Shoot I think you may be correct. I hadnt thought of that aspect. Maybe it would require the central shaft to rotate a single gear in the forward direction whic

Shoot I think you may be correct. I hadnt thought of that aspect. Maybe it would require the central shaft to rotate a single gear in the forward direction which was attached to via smaller chain that rotates the axle between the two wheels...? Yeah... basically what you said in the second paragraph of your comment.... This would be a fun design challenge. Anyone Solid on Solid Works want to give it a go??? --- OH . I thin I have it, but I dont know how efficient it would be: A Worm Gear: https://i.imgur.com/BgJODdP.jpg https://i.imgur.com/BgJODdP.jpg