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Dual servo ailerons

Old 12-20-2008, 12:10 PM
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Tyrant Blaze
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Question Dual servo ailerons

Hi Everyone,

Can someone explain to me how dual servos for ailerons work
Do you have to mix channels on the TX?

I am using a Spektrum Dx6i Tx.

Thanks in advance

Chris
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Old 12-20-2008, 12:42 PM
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Sam_K
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With dual aileron servos, each aileron has a servo of it's own, instead of both ailerons being driven by just one servo. This has a couple of advantages, the major one being that you can also use your ailerons as flaps (flapperons) or spoilers (spoilerons).

I have not used a DX6i radio before but I have the DX7. In the DX7, to use dual ailerons you just switch on the "Flapperon" mix and plug the 2nd aileron into the "gear" channel on the receiver. I recommend you look in your DX6i manual for the section on Flapperons as this will explain how to set up dual ailerons.

Hope this helps!
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Old 12-20-2008, 02:09 PM
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You can just link the two aileron servos together with a 'Y' lead if flapperons or spoilerons aren't required. No mixing is needed, just plug the 'Y' lead into the regular aileron channel on the Rx.
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Old 12-20-2008, 02:10 PM
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newjak
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You don't have to use a mix on your radio to use dual servos. Y-adapters are commonly used to plug both servos into one channel on your RX. No need for a mix.
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Old 12-20-2008, 02:11 PM
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Originally Posted by Ben D wing View Post
You can just link the two aileron servos together with a 'Y' lead if flapperons or spoilerons aren't required. No mixing is needed, just plug the 'Y' lead into the regular aileron channel on the Rx.
Ha, beat me to it!
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Old 12-20-2008, 02:31 PM
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gfdengine204
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However if you are planning on using the ailerons independently (such as flaperons or spoilerons), then a y-connector will not work and you WILL need to connect each aileron lead separately to the RX. Clear as mud, right?
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Old 12-20-2008, 02:48 PM
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Thanks guys that was really helpful.

Do you think using the ailerons as flaps on a 1 meter wing span balsa Cub would be useful or beneficial is any way
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Old 12-20-2008, 07:38 PM
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Sir Raleigh
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Also, don't forget about adding aileron differential. This is where the aileron that goes down in a turn doesn't go down as much as the up aileron goes up. In other words, the up aileron may go up 50% but the down aileron may only go down 25%. This will make your turns more coordinated and a lot smoother.
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Old 12-20-2008, 07:45 PM
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Bub Steve
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good post'in SirBub!!,The down aileron drags more and throws the tail out make'in you think the rudders out of trim,,,,BOTH WAYS HAHaaa! your bub, steve
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Old 12-20-2008, 08:14 PM
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Ben D wing
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Originally Posted by Tyrant Blaze View Post
Thanks guys that was really helpful.

Do you think using the ailerons as flaps on a 1 meter wing span balsa Cub would be useful or beneficial is any way
On a model of this size I would advise against using the ailerons as flaps because their effect would be minimal and not worth the extra effort of programming your transmitter.
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Old 12-21-2008, 04:53 PM
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Thanks very much for the advice guys, I was wondering about the differential when reading my tX manual.....yep i finaly read the manual!
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Old 12-21-2008, 04:56 PM
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Originally Posted by Sir Raleigh View Post
Also, don't forget about adding aileron differential. This is where the aileron that goes down in a turn doesn't go down as much as the up aileron goes up. In other words, the up aileron may go up 50% but the down aileron may only go down 25%. This will make your turns more coordinated and a lot smoother.

Is this 2:1 ratio (50%/25%) a standard rule of thumb or is very different from model to model
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Old 12-21-2008, 05:57 PM
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I just just used those figures to make it easier for you to visualize one aileron going up twice as far as the one going down, but it would probably be a good starting point.
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Old 12-21-2008, 10:31 PM
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"Do you think using the ailerons as flaps on a 1 meter wing span balsa Cub would be useful or beneficial is any way"

I tried this on my GWS FW190. It didn't seem to make much difference when the flaps were down, it just got a little harder to fly.
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