Those who own or transport motorcycles understand the value of a motorcycle ramp. Loading bikes into a truck bed or on a trailer is done using a ramp that adapts to that vehicle. Dirt bikes can be loaded using lightweight aluminium ramps. But heavier motorcycles, like road bikes and vintage motorcycles, require a heavy duty ramp that provides stability under load. You can build a heavy duty motorcycle ramp using steel channel that's welded to adapt to your truck or motorcycle trailer.
Establish the length of the ramp. Lower the tailgate of a pickup truck or a flatbed trailer. Position a length of 6-inch wide-by-3-inch deep channel iron on the tailgate and determine the optimum angle for rolling the motorcycle onto and off the hauling surface.
Wear safety glasses and use a circular saw with a steel cutting blade to cut the channel iron to length. Cut an additional piece for the upper section that lays on the tailgate. The piece should be no less than 14 inches long.
Position the longer piece at the tailgate and note the angle of attachment for the upper section. Weld the upper section to the ramp. Use an electric grinder to grind the welds smooth. Prime the ramp with epoxy primer and apply two coats of epoxy paint as a finish, allowing ample drying time between coats.
Drill a hole in the upper section for a connection pin, if desired.