​This is wheel "pod".  Originally a 72 V DC motor located on the back side of this pod drove a planetary gear system in this hub.  The actual wheel and urethane tire bolts on to the outer flange.  What you see now is a 6 spline stub shaft inserted  in  a hub city coupler which in turn couples directly to  the 1" keyed shaft  of a hydraulic motor.

This is the bell housing I purchased then modified to couple to this dual hydraulic pump.​

One pump drives the hydraulic steering motors via 4 Bosch hydraulic proportioning valves.  (This unit has four wheel independent steering.)  The other pump drives fork lift, mast traverse, fork tilt and main propulsion motors.

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​DC motor controller and various contactors used to be housed here. 

​1.6L GM industrial motor to be fired by Microsquirt engine controler through Quad spark ignitor box to the waste spark coils supplied with motor from GM.  Original 60-2 missing tooth reluctor wheel driving original hall effect sensor will trigger the Microsquit.