Extreme Flight 78" EXTRA 300 ARF Instruction Manual page 25

behind the F1 former and place the cowl into position, flush with the rear of the F1
former. Place your spinner (76mm) on the motor to help align with cowl. View the cowl
from several angles to insure that it is positioned properly. When satisfied put the four
tape strips back into position and drill a 1/8" hole at the location of each of the 4 ink
marks.
29. Remove the cowl and soak the cowl mounting tabs with thin CA. Install the 4 3mm
blind nuts into the cowl mounting tabs. The cowl is secured using 4 3mm socket head bolts
in conjunction with 4 bonded sealing washers as shown.
30. The canopy on the electric version is retained by a dual spring loaded hatch latch
mechanism. The wings are retained by inserting the 1/4x20 nylon bolts through the holes
in the fuselage just behind the wing tube and into the pre-installed blind nuts in the root
rib of the wing. Be careful not to cross thread the bolts and inspect them periodically
to insure thread integrity.
31. Included in your Extra kit is a set of side force generators (SFGs). These aerodynamic
devices add to the effective side area of the aircraft making knife edge flight and other
maneuvers that depend on rudder authority easier and more stable. The SFGs also tend
to make the aircraft more stable in high angle of attack maneuvers (harriers). I highly
recommend that you install them on your aircraft and experiment. They are secured to
each wingtip with 3 3mm bolts and a plastic washer inserted into pre-installed blind nuts
in each wing tip.
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