SIG RASCAL FORTY Assembly Manual page 4

2) The aileron servos are now mounted to the molded plastic
servo hatch covers. Begin by installing the rubber grommets and
brass eyelets, (supplied with your radio system), into each servo.
Use epoxy to mount the hardwood blocks to the inside surface of
the hatch cover, using the servo for spacing. Be sure to locate the
servo with the output arm directly over the center of the molded
aileron pushrod fairing as shown. Allow the epoxy to cure.
With the mounting blocks now positioned and glued in place,
remove the servo. Use a a Dremel
drum bit to open the ends of the plastic aileron pushrod fairings
where the pushrod passes through from the servo arm to the
aileron horn.
With the two servo trays now prepared, use the mounting screws
provided with your radio system to secure the aileron servos to the
mounting blocks. We suggest drilling small pilot holes first to avoid
splitting the blocks.
3) The final preparation step for the servo trays is to drill two
1/32" diameter holes in each servo tray, one directly beneath both
hardwood servo mounting blocks, as shown. Use the four #2 x 6mm
self-tapping screws provided to secure the mounting blocks.
® Tool and a tapered sanding
4) Plug a 24" servo extension lead into each servo plug and
secure the connection with plastic tape. Reach into the aileron
servo bay and pull the small piece of wood with the attached string
out of the opening. Remove the wood piece and securely tie the
end of the string onto the end of the servo lead extension. From
the inboard oblong opening near the center section of the wing
panel, reach in and remove the piece of wood with the string tied
to it - tweezers or needle nose pliers are handy for this. Lightly pull
on the string to route the servo lead cable through the wing and
out through the oblong center section opening. Pull the servo lead
fully out of the exit hole, leaving no slack in the aileron servo bay.
5) Carefully fit the plastic aileron servo tray, with the servo
mounted, into the aileron servo bay. Since it is easily viewed
through the top of the wing, align the servo accurately within the
wing. Use pieces of masking tape to hold the servo tray in final
position. Using the pre-drilled mounting holes in the servo tray as
a guide, drill four 1/32" dia. guide holes through the sheeting in the
bottom of the wing. Mount the servo tray using the provided
#2 x 5/16" Phillips/Washer Head self-tapping screws. Mount the
remaining servo tray into the remaining wing panel in the same
manner. Because the servo tray will have to be removed briefly in
the next few steps, remove the screws and set them aside for now.
4