In the "things you will need".

For the elevators you'll have several choices...

- Two normal servos, then place one servo on the elevator channel and another on a spare TX channel. Mix the two, but reverse one so both sides move up and down at the same time.

Pros: Easy to do with most 7 channel and above TX's.

Cons: Your elevators will not move uniformly. There will be a slight and noticible lag particularly at extremes.


- A JR Matchbox or a Futaba equivalent. ( NO CHEAPIES!!! This will cost you over $65.00 or more ).

Pros: You'll get EXACT sync between the two servos and surfaces. With the JR's you'll even get better end point control.

Cons: Not cheap. See next option

( The Cheapies "drift", will not sync properly ( see above point ) as only ONE signal is processed and regenerated instead of both like with the Matchbox. The crystals drift with temperature changes requiring constant adjustments of very easy to damage potentiometers that wear out quickly ).


- One normal servo, one reversed servo hooked together with a "Y" cable.

Pros: You'll get exact and identical movement of the two control surfaces. No other TX channels are required.

Cons: It's hard to find an exactly matched set of a Normal and a Reversed servo now-a-days.

I did the latter on my Funtana and the former on larger 3D planes.