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Ruler
SECTION 15: BALANCING THE P-51 RENO RACER EP
YOU'LL NEED THE FOLLOWING TOOLS AND SUPPLIES:
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Pencil
IMPORTANT
It is critical that your airplane be balanced correctly. Improper balance will cause your airplane to lose control and crash!
Center of Gravity Location:
2-3/8" back from the leading edge of the wing, at the fuselage sides.
WARNING
This location is recommended for initial test flying. The C.G. can be moved forward or aft up to 1/4", but it is not
recommended that the C.G. be located any farther back than 2-5/8".
IMPORTANT
As you move the C.G. further aft, the airplane will become more responsive, especially in pitch. Do not start to move the
C.G. back until you are comfortable with the flight characteristics of the airplane.
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Balance the P-51 Reno Racer EP with the flight battery
installed.
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Measure and draw two marks on the
top
of the wing, 2-3/8" back from the leading edge, at the fuselage sides.
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Turn the airplane upside down, place your fingers on the marks, and carefully lift the airplane. If the nose of the
airplane falls, the airplane is nose heavy. To correct this, move the flight battery back far enough to bring the airplane into
balance. If the tail of the airplane falls, the airplane is tail heavy. To correct this, move the flight battery forward enough to
bring the airplane into balance. When balanced correctly, the airplane should sit level or slightly nose down when you lift
it up with your fingers at the C.G. location.
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Once you have flown and become familiar with the flight characteristics of the airplane, the C.G. can be moved forward
or aft up to 1/4" in each direction to change the flight performance. Moving the C.G. back will cause the airplane to be more
responsive, but less stable. Moving the C.G. forward will cause the airplane to be less responsive, but more stable.
Do not fly the airplane beyond the recommended balance range or an uncontrollable crash could result!
SECTION 16: CONTROL THROWS
We recommend setting up the P-51 Reno Racer EP using the control throws listed below. These control throws are
suggested for initial test-flying because they will allow the airplane to fly smoother and make it easier to control.
TEST-FLYING
Ailerons:
3/16" Up
3/16" Down
Elevator:
1/4" Up
1/4" Down
Rudder:
1/2" Right
1/2" Left
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When measuring the control throws, measure from the widest point of the control surfaces.