To internally splice it only, you could temporarily remove the overstructure and use epoxy and a piece of all-thread to internally splice it. To increase bonding between the epoxy and the carbon, you can roughen up the inside of the carbon fiber tube with a round file. If the crack was towards the bottom, you could turn the frame upside down, fill the carbon tube with Simpson SET epoxy and quickly insert the rod. Then flip it right side up, stuff the end of the rod into the stub on the other side of the break, and pry with knife blade to get penetration into stub. Tape it up to keep epoxy from oozing out. Quickly bolt it back into place so you get the correct alignment.
To splice it both externally and internally, get yourself a 6 inch piece of aluminum electrical conduit with inside diameter greater than the outside diameter of the carbon fiber tube, and a 6 inch piece of threaded steel rod with O.D. smaller than inside of CF tube.
Remove overstructure. Roughen up the outside and inside of the CF tube near the crack. Twist frame to insert epoxy buttered rod, and slide 6 inch length of conduit over outside CF tube. Realign CF tube and pry rod with knife to get the all-thread to slide past break before the epoxy sets up. Then slide conduit into place, tape off lower end of conduit and squirt epoxy into the conduit to fully encase the CF tube. You could be riding in a couple of hours. You could carry all of the equipment to do this, in your vehicle but you would want to warm up the epoxy and the carbon fiber before assembly, by using your vehicle heater.
To splice it both externally and internally, get yourself a 6 inch piece of aluminum electrical conduit with inside diameter greater than the outside diameter of the carbon fiber tube, and a 6 inch piece of threaded steel rod with O.D. smaller than inside of CF tube.
Remove overstructure. Roughen up the outside and inside of the CF tube near the crack. Twist frame to insert epoxy buttered rod, and slide 6 inch length of conduit over outside CF tube. Realign CF tube and pry rod with knife to get the all-thread to slide past break before the epoxy sets up. Then slide conduit into place, tape off lower end of conduit and squirt epoxy into the conduit to fully encase the CF tube. You could be riding in a couple of hours. You could carry all of the equipment to do this, in your vehicle but you would want to warm up the epoxy and the carbon fiber before assembly, by using your vehicle heater.