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Construction Equipment If it digs, pushes, hauls dirt "off road" post it here. |
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![]() ![]() This is a great model from Bruder and of course I had to give it a try when my son asked me if we could make it RC. Goals of this project: 1. Minimize work :-) 2. Have a fully functional model (but it doesn't need to be very strong) 3. Great sound Taking the model apart: ![]() Cut off the drive wheel axles. Expand the axle hole up to 6mm. ![]() 3D-print a hub that sits in the old wheel. A steel rigid flange coupling (6mm axle, M3 holes) is screwed to the hub with four M3x15mm self-tapping screws. The motors are 12V 62RPM worm gear motors. ![]() ![]() Fixing the hub in the wheel by drilling two small holes, one from each side, into the wheel and hub and using two small self-tapping screws M2x7mm: ![]() Cut away some plastic to make room for the motors: ![]() Make sure they fit snuggly: ![]() ![]() 3D printed a template to guide where the motor mount holes should be (3mm): ![]() Carve out the inside of the motor mounts to give room for the steel coupling. Drill a small hole from the underside to be able to reach the set screw in the coupling when it has been inserted into its position: ![]() Attach the motors with two M3x6 bolts on each side: ![]() ![]() ![]() 3D print motor covers for the motors and attach with two self-tapping screws: ![]() ![]() ![]() ![]() ![]() Re-add the tracks: ![]() ![]() ![]() ![]() |
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