How to connect 2 rudders with servo? I have servo and servo arms with me.
I have read about it in some topics & in wikibooks (http://en.wikibooks.org/wiki/RC_Airplane/Control_surfaces_and_linkages) but what can I use as control rods, and from where I may get it?
What I understand is that:
1) Servo arm should be fixed to servo.
2) Control rod should be fixed to hole of horn.
3) Rudders should be fixed with control rods.
Then servo controls the movement of control surface which controls movement of model.

Are servo arms and horns same thing?
What things will be required to connect servo with rudders & reciever? I dont have Tx-Rx set and will arrange that after sometime, till that I cant test it.

The image is from net through which I understand and not of my servo.

Option 1. connect your two rudders with two servos (Y connector and an extension) Option 2. see how bipe aileron is interlinked (Like my pitts bipe) using a control rod interlink both rudders, control one through the servo.

if you have enough channels to spare use two servos and use a taileron mixer, will give you better roll rate at high alpha and low speeds.

i can be elloborate further, if you want to

I want to use one servo only.
Where can I get control rod and how to connect it to servo arm and to one of the rudders?
The two rudders may be joined by a wooden stick which will force the second rudder to move along with the first rudder.
Maybe, it is like option 2. Can you post some pics of connection. The holes in servo arms are very small, What can be fit into that?

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Can you post some pictures of your model