Quest questions...

[Dave Dolzine]

Earl, I am having very similar results on my Quest.  I have a YS 1.20 on
mine (got the engine cheap second hand -runs great).  First flight had to
hold way too much down for inverted flight so started moving batteries back,
then eventually added 2 oz. lead to the tail (I was expecting this with the
extra weight of the 1.20).  Now the inverted flight is almost hands off
(very little if any pressure to hold line).  I want to add a bit more, but I
think I am getting close to the edge, as landings are becoming a bit sporty.
The thing that is not getting any better is the tracking on the 45 lines -
ie. pull to 45 roll inverted the nose wants to drop - does not maintain
track - same on down line 45 degree.   Does the CG play the same roll on
"tracking" for 45 as it would for inverted.
 
I am going to have to check the thrust line thing - in mounting the 1.20 I
replace the firewall with 1/4 ply and used the Dave Brown isolation mounts.
Since the cowl fits relatively tight  and square - I just centered the
thrust line to the cowl with the ~2 degree right thrust.  Would the thrust
line high/low or up/down thrust angle cause the tracking issue?  (I have
zero trim for straight and level flight).
 
I have to say this is a really a great little pattern plane, especially one
to get people started.  Or as in my case, a quick pattern plane to keep you
flying while you build a real 2 meter.  It point rolls and slow rolls
better/easier than my Focus did (may it rest in peace).  
 
- DD
 
 
 

-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On
Behalf Of Earl Vincent
Sent: Monday, December 01, 2003 11:43 AM
To: discussion at nsrca.org
Subject: Re: Quest questions...


Plans say 165mm approx 6.5 inch from leading edge if he is balanced there
then what Eric said about the
thrust line is true if your below the planes intended thrust line it will
act like up thrust and above it will act like
down thrust, the kit is a little strange, it mounts the inverted engine on
the top of the engine bearers. making the
actual thrust line approx 1/4 inch above the top (looking from the top of
the plane) of the maple beam installed in the firewall per the plans. Most
engines center of thrust is the bottom or the machined surface of the side
lugs, I missed it at first and had ordered the wrong rise header from Karl.
If balanced corectly and thrust line
is ok  the elevators should be straight when trimmed for level flight.
Earl Vincent

----- Original Message ----- 
From: Earl  <mailto:ev3464 at sccoast.net> Vincent 
To: discussion at nsrca.org <mailto:discussion at nsrca.org>  
Sent: Monday, December 01, 2003 5:14 AM
Subject: Re: Quest questions...

Emory, What is he using as a motor mount on the electric, make sure he does
not have up or down thrush in the motor, it should be at 0 down with 2
degrees right. No wing shimming was done but this plane even when
very tail heavy takes some down inverted, when you are to tail heavy it will
be a bear to land. I learned the hard way. I may have stated the pitch
wrong, under med rudder inputs i.e. normal knife edge no mix, hard rudder
inputs knife edge loops etc. it will come to the canopy slightly.
Earl Vincent

----- Original Message ----- 
From: Emory  <mailto:emorydmd at earthlink.net> Schroeter 
To: Pattern NSRCA <mailto:discussion at nsrca.org>  
Sent: Sunday, November 30, 2003 8:38 PM
Subject: Quest questions...

Hello,
 
I wanted some input from those of you that have been flying a Quest from
Creek Hobbies. A guy at my field is flying one and is trying to get it
trimmed correctly. He has it set-up using an electric motor, similar to what
Jason flew at the worlds. The power is great and the speed is so consistent.
He will be flying intermediate and I think that is going to be a great
plane. Anyway, here are my questions...
1) Where are most of you running  your CG? He has his about 1/2-3/4" behind
what is recommended.
2) Did you have to adjust or shim the wing to get the proper incidence?
 
Most of what I have seen posted on this list about that plane is that it
doesn't require any mixing. His pitches to the canopy in knife edge and
requires a lot of down pressure on the stick when inverted. Any help is
appreciated.
 
Thanks, Emory Schroeter.

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