Looking for a good continuous-rotation servo? The Grand-Wing Servo GSV0008A is a well proven unit!
This tiny unit from GWS comes with a ball-bearing supported shaft, Futaba connector, and accessory kit.
Didel specially made nice aluminum brackets to fit the GM17 gear motor. Super light for very efficiently built robots!
Here's a really cool quadrature encoder and motor driver for the GM17 Gear motor designed by the micro-specialists at Didel.
Didel Module 0.3 Gears - 9 Teeth pinion, 0.61mm bore (4mm short pagers)
Didel Module 0.3 Gears - 12-tooth pinion, 0.97mm bore for 1mm shaft
Didel Module 0.3 Gears - 36/12-tooth spur, 0.69mm ID
Didel Module 0.3 Gears - 48/12-tooth spur, 0.76mm bore
Didel Module 0.3 Gears - 81/12-tooth spur, 0.78mm ID
Didel Module 0.3 Gears - 9-tooth pinion, 0.81mm bore, for 6mm and several 7 mm pagers. Measures 4.47 x 3.14 x 3.14mm.
Didel Module 0.3 Gears - 12-tooth pinion, 0.78mm bore, measures 3.50 x 4.00 x 4.00mm.
12 tooth pinion, 0.82mm bore for 6mm pagers. Measures 3.46 x 3.96 x 3.96mm.