billberry189

My Feedback: (1)

When a servo is reversed on a Futaba radio, where does the reversing actually take place; inthe servo, in the receiver,in the transmitter, or a combination of them?

TedMo

Is that important?

mgauthier711

The servo reversing function happens entirely in the transmitter.

billberry189

My Feedback: (1)

The reason for the question is that after installing my rudder servo and steering servo in my TF P-47 I discovered that they operate in opposing directions when connected to the receiver with a Y-harness,that is to say that the rudder and tail wheel work opposite to each other(the servos operate in the same direction). I was hoping I could reverse one of the servos to correct the problem. Apparently that isn't going to happen, so is there a way to mix the two servos on seperate channels so that I can reverse just one of them.

JollyPopper

My Feedback: (6)

It sounds like you're using serparate servos for the rudder and nosewheel. Is there a reason you can't use just one servo to operate both? If for some reason you are forced to use two servos, use a reversing y connector to solve your problem.

billberry189

My Feedback: (1)

Yes Jollypopper, I am using seperate servos for the rudder(which is push rod driven) and the tail wheel(which is pull-pull cable driven). I have never heard of a servo reversing Y-harness. Who makes such an animal?

rlipsett

programmable hi tec servos can be reversed in the servo. different servo manufactureers have different directions of rotation

piperfloatflyer

My Feedback: (1)

Move the servo arm to the opposite side of the serco on the rudder... if things will line up.

Glacier Girl

My Feedback: (4)

Yep like lern2fly said just swap the servo arm on the rudder.

If you don't have room to do so you can set up the two servos on an always on mix on two different channels, if your tx has the capabilities and your rx has an open socket.

Gray Beard

My Feedback: (-1)

If you don't haqve a radio that can do it or you can't reverse the linkage then you can buy a servo reverser or a servero reversing Y. I'm setting up a plane with a VERY old 7 ch radio and I installed two elevator sorvos thinking the fellow I'm building the plane for had the same radio as I do. WRONG. There were no reversing Ys at the hobby shop so I bought just the reverser and used a standard Y. It worked, I don't like Ys but in some cases you haven't any choice how you do things.

billberry189

My Feedback: (1)

Unfortunately the layout won't allow me to swap the servo arm.

JollyPopper

My Feedback: (6)

Is there any possibility of you posting pictures of the servo bay with rods attached? Maybe if we could see the setup somebody might have a quick cure other than the ones already offered.

RDonovan

Replace one of your Futaba servos with a similar sized Hi-Tec servo. Hi-Tec and Futaba servos rotate in opposite directions given the same input. Richard

Rodney

What Rdonavan said, different brands of servos often operate in different directions with the same input.

billberry189

My Feedback: (1)

Thanks for all the input. As it turns out, last night when I was preparing to take some pictures of my servo installation, I realized that I had enough room to move the rudder servo over so that the servo arm would rotate from the other side of the servo; thus correcting my problem. Thanks again!

FlyingPilgrim

My Feedback: (26)

For any others that have a need to reverse a servos rotation, you should be able to change wiring inside the servo. You will need to be able to solder. I believe all you need to do is swap the two outer wires on the potentiometer and swap the two wires driving the servo motor. If memory serves right, I think you can also order a reversed servo from Servo City (might be worth a phone call).

mike31

My Feedback: (67)

Cross the pull pull wires. Job done!

Doomking

My Feedback: (38)

Very easy fix if you know how to solder.
Search "servo reversing" on you tube and watch the video.

It took a dummy like me 5 minutes to reverse the wiring.

JollyPopper

My Feedback: (6)

I like RDonovan's idea. I have interchanged Futaba and Hitec servos for years and never realized they operated in opposite directions with the same input. I just reversed direction in the transmitter if they were wrong. Now I'll have to try and see if I can remember that little tidbit of information for more than 37 minutes or so.

lopflyers

My Feedback: (12)

I had the same problem and a reversing Y from Maxx was $20 and solve it.
Others suggested a matchbox ($70) or using mixing on two different channels

TedMo

This is true as is Futaba and JR/Spectrum opposite rotation.