Can anybody tell me a good crank size for an ultimate wheel?
I would think that smaller would be better, as your input would have less effect on the wheel, hopefully reducing wobble, but having a longer length means more control, and many comercial producers make them with long crank lengths.
I am using a 24" rim, and I am making one with plywood disk in the center, so I could make the crank length any size I like.
Mostly for weight reduction. I chose to make the plywood disc 1/2 inch thick rather than the more common 3/4 inch, so it’s way lighter, but sufficiently strong with no stability issues. Rides smooth and true.