Propellers

[makem&breakem]

Hi guys is there a difference between a pusher and a puller prop?

 

[Hondo76251]

Hi guys is there a difference between a pusher and a puller prop?

Just how you mount them.

The numbers go in the direction of flight, regardless of the motor being in front of or behind the prop.

 

[Flying Monkey fab]

What Hondo said is correct but you can buy a right hand instead of a left hand so that you can less problems with the prop nut lossing.

 

[quorneng]

motorhead
With electric you can easily reverse the motor direction of rotation so the same prop can be used as a pusher or puller provided the numbers on the prop face the direction of flight and the motor direction is set correctly.
Most IC engine have a fixed direction of rotation so they need a specific 'pusher' prop with the blade pitch angle reversed.

 

[SSgt Duramax]

All of the above is correct. What flying monkey is talking about, is that if your motor is turning "the wrong way" the impulse when the engine accelerates and the propeller wants to stay moving the same speed can cause it to loosen up the nut holding the prop on. I've lost a prop or two like this. A nylock nut alleviates the issue. They also sell electric motors with reverse threads to keep this from happening. The most important part as hondo points out is to make sure the letters and numbers are aimed the direction of flight.

 

[makem&breakem]

Thanks everyone for the info happy flying.