Aircoop twin rudder  
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Aircoop twin rudder - 1/11/2005 7:33:56 PM   
flyer495th



Posts: 195
Joined: 10/29/2003
From: Townsend, MA, USA
Status: offline 		I have a 75 year old friend that is trying to build one of these planes. But is questioning what to use for the unit to move the twin rudders. Does anyone have any information on how it was done. Years ago Sig made a 1/4 scale one he thought! Any information that can point me in the right direction is greatly appreciated!

Bob

< Message edited by flyer495th -- 1/11/2005 7:34:50 PM >
       Post #: 1

RE: Aircoop twin rudder - 1/11/2005 9:54:56 PM   
harvee


 

Posts: 54
Joined: 5/25/2003
From: Northborough, MA, USA
Status: offline 		The original name was ERCOUPE---- short for Engineering Research company. Later on they
were renamed AIRCOUPE. Still later they were made by another company who called it the
ALON AIRCOUPE.
These airplanes had a wheel control, but NO RUDDER PEDALS.
When you wanted to execure a turn- like a right turn- you steered the control wheel right which resulted in right aileron, and through a system of internal linkages and stuff, the right
rudder would deflect to the right, around (7)degrees. The control wheel also operated the elevators, in a push-pull fashion. The twin rudders were not connected together but operated with the aileron on the same side.
The airplane was designed to be stall and spin-proof.

harvee

(in reply to flyer495th)
       Post #: 2

RE: Aircoop twin rudder - 1/12/2005 1:38:19 AM   
hattend



Posts: 2059
Joined: 11/29/2001
From: Redding, CA, USA
Status: offline 		Bob,

Jack Stafford Models made an Ercoupe kit and it is now available again! http://www.jsmodels.com/Aircoupe.htm

I have one of the older Stafford kits and the stock kit way to activate the rudders is with a bellcrank at the center of the tail plane and then a wire going out to each rudder underneath the stab. I modified mine by using a red nyrod (flexible) out to each rudder INSIDE the stab...it's a very clean installation that way. I'll take a pic of mine tonight and post it here tomorrow.

Mine has a Super Tigre .51 in it and it could be used as a pylon racer. It's very slippery and goes pretty fast. Scale speed is done at about 1/4 throttle.

Its a fun build.

Don

Here's the picture:


< Message edited by hattend -- 1/12/2005 3:30:41 AM >

_____________________________

Revver Brother #94

(in reply to harvee)
       Post #: 3

RE: Aircoop twin rudder - 1/12/2005 11:42:37 AM   
flyer495th



Posts: 195
Joined: 10/29/2003
From: Townsend, MA, USA
Status: offline 		Hattend - thanks for the reply. I would love to see the pictures of how you did the twin rudder control.
Harvee - thanks for giving the correct information about the plane!

Bob

(in reply to hattend)
       Post #: 4

RE: Aircoop twin rudder - 1/12/2005 3:32:01 PM   
dicknadine


 

Posts: 2050
Joined: 7/17/2003
From: Greensburg, LA, USA
Status: offline 		here's my setup on my 81" Aircoupe rudders. pushrop to bellcrank in tail, exposed pushrod out to each rudder. so far its worked real good. you have to play with the throws to get the proper flying response. dick

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

dick/rcflyer

(in reply to flyer495th)
       Post #: 5

RE: Aircoop twin rudder - 1/21/2005 2:26:58 AM   
Walter D


 

Posts: 668
Joined: 10/18/2002
From: Sun City, CA, USA
Status: offline 		On my Skyfarer (this aircraft was actually made by General Aircraft back in 1941, Ercoupe competition?) I built the stabilizer with a symmetrical airfoil, thick enough to house 3 bellcranks, the one in the center, receives the pushrod from the servo and actuates the other two placed between tha last two ribs, which actuate the rudders, pushrods come out the bottom of the stab, works like a charm, vertical stabilizers are attached to the end rib of the stab (made of lite ply) by two 4/40 bolts that bolt into T nuts, bolts are threaded with Loctite, no problem. On the rear view shot the pushrod and horn can be seen.

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize

(in reply to dicknadine)
       Post #: 6

RE: Aircoop twin rudder - 1/27/2005 8:45:51 PM   
ELTIGRE


 

Posts: 418
Joined: 8/4/2004
From: BERNVILLE, PA, USA
Status: offline 		I have been given some lessons in the Aircoupe & it is pretty easy plane to steer around the sky, if a bit cramped for anyone over average build. some coupes were modified with rudder pedals(pretty small as there is not a lot of room down on the floor.

(in reply to Walter D)
       Post #: 7

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