pic: 4speed1

[Redo91]

Originally Posted by asid61

What was the motivation behind using 5.8 pitch gears over "normal" 20p, 16p, or 12p gears?

anomalynerd stated why they make them the way they do.

Originally Posted by anomalynerd

The gears have to have a 5.8 diametral pitch because we machine them on our cnc mills in shop. The drive system ends up with either 5:1, 10:1, 20:1, or 40:1 gear reduction.

Emphasis mine.

That said, why not purchase a cutter that will cut the tooth profile of something with a larger DP? You seem to have a machine capable of using one.