Thanks so much for the responses! Bernd, I really empathize with your experience of the phantom eBay auction.
David - great idea! And it sounds extremely elegant, compared to what I was about to try (vice grips). Sheri > On Nov 1, 2015, at 6:08 PM, Dave Tetzlaff <[email protected]> wrote: > > Yup. K3s are REALLY hard to crank. > >> Has anyone developed a modification to get a better grip and/or leverage >> when cranking the K3?? > > I don't think a better grip would help much. It's basically a leverage > problem. The spring is stiff, and the little crank is close to the center > axis: compare to a Bolex crank which folds out several inches from the axis > giving a lot more leverage. > > I don't know if there was ever a manufactured product to help crank a K3. > > I does seem to me it would be easy enough to fabricate or jury rig an > extension that slips over the crank wings in the 'up' position, and has a > spinning knob on the end. I'd probably: > > Go to the hardware / building-supple store and get some aluminum c-channel, > e.g. http://tinyurl.com/pxp2lze. > > Cut two pieces about a foot long. > > Screw them together back to back, spaced apart with washers so the gap is > wide enough to fit over the K3 crank, with 4 stainless steel machine screws > and nylon insert lock nuts, two on each end. > > On the crank end they be just far enough apart so the slot fits over the > crank. Closer together on the knob end. > > Then use a drill to make a wider hole in the gap on the crank end, for a #8 > or #10 machine screw. Whatever you'd use as a knob would rotate freely around > a screw long enough to go through it and the extension, top to bottom, with > locknuts between knob and extension, and below extension, holding it on. > > Don't know if that makes sense w/o pictures, and there might be more simple > or elegant means to do the same thing, but that's all I can think of at the > moment... > > > _______________________________________________ > FrameWorks mailing list > [email protected] > https://mailman-mail5.webfaction.com/listinfo/frameworks _______________________________________________ FrameWorks mailing list [email protected] https://mailman-mail5.webfaction.com/listinfo/frameworks
