Hi, Can anyone tell me the approx. lift off speed of a supa pup, say with 80kg pilot, 20kg fuel, 4cyl 4 stroke KFM motor, on a 10 degree still winters morning, say altitude 1000ft ASL. Assuming tail lifted & elevators level. I intend doing some ground runs soon & this is good info to have. I believe that stall speed is around 38 knots?? Is it a hard stall in this plane?