Great Idea -- I'll be making one in the near future. This should also work on the K0 triangular speedo, correct?
However, it looks like it creates little peaks where the tool edge hits the radius' (see Claytons last photo, at the 7 o'clock position)... Perhaps a plier with a rounded grind on both top-and-bottom mating surfaces, with an "underbite" would be an improvement. (Now I need to find some trashed pliers and try it out).
The hardest part for me is crimping the ring back down.
I'd also like some ideas for crimping the ring back down, for both the K0 unit, and the K1-K4 speedo that Clayton refers to. Thanks!
(perhaps a sticky on rebuilding the speedo, but focused on the hardest part - the ring removal and re-install.)
I can envision a re-install tool for the round speedos, in the opposite configuration of the adjustable wrench. It would be like a 5" C-Clamp, with a custom-made duplicate flanges (eg. die). It would be mirror-imaged on both sides, and have the correct crimp profile. The length of the flanges should be short, about 1", but precisely machined or 3D printed, for the crimp profile. A soft metal for the flanges would be preferable, like aluminum or brass. Much care taken with the tightening of the C-Clamp. You would need to rotate the tool around the periphery a few times to achieve perfection. I need a Bridgeport...