Center Of Gravity - Horizon Hobby Hangar 9 Ki-43 Oscar 60cc Manuel D'utilisation

15. Remove the mounts and use medium grit sandpaper to sand the
area inside the cowling where the mounts rest, and an area at least
1/2 inch (13mm) outside of the area marked. Use a paper towel and
isopropyl alcohol to remove any oils or debris from the inside of the
cowling.
 Preparation for gluing the mounts is important to guarantee the
adhesive can properly bond the mounts to the inside of the cowling.
16. Mix 1/2 ounce (15ml) of 30-minute epoxy. Apply epoxy inside the
cowling in the areas for the mounts.
17. Apply epoxy to the mounts using an epoxy brush.
18. Place the mounts in position in the cowling. Allow the epoxy to fully
cure before proceeding.
 Create a fillet extending out 1/2 inch (13mm) from the mounts
to increase the bond between the mount and cowling.
19. Install the muffl er on the engine. Trim the cowling as necessary to
clear the muffl er or any other parts of the engine that may protrude
outside the cowling. Mount the cowling back on the fuselage. Install
the spinner backplate, propeller and spinner on the engine.
EN

CENTER OF GRAVITY

An important part of preparing the aircraft for fl ight is properly balancing the model. The Center of Gravity range
supplied here is a guideline based on testing. Deviation from the measurements we provide is possible and may result
in a model that suits your fl ying style better. Start with the recommended Center of Gravity, then feel free to experiment
with different balance points. We advise adjusting progressively and cautiously.
1. Attach the wing panels to the fuselage. Make sure to connect the leads from the aileron and fl aps to the
appropriate leads from the receiver. Make sure the leads, as well as the air lines from the retracts, are not
exposed outside the fuselage before tightening the wing bolts. Your model should be fl ight-ready before
balancing.
2. The recommended Center of Gravity (CG) location for your model is 6 inches (152.5mm) behind the leading edge
of the wing. Take this measurement against the fuselage where the wheel well extends forward of the leading
edge of the wing.
3. When balancing your model, make sure it is assembled and ready for fl ight. Support the plane inverted at the
marks made on the wing with your fi ngers or a commercially available balancing stand.
 The overall CG range for this model is 5
at the measurement listed above, then adjusting to suit your particular flying style.
 Nose weight may be required when using lighter weight engines. Move the batteries
as far forward in the fuselage to help reduce the amount of weight required.
CAUTION: You must adjust your aircraft's center of
gravity and balance your model properly before attempting fl ights.
34
1
/ –7 inches (140–178mm). We recommend starting
2
6 inches
(152.5mm)