Help! ailerons gone crazy!
 

Hi,
I went out to my flying field yesterday with my Hangar 9 Extra Easy trainer. I was sure that I was ready to fly and everything was set up properly and the batteries were fully charged. I turned on my JR421 72mhz ch36 radio and then the plane's JR R600 receiver. When I checked the controls, the throtle, elevator and rudder worked fine. When I tried the ailerons I moved the stick to the right and the right aileron moved up, when I moved to neutral both ailerons began to cycle up and down on their own for about 4-5 seconds! I turned everthing off and then back on and the ailerons were showing eratic movements on their own. The single servo controling the ailerons is a JR 537. I am not sure of what the cause of this problem is. After I returned home I changed the servo and cannot duplicate the problem. I wonder if I have a receiver or radio problem. My flying field is very close to a medical building and I wonder if it was caused by interference.

RE: Help! ailerons gone crazy!
 

Sometimes the contacts in the servo plugs will get a little bit of corrosion on them. I've had good luck just plugging and unplugging them fully several times to clean it off.

Can't hurt to try.....

:)

RE: Help! ailerons gone crazy!
 

Were you flying with a 6.0 v Rx battery? When I fly with mine freshly charged, it does that. Also, you may want to get a few feet from the plane and see if it settles down. I think that if you are very close (couple of feet), the Receiver can become saturated and respond erraticly. Hopefully this helps.
Curtis

RE: Help! ailerons gone crazy!
 

Most probably what Just Erick said, dirty or corroded contact(s) or (if using Y connector) a bad solder joint in the Y.

RE: Help! ailerons gone crazy!
 

Thanks Curtis,
I am using a 4.8v battery but I used a Hobbico triple deep cycle charger on it for the first time and it was reading 5.4volts. I was also within two feet with the antenae extended. I will try your suggestion.
Richard

RE: Help! ailerons gone crazy!
 

If you were this close to the plane then this is quite likely your problem. When a transmitter is this close to the receiver it can actually overpower the receiver and cause problems exactly like you are experiencing. Do a proper range check on the plane and see if the problem persists.

Ken

RE: Help! ailerons gone crazy!
 

I have had and seen servos go nuts with everything mentioned, mostly it's my JR servos jitter with a hot charge. Analog, not digitals. I have also had my servos act funny when I was too close to a chain link fence. Just something else to think about.

RE: Help! ailerons gone crazy!
 

I agree, too close. May not fix problem but not helping either.

RE: Help! ailerons gone crazy!
 

Ret. Electronic Tech. for over 25 years one of the BEST things we used to clean Pot's/ Switches/jacks/plugs/Etc. is WD-40

RE: Help! ailerons gone crazy!
 

Why not electriclean contact cleaner? I have always shied away from using wd-40 for electrical parts. From my experiences it absorbs moisture after awhile.

RE: Help! ailerons gone crazy!
 

None of the proffessional cleaners work as well or as long I've had many recalles using them, working on military Eqp. I
had access to every cleaner, nothing lasted as long as WD-40, safe for all electronic components and drives out moisture. Also many spray cleaners
use a lot of pressure and dischard very cold this can damage electronics, the cold can also permanently change the oscillating frequency of crystals. (I don't know if WD-40 will damage wood) recommend remove electronics before use.

RE: Help! ailerons gone crazy!
 

WD-40

The WD stands for Water Displacer.

Jack

RE: Help! ailerons gone crazy!
 

I undertsand what wd 40 is supposed to do but from my experiences with it it does not live up to those standards. Spray down a bare metal autobody part with wd-40 and set it outside for a day or two. Just the moisture from the morning dew causes surface rust. When rodding my 30 model a sedan that was the problem I ran into. So I started using an oil soaked rag. I know it is not the same as an electrical part but still the moisture was not displaced. That is an extreme test. I have had body parts flashrusted inside the shop when I walked in the next day to continue work, just from the moisture in the air. Sorry to get off of the subject.

RE: Help! ailerons gone crazy!
 

I had something similar to this happen with a JR quattro system that i used. Only difference was all servos would do it. I changed recievers (used a friends reciever and radio) and i never had a problem. The LHS tested a new reciever, and the problem never happened again, till about 6 flights later, and I lost my plane. If i were you, i would get the reciever tested, and not use the servo again. Its not worth losing an entire plane.