I have seen the FW converted to hand crank. One way to do it is with a steering wheel knob. Miriam has posted some machines with this "suicide knob". It is very slow -- one stitch per revolution. However I wonder if you could replace the handwheel with a spoked one, and then get a hand crank for it. I think you would have to wind bobbins ahead of time since the bobbin winder rides on the handwheel. Another option for the FW might be cutting a notch in the wheel for the crank. I've never done any of these things but I've seen them posted on the board. I think it might be Steve H who notches out wheels. I think I also saw a tutorial about it on treadle on.