FUTABA FP-8SSHP Instruction Manual page 26

•General adjustments
Make the basic fuselage linkages and adjust-
ments according to the helicopter manufac-
turer's assembly and adjustment instructions.
1 . Check the direction of operation of each servo. If
the servo rotates in the wrong direction, switch the
setting of the pertinent servo reserving switch.
2. Set the idle up [1] switch [19], idle up [2] switch
[21] and throttle hold switch [23] to OFF (to the
opposite side).
3. Set the hovering pitch lever [6] and hovering throt-
tle knob [22] to about the center of the scale.
4. Check the left and right (up and down) throw of
each servo. If the throw is wrong, correct it with
the ATV trimmer and by changing the hole posi-
tion of the servo horn, etc.
(5 Set the throttle lever [3] to about the center medi-
um slow position and set the hovering memory
switch [34] to ON.
Set the compensation setting amount to 0 by
turning the hovering mix compensation setting
trimmer [16] on the trimmer panel at the back of
the transmitter.
6 Set the revolution mixing up knob [17] to about
division 5 and the revolution mixing down knob
[18] to about division 7.
7. Check the pitch control -> rudder mixing direction.
If the direction is wrong, correct it with switch [22]
24
on the trimmer panel on the back of the trans-
mitter.
8. Recheck the operating and mixing directions of
each servo, and set the hovering memory switch
[34] to OFF,
9. Check the engine and throttle linkage.
o Pull throttle when throttle lever in high position
Zero throttle when throttle lever in maximum
slow position and throttle trim in maximum slow
position.
o Set the ATL (Adjustable Throttle Limiter) to the
maximum limit. This is very convenient because
the high side does not change even if the slow
side is adjusted.
10 Turn the normal pitch trimmer [4] (high side pitch
trimmer [3] at
trimmer panel at the back of the transmitter and
set the pitch control high side trimmer [13] to the
maximum (upper) position. Set
pitch control servo throw when the throttle lever
is operated over its full stroke. Set the maximum
pitch width and set the pitch control high side
trimmer lever [13] to about the center.
Connect the linkage so the main rotor pitch
variation width is somewhat larger than that
recommended by the helicopter manufacturer.
the pitch trimmer [B] on the
for maximum
1 1 . Start the engine. After needle adjustment, hover
the helicopter, trim the ailerons and elevators, and
make the main rotor pitch larger during the next
hovering with the fuselage linkages. Then trim with
the hovering throttle knob [22] and pitch control
trimmer [6] . Adjust the throttle lever position at
hovering to 50% to 55% of its full stroke.
12. Trim the rudder by adjusting the linkage so the
rudder is in the neutral position when hovering.
13 After adjusting all the trim levers, hover and set
the hovering memory switch [34] to ON. The
memorized hovering point
even when the transmitter power is turned off. It
is cleared when the hovering memory switch [34] is
set to OFF.
14 If the helicopter slips to the right when hovering,
increase the mixing amount by turning the revolu-
tion mixing down side knob [ 1 8] clockwise. If the
helicopter slips to the left. turn the knob counter-
clockwise.
15 If the helicopter slips to the left when climbing
from hovering, turn the revolution mixing up
knob [17] clockwise. If the helicopter slips to the
right, turn the knob counterclockwise.
16 Next adjust the acceleration amount with trimmer
[15] of the rudder trimmers [D] on the trimmer
panel at the back of the transmitter. Although it
depends on the helicopter, it should have some
effect because of the interaction with the rate
gyro output. For f i x e d pitch helicopters, a pitch
of about 0 is usually suitable.
17 Adjust the normal pitch trimmer [4] of the pitch
trimmers [B] on the trimmer panel of the ideal
pitch at takeoff. Although it depends on the
helicopter, a pitch of about 0 is usually suitable.
18 Rate gyro output adjustment
used)
• Hovering
Set the rate gyro control box scale to about 40%
to 80% of full scale, depending on the helicopter.
Increase the gyro output within the range at
which the tail does not swing back and forth.
• Maneuvering
Set the rate gyro control box to about 30 to 50%
of full scale, depending on the helicopter. Adjust-
ment within the range at which the tail does not
swing during high speed level flight is suitable.
19. Adjust the pitch control high side trim lever [3] so
the pitch is reduced during high speed level flight
so that the main rotor does not load the engine.
When flying in a strong wind, increase the pitch
slightly with this lever. Adjust to the conditions
for the time of day while flying.
remains memorized
(when FP-G152