you building what????
yes its a Turbine 4.2m Glider!
here is one a dewd in the Uk put together...mine same same but my own spin on the turbine mounting system..
thats a shot of my buddys glider is Austria
this is the vid of the thing in the air with turbine...
https://www.youtube.com/watch?v=6Dzn1V7_620
cheers
H