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WHY???
Oct 29, 2008 21:59:02 GMT 10
Post by mikey100 on Oct 29, 2008 21:59:02 GMT 10
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WHY???
Oct 29, 2008 23:59:35 GMT 10
Post by sean on Oct 29, 2008 23:59:35 GMT 10
Could be that your pushrods expanded? Was it much colder last time you flew? Another possibility is that your CG has moved forward somehow, not unlikely if the last landing on your previous flight was hard, could have caused something to shift forward.
Sean.
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WHY???
Oct 30, 2008 6:08:33 GMT 10
Post by thevon on Oct 30, 2008 6:08:33 GMT 10
Or there could be a switch that you haven't realized you had set, and you've knocked it on. Or you put your radio down switched on, and something was pressing against the elevator trim button.
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WHY???
Oct 30, 2008 7:38:25 GMT 10
Post by mikey100 on Oct 30, 2008 7:38:25 GMT 10
Good ideas....... *Took 8 turns on the clevices to adjust so don't think it was a pushrod expansion problem. *Elevator trim was showing in centre when 1st switched on...just the servos both off centered, tho sub-trims exactly where I programmed them.
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WHY???
Oct 30, 2008 9:37:40 GMT 10
Post by Hamburglar on Oct 30, 2008 9:37:40 GMT 10
I had a similar thing happen. It turned out that battery had moved forward slightly on the previous landing/crash. I've heard that some servos will centre differently at different temperatures but never experienced it myself.
Jordan
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WHY???
Nov 1, 2008 14:34:14 GMT 10
Post by ding on Nov 1, 2008 14:34:14 GMT 10
Did you play with the mixing between flights. My bet is some kind of mixing or subtrim changes within the radio.
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WHY???
Nov 1, 2008 18:24:07 GMT 10
Post by mikey100 on Nov 1, 2008 18:24:07 GMT 10
no.
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WHY???
Nov 1, 2008 18:34:41 GMT 10
Post by felix on Nov 1, 2008 18:34:41 GMT 10
maybe your problem is mechanical in nature rather then electronic? I had something similar happen to my bee recently….had a shelf collapse in my shed and dump some paint tins,glues,etc onto my wing.a quick look over showed no damage.next time at the slope and I had next no up pitch control resulting in flying straight through a tree and crushing an elevon!!! Turned out that the control horns themselves had been shifted in the avalanche So maybe with flying loads,prangs,bad landings,etc the horns have shifted or loosened?
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WHY???
Nov 1, 2008 21:36:19 GMT 10
Post by callun on Nov 1, 2008 21:36:19 GMT 10
Or even the servos themselves moving is pretty common.
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WHY???
Nov 2, 2008 20:15:29 GMT 10
Post by mikey100 on Nov 2, 2008 20:15:29 GMT 10
The prob with my Bee came,back, but in reverse. I needed 15 clicks of DOWN trim today. No idea! Nothing seems loose etc.
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WHY???
Nov 2, 2008 20:38:02 GMT 10
Post by felix on Nov 2, 2008 20:38:02 GMT 10
Hey mate, just got to thinking about your problem….are the control surfaces actually moving between flights or simply just the trim you need for straight and level?
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WHY???
Nov 2, 2008 20:57:46 GMT 10
Post by mikey100 on Nov 2, 2008 20:57:46 GMT 10
You can see that the control surfaces are in a diff spot....so the servos are changin centre- both-same amount. I think I has got to be a transmitter prob, but dont know how.
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WHY???
Nov 2, 2008 21:48:22 GMT 10
Post by Pij on Nov 2, 2008 21:48:22 GMT 10
Hey mate, just got to thinking about your problem….are the control surfaces actually moving between flights or simply just the trim you need for straight and level? Good question, Felix. I was thinking of how I re-trim for the changing conditions - with lots of difference between mostly horizontal wind compared to mostly vertical lift. But this case has visibly different surface positions - weird. What about stripped teeth off servo gears?
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WHY???
Nov 4, 2008 15:08:52 GMT 10
Post by mikey100 on Nov 4, 2008 15:08:52 GMT 10
Metal gears....no stripping evident....both the same. Odd....
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WHY???
Nov 4, 2008 23:26:29 GMT 10
Post by ding on Nov 4, 2008 23:26:29 GMT 10
The prob with my Bee came,back, but in reverse. I needed 15 clicks of DOWN trim today. No idea! Nothing seems loose etc. Yep, it's the servos moving. They are held in by that double sided tape and after a while they come off and move up and down within the box.
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