Sprocket cutters are the same situation as gear cutters, so far as numbers of teeth are concerned; there is whole set of them for various numbers of teeth.
I'm still trying to locate the correct sprocket online, E-Bay etc but if push comes to shove I think I'll buy a tooth cutter for the size of sprockets I need and mill it out of 7075 aluminum (530 chain on this motorcycle) and my mill is a manual Bridgeport clone and that is basically what will be used (although might use the Lathe for some parts of it).
7075 comes in a couple of forms and I'm wondering if there is much difference in machinability between T6 and T651, both of which seem to offer the best properties for what I want in a bike sprocket and are (I hope) faster and easier to machine that steel. Any thoughts or experience out there with these alloys.
I regularly have to source rare sprockets. PBI and Rebel Gears have never let me down.
They had the spec for a first year Kawasaki that only a dozen were made. I love making parts, but sometimes its really just for the exercise.
Well, we found a sprocket, turns out the later series of 350 Yamaha street bikes used the identical mounting and bolt pattern just a different pattern in the lightening holes so I left it. I'll check out those guys if I'm stuck in the future, cheaper and simpler than producing my own. Piece of T6 aluminum was going to cost me $65 (Canadian) just to make one sprocket.
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