Posted by Collin Doyle on September 15, 2005 at 21:50:14:
In Reply to: Re: Hirth couplings posted by Ron on September 15, 2005 at 20:46:21:
I suppose it most resembles a bevel gear, except for the compound angles. root and crest are angled in opposite derictions, but apparently the pitch line is not. it's a 60 degree tooth.