Originally Posted by David D.
not really a jackshaft i guess, my idea is a full width keyed drive shaft with a sprocket on each end to drive the wheels, and a sprocket to the engine in the center, and a pillow block at each end and one near the center sprocket...
The shaft sounds like a good idea, but you can have a shaft just as you describe only with a differential in the center. Also the diffy I'm referring to needs pillow blocks out towards the ends and none in the middle at the sprocket because of the way they're made internally. I've posted a link so you can see what im talking about. I found one on ebay a few years ago for $30. Differential, Peerless 100-008A - Tecumseh 794347 : Farmers Exchange