Help Please!
02-22-2011 | 01:32 PM
#26
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From: Poolesville, MD
RE: Help Please!
Bowing indicates the servo is moving beyond what the pushrods can sustain. You should set your TX endpoints to prevent this from occuring.
Once you have the endpoints set make sure that the elevator is held in place when you apply a light force upon it. If it moves easily, air movement may create a harmonic rise and drop ( much like VERY SLOW flutter ) causing the plane to waffle up and down.
You said your plane was "porposing", by that I take it you mean it was moving up and down.
Bare in mind that many different things could be in play.
The plane's pushrods may not be set up properly.
The elevator may not be holding position.
Downthrust combined with initial trims not being right, can cause the plane to pull down as you throttle up ( or up ) and up as you throttle off.
etc. etc.
A true C.G. issue is determined by flying the plane upright, then again inverted.
If the plane climbs both upright and especially inverted the C.G. is too far back.
If the plane maintains level both upright and inverted, the C.G. may be OK, but too far back for a Warbird ( great for 3D though! )
If the plane enters a slowly increasing dive from upright and a bit faster when inverted, the C.G. is fine.
Once you have the endpoints set make sure that the elevator is held in place when you apply a light force upon it. If it moves easily, air movement may create a harmonic rise and drop ( much like VERY SLOW flutter ) causing the plane to waffle up and down.
You said your plane was "porposing", by that I take it you mean it was moving up and down.
Bare in mind that many different things could be in play.
The plane's pushrods may not be set up properly.
The elevator may not be holding position.
Downthrust combined with initial trims not being right, can cause the plane to pull down as you throttle up ( or up ) and up as you throttle off.
etc. etc.
A true C.G. issue is determined by flying the plane upright, then again inverted.
If the plane climbs both upright and especially inverted the C.G. is too far back.
If the plane maintains level both upright and inverted, the C.G. may be OK, but too far back for a Warbird ( great for 3D though! )
If the plane enters a slowly increasing dive from upright and a bit faster when inverted, the C.G. is fine.
02-22-2011 | 04:02 PM
#27
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From: Warner Robins, GA
RE: Help Please!
Thanks for the info. I will try the TX end points first. By the way, I tried calling Nitroplanes tech support several times. Never got to talk to anyone even though I was next. Not very impressed at all. This might be the last airplane I buy from them. I hope someone from Nitroplanes reads this and actually responds!
02-23-2011 | 08:49 AM
#28
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From: Poolesville, MD
RE: Help Please!
They really have no tech support. They provide problem resolution help for issues with shipping in orders or damage, but that's it.
They've put up this forum and the ones over at rcdiscuss.com to let more experienced users help out others with problems.
There are also order resolution forums there too.
What you're experiencing falls more into the technical questions area, that they do not answer nor provide.
That's why the planes are sold inexpensively... there are no support staff salaries to pay...
They've put up this forum and the ones over at rcdiscuss.com to let more experienced users help out others with problems.
There are also order resolution forums there too.
What you're experiencing falls more into the technical questions area, that they do not answer nor provide.
That's why the planes are sold inexpensively... there are no support staff salaries to pay...
