Sharksj

Hi. I have a 72Mhz Radio and a 6 channel reciever. It says I can plug the right aileron to the #1 input and the left aileron to the #6 input. Only the right one moves when I do that. So I baught a Y Harness, now they both move in the same direction. How do I fiz that? Please help.
Thank you very much

Jetdesign

My Feedback: (8)

To fix the problem with your radio not controlling both channels, you have to turn on the 'flaperon' feature assuming it's a 6+ channel computer radio.

To fix the problem with the Y harness, you have to run the linkage on one of the servo/control horns to the opposite side of the servo.

jetmech05

since the Y harness is hooked up already....make sure the servos are mounted correctly..in other words if they are on their sides they either face each other or away from each other....the servo arms face down.....if the servos are mounted flat....the servo arms need to face each other or away from each other....
as gaRCfield said it's a programming issue with the radio on seperate channels

Jester241

Yeah,what they said. And just if your curious....putting one servo into channel 1 and the other into channel 6 is what you would have to do if you wanted to use flaperons or spoilerons and stuff like that among other things. You probably arent getting into that more advanced stuff yet though. Usually the planes manual will tell you all about that stuff. And doing that also required a computer radio and you have to "mixing" and stuff which can get complicated. Otherwise,the Y-harness route is the easy way.

Sharksj

Thank you everyone I got it!

Gray Beard

My Feedback: (-1)

Most people have heard me rant about the Ys and how much I don't like them. Well, truth is I have been known to use more them one at one time or another. Something I didn't see mentioned is the reversing Y harness. Yes, I don't like them either but in a pinch they work but like Joe mentioned, depending on how your servos are mounted you just reverse the side the linkage is on. The radio is the better way but you know, sometimes a Y just makes sense. WHO SAID THAT???? Not me!!!!

jetmech05

the aircraft I'm almost finished with is a Nitro planes Bobcat pusher prop jet..dual rudders and a seperate servo for nose wheel steerring...out of the receiver with a y one leg to the steering servo...one leg to another y which then goes to the rudder servos.....oh then just to show you that convental wisdow is not always correct...with the antenna from the receiver down the inside of the fuselage, cross over to the other side of the fuselage and back to the nose.....the antenna does not cross over itself...range check was done with the tail of the aircraft towards me...walked a good 150 ft with the transmitter antenna down before I got an uncommanded control surface movement..raised the transmitter antenna the twitching stopped....
Good flying to ya

opjose

I didn't get what you were referring to in your statement about "conventional wisdom".

Where is conventional wisdom wrong?

w8ye

My Feedback: (16)

Sometimes you have to go to the school of hard knocks and learn through making mistakes.

jetmech05

convental wisdom is that the receiver antenna is supposied to be stretched out straight.....at least that's what I was lead to believe...

dignlivn

Great subject for this question,


Why does the discription of this item, say
This does NOT "Y" ?????

http://www3.towerhobbies.com/cgi-bin...&I=LXH451&P=SM


I'm using 2 of them currently with no problems.

Bob

bruce88123

It's a technicality. It's not a true "Y" because there is no physical separation between the points where the 2 servos plug in. More like a "combiner" or "junction" with a short extension.

dignlivn

Thanks Bruce,


That is what I thought too, just wanted
someone elses opinion.

Bob

w8ye

My Feedback: (16)

According to them A "Y" can go out in two directions possibly 6" or more in each direction

This one you can plug two servos into it and from there go in two directions but the two frmale plugs in this one are one on top of the other.

It can be used as a "Y" though

dignlivn

w8ye,


That's what i'm doing with them. One is for the ailerons,
one for my tail wheel servo off of the rudder channel.

Bob

w8ye

My Feedback: (16)

Sounds good

bruce88123

I have used this on a dual aileron servo system before too and it works quite well.

opjose

Oh, ok...

I've not seen people espousing that here ( or not very loudly, heh... ).

Curled, curved, and folded antenna elements are used all the time w/o problems and in many cases w/o significant reductions in db's.

I will regularly pass the antennas down a tube, through the fuselage, and if the fuse is not long enough for the full length ( particularly on smaller .40-.60 planes ) I bring what remains out and run it along striping, so you cannot even see it.

This puts 90 degree bends in the antenna.

As long as the antenna does not effectively cross over itself, and ideally nor cross over or closely to other wires in the plane, it works fine w/o no range reduction.

Base loaded antennas are used all the time in RC, where the wire is coiled to reduce the antenna length, or a choke coil is used to keep the effective "electronic" length of the antenna equivalent to a much longer one.

Choke coils may introduce some signal degredation, but not so much that it is deemed problematic.