Why my harrier is not stable?!! - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 05-13-2010, 02:49 AM   #11
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I am: Gerald B
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Re: Why my harrier is not stable?!!

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every 3d plane i have ever flown has some wing rock in upright harriers. This is true of all my foamies, 480 size e-flights, funtana's, and 33%ers.
I have found that if you just let it go it will continue to rock back and forth. What usually works for me is to get it into a bit of a slip...find the spot where you can catch the rocking to stablize it and then feed in rudder (most of the time i feed in right ail and left rudder for example.... i think... i might have to get someone to watch my sticks)
On my bigger ones I compensate the rock with rudder and ailerons, almost having to anticipate the rocking..
I think this gets the verticle stab into some air from the side... and the sideslip is not too noticable.
Wing rock is definately due to the verticle stab and rudder not seeing'clean' air, as every one of my planes will inverted harrier rock solid compared to upright.

Or, as posted above, your motor might be too new and you need another 10 gals thru it. Could try an older motor??
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