In Reply to: Re: 2N Hand Crank blueprint, dimensions. posted by Tom (WI) on December 19, 2018 at 07:50:10:
I did find one close at MICHIGAN STEEL SPRING CO. but their price is about $40 for one piece, min order 10 pieces, and it is not a LH spiral. I found another one at CENTURY SPRIN0, p/n 289, that would work as well, but not a LH Spiral either and length is 12". You'd get 2-1/2 springs out of that.