Table of Contents
Advertisement
SECTION 15: BALANCING THE P-47 THUNDERBOLT EP ARF
Ruler
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:
2-3/4" - 3" (70mm-76mm) back from the leading edge of the wing, measured at the fuselage sides.
WARNING
This is the recommended C/G range.
FOR TEST-FLYING WE SUGGEST YOU START WITH THE C/G AT 2-3/4" (70mm), then move it farther back as you
become familiar with the flying characteristics of the airplane. It is not recommended that the C/G be located any farther
back than 3" (76mm).
IMPORTANT
Balance the P-47 Thunderbolt EP ARF with the battery installed and the airplane fully assembled.
Install the wing onto the fuselage.
Apply two short pieces of masking tape onto the top of the wing, 2-3/4" (70mm) back from the leading edge, measured at the
fuselage sides.
Turn the airplane upside down, place your fingers on the masking tape and carefully lift the airplane. If the nose of the airplane
falls, the airplane is nose heavy. To correct this, move the 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 battery forward far 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.
Once you have flown and become familiar with the flight characteristics of the airplane, the C/G can be moved fore or aft within
the C/G range 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 more stable, but less responsive.
DO NOT FLY THE AIRPLANE BEYOND THE RECOMMENDED BALANCE RANGE OR AN
SECTION 16: CONTROL THROWS
The control throws listed in this section are for both test-flying and general sport-flying. If you want the airplane to be more aerobatic
and responsive, we suggest increasing the control throws in small amounts (1/8" at a time) until you find your desired settings.
TEST-FLYING (LOW RATE)
Ailerons:
1/4" (6mm) Up & 1/4" (6mm) Down
Elevator:
5/8" (15mm) Up & 5/8" (15mm) Down
Rudder:
1/2" (12mm) Right & 1/2" (12mm) Left
IMPORTANT
The control throws are measured from the widest point of the control surfaces.
VERY IMPORTANT
After you are finished adjusting the pushrods and control throws, we strongly suggest cutting 1/4" lengths
of silicone tubing (fuel tubing) and sliding one piece over each clevis. The tubing will prevent any chance of the clevises opening
during flight.
YOU'LL NEED THE FOLLOWING TOOLS AND SUPPLIES:
UNCONTROLLABLE CRASH COULD RESULT!
Masking Tape
SPORT-FLYING (HIGH RATE)
Ailerons:
3/8" (10mm) Up & 3/8" (10mm) Down
Elevator:
7/8" (22mm) Up & 7/8" (22mm) Down
Rudder:
3/4" (19mm) Right & 3/4" (19mm) Left
27
Advertisement
Table of Contents
