Engine thrust, incidences for Focus II

[john tarpinian]

I originally had 2.5 degrees rught thrust and had to
hold a lot of right rudder.  I have since changed to
3.5 degres and this seems about right. I run a YS140L.

I set up the incidences per the instructions.

John


--- Ed White <edvwhite at yahoo.com> wrote:

> 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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