10x6R eliche (Counter Rotating) (5Pcs / Bag)
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it realy turns in both directions. great.Good props but a bit brittle for learning flightsPerfect to mix with rotating propeller for my tricopter.bom custo beneficio, tima resistncia a impactos, tima qualidade.My friend uses these on his quadcopter. good quality and cheapDecent sized props but terrible balance. Have to remove quite a bit of material from the heavy blade to balance. Not recommended for multirotor aircraftgreat product, used in conjunction with counter-rotating sisters.
excellent propellers for quadricopter , easy to balance. excellentGreat props. Awesome for multistory applications. Very good for semi sacrificial applications (people learning to fly multirotors).
Note that whilst the standard direction is quite well balanced (only some need a small strip of tape) all off the counter rotating props are quite out of balance (too light on the side without the 10x6R written on it - this was the case for the 40 counter rotating props I have balanced), it is highly recommended to balance the props especially for camera use.
If you need a stiffer prop the master airscrew series have some good props.These props are way out of balance. Required balancing. But After Good balancing using magnetic balancer. no vibration on my Quad copter.These work well on my T-copter.
They do need balancing if you want to keep the vibrations down, especially if you will be carrying a camera.
Be nice if HK stocked some 11" counter rotating, as well.