19
Boom tube doublers in place.
Rudder servo mount parts. All are ¼ ply.
Servo mount assembled.
Boom tube Doublers
The boom tube doublers are ¼ inch ply and give
added support to the aluminum boom tubes.
Use the boom tubes to locate these and epoxy in
place. Use clamps and remove the aluminum
boom tubes before the epoxy cures.
Wipe off any epoxy on the tubes.
Rudder Servo
Assemble the rudder servo mount. This is made
from the servo mount base parts and the strap.
This mount will fit “quarter scale” sized servos.
The rudder servo mount base is assembled from
3 pieces.
Glue the ¼ inch spacer to the bottom side of one
of the mount halves. Be sure that the spacer is
perfectly aligned.
Glue the other half to the spacer.
We used medium CA for this.
Put this assembly on the bench to be sure that it
sits flat.
Clamp until cured.
Check the height of your servo. The mount
should be a tiny bit shorter than your servo.
If necessary, sand the top of the mounts slightly
until the servo is about 1/32 inch taller.
Set the ¼ ply strap in place and drill pilot holes
with a 1/16 bit.
Do not omit these or the ply will split.
Put the servo in place and clamp it down with the
strap and 4 servo screws.
Notice that the screws only need to be snug to
hold the servo securely in place.
