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We built aluminum motor/gear housings.
We ground off the 32 pitch side of the Chiaphua adapter gear. Then we drilled and pinned the gear to a 1/4" shaft.
The we added a 15 tooth 24 pitch gear to the 1/4" shaft and pinned that.
A 3/4" shaft goes over the motor on two flange bearings. A 24 pitch 48 tooth gear couples it to the 15 tooth gear on the 14" shaft. At one end of the shaft is a 3.5" pulley for a 3/8" cog belt. At the other end of the shaft is the 10x3" Skyway wheel with the 3/4" hub and the 5/16" keyway.
An identical aluminum housing sans motor and gears supports a second 3/4" shaft, wheel and pulley. The belt couples the two wheels together.
Total reduction is 15.64 to 1
With our wheels the final FPS = 15.34
When pulling the goal, accelerate slowly ~ 5 seconds to full speed
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