Posted by Tom Ramsey on January 25, 2010 at 18:19:16:
In Reply to: Re: setting prime number gear ratio posted by BillS on January 22, 2010 at 14:05:44:
We just cut a gear with 173 teeth. Since it is prime it is impossible to cut unless you have a CNC or differential machine. If you have a machine with the differential you have to know the "constant" of the diff. I'm not familiar with the TOS but if you can fit one more compound gear and an idler the closest I could calculate is 32/54 x 32/54 x 48/81 x Idler. This gives you an error of .0000059