Radio interfernce
08-31-2008, 07:33 PM
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Radio interfernce
OK i have a 33% extra 330s with 95cc gas.
my prob is with the plane not running every thing works fine.
Then when i start it my left AIL jumps up and down even more if i rev the motor, rutter moves also.
i thought it might be my receiver, so i bought a new scan select JR PCM 770 rec.
still have same problem if anyone can help please i wanna fly my plane
im useing a JR 6102 radio
my prob is with the plane not running every thing works fine.
Then when i start it my left AIL jumps up and down even more if i rev the motor, rutter moves also.
i thought it might be my receiver, so i bought a new scan select JR PCM 770 rec.
still have same problem if anyone can help please i wanna fly my plane
im useing a JR 6102 radio
08-31-2008, 07:45 PM
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RE: Radio interfernce
There is a couple things to check, What materiel did you use for throttle linage, How close is your receiver to the engine electronics and batteries, what type of ignition, Shielded or non shielded, If non shielded do have a R plug in the engine.
Milton
Milton
08-31-2008, 08:11 PM
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RE: Radio interfernce
look for metal to metal contact on the throttle linkage. Like mentioned above the ignition electronics and igination battery need to be seperated from the RX electronics.
09-01-2008, 09:29 PM
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RE: Radio interfernce
I am useing a reverser on the elevator
my throttle is metal but my conectors are plastic.
and a Y-harnes on ails.
Do i need to change radio or different reciver?
my throttle is metal but my conectors are plastic.
and a Y-harnes on ails.
Do i need to change radio or different reciver?
09-01-2008, 09:58 PM
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RE: Radio interfernce
Try unplugging the throttle servo from the receiver and work it by hand to see if that stops it, if so you know where to start and solve your problem.
Milton
Milton
09-01-2008, 10:34 PM
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RE: Radio interfernce
If you have a metal cap on the sparkplug, try puting a narrow hose clamp around the base. I had one that was loose just a tiny bit and caused all kinds of problems. The metal can vibrate against the spark plug and cause lots of problems for the receiver.
09-02-2008, 08:19 AM
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RE: Radio interfernce
I have tried everything yall have told me and still the same.
What if i went to 2.4 radio?
allso i want to think all for helping me.
I bought this plane from a friend and it worked fine for him.
What if i went to 2.4 radio?
allso i want to think all for helping me.
I bought this plane from a friend and it worked fine for him.
09-02-2008, 08:40 AM
#13
RE: Radio interfernce
Though going to 2.4 would more than likely work it would simply be masking the problem which could come back and bite you. Ideally you should fix the problem and then decide if you want to make a change.
Karol
Karol
09-02-2008, 09:39 AM
#14
RE: Radio interfernce
2.4 will only mask the problem as stated above.
Ensure the ignition module is at least 12" away from the Rx and has been stated before no metal too metal contact anywhere.
Cheap Y leads have been known to cause this type of problem in the past, if you can get rid of them and use seperate inputs for each servo, if your Tx can do this, what Tx do you have?
Mike
Ensure the ignition module is at least 12" away from the Rx and has been stated before no metal too metal contact anywhere.
Cheap Y leads have been known to cause this type of problem in the past, if you can get rid of them and use seperate inputs for each servo, if your Tx can do this, what Tx do you have?
Mike
09-02-2008, 03:16 PM
#16
RE: Radio interfernce
I used a cheapie Y harness once to to connect two aileron servos and had difficulty in finding out that it was the problem. Replaced it with a better quality unit and the problem went away.
Karol
Karol
09-05-2008, 09:10 PM
#19
RE: Radio interfernce
ORIGINAL: BaldEagel
2.4 will only mask the problem as stated above.
Ensure the ignition module is at least 12" away from the Rx and has been stated before no metal too metal contact anywhere.
Cheap Y leads have been known to cause this type of problem in the past, if you can get rid of them and use seperate inputs for each servo, if your Tx can do this, what Tx do you have?
Mike
2.4 will only mask the problem as stated above.
Ensure the ignition module is at least 12" away from the Rx and has been stated before no metal too metal contact anywhere.
Cheap Y leads have been known to cause this type of problem in the past, if you can get rid of them and use seperate inputs for each servo, if your Tx can do this, what Tx do you have?
Mike
09-06-2008, 10:49 AM
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RE: Radio interfernce
A Y harness is nothing more than a parallel connection. Using separate wires from the receiver simply moves the parallel connection back inside the receiver. If the Y harness has good connectors and is well made there should be no reason not to use them.
As for 2.4 masking the interference. That's what you want isn't it? 2.4GHS is less suseptible to interference because the shielding on the ignition is much more effective at that frequency than it is for 72 or 35 MHZ. Thats not the same as PCM. PCM separates the signal from the noise by code recognition. That makes it better than PPM but still not as good as 2.4GHZ. PCM picks the signal out of the ignition noise, 2.4 prevents the ignition noise from getting there.
As for 2.4 masking the interference. That's what you want isn't it? 2.4GHS is less suseptible to interference because the shielding on the ignition is much more effective at that frequency than it is for 72 or 35 MHZ. Thats not the same as PCM. PCM separates the signal from the noise by code recognition. That makes it better than PPM but still not as good as 2.4GHZ. PCM picks the signal out of the ignition noise, 2.4 prevents the ignition noise from getting there.
09-06-2008, 10:58 PM
#21
RE: Radio interfernce
ORIGINAL: dirtybird
A Y harness is nothing more than a parallel connection. Using separate wires from the receiver simply moves the parallel connection back inside the receiver. If the Y harness has good connectors and is well made there should be no reason not to use them.
As for 2.4 masking the interference. That's what you want isn't it? 2.4GHS is less suseptible to interference because the shielding on the ignition is much more effective at that frequency than it is for 72 or 35 MHZ. Thats not the same as PCM. PCM separates the signal from the noise by code recognition. That makes it better than PPM but still not as good as 2.4GHZ. PCM picks the signal out of the ignition noise, 2.4 prevents the ignition noise from getting there.
A Y harness is nothing more than a parallel connection. Using separate wires from the receiver simply moves the parallel connection back inside the receiver. If the Y harness has good connectors and is well made there should be no reason not to use them.
As for 2.4 masking the interference. That's what you want isn't it? 2.4GHS is less suseptible to interference because the shielding on the ignition is much more effective at that frequency than it is for 72 or 35 MHZ. Thats not the same as PCM. PCM separates the signal from the noise by code recognition. That makes it better than PPM but still not as good as 2.4GHZ. PCM picks the signal out of the ignition noise, 2.4 prevents the ignition noise from getting there.
09-08-2008, 08:03 AM
#22
RE: Radio interfernce
ORIGINAL: Rogkx250
ok i just bought a spectrum 2.4 and still same but i am useing a Y-harness and reverser on ail and rutter.
ok i just bought a spectrum 2.4 and still same but i am useing a Y-harness and reverser on ail and rutter.
Mike
