I plan on making a portable handcrank for my treadle machines. I know it should mount to the back of hte machie, but if I rotate it sideways, I can mount it to a board (or other support) that lines up behind the machine, and still have the crank hook correctly into the flywheel. I want to make something adjustable so I can use it with any of the treadles, since I'm also making bases for them so they can all fit into the same treadle base. I don't have room for a lot of bases, but I sure have a lot of machines.