Trim basics

FSX including FSX Steam version.

Trim basics

Postby Aquitaine » Sat Oct 27, 2007 11:51 am

Okay, so maybe I'm a complete idiot, but even with a fancy X52 Pro and a decent understanding of the physics involved, trim constantly seems to get the better of me.

Let's say I'm in slow flight and I want to trim for my current speed. Is there a "trim to the current pressure I have on the yoke" button? I always end up hitting home or end and then overshooting or undershooting, and it takes forever just to get it right. Is this simply a skill you acquire after you do it enough times? It seems disproportionately frustrating next to everything else.

Sincerely,
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Re: Trim basics

Postby MattNW » Sat Oct 27, 2007 6:42 pm

First of all you need to wait a little after making a trim change to let the aircraft settle down to the new trim setting. It's even more important in the sim because the aircraft don't seem to be as stable as you find in real life. In a real small airplane you should settle down with only a couple bounces when you make a change in pitch. In the sim it can be five or six oscillations.

Other than that the trim isn't perfect in MSFS in general. It seems you are always a little undertrimmed or overtrimmed. In a real aircraft you have almost infinite adjustment. In the sim it's in steps and they always seem to be a be either too much or too little. Of course that doesn't really matter because in a real aircraft you will almost never fly in conditions where you can just trim it and let go of the controls and the airplane flies straight and level. Same thing in the sim except for a different reason. If it's too bad however you can play around with the "elevator_trim_effectiveness" in the aircraft.cfg file. Just be sure you make a backup copy.
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Re: Trim basics

Postby Aquitaine » Sat Oct 27, 2007 6:58 pm

Ahh, okay. I always felt like a total idiot when Machado would come on and say "okay, now just trim for knots" and immediately go to the next step and I'd be all, "wait! I need another 2 and a half minutes to get this trim just right!" And so now I usually just ignore trim unless it's something like a holding pattern.

I'm spending a while with FSX before I spend real money on an LSA or PVT so am glad to hear the real thing is more forgiving. Probably one of the few areas where that's true. :)
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