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Old Dec 02, 2008, 06:55 PM
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Connecticut, USA
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That is just too cool
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Old Dec 03, 2008, 05:53 PM
Lee
PERFECT LANDING !!!
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USA, UT, Orem
Joined Jul 2004
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I just down loaded another video. Seeing is believing!!!

EPP Peregrine #3 11-08 (3 min 55 sec)
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Old Dec 03, 2008, 07:14 PM
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That is perfection in flight......don't know what else to say....I want one...really really bad
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Old Dec 03, 2008, 09:46 PM
More Combat Please!
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Utah
Joined Dec 2003
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Love that new tail Lee. Pretty as can be.
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Old Dec 04, 2008, 04:46 AM
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hobie14's Avatar
Western Europe 52.7 N 8.9 W
Joined Jul 2007
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Wonderfull ..... that's for sure .......

I'm a great fan of FLYPARTY's EPP Eagle but this Bird would be a great stablemate ......
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Old Dec 04, 2008, 07:16 AM
Good Better Best quest.
olmod's Avatar
Australia, VIC, Cranbourne East
Joined Apr 2004
10,512 Posts
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
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Old Dec 04, 2008, 09:47 AM
Lee
PERFECT LANDING !!!
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USA, UT, Orem
Joined Jul 2004
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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
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Last edited by Lee; Dec 04, 2008 at 10:07 AM.
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Old Dec 04, 2008, 09:48 AM
Lee
PERFECT LANDING !!!
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USA, UT, Orem
Joined Jul 2004
9,052 Posts
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.
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Old Dec 04, 2008, 10:22 AM
Lost in the Sky
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Burleson, Texas
Joined Jun 2003
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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
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Old Dec 04, 2008, 12:35 PM
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DRITCH's Avatar
ST.LOUIS
Joined Aug 2006
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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.
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Old Dec 04, 2008, 08:01 PM
Lee
PERFECT LANDING !!!
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USA, UT, Orem
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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.
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Old Dec 04, 2008, 08:21 PM
Boffin
rpage53's Avatar
Victoria, BC, Canada
Joined Apr 2001
3,397 Posts
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.
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Old Dec 04, 2008, 11:23 PM
The Rave.
Singapore Paya Lebar, Singapore
Joined Aug 2003
766 Posts
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.
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Old Dec 05, 2008, 02:51 AM
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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.
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Old Dec 05, 2008, 11:02 AM
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S/W Wi
Joined Oct 2008
143 Posts
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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