MegaTech MTC 7805, Owner'S Manual

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Break-In - The first 20-40 minutes that a model truck engine runs, during which the metal parts establish the correct clear-
ances and “fit” with each other. Break-In actually means that the parts rub together (with lubrication from the fuel oil) and
wear away slightly. This critical phase determines how well your engine will run for the rest of its service life.
Camber - The angle between the vertical axis of the left wheel and the vertical axis of the right wheel as seen from the
front. If the top of the tires are a little father apart than the bottom of the tires, then the suspension has positive camber. If
the bottom of the tires are a little farther apart then the top, the suspension has negative camber. Your Tempest Gladiator
has the correct amount of positive camber is set at the factory.
Glow Plug - The small hex-shaped piece that screws into the top of the engine, with a little tip on the end. There is a very
small wire coil inside this plug, which glows red hot when you apply electric voltage. This glowing wire ignites the fuel/air
vapor inside the engine to make power. Once the engine is running, the heat from burning fuel keeps the wire glowing.
Glow Plug Igniter - A small battery with an electrical connector that provides the electricity to heat the wire inside the
glow plug. A small rechargeable glow igniter such as Megatech’s MegaNiter is safe and convenient, and can be left on the
truck during Break-In.
LED - Light Emitting Diode, a tiny “light bulb” . The LED’s on the transmitter glow when the batteries are fully charged.
Mixture - The amount of fuel vapor mixed with air that the engine burns. More fuel vapor in the air is a “ rich ” mixture,
less fuel vapor in the air is a “ lean ” mixture. The mixture is controlled by the High Speed Needle Valve at full throttle, and
the Low Speed Needle Valve at low-medium throttle.
Needle Valve - A thin needle-tipped screw in the carburetor that allows the liquid fuel to flow. Screwing the needle valve
closed allows less fuel into the carburetor, creating a “ lean ” mixture. Unscrewing the needle valve open allows more fuel
and creates a “ rich ” mixture.
Nitro - Nitro-Methane, an additive to racing fuel that increases the explosive power of the fuel when burned. Nitro is used
in high performance model engines, as well as in full-size dragsters and “Funny Cars”. 25% Nitro fuel (recommended) has
25% Nitro-Methane added to the fuel.
Receiver - The electronic device that picks up the radio signal from the transmitter and sends commands to the servos.
Ride Height - Also known as “Spring Pressure”, the amount of compression put on the suspension springs, which affects
how high the truck sits above the ground at rest. This affects how “hard” or “soft” the truck rides over bumpy roads.
Servos - Electric devices that turn the receiver’s commands into physical force to steer the wheels or move the carburetor.
Slide Carburetor - A carburetor that opens and closes by sliding a barrel-shaped insert with an air opening back and forth
in the main carburetor body.
Synthetic Lubricant - High-temperature, high- performance man-made lubrication oil that provides far greater engine
protection than natural oils. Only fuel using synthetic oil, such as Megatech’s High Velocity 25% Nitro racing fuel, is rec-
ommended for your Tempest Gladiator.
Toe-In - The angle between the horizontal axis of the front left wheel and the horizontal axis of the front right wheel when
viewed from above. If the front of the tires are a little closer together than the rear of the tires, the suspension has Toe-In . If
the rear of the tires are a little closer together than the front of the tires, the suspension has Toe-Out . Toe-In provides stabil-
ity, allowing the truck to go straight by itself. Toe-Out creates a very unstable condition, where the truck would swerve out
of control easily, just like driving a car in reverse. Your Tempest gladiator has the correct Toe-In is set at the factory, how-
ever the Toe-In setting is fully adjustable for advanced drivers.
Transmitter - The transmitter takes your steering and throttle/brake commands from the steering wheel and throttle trigger,
turns them into electronic signals, and sends these signals through the air to the receiver.
Glossary
Tempest Gladiator 2