Different 64mm EDF comparison

SAPAC 64mm- This one is worn out after 60 flights over sandy runway. Almost same pitch as J-power fan, but smaller in breadth. Blade hardness is the middle of the 3. The central hub is badly center. Suprising the vibration is not noticeable. Anchoring with 2 hex set screw.

J-power / Freewing 64mm EDF -Best propeller, strong hard blades. The central hub is slightly off center as it is press fit.

GWS 6 blades- smallest pitch , weak and thin blades. Hub .. pending test