Trimming Help

[Paul Lawrence]

The plane is a Tai Ji 60. I may have found an
incidence
problem too. I don't really know where the reference
line is for this model and I am also still learning
how to check incidence, but if I block up the plane
and get the wings at 0 degrees and then check the
stab, it is showing -1 degree of incidence. That seems
excessive.

I'm flying Intermediate and the yaw really shows up on
the humpty bump and full roll up on stall turn. When I
perform the humpty bump, I pull to vertical, 1/2 roll
right and the plane heads off to the left(belly in).
On the full roll up, the plane heads off to the right
after rolling right.

So far, I have received a lot of good advice and have
several things to try. Thanks.



> 
> 	-----Original Message----- 
> 	From: Paul Lawrence [mailto:pwl45 at yahoo.com] 
> 	Sent: Sun 3/28/2004 10:33 PM 
> 	To: discussion at nsrca.org 
> 	Cc: 
> 	Subject: Trimming Help
> 	
> 	
> 	After getting soundly beat in Ocala last weekend, I
> realized that I have been getting proverse yaw as my
> plane rolls.
> 	It wasn't evident until I saw other well-trimmed
> planes flying.
> 	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.
> 	With zero differential, the plane still yaws in the
> direction of roll. 
> 	The trimming chart says to reduce differential in
> this condition, but I have reduced it to zero.
> 	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?
> 	 
> 	Also, does CG and Incidence affect adverse or
> proverse yaw while rolling?
> 	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.
> 	 
> 
> 

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