SIG Rascal 110 Manual Update page 4

b. Repeat the previous step to tie the end of the flap retrievel
string to the flap servo plug.
c. Now break loose the wood piece in the oblong hole at the root
end of the wing panel to free the other ends of the aileron and flap
strings. Carefully begin pulling the strings and servo wires through
the wing panel towards the root end. Start with the flap string.
Lightly pull on the inboard end of the string while feeding the servo
chord into the hole inside of the servo bay. You may occasionally
feel like the wire has become stuck inside the wing. This is simply
the plug on the end of the servo wire hitting the side of the holes
in the wing ribs. Gently work the string back and forth from both
ends until the plug fits through the hole. Sometimes the servo plug
comes through all the ribs the first time without getting hung up,
and other times it seems like it gets hung up on every rib. Be
patient and don't try to force it. The holes in the ribs are large
enough to accommodate any common servo plug.
When the Flap servo plug becomes visible in the oblong hole,
reach in with a narrow needle nose pliers or a hemostat and grasp
the plug and pull it to the outside of the wing. Remove the string
from the plug and put an identification tag on the wire so you can
later identify this as the FLAP plug. Temporarily tape the plug to
the wing surface so they can't fall back inside the wing.
Once the flap plug is out of the hole, continue pulling the aileron
wire through the wing. Then repeat the entire process to pass the
aileron and flap servo wires through the other wing panel.
6) Mount the aileron and flap servos in their respective servo bays
in the wings, using the sixteen M2.6 x 8mm PWA Mounting Screws
provided (four screws per hatch).
a. Hold the servo/hatch in place and use a 5/64" dia. bit to drill a
hole in each corner of the servo hatch - through the hatch and
through the corner plywood mounting gussets that are built into
the wing. Be careful when doing this - do not run the drill bit
through the top of the wing!
b. Screw the hatches in place with the M2.6 x 8mm PWA
Mounting Screws.
7) At this point connect up your radio system so that you can
operate the aileron and flap servos in order to adjust their center
(neutral) position and overall travel.
a. Turn on the radio system and center the aileron trim lever on
the transmitter. Check to see if the aileron servo arms are both
perfectly centered on each servo - the arms need to be
perpendicular (90°) to the servo body when the servo is at neutral.
If necessary, take the servo arm off the servo and reposition to
make it perpendicular. If you are using a computer radio, you may
be able to easily center the two servos through the transmitter
menu. Note: If you have a double-sided servo arm, cut off the side
of the arm that you won't be using so that it cannot bind on the top
wing when the hatch/servo are installed in the wing.
b. While the radio is still on, determine if the servos are moving
the correct direction. Note that the aileron servos should be
moving in opposite directions to each other. If the direction of
travel is incorrect, reverse the action of the servos through the
transmitter. Doing this may re-center your servos a little. If so,
re-center the servo arms on the servos back to 90°.
c. Also check to see that the arm does not travel too far and hit
the ends of the slot in the hatch, or otherwise bind on the hatch in
any way.
d. Repeat this step to setup the flap servos - except with the flap
servos you are not concerned about a neutral position, only with
the overall travel volume. Look ahead to the section titled FLAP
HOOKUP to understand the full operation of the flaps.
*Note: Which channel to use for flaps? Some transmitters have a
toggle switch to activate the flap channel. These are typically two
or three position switches that give one or two pre-set flap angles
upon activation. While this works fine in many cases, we much
prefer to operate the flaps with a transmitter knob that allows us to
roll in as much or as little flap input as needed for the wind
conditions during any given flight. Check your radio manual to
figure out the best way to operate the flaps on your Rascal 110.
8) From the kit contents locate the following items:
(4) Nylon Control Horns
(8) M3 x 12 mm PWA Screws for mounting the control horns
(4) 4-40 x 4" Threaded Pushrods
(4) 4-40 R/C Links
(4) 4-40 Hex Nuts
AILERON HOOKUP
9) Use two pieces of tape to secure each end of the aileron to the
wing panel, holding it in neutral position.
10) Prepare the nylon control horns for mounting by first drilling out
the two holes in the base with a 3/32" dia. bit. This allows the
mounting screws to pass more freely.
a. Connect the R/C link on one end of the 4-40 pushrod into the
outermost hole of the aileron servo arm. (Note: If the clevis pin is
hard to snap into the hole in the servo arm, open up the hole in the
arm with a 1/16" dia. drill bit.)
b. Install a Nylon Control Horn on the other end of the 4-40
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