Looking for some help on how to wire dual elevator servo's. I am using JR 8103 and they are in a GP Patty Wagstaff. Thanks

Joe, this is part of some info that Danny was emailing out a while back. I bet he would be glad to send you the whole thing if you asked.....
Ed M.

Dual Elevator Servo Set-Up

Now we will set up the elevators, so that we will have channels 3 and 7 working together. You will plug the right elevator into channel 3, and the left elevator into channel 7. Press the up key till you get to mix 5 or 6. We will use 5 or 6, as they are including mixes, meaning the elevator trim lever will operate both channels. If you do this mix on any other mix, the elevator trim will not work the second channel. Press the + key and change the first channel until it says elev. Press the channel key over to the second channel. Press the – key to change the second channel to SPOI. Make sure that beside SW: it says ON. If not, press the select key till the arrow points at SW, and press the + key to make this say ON. Press the select key till the arrow points at Rate: and make the percentage 100% by pressing the + key. Then move the elevator stick, and the arrow will move to the 0% in one direction of movement. Make this 100% also with the + key. Now we have the elevator working on both channels, but the aux 2 knob will operate the second channel. To eliminate this, will use another mix. For this mix, I would use mix 3. Press the DN key to get to this mix. Once at the mix, press the + key till it says SPOI for the first channel. Press the channel key so that the second channel is underlined. Press the + key and make the second channel is SPOI. Then press the select key till the arrow points at Rate. Press the – key till it says -100%. Then rotate the aux 2 knob, which is on the top left hand side. Rotate this until the points at the 0%. Press the – key till it says –100% also. This completes the set up of the elevators.

I had the same question, when it came to my Aeroworks Edge 540 (90 size) I'm building. At first I did something really stupid, I figured if I reverse the positive and negative wires from the servo, the motor would move in the opposite direction. WRONG, I saw smoke and my brand new servo was fried. Then had each control arm facing opposite directions (one facing up and the other facing down) on my two servos. Went to the hobby shop and asked how some of the guys reverse there servos. He said !QUOT!you need a Y adapter reverser!QUOT!. The one I got is made by Maxx Products, mine was $17.50. It has a small circuit board with a fine adjustment for one side to synchronize both sides.

I hope this will help you. What ever you do don't reverse any wires.

Thanks, I am going to try it. Would a JR770 reciever work or do I need a 8 channel?

Joe since the 770 is a 7 channel receiver it will work fine. I have 3 planes set up that way using 700's (PPM version). You may have found it by now but in a radio subsection JR has a manufacturers rep section for questions. There are a lot of things that I have found an easy way to handle on the 8103 from this section. Besides its fun to pay lets try and stump Danny (the rep).

aileron61, the nice thing about using 2 channels on the radio is the ability to match the end points and the fact that the setting will not drift as it tends to do with some servo reversers.

Ed M.

I use the Maxx reversing Y too and it works fine. I have had no trouble at all. Good luck!

I wont say what brand, but I have had two Y-reversers go bad. The first one was crap from day one. The second one lasted about 20 flights. Then the trim on the left half of the elevator would change in flight. Not fun at all. The radio I was using wouldn't mix the two servos together. Since yours will thats the way to go.
Later David

Thanks daveopam for the warning, this is the first time I bought a Y-reverser.