https://goo.gl/UPYbdbI know some numbers are off here mainly the assumed calculation for the bevel box. If anyone knows what the actual ratio is in there please let me know, I haven't found anything here on the forum or online about it. I have to imagine it's higher than what I've given here.
Also I know the front to rear tooth count is off but there are limitations to the tool. It's still a 2:1 ratio so that shouldn't matter what it has fit the tooth count.
You can set the shift rpm and hit auto shift to see a nice little animation of the rpms speeds and shifts.