rudder or engine thrust

[3D-Seth]

Trim the rudder first. Once the rudder is trimmed, then do your upline to see if you need more/less right thrust. All of my airplanes have a slight hint of right rudder trim when neutral to fly STRAIGHT. This has no effect on any maneuver if trimmed correctly. One thing to be sure of though: BE ABSOLUTELY SURE WHEN YOU PULL VERTICAL, THAT YOUR WINGS ARE LEVEL BEFORE YOU BEGIN YOUR PULL. EVEN IF YOUR WINGS ARE OFF 1º WHEN YOU PULL, YOU WILL ADVERSELY AFFECT YOUR UPLINE BY SEVERAL DEGREES.

Seth

[off2fly]

Good stuff!

[flyin woodbutcher]

you are not the only one. "Quite a few times I "re-learn" something and remember that I used to know it already. "

[octanehuffer]

Trimming a plane by my standards consists of noticing an adjustment being needed, flying the plane for a couple of days until I forget that it was never adjusted, then changing something on the plane and having to take 5 steps back in the trim process-- only to never adjust it again. I have been fighting one particular plane for over a year because I moved the Cg. Now it has a different amount of coupling. Its not much though. and yes I am a putz.

[RTK]

Carl Goldberg wrote an excellent article along with chart on how to trim an IMAC/pattern plane. As for thrust I run a few degrees and correct the rest/fine tune with a rudder to throttle mix and sometimes a throttle to elevator mix for down lines.
If I am lazy I do nothing and just correct with the sticks

[octanehuffer]

Wasnt that Pete Goldsmith. I have a printed 30 something page on how to do it by Pete.

[SportFlyer]

	Quote: Originally Posted by octanehuffer
	Trimming a plane by my standards consists of noticing an adjustment being needed, flying the plane for a couple of days until I forget that it was never adjusted, then changing something on the plane and having to take 5 steps back in the trim process-- only to never adjust it again. I have been fighting one particular plane for over a year because I moved the Cg. Now it has a different amount of coupling. Its not much though. and yes I am a putz.

Almost the same as I do...I learn to fly around it...but now that I'm bringing it closer to the ground I want to have less to fly around so that I don't fight it as much and lose the plane...

[RTK]

	Quote: Originally Posted by octanehuffer
	Wasnt that Pete Goldsmith. I have a printed 30 something page on how to do it by Pete.

Yes, I had a brain fart, must be getting old

[zoomer260]

I'm guessing that I have been lucky enough to not have a plane that flew so screwy that I had to adjust the thrust of the engine. But I have always just assumed I need to actually fly the plane in some attitudes. Knife edge being the most to fly straight. If I ever do actually pull the trigger on my next Extra I will put more time into it if needed.

As in a prior post maybe in a competition setting I too would strive for a hands off plane.

[scott m lyons]

	Quote: Originally Posted by 3D-Seth
	Trim the rudder first. Once the rudder is trimmed, then do your upline to see if you need more/less right thrust. All of my airplanes have a slight hint of right rudder trim when neutral to fly STRAIGHT. This has no effect on any maneuver if trimmed correctly. One thing to be sure of though: BE ABSOLUTELY SURE WHEN YOU PULL VERTICAL, THAT YOUR WINGS ARE LEVEL BEFORE YOU BEGIN YOUR PULL. EVEN IF YOUR WINGS ARE OFF 1º WHEN YOU PULL, YOU WILL ADVERSELY AFFECT YOUR UPLINE BY SEVERAL DEGREES. Seth

Hey Seth I usually do up line and bump my rudder trim till the plane flys uplines straight.Then do a throttle to rudder mix on a 7 point mix for three quarters to low throttle to center left.I usually end up with 3 degs right at full throttle and 3 degs left a low throttle.I found when I started doing inverted harriers with you're trim setups the plane would yaw alot.Now it tracks straigh no matter the atitude.Do you have to hold left rudder when doing harriers and high alfa stuff?

[JEFFRO503]

All i can say is that i really need to subscribe to this thread and learn some stuff. SUBSCRIBED!

[scott m lyons]

I see alot of guys in this thread that don't really trim their planes.I will tell you first hand about two years ago neither did I.Mostly because I didn't understand how or thought I'd mess up my plane.read the theads and learn because when I finelly did start to trim planes right my flying progrest by leaps and bounds.I know longer spent the flight correcting my plane but practicing manuvers instead.It usually takes 50 flights to get close and I don't mean spending the whole flight trimming.Trim some and fly some.Their is a order in which to follow so not to upset the last trim you did.PG's trimmimg chart is a awsome start.Trust me guys trim you're plane right and you'll have way more fun.

[SportFlyer]

What about those that don't have a lot of programmable mixes how do we get around that???

[RTK]

	Quote: Originally Posted by SportFlyer
	What about those that don't have a lot of programmable mixes how do we get around that???

Fly by the sticks or do old school and start cutting and moving.

	Quote: Originally Posted by scott m lyons
	Their is a order in which to follow so not to upset the last trim you did.PG's trimmimg chart is a awsome start..

Bingo, follow the order, it will be much easier and you won't be chasing your tail.

[Cobra1]

2 to 3 degrees of right thrust and then a throttle to rudder mix does the rest. This is so easy to see when flying directly away from you and varying the throttle. Anyway works for me.