You don’t however, have the gear reduction that the 9 speed’s first gear will have.

Hi guys, nice writeup! Just some minor clarifications, SeaComms (me, the second Dave in this story) distributed the info written by the first Dave (Valpacer) in Brisbane Australia. He did all the hard work with trial and error and ended up with this design using off the shelf parts and some good Aussie ingenuity! This…