7
ASSEMBLE THE WINGS
Install the Aileron Servos
Part of installing the aileron servos is deciding how you are
going to connect the servos to your receiver. If you’re using
only the
two
servos in the bottom wing you can connect them
with a standard Y-connector and guide the male end of the Y
that goes into the receiver out the wing. Or, you may connect
the servos to separate channels in your receiver mixing them
electronically through programming in your transmitter.
But if you’re using
four
servos there are even more ways to mix
the servos depending on how many channels are available in
your radio. One way would be to connect each aileron servo
to separate channels in the receiver, controlling them with a
programmable mix. The advantage here would be the ability
to independently adjust each servo’s sub trim and end points
for the ultimate in precision and tuning. But then at least a
7-channel receiver would be required and all the additional
servo extensions to connect each one to the receiver.
Another way is with a standard 2-aileron wing mix found
under the “wing type” mix in most transmitters. This mixes
two aileron servos, but then you will have to “Y” the top and
bottom servos on each wing half and will not have the ability
to adjust the sub trims and end points of each servo.
But since all options (other than controlling the servos
separately with four channels) eliminate adjusting the servos
independently with end points and sub trims, we just kept it
simple and “Y’d” the servos in the top wing to each other and
“Y’d” the servos in the bottom wing to each other, then “Y’d”
the “Y’s” together inside the fuselage into a single aileron
channel. The advantage with this option is only one servo
wire coming from the top wing which is simpler and more
aesthetically pleasing.
The following instructions illustrate installing and
hooking up the ailerons in the bottom wing. If installing
servos in the top wing too, simply perform the steps
for all four servos.
❏
1. Trim one of the 5/16" x 9/16" x 3/4" [8 x 15 x 20mm]
servo mount blocks
to accommodate the servo wire where
it exits the servo case.
❏
2. H o l d t wo
blocks to the servo
with thin cardstock
between the blocks
and the servo and
under the ser vo
between the servo
and your workbench
as shown. Drill 1/16"
[1.6mm] holes into
the blocks for the
se r vo mounting
screws.
❏
3. Make another
aileron servo/mount
b l o c k a s s e m b l y
mirroring the first
and drill the holes
and mount to the
servo.
❏
4. Apply 30-minute epoxy to the bottom of the mount
blocks where they contact the hatch covers. Also wipe a
fi lm of epoxy onto the hatch covers where the mount blocks
will land. Wait a few minutes for the epoxy to soak into the
mount blocks, apply more epoxy if needed, then position
the servos on the hatch covers so the servo arms will be
centered in the cutouts. Use weights or clamps to hold the
servo blocks to the hatches until the epoxy hardened.
