**EPP Peregrine, FFF-Eagle, Dragons and other Bird Planes** - Page 6 - RC Groups
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Dec 02, 2008, 06:55 PM
Registered User
That is just too cool
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Dec 03, 2008, 05:53 PM
Lee
Lee
PERFECT LANDING !!!
Lee's Avatar
I just down loaded another video. Seeing is believing!!!

EPP Peregrine #3 11-08 (3 min 55 sec)
Dec 03, 2008, 07:14 PM
Registered User
That is perfection in flight......don't know what else to say....I want one...really really bad
Dec 03, 2008, 09:46 PM
More Combat Please!
Wind_of_Change's Avatar
Love that new tail Lee. Pretty as can be.
Dec 04, 2008, 04:46 AM
Registered User
hobie14's Avatar
Wonderfull ..... that's for sure .......

I'm a great fan of FLYPARTY's EPP Eagle but this Bird would be a great stablemate ......
Dec 04, 2008, 07:16 AM
Good Better Best quest.
olmod's Avatar
Quote:
Originally Posted by Lee
What do you think? Which tail do you like best?
I like the third tailplane wich could be all moving both for rudder and elevator (uni joint) and fitted to the polyhedral wing version, it would be a nice combination for soaring types IMHO
Dec 04, 2008, 09:47 AM
Lee
Lee
PERFECT LANDING !!!
Lee's Avatar
Flyparty's EPP Eagle is gentle like a glider and I have recommended it as a trainer in my blog.

I have one of the EPP Eagles too and they are great planes.

The Peregrine is a solid fuse and solid EPP wing and made to fly as much as made to look good. Radio is protected by digging radio holes out of the soilid EPP rather than the building a box around the radio. This plane can take much more abuse. The Peregrine is easy to fly but feels fast, so for that reason I would recommend it as an intermediate plane. So far it still is only a aileron elevator throttle to keep it simple and light.

We tested it again with a speed gun and even with the bigger motor it only flies at 42 mph max even though the climb rate is much better and it is using 2x the amps. Amazing that the same airfoil in a swept flying wing with the same motor, battery and prop flies at 72 mph.

Lee
Last edited by Lee; Dec 04, 2008 at 10:07 AM.
Dec 04, 2008, 09:48 AM
Lee
Lee
PERFECT LANDING !!!
Lee's Avatar
Quote:
Originally Posted by olmod
I like the third tailplane wich could be all moving both for rudder and elevator (uni joint) and fitted to the polyhedral wing version, it would be a nice combination for soaring types IMHO
How would you build it? I'm willing to try.
Dec 04, 2008, 10:22 AM
Lost in the Sky
Richard N's Avatar

Martinet by Gerard Jumelin


Gerard Jumelin's Martinet is as birdlike as a model can be. It has no vertical tail surfaces and the videos show it to fly very well in powered and soaring versions. Plans and a web page about it are here:

http://jroger.nuxit.net/berliweb/homepage/homepage.htm

To navigate to them:

Go to the bottom of the menu on the left and click on "English."

Go back up to the second menu button and click on "Plans."

Go down the thumbnail pictures and click on the seventh one, the bird.

Richard
Dec 04, 2008, 12:35 PM
Registered User
DRITCH's Avatar

Lee your killing me.


Got one of these built. Small 30in wing and full elevator tail. Glides around nicely, but spirals in with a roll???

I was also thinking about the rudder, but wanted to get a better design down first. I'd mount the rudder servo into the elevator just behind the hinge line. Let the whole tail move up/down and then cut the rudder into the verticle stab. That way only the rudder servo wire has to deal with bending.
Dec 04, 2008, 08:01 PM
Lee
Lee
PERFECT LANDING !!!
Lee's Avatar
Quote:
Originally Posted by DRITCH
Lee your killing me.

Got one of these built. Small 30in wing and full elevator tail. Glides around nicely, but spirals in with a roll???

I was also thinking about the rudder, but wanted to get a better design down first. I'd mount the rudder servo into the elevator just behind the hinge line. Let the whole tail move up/down and then cut the rudder into the verticle stab. That way only the rudder servo wire has to deal with bending.
What did I do?

I had the same problem until I gor the CG forward and a bigger rudder.

I wouldn't have much to do other than snap rolls with a rudder. I think for the sake of weight and simplicity I will stay with AET and not go 4 channel. If I wanted to have a rudder I would have the front part of the elevator fixed and just the end move like on a conventional plane.
Dec 04, 2008, 08:21 PM
Boffin
rpage53's Avatar
Quote:
Originally Posted by Richard N
Gerard Jumelin's Martinet is as birdlike as a model can be. It has no vertical tail surfaces and the videos show it to fly very well in powered and soaring versions.
A pusher prop acts as a stabilizing vertical surface on a flying wing. By extension, a tractor can be destabilizing too.

Rick.
Dec 04, 2008, 11:23 PM
The Rave.
Thanks for these thread everyone. These type of planes offers me a link between my love for soaring kites and eagles as a child and my current R/C hobby. I always hated gliders until I saw this thread. Thanks. Will try building the turkey vulture thingy out of 6mm cell foam 88.
Dec 05, 2008, 02:51 AM
Registered User
Wish I had seen these plans earlier. I scrarch built these from pictures of an FF eagle at SEFF. We have built 12 so far. Here are some pics:













I will post some more pics when I get a chance.
Dec 05, 2008, 11:02 AM
Registered User
Quote:
Originally Posted by warhead_71
Here it is at 75% ~42" wingspan
how can you title print this out?can anyone tell me?


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