Engine thrust, incidences for Focus II

[Ed White]

Rich,

You can find a wealth of information on building the
Focus II in the RCUniverse thread titled "Focus II ARF
construction by-the-numbers".  I strongly suggest you
read the thread and my great thanks to Don Szczur for
it.

Per this thread, I added a little right thrust more
than the kit would give.  I ended up about 1.8 deg
right and would build to 2 deg right thrust if I did
it again.  Downthrust was per the kit and I would go
with that.  Pulls straight in up lines.  

On stab alignment the hole built into the fuse was
almost perfect.  Gave the recommended incidence as
close as I could measure, and needed just a little
sanding to make the stab and wing parallel.  Go with
the incidence in the manual. 

On the wing, the manual says build to a 1/2 deg
positive incidence (on page 5), but then to trim for
flight (on page 10) set it to zero incidence??  I
built/flew to zero (figured if I didn't like zero
that's why there are wing adjusters).  It flew very
nicely as built.  I have a small amount of pitch
mixing in knife-edge (couple %) which I could probably
get rid of with CG and wing incidence adjustment (they
are tightly coupled).  In downlines it had a mild pull
to canopy, I mixed 3% down elevator at low throttle.

As time goes on I'll do a little more fine tuning, but
I'm pretty happy with how it flys now.

Ed


--- "Fletcher, Richard" <Richard.Fletcher at gs.com>
wrote:

> Any one know what the  correct number of degrees of
> down and right thrust
> are? Also, the manual says the wing needs positive
> and the stab negative,
> anyone find this to be inaccurate? Most of my planes
> are setup zero - zero.
>  
>  
>  
> Thanks, Rich
> 

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