Introduction:
Testing out the KF airfoil. Build has identical components as w3631, except it uses a KF airfoil instead. 540mm
Components:
Conclusion:
Dry weight came out to 97g, which is pretty much identical to the other one.
It flies really well. It does feel a bit different than a conventional airfoil. I'd have to fly them more side by side to really feel out the differences.
Update 4/8/20 - This flies great. The 4 in bi blades perform well, although a bit loud. It did get damaged though in a midair collision with a micro warbird. Had to replace one of the servos as the gears got stripped.