RC Tank Drive Gear for M6 Drone Motor

thingiverse

UPDATE March 14, 2018: Added two motor_bracket_brushless parts with 1mm more length as the play of both gears was really close on the borders. These should give a bit more clearance. I had some Emax Drone Motors laying around which would be perfect for the RC Tank from Staind. Unfortunately, the shaft is shorter and thicker (M6 instead M4) than the Sunnysky, so I redesigned the original gear to fit a M6 self-locking nut. I had to think creatively because I didn't want to change the transmission and the gear is quite small for an M6 nut, so the only way to make it work was to insert the nut in the lower part of the gear while printing. To make this work, you need a printer with "pause on layer" feature. Most printers with current firmware (like Marlin) should work. Just download the gear, slice it according to your needs, and add the appropriate GCode command (for Marlin M600 for filament change works) on the correct layer where it starts to close the nut chamber. The printer will pause the print before closing the chamber and give you time to add the M6 self-locking nut (see picture 3). After pressing the nut in, just continue the print, and it will finish fine. I just installed the gear but haven't tested it yet. Anyway, it looks pretty strong, and I'm very happy with the result. Pictures will follow soon.