2305 Series Brass, MOD 0.8, Servo Gear (25 Tooth Spline, 40 Tooth)

This 40 tooth servo gear is most commonly used to drive the 80 tooth hub gear, spaced 48mm away, in order to create a 2:1 ratio.  This gear reduction will increase the torque at the hub gear to 2x what the servo produces.  This gear may also be used to drive a 20 tooth pinion gear spaced 24mm away for a 2:1 overdrive if you’re set out to increase the rotation of the servo.