The Pics below show the overall layout followed by a side elevation which shows the pillow block stops and the plan which shows the hole where the motor will sit plus you can see the axles in the diff case, finally a side elevation which shows the motor output, a small sprocket (13 teeth) will be attached to this shaft, a chain will drive the spool via a 39 tooth sprocket the sprocket chain combo will provide the final drive reduction of 3:1