RE: Realistic Propeller Thrust Calculator?
I find ThrustHP to be fairly close, on my friends 42cc gas/glow conversion we are spinning a 20x6 at 7000, thrustHP said 22.19lbs of thrust, engine mounted on the plane and attached to a fish scale gave us 19.2lbs of thrust so that is pretty close. On my TT PRO.46 i turn a 12.25x3.75 at 12000, thrustHP said 9.73lbs of thrust, while i haven't tried the fish scale, i will say my 5lb TWIST will rocket out of my hand vertical until i let off which means i have way more than a 1:1 power to weight ratio. So all in all i find ThrustHP to be accurate enough for my calculations before mounting an engine/prop combo on my planes.