Quote:
Originally Posted by Travis Covington
We have made shafts similar to these since 2007. The 2006 shafts were slightly simpler and didn't have the 5/8" hex. Each year the shaft changes slightly as well, usually to accommodate differing gearbox configurations, wheel width changes, etc.
The tolerance on the hex portions of these shafts is +-.0005, but that may be overkill depending on the precision you require and the amount of slop you deem acceptable.
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We no longer made them this way, but just for reference to everyone our very first set was made on a manual lathe, and then hexed on a manual mill with a cnc indexer (just lets you specify rotation angle). We've also made a few in house as a proof of concept, and simpler ones for other systems, both on a manual mill and manual lathe.
For season our sponsor with a live-tooled lathe runs them, the next best thing to a screw machine in this case.