servo arm installed. It may be
installed with RTV silicone,
THICK CA, or screws.
Locate the components for the control
horn assemblies.
Install the control horns with the
clevis holes over the hinge line as
shown. Notice the offset for the
elevator rod clearance.
Install the rudder horn the same way,
but with no offset. Fabricate the
control rods with “Z” bends at the
servo arm as shown.
The same process will be used to
install the aileron horns and to
fabricate the aileron control rods.
Because of the large assortment of
motors in the 370 class, it will be
necessary to fabricate a mount for the
one you chose. Shown is the mount
used for the MPI brushless motor. It
was fabricated from ½- inch square
hard balsa.
1/2-inch square balsa
Balsa support.
Using the battery for ballast, adjust
the C.G. from 2.75-3.25 inches back
on the wing, measured against the side
