Counter rotating folding propellers

[roberto]

there is only 2 kinds of props, that´s for sure

[Jake Bullit]

Have you had a look at robotbirds website, or electricwingman ?

[bicycle]

I know you can't flip a blade over to make it push air the other way. The OP says there is a difference between a pusher prop and a puller prop that is my question.

Ah yes, I think that is because gas motors only spin one way so if the motor was rear-facing (pusher) then you needed a different prop. So "Reverse-rotation" and "pusher prop" are usually interchangeable when it comes to electric motors. Of course some manufacturers like to be different or do their own thing.

[sircana]

What does 'reverse rotation' do that is different from flipping a blade over?

I know you can't flip a blade over to make it push air the other way. The OP says there is a difference between a pusher prop and a puller prop that is my question.

Ah yes, I think that is because gas motors only spin one way so if the motor was rear-facing (pusher) then you needed a different prop. So "Reverse-rotation" and "pusher prop" are usually interchangeable when it comes to electric motors. Of course some manufacturers like to be different or do their own thing.

The Aeronaut "reverse" ones, as far as I am able to see from the photos, are different in the way the attach to the spinner. The shape of the central section of the blades is different, which makes sense: my conventional CAM carbon blades, when used in a pusher setup, come 10-12mm closer to the trailing edge that the spinner itself, because of the shape of the central section, which is designed for pullers. This has nothing to do with the fact that they are CW or CCW. I hope you undertand what I mean...

[wingnutz]

It is completely different.I'm no engineer,but i can tell you-find a reverse or the motor you reverse the prop on will either vibrate alot and/or lag WAY behind the the other.I tried flopping a prop on a canard stick I had-with way less than stellar results.