Graupner 2,33:1 Gear reduction for Speed 400 Motor

Getriebe 2,33:1 Graupner 1703.03 for E-motors of the SPEED 400 series. Gear ratio 2,33:1. Used in conjunction with the SPEED 400, 6 V (No. 3321), these gearboxes permit creating other interesting drive variants. The brass pinion (supplied) has to be glued onto the 2.3 mm diam. motor shaft. The sintered bronze rear bearing may be replaced by ballbearing (No. 1703.2) 4/8 diam. x 3 mm, to boost performance.