ORIGINAL: Pathogens

Hi all, I got a U can do 46 with a saito 82 on it and am looking for some help with some radio setup questions.
I am running a JR 9303 with an Hitec Electron 6 receiver.

>I am not familiar with your radio, however I can provide some basics
>on the setup.

Question one. I have 6 servos on the a/c but my receiver is only 6 channel. I would like to be able to hook all the servos into the receiver and then use the radios mixing functions to mix the different channels together to get it to work. Basically, I would like to have subtrims and all that good stuff aviable. So I can plug in all the servos, but what do I do with the battery. Can I Y harness the battery and servo into one channel? How is this done?

>Yes, you can "Y" harness the battery. Plug the single end into any receiver slot,
>then plug your battery in one side of the "Y" and your servo in the other side.


Secondly, If i choose to not plug all 6 servos into the receiver, I have 2 options as I see it. I could use a y harness like the book says and connect both alierons together. OR I could connect both elevator servos together with a y harness. What would be the benifit/cost of doing it either way.


>If you Y harness the ailerons, they will work as regular ailerons. You MAY
>NEED to reverse the push rod on one of the servos (put the arm on the
>other side of where it presently is) OR use a "Reversing Y connector"
>(about $15 ). If you Y harness the ailerons together you would
>just plug them into the normal aileron slot. You will not be able to use
>flaperons, which some people do like to use for 3D manuvers.
>Flaperons require that one aileron servo be plugged into the normal
>aileron slot and the other aileron servo is plugged into another slot.
>On Futaba/HiTec, this would be slot 3 and 6.
>
>Connecting both elevator servos with a Y harness is USUALLY suggested.
>Again, you will need to either reverse the push rod on one of the servos
>OR use a "Reversing Y Connector". The Y harness would be plugged into
>the regular elevator slot in the receiver.

Do people some how mix their elevators with their alierons? I would like to be able to use flaperons mix.

>I have not heard of mixing ailerons and elevator (to what purpose ?),
>but mixing of elevator and flaps/flapperons is frequently done in
>3D and for many scale planes. Be advised that if you Y harness the
>ailerons you will not be able to use flaperons. I STRONGLY SUGGEST
>that if you decide to use flaperons, take the plane AT LEAST 3 mistakes
>high and try them, especially at slow speeds. Flaperons tend to make
>the wing tips stall first. If you look at a scale plane, you will see the flaps
>are always inboard so the center of the wing will stall before the tips.
>This results in a straight ahead stall and not a wing tip suddenly dropping.
>
>Your manual can tell you how to set up the transmitter for mixing.

Maybe some one can acutally explain some of the common mixes and maybe short explanation for each, such as flaperons.

>Rudder/elevator for co-ordinated turns. Some planes, such as a Piper
>Cub, require rudder and elevator when making an aileron turn. The
>additional input of the rudder with the elevator keeps the turn smooth
>and level.
>
>Elevator/flaps or flaperons. This minimizes/prevents the plane from
>"ballooning" when the flaps are activated. It is also used in some 3D
>manuvers.

Why does the u can do manual say to use y harness on the alierons but doesn't mention anything about possibly using a y harness on the elevators.

>Scr*w up in the manual most likely.

would I want my elevators on seperate channels or would I want the alierons on different ones?

>You WANT your elevators on the same channel so that each half of the
>elevator receives the same signal. The benefits are a reduced work load
>per servo AND if one servo dies, you still have some control over the plane
>and can possibly get it down in one piece.
>
>The ailerons on separate channels is primarily to allow for flaperons and/or
>more precise aileron control - less slop due to less linkages.
>The load on aileron servos is usually not as great as elevator or rudder so
>redundency is normally not an issue.

benifits of each?

Thanks in advance.

ORIGINAL: Pathogens

"Yes, you can "Y" harness the battery. Plug the single end into any receiver slot,
>then plug your battery in one side of the "Y" and your servo in the other side."


I have heard conflicting stories on this. Would the servo not be directly powered by the battery then and always stay on as long as the battery was connected?

"You WANT your elevators on the same channel so that each half of the
>elevator receives the same signal. The benefits are a reduced work load
>per servo AND if one servo dies, you still have some control over the plane
>and can possibly get it down in one piece. "

The U can do does not have a single piece elevator but 2 seperate elevators controlled with 2 different servos... You said that I will need to reverse the servo hornson of the elevators servos to get it to work in the proper direction, right?