Originally Posted by
DeadGrandpa
I have a Jamis Renegade Expert, and it has attachment points for a rear rack. Starting an attempt on the GDMBR, south to north a few years ago, I overloaded my rear rack panniers (far less than 20kg). The rack attachment bushings pulled out of the seat stays on the first day. I epoxied them back into place. When I hit the hills north of Silver City, the front shimmied down every grade. I turned around. Wrong bike.
Thanks for the word of warning. In *theory* rackmounts on a carbon bike could be quite sturdy. Do you have a sense of whether your situation was unusual? And have you heard about this happening on other carbon bikes with racks (more-so than any other bike -- aluminum or steel - with rack mounting points would suffer from this problem)? Clearly there are lots of carbon bikes being designed to take racks. Here's a list of 50 such models (dated from 2018) on the web:
https://www.cyclingabout.com/carbon-touring-bikes/