Trim setting is fading - Help

[Tex]

I have a question, may be nothing but I need to know.
Earlier in the season I was flying my Yak and lost bind and the Yak died a premature death. Now I remember that my trim settings were out of whack right before I lost bind, in other words the plane was rolling slightly to left and the rudder was out of trim to the left also, so I retrimed it thinking why have I lost the trim settings.

Now to present time.....I was flying my new Dalton yesterday (maiden flight) and I trimmed the plane, its flying real good. The last flight I noticed that the trim was out of whack, plane was rolling to the left so I had to retrim it just as before with the Yak. I didnt think any thing about it yesterday but I just realized this is the same thing that happened when I lost my Yak.

So what gives.......anybody....

[DR10044]

More detail. What radio, receiver, etc., are you using?

[Tex]

	Quote: Originally Posted by DR10044
	More detail. What radio, receiver, etc., are you using?

Ok.....here is the setup
12x Radio
JR 1222 receiver
JR 8711 HV - 2 per wing / 1 each elevator / 2 rudder push-pull
2 5200 relions

this is new equipment.......the only thing thats the same from the Yak is the radio.......Radio has never been sent in for service. the radio is what I am leaning to.......maybe I need to send it in for updates or something.

[davensocal]

On the Yak you said you lost bind, but I take that to mean that you lost the RF link to the plane during flight, right?

You also said you were having trim issues and retrimmed it, I assume this means you gave it a few clicks here or there and it starting flying straight again. How long after that did you lose the link?

I would be checking the crap out of the system on the ground before the next flight!

Do you have a data logger?

[Tex]

	Quote: Originally Posted by davensocal
	On the Yak you said you lost bind, but I take that to mean that you lost the RF link to the plane during flight, right? You also said you were having trim issues and retrimmed it, I assume this means you gave it a few clicks here or there and it starting flying straight again. How long after that did you lose the link? I would be checking the crap out of the system on the ground before the next flight! Do you have a data logger?

Data logger is on the list..........It was the same flight when I had to retrim it before it went in.......I would say just a few minutes

[NCFR "Lucky"]

Before blaming the TX, recheck all of your control linkages, bolts, etc. Usually when a plane goes out of trim in flight, something is loose or has moved.

[50%plane]

I would double check linkages and everything, also, use the data logger. Maybe you are getting interference from reciever placement. If no success, I would call horizon. Maybe they have a suggestion.


JMO,
Chris

[Tex]

	Quote: Originally Posted by NCFR!!
	Before blaming the TX, recheck all of your control linkages, bolts, etc. Usually when a plane goes out of trim in flight, something is loose or has moved.

Not blaming any thing just looking for answers...........I will check the linkages
thanks.

[Tex]

Could a cross brace coming off throw it out of trim ?

[Cracky]

if the fuse flexes or twists it could shift a wing/stab

[NCFR "Lucky"]

	Quote: Originally Posted by Tex
	Could a cross brace coming off throw it out of trim ?

Anything is suspect at this point. I would start with servo horns, linkages, hinges, wing/stab bolts, engine mounting bolts, make sure the vertical stab is secure - heck, even a landing gear twisting could cause a slight change in trim. Inspect the fuse to see that all of the glue joints are holding - stringers, cross braces, everything.

[Tex]

Thanks guys ...........I guess I will have to go through every thing and make sure its right.......Sunday will be its 2nd outing.

Thanks again

[MODE 1]

So two different planes each with their own Rx did the same thing?.....Has to be the Tx
or did you use the crashed equipment for the latest plane....without having it looked at ? LOL please say no

[Tex]

	Quote: Originally Posted by MODE 1
	So two different planes each with their own Rx did the same thing?.....Has to be the Tx or did you use the crashed equipment for the latest plane....without having it looked at ? LOL please say no

Hell no........

[MODE 1]

Just checking some ppl would do it....well what are the odds on the same links giving probs on the same sides & surfaces on two diff models? Wouldnt hurt to send the Tx in for a checkup.