RC Tank adaptor plate for Geared Motors

thingiverse

This is a set of adapter plates to use a pair of 37 mm geared DC motors for the RC Tank published by Staind. Parts needed: - 2 x geared motor 12 V https://www.ebay.com/itm/Lager-DC-Motor-12V-300-RPM-6mm-High-Torque-Speed-Reduce-Gear-Motor/361664472611?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649 - 2x brushed ESC (or suitable dual tank ESC for brushed motors) - left and right adapter plate - 2 x drive gear with 18 teeth - 12 x screw M3x8 with flat head - 2 x screw M4x60 (replaces the M4x50 screw holding the track drive wheel, gives a third fixture point for the adapter plate) - 6 x M4 nut - 6 x washer M4 Assembly: Print the adapter plates and two 18 teeth drive gears. The drive gears come in 4 different versions. Each has a different size of the hole for the motor axle. The gear is supposed to sit very tight on the motor axle, use the one which gives the best fit for your 3D printer. Gear_18T_0025mm means, that the hole in the drive gear is 0,025 mm larger than the axle. Drill the adapter plates with a 3 mm drill bit for the M3x8 screws and with a 4 mm drill bit for the M4 screws attaching the plates to the tank chassis. Use the M3x8 screws to attach the motors to the plates first and then push the drive gears onto the motor axles. A drop of super glue can't hurt. Solder the wires onto the motors, make sure the wires are flat against the end of the motor housing. You don't want the wires to add more length to the motors, it is a tight fit. Insert the adapter plates with the motors attached into the tank and use the two original M4 screws which held the stock motor and gear assembly in place. Replace the M4x50 screw inside of the track drive wheel with an M4x60 screw and fasten the plates down with M4 nuts and washers. Note: The 300 RPM geared motors @ 3S are quite slow but very powerful for crawling, climbing or earth/snow work with a dozer blade. I think 500 RPM might be a better tradeoff between speed and power. I already ordered some motors with 500 RPM from China, we'll see how these work. https://www.ebay.com/itm/DC12V-500RPM-Micro-Mini-Motor-Gear-Speed-Reduce-Torque