Turboprop Ultralight

A very weird sound for the airframe on this video. This guy developed his own turbine that is lightweight enough to still fall in the ultralight catagory. He hits a whopping 35 MPH according to his airspeed beaker (??). In the related videos he has others showing the engine itself and the development thereof.
Turboprop ultralight

How the Hell did he not hot start that on the relight?

Wet start.

I am going to send that link to a guy up here who rents out Ultralights to toodle around the valley in.
Does that Airspeed indicator allow for AOA? It was indicating 50+/- on his climb out.