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11-13-2014 08:05 AM
Jsp
Re: Collective pitch fixed wing!

That's pretty cool. I've also seen this on some foamys down in Toledo. Really entertaining to watch.

But on another note here. I could see this being useful in a scale application. Something like a turboprop. How cool would that be to be able to feather your prop. Just like the full size .
11-11-2014 08:40 PM
frenzy
Re: Collective pitch fixed wing!

Just curious who sells 4D prop set up,would be neat on my 71''Slick.
11-11-2014 07:41 PM
twistedge
Re: Collective pitch fixed wing!

I think the plane in that video is using MAMO Upside down VPP (Link Here) (Photo 1)

Eflite also makes the Showstopper: Link Here (Photo 2)

.
11-11-2014 06:03 PM
cosmith
Re: Collective pitch fixed wing!

Quote:
Originally Posted by Midair View Post
Electric VPP (variable pitch propellers) has been around for a few years. I saw my first VPP foamy flight at ETOC in Toledo four years ago. On lightweight foamys, VPP is accomplished using hollow prop shaft motors where the pitch reversing rod runs through the shaft and is connected to a separate servo. There were three or four ETOC competitors using it four years ago, but it hasn't gained wide use, except in some freestyle routines.

...and yes, it looks very cool

Peter
Is it simply variable pitch, or do they have them with cyclic type control as well? It almost looks like a swash plate on the front of the one plane. If it is, must be some crazy mixing going on?
11-11-2014 05:46 PM
Max
Re: Collective pitch fixed wing!

Quote:
Originally Posted by cosmith View Post
Maybe I'm the last one to see this, but it's too cool not to share.

http://www.youtube.com/watch?v=6YkkZw9GVaU#t=23

Even without thrust vectoring, we could use this to mask 'throttle pumping' so nobody gets annoyed at the field! That, and 'throttle' would be more responsive.
Wow. That is one crazy video. Loved it!!
11-11-2014 04:12 PM
gixerfien
Re: Collective pitch fixed wing!

I've seen this be4 but still that vid is sooo sick lolol
11-11-2014 04:08 PM
Midair
Re: Collective pitch fixed wing!

Electric VPP (variable pitch propellers) has been around for a few years. I saw my first VPP foamy flight at ETOC in Toledo four years ago. On lightweight foamys, VPP is accomplished using hollow prop shaft motors where the pitch reversing rod runs through the shaft and is connected to a separate servo. There were three or four ETOC competitors using it four years ago, but it hasn't gained wide use, except in some freestyle routines.

...and yes, it looks very cool

Peter
11-11-2014 04:01 PM
HAL9KPCM
Re: Collective pitch fixed wing!

Just fly a helicopter already LOL.
11-11-2014 03:58 PM
cravenjw
Re: Collective pitch fixed wing!

No! I break enough planes trying to hover motor end up and do rollers with the motor leading to complicate things with a whole other degree of freedom! LOL
11-11-2014 03:55 PM
kwm
Re: Collective pitch fixed wing!

Got yours on order John?
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