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Ace Hobby . Esprit Model . Thunder Power RC

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Radio - Servo - Gyro - Gov - Batt > radio glitch HELP!
 
 
sluggo
Elite Veteran
Location: Kitchener Ont

Hi all well I am having trouble with what I think is a radio glitch! now this is where it gets weird, I can fly all day upright looping and rolling and flipping but soon as I hover inverted the throttle goes to idle. I have the fail safe set to hold all channels but the throttle is set to go to idle. Today in the cold Brrrr I hovered in normal mode and idle up for a whole tank and nothing! as soon as I flipped it and hovered inverted the throttle went to idle. I have checked everything on the heli, bearings, shafts and anything else that may cause rf. I took the heli to Steve Gray and he looked it over and could not find anything. Any help would great! oh ya it was fine before my last crash which was not that bad and there was only the usual damage. Please help!

Chris
10-27-2001 Over year old.
HOMEPAGE  
 
 
sluggo
Elite Veteran
Location: Kitchener Ont

Hey all thanks for all the info hehehe! Well I think I may have found the problem. Well at the hobby shop I noticed that the tail hub shaft was very loose on the output shaft. Do you think this could have been causing the glitch?I will be going out tomorrow to try it out wish me luck !

Chris
10-27-2001 Over year old.
HOMEPAGE  
 
 
Augusto
rrAdvertiser
Location: San Diego, CA

That doesn't sound like a glitch. It sounds more like a fuel issue such as a lose clunk.

Avant Aurora Ultimate
10-28-2001 Over year old.
 
 
Steve Campbell
Elite Veteran
Location: Baton Rouge, LA

If it is a radio problem, it will be buried in the circuitry of the rx somewhere and a cursory inspection will never find it. It's always a good idea to have a rx checked out by a technician with proper test equipment after a crash.

But I tend to agree with ColeopTer; this sounds like a fuel delivery problem, Chris. Pinched fuel line, snagging clunk, etc. The crash could have also bumped the spraybar into a different attitude. I know, that's stretching pretty far, but stranger things have happened with these critters.

While the loose t/r shaft could be loading a bearing enough to cause rf interference while inverted, the fact that you got the ship back over upright says that you did NOT suffer a lock-out. As far as I know, PCM lock-outs are like being pregnant- either you is, or you ain't. It is not channel-selective- when it occurs, everything freezes.

This is a real puzzler; let us know what you find.

Steve
10-28-2001 Over year old.
 
 
sluggo
Elite Veteran
Location: Kitchener Ont

YA BABY !

Well I am back in buisness! It seems it may have been a fuel delivery problem or the loose tail hub. Anyway I burned two tanks of fuel today with no trouble and hovered inverted and did alot of inverted climb outs with no trouble. What I fixed was the loose tail hub and took the clunk off my header tank (thought maybe it was picking up air) There was some air bubbles in my main line from the tank so I will remove it tonight and check it out to make sure all is ok there. I am glad it seems to be fixed now but I still have to get over the fear of the engine going to idle now and move on.

Thanks for the help guys!

Chris
10-28-2001 Over year old.
HOMEPAGE  
 
 
Augusto
rrAdvertiser
Location: San Diego, CA

If it starts again one way to test it is set the failsafe to middle throttle instead of idle and if when inverted it goes to middle throttle then you know it is a radio issue.

Avant Aurora Ultimate
10-29-2001 Over year old.
 
 
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Radio - Servo - Gyro - Gov - Batt > radio glitch HELP!
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