Dave,

        The system that you describe is the exact type of system that I have in my
(full-size) Lancair ES for rudder and aileron trim.

Hoyt


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of D Luff
Sent: Tuesday, February 26, 2002 9:53 AM
To: [EMAIL PROTECTED]
Subject: Re: [Flightgear-devel] Animated C172


Alex Perry writes:

(lots about trim)

>
> For zero force yoke (aka centered joystick), motion of the trim
> causes the tab to move one way and the elevator to move the other.
> The ratio of the two angular rates is about equal to the ratio of the
> two lengths of the movable pieces of metal.  I don't know what it is
> offhand; it should be apparent from any photo of that area.
>

I've been wondering for a while - suppose I take a non-force
feedback yoke, and attach a wheel that actually moved the neutral
position by moving the end points of both springs backwards or
forwards, and use this instead of the software trim, would this be a
reasonably realistic approximation of elevator trim (from the pilots
perspective) or not?

Cheers - Dave

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