The shaft spins counter clockwise and according the Veeder-Root manuals anything in the 80 to 150 rpm range would work just fine. Suggest looking in the W.W. Grainger catalog for a gearmotor and a flat adapter plate to fit and align the motor to the VR computer shaft.
I had always thought about running a 2 conductor cable thru the hose and drilling a hole near the nozzle and mounting a small microswitch with a long blade actuator so that when you squeeze the handle, the microswitch would operate thus turning on the gearmotor to spin the computer reels.
[This message has been edited by Ken Layton (edited 06-30-2001).]