If we're talking about JB Weld, they have a bunch of other interesting products. My wife inherited a Scott carbon XC kinda hardtail, but the derailleur hanger mounting tab was mostly broken off the driveside dropout.
I cleaned up what was there and "made" a new der hanger interface with JB Weld Marine epoxy, which has fibers in it and to me sounded like carbon-fiber-fix-ina-tube. I wouldn't trust it with a structural repair that might cause dental work if it fails, but it's definitely good enough to mount a derailleur hanger without a worry.
JB Weld might put carbon fibers in epoxy and sell it to mountain bikers as a "carbon repair kit" and I think we would pay $80 for it.
Oct. 27, 2020, 7:24 a.m. - mrbrett
If we're talking about JB Weld, they have a bunch of other interesting products. My wife inherited a Scott carbon XC kinda hardtail, but the derailleur hanger mounting tab was mostly broken off the driveside dropout. I cleaned up what was there and "made" a new der hanger interface with JB Weld Marine epoxy, which has fibers in it and to me sounded like carbon-fiber-fix-ina-tube. I wouldn't trust it with a structural repair that might cause dental work if it fails, but it's definitely good enough to mount a derailleur hanger without a worry. JB Weld might put carbon fibers in epoxy and sell it to mountain bikers as a "carbon repair kit" and I think we would pay $80 for it.