HITEC OPTIC 6 - Page 42

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A
ircraft Fli
g
ht Trimmin
g
Chart
To test for... Test Procedure Observations Ad
j
ustments
2. Contro
l
throw
s
Fly the model and apply ful
l
deflection of each control i
n
turn
Check the response of each control
-
Aileron high-rate: 3 rolls in 4 seconds;
low-rate:
3 rolls/6 sec
- Elevator high-rate: to give a smooth
square
corner; low-rate gives approx.
130
ft diameter loop
- Rudder: high-rate 30-35 ° for stall
turns;
low rate maintains knife-edge
Change EPA (for high rates),
and
Dual Rate settings (for
low
rates) to achieve desired
responses.
3. Decalage Powe
r
off vertical dive
(crosswind if any). Release
controls
when model vertical
(
elevato
r
trim must be neutral
)
A
. Model continues straight down
B.
Model starts to pull out (nose up)?
C.
Model starts to tuck in (nose down)?
A
. No adjustment
B.
Reduce incidence
C.
Increase incidence
4.
Cente
r
of
Gravity
5. Tip weight
(coarse
adjustment)
Method 1: Roll into near
vertically-banked
turn.
Method 2: Roll model inverted
Fly model straight & level
upright.
Check aileron trim
maintains
level wings. Roll
model
inverted, wings level.
Release
aileron stick.
A
1. Nose drops
B1.
Tail drops
A
2. Lots of forward stick (down
elevator)
required to maintain level
flight
B2. No forward stick (down elevator)
required
to maintain level flight, or
model
climbs
A
. Model does not drop a wing.
B.
Left wing drops.
C. Right wing drops
A
. Add weight to tail
B.
Add weight to nose
A
. No adjustment
B. Add weight to right tip.
C.
Add weight to left tip.
6. Side Thrust
&
Warped Win
g
7. Up/Down
Thrust
Fly model away from you int
o
any wind. Pull it into a vertica
l
climb, watch for deviations a
s
it slows down.
Fly the model on normal path
into
any wind, parallel to strip,
at
a distance of around 100
meters
from you (elevator trim
should
be neutral as per Test
3).
Pull it into a vertical climb
& neutralize elevator
A
. Model continues straight up.
B.
Model veers left
C. Model veers right
D. Model rolls right
A
. Model continues straight up
B. Model pitches up (goes toward top
of
model)
C. Model pitches down (goes toward
bottom
of model)
A
. No adjustment
B.
Add right thrust
C. Reduce right thrust
D. Put trim tab under left
wing
tip *
A
. No adjustment
B. Add down thrust
C. Reduce down thrust
8.
Tip weight
(fine
adjustment)
Method 1: fly the model as per
Test
6 and pull into a
reasonably
small diameter
loop
(one loop only)
Method 2: fly the model as per
Test
6 and then push into
an
outside loop (one only,
fairly
tight)
A
. Model comes out with wings level
B.
Model comes out right wing low
C.
Model comes out left wing low
A
. No adjustment necessary
B.
Add weight to left tip
C. Add wei
g
ht to ri
g
ht ti
p
A
ircraf
t
Fli
g
h
t
Trimmin
g
Chart
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Pa
g
e 4
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