REFLECTOR: Trim authority

[Al Gietzen]

During initial install I kept the trim spring as long as possible (just so
it clears the top of the fuselage) to give it more range; and trimmed its
width to allow full, or nearly full, elevator deflection opposite the trim
motor run to full extension to insure controllability in the event of a trim
motor malfunction. 

Al, 

How much width did you trim off?  How much force does it take for opposite
deflection? 

John

John;

The width of the ? trim spring in mine is about 1 ¾” – uniform width to
avoid concentrating bending stress in one area.  Just guesstimating; I’d say
with full down-trim (elevator up) it takes 25+ lbs stick force to pull
elevator to about 1” down – which is about what I’d need for landing.
Similar in the other direction to get about 1” up. 

Hope this helps.

Just went flying around a bit today – with our current slightly easterly
flow, temps mid 70’s, smooth, crystal clear for 50 miles. Did a perfect
landing, I’d rank in the top 5 ever - makes you love your airplane. 

Al

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