So now that I have the motor, I have been looking at designing my swingarm. Many of the versions I have seen online use a double-sided swingarm, often using welded tubes and bar stock to create the right geometry. I've decided that I'd like to use a single sided arm to stay most faithful to the single-sided nature of the original bike. This will connect the hub-motor/wheel to the frame at the front and the shock absorber at the back. As with many scooters, the engine was originally part of the swingarm assembly, the gearbox output directly attaching to the rear wheel. It's not an obvious shape/size: it has to fit within the frame as built more than 60 years ago and have precise mounting holes for the motor, brake disc, and rear shock. I have mocked it up with bits of wood, to see if it will work, and it looks like it should be fine! Basic Swingarm version 1.0 is complete.
