1. Transonic
tip airfoils with high thrust and low drag for .7<M<1 free
stream.
2. 35.5mm spinner built in to match MB backplate
3. Moulded-in drive pin holes for sidewinder and upright engine
mounting
4. Straight trailing edge for easy deflashing
5, Speed gain over current F3D props of 15kph in the straight,
8 kph in the turns
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