gearbox for WPL B series
thingiverse
This is my custom gearbox for B series WPL trucks (straight chassis). The gears aren't in one row, the motor is in lower position so the center of gravity is lower = better for crawling. For geared DC motors with 2x M2 mounting holes with 18mm distance. The gearbox hasn't mounting holes, you can drill they where you want. What you need: 4x ball bearing (3x7x3mm) 2x 3mm steel shaft 3x 21T pinion (D13,8 x L11) 2x M2x20 screw (for motor mount) 3x M2x16-20 screw 21T pinion: diameter: 13,8mm length: 11mm hole: 3mm (4mm if you use motor with 4mm shaft) ball bearing: diameter: 7mm length: 3mm hole: 3mm
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