After experiencing problems with my Boosted Board Stealth motor, I wanted to know everything about the motor. There is some spacing between the shaft en the housing of the motor. In this video I explain what is causing this problem and how I repaired the motor.

These are the dimensions of the new shaft I made:

After searching the web there is not much information available about the original motor. This is what I found out myself.

The connector of the motor is is of the type: Z910.  The Z910 plug is a popular one to find in lower power hub motors systems. It has 3 phase wire terminals good for about 30-40 amps of max current, the 5 hall sensor wires, and a 6th wire that is normally used as a wheel speed sensor in geared motors, or as a motor temperature sensor. Usually this is just called a “9 pin motor” or “waterproof motor” plug, which isn’t all that precise.

The original outside bearing is a NMB R-1980-KK with a dimension 8x19x6 mm.

The inside bearing is a NMB L-1680Kwith a dimension of 8x16x5 mm.

Manufactorer Boosted Product number T2C827 Pinion width 15.5 mm Pinion height 17 mm Pinion teeth 17 Pinion incl washers 22 mm Shaft length 75 mm Shaft width 8 mm Bearing pulley side 8x19x6 mm Bearing top side 8x16x5 mm Connector type Z910