In an earlier post it was suggested that it may not be acceptable to use servos to control a scale models elevation.  I have done a little research and found that this is not true.  Following are the AMA rules:

AMA Control Line Rules

Section 2. General.

A control line model is flown on one or more steel wire line(s) or metal line(s) of equivalent strength, attached to the model in a manner providing aerodynamic control of the model's elevation through the manipulation of the control surfaces during flight.  Such manipulation of control surfaces, and any other of the model's operational features, may be accomplished by mechanical means, by electrical impulses transmitted through the line(s), or by any other control system that does not interfere with the control of any other model or present a safety hazard to competitors or spectators.  The use of radio control to accomplish any control function on control line models is specifically prohibited.

If I read this correct it would be acceptable to build a control handle that has a joy stick to control the elevator. By sinding the resulting control signal down the wire(s) a decoder in the airplane would controlls the elevator/flap servos.  The control lines(s) would be little more than a theater to force the aircraft in a circle. The advantage of such a system is that if the lines go slack you still would have control of the model.

I guess it is the engineer in me but I am considering such a system.  Any thoughts on the subject? 

PS I have not looked at FIA - this is the AMA rules.

In FAI rule 6.2.2 par b) Primary Control Function:
               The model aricraft's flight path may ony be controlled by a manually activated and mechanically linked flight control elements. This must be by a hand-held control handle manipulated by the pilot located on the ground at the center of the model aircraft's flight circle. No automatic control of the Primary Control Function shall be permitted.

That means the elevator must be controled by you using a belcrank and a handle.

John
There is nothing wrong with electronic control of th elevator.  I have not tried it but see no apparent problems. 

I have looked at the photo you attached and it might be an optical illusion but it appears that you do not have right aileron cranked in.  In fact (the shadows may be misleading) but it looks like a touch of left aileron. 

Clancy

John, do you have a photo of your handle? I am curious how you work each of the control joysticks.
Chuck

All,

Eindecker crash photo attached, Ty Marcucci on left, John Rist (me) to the right, Eindecker in the pile.