Well im a bit slow at getting things up but found a few pictures that ill put up of the first project.
Built within a week the BMX was to be entered in the mopedathon - a 6 hour endurance race limited to 50cc bikes of any kind. The motor was simply strapped to the BMX and ridden for approx 5 hours straight, due to issues with the the spark plug cap destroying itself.
Got up to 45kmph down the back straight and was faster around the corners than the RJ50's but as soon as they changed gears they took off on the straights. Pedalling and accelerating out of the corners was a bit dodgy when it would start to wheel stand, but was good for showing off past the finish line.
Next project, which is currently underway for the next mopedathon, will be a BMX cut frame to fit the engine between the legs, with a shifter kit and either an in hub rear 3 speed or derailier to get up to around 60kmph.