Sprocketless Intake Rollers

Necessity something something invention. We temporarily misplaced all of our 8-tooth sprockets, so the kids came up with two alternative methods for intake rollers. What other ideas are out there?

Gears larger than 8 tooth could work.

And, the paddles don’t have to attach to chain; they could attach to beams, or other connectors


Yeah we have oodles of larger sprockets, but they were specifically trying to keep the mechanism compact and light weight so that was a no go.