DWayner
Posts: 14
Joined: 7/20/2006
From: Wichita,
KS, USA
Status: offline
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Hello ZoomZoom,
quote:
Thats interesting DWayner. I've just dealt with a RX issue thats very similar in a plane I had just maidened. I don't think it was interference though, but an issue with the RX. I had issues with this reciever in another plane previous to this one, (sudden elevetor jerks etc.) and thought it was my TX .
It will almost *always* be your receiver. The Transmitter will only fail if loss of power, or incorrect transmitting data. This is extremely rare...
Your receiver is the most important device on your airplane. It *must* be able to distinguish between a transmitter signal. Not only that, if another signal (that is not the correct transmitter) happens to be captured by the receiver (whether it is a harmonic of another frequency, the same frequency of another transmittter, your receiver must be able to react accordingly.
FM works great, because it has the inhereted grace of receiving the strongest signal. AM does not have this ability. Most folks *think* that FM means more "Quite". This is a "somewhat" false saying. What people do not realize, is FM takes the strongest signal over the weakest. AM does not. *and* FM signals are usually transmitted in the higher frequencies because of bandwidth. The higher the frequency, the less noise you have. One can think of it like your car radio... at night time, tune in on a AM station... then switch to FM. The FM stations are at least 98 times higher frequency.
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Sent the TX into Futaba for testing, came back clean. So I figured it was nothing serious,
Yep.... I should have. the very last thing to check. A very GOOD way to check a transmitter, is to put that antennta down do your walkaway, and SQUEEZE the transmitter. (it doesn't take much) If you loose control (or it starts glitching), then you know it is the transmitter.
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Not much trim is needed really but I'm tweaking the ailerons just a click or two, when the plane starts to climb nose up. I didn't do this! So I try to correct- No response, plane slowly rolls onto its back, enters tail spin nose down and spirals in. None of my control inputs affecting it in the least. I hit various things on the way down to see if I had any effect. No flight controls worked! but I did chop the throttle right before impact.
Ouch, sorry to hear about that. I hate it when I see airplanes go in. One other thing to check, is DISTANCE. I have seen airplanes fly very close ok, but when they get out there, they start glitching... the cause???? BROKEN ANTENNA! And this will NOT show up on range check very easily...sometimes not at all!
Another thing to remember, is some folks have a throttle killer, so that when a signal is not received properly, it kills the engine. This will sometimes interfere with the receiver...I have seen this only one time in my life, but I have not forgotten it. How it interfered, I am not sure. Since it did not have a "Crystal" to generate a frequency, the only thing I could conclude, is improper grounding on the IC Chip...thus a fluke of a accident.
Dwayne
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RE: Albatros D.III Build along - 
