Next ...

Our first tests with the vehicle will be on a dynamometer where we collect data on the prop at static thrust (wind speed). We will also use the vehicle as a 'dynamic prop stand' by running it (push or pull?) up and down the runway in still air at different speeds, collecting data from our instrumented hub.

Before we build our two spools for the spool transmission, we want to make sure we get our gear ratios optimized. I ordered up a large recumbent bike sprocket for the prop shaft (65t) and purchased a 9 speed cassette for the drive axle. This will give us a selection of ratios to work with. Additionally, the chain drive will be our less efficient (we believe) backup transmission if our spool drive adventures don't play out.

The next challenge will be to mate the cassette on the left to the hub on the right. Not exactly sure yet how to get that done ... thinking cap on.