model and still have solid control. Have an assistant stand by the
airplane to watch the action of the control surfaces, while you walk
slowly away from the model, constantly working the controls as
you go. Your assistant should signal to you if the control surfaces
become erratic. If all is well out to 100 ft. or further, repeat the test
with the engine running, with the assistant holding the airplane. If
the control surfaces do not respond correctly, do not fly! Find and
correct the problem first.
Look for loose servo connections or
broken wires, corroded wires, poor solder joints in your battery
pack, or a defective cell in the battery pack, or a damaged
receiver crystal from a previous crash. If you can't find and fix the
problem, send the radio in to an approved service center.
NEVER FLY WITH A RADIO SYSTEM THAT ISN'T WORKING
100% CORRECTLY. THE PROBLEM WON'T GET BETTER IN
THE AIR, IT WILL GET WORSE!
RADIO INSTALLATION, PART VI: Set The Control Throws
Use a ruler to accurately measure and adjust the travel of each
control surface to the amounts shown below. Keep in mind that
these settings are meant to serve as a starting point. As you gain
experience flying your MAYHEM, you may want to adjust the
throws to suit your flying style. All measurements should be taken
at the widest part of the elevators, ailerons, and rudder.
Low Rate
High 3D Rate
Ailerons
1" up
2" up
1" down
2" down
-20% expo
-70% expo
Elevator
1" up
2" up
1" down
2" down
-20% expo
-50% expo
Rudder
2" right
3"-4" right
2" left
3"-4" left
-20% expo
-70% expo
Note: High Rate 3D Control Throws
The 3D control throws are only meant for extreme aerobatics.
They are not meant for normal flying. You should be competent
and comfortable flying your MAYHEM with normal control throws
before attempting 3D rates.
FUEL TANK INSTALLATION
❑
1) Assemble the fuel tank as shown. We recommend that you
plumb your tank with a standard 2 tube setup. One of the tubes is
the "vent" line, through which you will fuel and defuel the tank. The
other tube is the "fuel feed" line to the carburetor.
Note that the rubber stopper for the tank has two holes that go all
the way through it. Use these holes for the aluminum vent and fuel
feed tubes. Use the shortest of the three supplied aluminum tubes
secured the end of the antenna under the stabilizer, using a piece
of small fuel tubing, a small rubber band, and the head of the “T-
pin” glued into the fudselage side, as shown in the second photo.
SWITCH:
The radio on/off switch should be mounted on the
fuselage side opposite the engine exhaust.
Cut a small
rectangular opening in the fuselage side for the switch toggle to
poke through, and drill two small holes for the switch mounting
bolts.
RADIO INSTALLATION, PART V: Final Safety Inspection
1) Take the time to fit each R/C link with a short length of silicone
fuel tubing to keep the links firmly closed. This common safety
practice has saved a lot of models!
2) Make sure that you have secured the servo arms to each servo
with the retaining screws.
3) Turn the radio on and check the functions of all the controls.
Make sure they are moving in the right direction! Thousands of
R/C airplanes have crashed over the years because the servos
were moving the wrong way! Also make sure all the servos are
centered and working perfectly, without any binding. Correct any
such problems now, before proceeding.
4) Be sure to range check your radio installation on the ground,
before you attempt to fly your MAYHEM for the first time. With the
transmitter antenna collapsed, and the receiver and transmitter
turned on, you should be able to walk at least 100 ft. away from the
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