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<DIV>Paul,</DIV>
<DIV>By proverse roll are you saying the plane corkscrews as it rolls? There are
a lot of possible reasons for this. You may need opposite differential
(more down than up). If you mean it rolls and wobbles you may need more
differential (more up than down). don't know what plane you are flying,
but most pattern planes don't really need differential. When I've seen
this it has been due to a forward CG or incorrectly set wing/stab
incidence. both are correctable (if you have wing adjusters).
Theres' gotta be a set of experienced hands near you that can help here.</DIV>
<DIV>--Lance</DIV>
<DIV> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=pwl45@yahoo.com href="mailto:pwl45@yahoo.com">Paul Lawrence</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, March 28, 2004 9:33
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Trimming Help</DIV>
<DIV><BR></DIV>
<DIV>After getting soundly beat in Ocala last weekend, I realized that I have
been getting proverse yaw as my plane rolls.</DIV>
<DIV>It wasn't evident until I saw other well-trimmed planes flying.</DIV>
<DIV>The plane yaws in the direction of roll input and I have been
experimenting with a multitude of aileron differential settings and can't seem
to remove the yaw.</DIV>
<DIV>With zero differential, the plane still yaws in the direction of
roll. </DIV>
<DIV>The trimming chart says to reduce differential in this condition, but I
have reduced it to zero.</DIV>
<DIV>Should I program in negative differential(doesn't sound good) or
should I program a litle bit of opposite rudder correction to offset the
proverse yaw?</DIV>
<DIV> </DIV>
<DIV>Also, does CG and Incidence affect adverse or proverse yaw while
rolling?</DIV>
<DIV>The plane was a little nose heavy and I have also been adding tail weight
to try and clean up the rolls, but still can't get that yaw out of the
rolls.</DIV>
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