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Old 05-14-2012 | 04:46 PM
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From: freeland, MD
Default Real Flight G2

I cross posted this on the Sim forum also

I know it is past time to get a new sim, but the real flight G2 is what i have. I am trying to mix aileron and rudder on the P40 to eliminate adverse yaw. as a rookie i am not ready to use my left hand yet to bring rudder into play and since flat bottom wings with tons of dihedral have severe adverse yaw i wondered if this version will "mix". Does anyone know how to do it.
ALSO if i upgrade what is the consensus Real Flight or Phoenix
thanks

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Old 05-14-2012 | 05:55 PM
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Default RE: Real Flight G2

As for upgrades, I have Real Flight G5 and am really happy with it.

On your question, the rudder mix is about the worst way to handle that problem. Personally, I'd say that a pilot who hasn't yet learned to use the rudder shouldn't be flying a P-40 at all, but I also understand that sometimes you get planes you like and don't have money for anything else. Since you have a sim, why not just work on coordinating your turns? New skills is what it's for, so use it. While you're at it, work on learning to use your rudder to place landing approaches where you want them and to cross control for wind.

If you absolutely must band aid your adverse yaw problem instead of fixing it with piloting skills, aileron differential is a much, much better solution. Try setting them up where you have about 1/3 more up than down and go fly it. My Cub likes roughly 3/4 more up than down to drag its tail through a turn without me having to get on the rudder, but Cubs have a much worse adverse yaw problem than P-40's.
Old 05-15-2012 | 08:29 AM
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Default RE: Real Flight G2

I've done this mix for some rookies to get them used to co-ordinated turns...

In the sim what you do is assign another input to the receiver channel. This is simple....

Select the channel assigned to the rudder ( channel 4 ), then ADD another ( second ) complex input.
For the input source use the aileron input.

Modify the curve so that it goes to -8 at full left aileron to zero at stick center, then +8 again at full right aileron.

Check to to see that the rudder moves a bit as your ailerons go to their extremes, and that the rudder is moving in the right directly... if it is moving opposite of where it should, reverse the curve vaules.

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Re: Simulators

Try doing this kind of thing in other simulators and you'll find it is either impossible or convoluted... in Realflight it is almost trivial.

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I agree with Jester's suggestion that you LEARN to use the rudder instead of relying upon the electronics.


Old 05-15-2012 | 05:22 PM
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Default RE: Real Flight G2

And that's not just from being a purist and pushing for flying skills instead of mixes. It's also about the very real issue that in various wind the amount of rudder correction needed differs, and the matter of landings where you may need to use a little aileron to level your wings but don't need any rudder. It's not like coordinating turns is that hard anyway. You push the left stick a little bit in the same direction you push the right stick. If that really is a challenge for you then seriously, you're not ready for a P-40.
Old 05-15-2012 | 07:50 PM
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Default RE: Real Flight G2

sorry  i misspoke
flying a PT 40  flat bottom dihedral trainer
Old 05-16-2012 | 06:33 AM
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Default RE: Real Flight G2

Oh, well that changes everything. On the PT-40, set up some aileron differential to fix the adverse yaw problem. You can do that very easily with one of those 6 armed servo horns. Make a "V" pointing away from the linkage to the ailerons and fix your pushrods to make the ailerons straight with the bottom of the wing again. That will give you more up throw than down which should eliminate most if not all of the adverse yaw. This is a much better solution because to mix rudder in that plane is also going to give you some roll coupling which you'll have to correct for.

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