Planetary Gearbox for SPEED 500-600 3.8:1

All metal planetary gearboxes for SPEED 500 & 600

Elegant overkill! 32mm long (1-1/4" excluding shaft), 29.5mm diameter (1-3/16") outer body CNC machined from barstock, glass-filled nylon gear ring with 3 carbon-steel gears, 4mm output shaft supported by two ballbearings, mounting screws. Perfectly in-line output of prop shaft and easy 2-screw mounting to front of airplane. Use 4mm prop shaft adapters, GR605340 for regular airplane props, or HLAN2411 for folding AeroNaut props.