rudder or engine thrust

[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.

[Tweaker]

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

If you get the plane trimmed,thrust and cg set you should only need 4 mixes (that I can think of), I only use two at this point in my learning curve. I use rudder to elevator and rudder to ailerons for knife edge flight, the other two I think of are throttle to rudder and possibly throttle to elevator for downlines.

I'm a noob so I'm not real savy on trimming or mixing but I'm getting better and threads like this will help me get there.

Scott

[Al Lewis]

Haven't read the whole thread so if this has been stated I apologize. Run the plane in level flight at half throttle. Hit full throttle. If the plane turns to the left or right, up or down, then you have a thrust issue. If not, you have a trim issue.

[SportFlyer]

	Quote: Originally Posted by Tweaker
	If you get the plane trimmed,thrust and cg set you should only need 4 mixes (that I can think of), I only use two at this point in my learning curve. I use rudder to elevator and rudder to ailerons for knife edge flight, the other two I think of are throttle to rudder and possibly throttle to elevator for downlines. I'm a noob so I'm not real savy on trimming or mixing but I'm getting better and threads like this will help me get there. Scott

Problem is with the radio I'm running, I only have three P-mixes and I have to burn two just on the ailerons for rudder to aileron mix (2 separate channels for ailerons and I have to mix each on with rudder) and then I have a smoke mix so I'm out of mixes...I had the last mix for rudder to elevator but couldn't get it dialed in so I put smoke in and used it there instead....I need another radio...LOL!!!

[3D-Seth]

	Quote: Originally Posted by scott m lyons
	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?

Thats a bad idea. Your airplane will roll funny that way. Why not set it with thrust and trim the rudder normally so you don't have a bunch of trim in the airplane? That will make just that much more work for you.

This is how I set my planes up for freestyle AND IMAC flying:

Find the CG at which I want the airplane to be.
Trim the rudder for level flight.
Check the thrust angle. Fly a vertical upline (pulling vertical with the wings LEVEL. I CAN NOT STRESS THIS ENOUGH). Most planes are good with the stock built in thrust, but everyonce in a while, you need to adjust this.

Without wind, no rudder is needed for a straight harrier. The little bit your rudder is trimmed does not affect 3D flight in any way. Theres so little deflection, and so little airflow over the tail, the airplane won't do anything with 1/2 degree of deflection on the rudder. Thats why we use 3D rates when we fly 3D high alpha stuff anyways.

Just my .02 though

Seth

[Sukhoikid]

I am wondering if RC planes react the same as full scale. When power is givin you usually have to give it right rudder to keep it in a climb or you will veer off left. I am taking aerodynamics in college next year, but was wondering if a rc plane has the same affect. One thing we got to consider though is the power to weight ratio we have with models that full scale doesnt have. I would believe this makes a difference.

[3D-Seth]

	Quote: Originally Posted by Sukhoikid
	I am wondering if RC planes react the same as full scale. When power is givin you usually have to give it right rudder to keep it in a climb or you will veer off left. I am taking aerodynamics in college next year, but was wondering if a rc plane has the same affect. One thing we got to consider though is the power to weight ratio we have with models that full scale doesnt have. I would believe this makes a difference.

I have really only noticed this if i you just bolt the throttle. If you smoothly/slowly transition, theres not much pull to the left.

Seth