP
It looks like the back side of the seat tube?

[dddd]

I am having trouble in terms of imagining the location from just these close-up photos, but unless the rider is particularly big and/or strong and hard-riding, I will assume that the generous factor of safety built into production frames makes this still safe to ride and unlikely to affect the frame's useful lifespan or performance.
I would love to be able to buy such frames at a deep discount when the owner cannot be convinced that their frame won't asplode.

[weisan]

If it's a medium, please PM me.
http://forums.thepaceline.net/showthread.php?t=210877

[sdrides]

If it was...

My bike: probably (but not definitely) just ride it and keep an eye on it.
Friend's bike: same as above, with a dutiful warning.
Customer's bike: recommend to send it to Calfee for repair.

[oldpotatoe]

Originally Posted by SpokeValley

A friend crashed last weekend and as I was inspecting his bike I found this. Apologies for pix. I changed position to change the lighting.

This is the curved section rear of the seat stay on a 2016 Giant TCR. The clearance is pretty tight. The ding isn't soft and I don't see any cut fibers.

The wreck was in a paceline and damage was pretty much the front wheel.

The damage in the pix was unlikely from the crash. Customer didn't know it was there.

I think a sticky rock from some of our fine chip seal attached to the tire and spun around to cause this.

So, hallowed assembly...

Safe?
Repair recommendations?

Send the frame to a reputable carbon repair place and have them evaluate..it's what they do. Remember, carbon fails/breaks..it may or may not give warning that the seat tube 'may' break..don't think I'd trust it on an aggressive, high speed downhill.

[SoCalSteve]

Originally Posted by Clean39T

I'm not saying what to do, but beware the negativity bias - there may be a ton of folks who had good experiences and never posted a review (here or elsewhere). Always good to be discerning though and ask questions...get it in writing, etc.

I don’t post negative reviews of stuff, people, places or companies unless I feel really strongly about something that went wrong.

Ruckus is one of those places. And yes, there may be many happy people who had work done there. The person who recommended them to me was happy with their work...

All I know is, I would not send ANYTHING to them again to be repaired after my experience with them. Something is up with their business-people. Not a clue what it could be, but it’s not good.

Also, I do think the tap test will be a good starting off point. There are a few other smaller businesses that do this kind of repair work on carbon. I do believe there is a smaller shop near Calfee that they farm some of their work to. I also think the owner used to work for Calfee. Name alludes me now, sorry.

[SpokeValley]

Great answers, all. Many, many thanks.