Hello,

I am going to be building a bigger airplane and I want to use multiple channels for my (2) elevators and (2) ailerons. I have a 6 channel jr sx600 transmitter and a rs700 slimline receiver. I want to have the two channels on the elevators for redundency and power, and the same goes for the ailerons. Does anybody know how to set this up or have a link to a thread where I counld find how to do this? Or is this even possible? Thanks in advance.

Shannon

hey Spitfire.....I grew up just north of you in St. Joe, as a matter of fact I worked at KCI for 8 years before going east.....
To answer your question yes it can be done....if you could tell us more details we could help.....engine size, transmitter and receiver,....

Hello jetmech, thanks for the response. I moved to KC (liberty mo) in june of last year and we love it hear. I hope everything is good for you back East. I just bought the airplane I have always wanted, a Great Planes 1/3 Pitts special and I am wanting to use JR821 servos with a JR SX600 transmitter and slimline R700 receiver. I want to have dual elevators and 2 channels for left and right ailerons. I am going to be using a gas engine, something like a zenoah G45. If I have a channel left I would like smoke. Thanks for the help and I am very open for suggestions. Thanks guys and Please help!

I can't believe you haven't gotten more responses by now.

I don't have a JR radio but I have used Futaba and Airtronics, so I would guess that the dual ailerons will be setup using a feature called 'flaperon' or something like that. You will use the regular aileron channel for one side, and maybe channel 6 for the other. For dual elevators, I doubt you have that specific feature in a 6ch radio. If you don't, it would be done by using one of your mixes and slaving your empty channel to your elevator. Hopefully you have a centering option on that channel as well as end point adjustments, and these are how you get the two servos 'synched' together.

Of course there is the option of using a Y-harness, but if you can do it with the radio you're much better off.

I tried finding a manual for your radio online without success. I would suggest looking at the instructions for the Spektrum DX6i as Spektrum is made by JR. Chances are the aileron channels will be the same, etc.

Good luck, I hope this helps.

Try this link for your manual. http://www.google.com/search?sourcei...r+sx600+manual

http://www.horizonhobby.com/ProdInfo...600_manual.pdf

Setting up dual ailerons is in 'wing type' on page 26. It doesn't look like the radio has mixing capabilities, so you will have to do dual elevators with a Y-harness. Depending on the setup it may be tricky (i.e. having one servo work in reverse?).

If this isn't your first gasser forgive me.....now you will see why I asked you about the engine....for safety sake please use an optic kill switch with your gas engine.....there will be no direct electrical connection between the ignition and the airplane, plus if you loose system power the engine will shut off.....and it is a way to manually shut off the engine.....Y ailerons and use the open channel for a choke servo....you'll be glad you did.....good flyin to ya
Oh by the way my Mom's back yard boarders I-29 just past the Faron Rd. overpass in St. Joe.

Thanks everyone for your help. I have read the manual, but I still had questions on the setup. Thanks for the input. Just to clarify, I am not wanting a split elevator, I just want to have two servos to the elevator that way if one would fail, I have one more there to still land the airplane. I think a y-harness may be the best thing to do for that, but I was talking with a guy that I didn't totally understand what he was saying. I will want two channels for the ailerons, but do I really need two for the elevator if I do not have a spit elevator?

weight is your enemy...I have only had 1 servo fail on me in flight, and it was a standard plastic gear servo, gears stripped....get a metal gear servo that packs enough torque for your gasser...and only use 1 since your elevators aren't split..save the weight.....if a servo is going to fail it could just as easy be your rudder servo causing a hard over rudder...you won't save it from that.....If it was me I'd Y the ailerons and save the channels...
Good luck

So you would use a y-harness to connect 4 ailerons to 1 channel? I have thought about this quite a bit and the only reason I want to use 2 channels is so I can maintain symmetry and have adjustments to each set of ailerons. If 4 to 1 is safe I will have no problem doing it, I am just looking for advice and rules of thumb with these bigger planes. Thanks.

Oh sorry I forgot you're doing a Pitts....I have a Pitts Python...I cant remember if I Y'ed the 2 lefts together and the 2 rights together or if I Y'ed the tops together and the bottoms together...I'm pretty sure I did the top to the top and bottom etc. in that case use 2 channels or you can get a servo matcher....a servo matcher is just another item to fail.....
Have you given any thought to the optic kill switch? or and the choke servo.....A friend of mine was almost killed by a gasser that didn't have the kill switch.....

Would this work for a good kill switch? I haven't been able to find an optic kill swithc and ran a search on towerhobbies and this is what I found? I understand your concern about the switch and yes I will do whatever is recommended. Thanks for your concern. Let me know if this switch will satisfy the need.

http://www3.towerhobbies.com/cgi-bin...&I=LXJ776&P=ML

If I have this right, I think you will need two Y's. One Y harness would go to both right ail. servos and plug into the
Ail slot on the RX . then use the other y harness for the two left servo's and plug into one of the extra channels. Might have to be flaps, is you have that channel.

On my JR x9303 I will turn on flaperon in the wing section. I have to reverse one of the servos for one of the channels to get the aileron function. With out the servo reverse you have flaperons.

Thats one way to do it. there may be another . and thats on my radio not sure on yours.

sticks

I went and looked at your manual and I think you can do it my way. Here is the part that tells about wing type and selection flaperons and even says you have servo reversing and that should give you what you want.

My son is in KC and very close to Liberty. been there for a few years. We are going down to see him in a couple of weeks.

Get back and let up know how you come out.

sticks

ss the Increase or
Decrease button to turn the flaperon
(FPR), Delta (DLT) or
V-tail (VTL) mixing on or off.
OF = OFF
ON = ON
INDICATES WING TYPE FUNCTION
FPR = FLAPERON
VTL = V-TAIL
DLT = DELTA
WING = WING TYPE SELECTION
MIX
OF
ACCESSING THE WING TYPE SELECTION FUNCTION
1. Press the Scroll and Increase buttons up
simultaneously and hold.
2. Turn on the transmitter to enter the
System mode.
3. Press the Scroll button until the “MIX WNG�
appears on the screen.
4. Press the Channel button to select either
the wing type (WNG) or V-tail (VTL) mode.
5. Press the Scroll button to access the
modelname function.
6. To exit, press the Scroll and Increase
buttons up simultaneously.
Flaperon, V-tail, and Delta mixing are available
for specialty aircraft that require those
functions. The flaperon feature mixes flaps
with ailerons so the ailerons can be drooped
for takeoffs and landings while still functioning
fully as ailerons. V-tail mixing combines rudder
and elevator for V-tail operations. The Delta
wing function allows the aileron to also act
as the elevator, while retaining independent
use of both functions. The Delta wing function
allows the ailerons to also act as the elevator,
while retaining independent use of both
functions.

Flaperon Setup
When using flaperon mixing, two servos (one
for each aileron) must be used. Connect the
left aileron servo to channel #6 (Flp/Aux 1) and
the right aileron servo to channel #2 (Aile) in
the receiver. Individual functions (e.g., servo
reversing, sub-trims, etc.) are still available
for each of the channels. Use sub-trims for
individual neutral adjustment.
Note: When flaperon is selected, it is
necessary to reduce the travel adjust
values of channel #6 0% in each direction
to prevent servo over-travel (binding).
Please refer to section 7.3 for travel adjust

This is more of the manuel and tells more about it. I may have copyed the wrong second before.

sticks

to answer your question about the kill switch....No that is not what I had in mind.....you can google some of the large scale hobby shops....Like Don's in Salina KS or Dawg House, or Valley View.....You're going to find that with large scale airplanes Tower is lacking.....
An optic Kill switch will not have a direct electrical connection from the ignition to the aircraft's system it will use a short stretch of fiber optics.....and will kill the engine in case of a power failure......
Call Don's or you lucky dog drive over to Salina and see these folks...all the hobby shops I told you about will be more than happy to answer any questions you may have..and all are very nice people
good luck