2WDTwo wheel drive. With a 2WD car or truck, generally speaking, only the rear wheels are driven by the motor. This makes them much simpler to build and maintain, but these can be harder to drive.
4WDFour wheel drive. 4WD cars and trucks have a ton of traction because all 4-wheels are digging in and providing grip. When 2WD cars and trucks might be slipping and sliding around on a track, 4WDs will hook-up and go.
Brushed MotorThe most common motor included with RTRs. They need to be cleaned and maintained and will eventually wear out, unlike brushless motors.
Brushless MotorHigh-performance electric motors that are much more efficient than brushed motors and have no designed wear components. More power, more speed, less maintenance.
BuggyAn off-road car. These were originally designed after dune buggies, but have evolved to look very different now. There are both 2WD and 4WD buggies. The ECX™ Boost™ buggy is a good examples of this vehicle.
CapacityThe maximum amount of energy, rated in milliamp hours (mAh) a battery can store. A battery with a higher the capacity will let you drive longer between recharges.
ESCStands for Electronic Speed Control. This is the device that connects to your receiver, battery and motor and sends power to your electronics. The ESC is what controls how fast or slow your motor goes based on how much throttle you give your car or truck through the transmitter. ESCs are sometimes called Speedos.
KitAn RC car or truck that you need to put together yourself. You'll also need to purchase your electronics separately with a kit.
KvA rating of performance for brushless motors. The easiest way to remember it is that the higher the Kv rating, the faster a motor will be, so a 5800Kv motor would be a lot faster than a 3800Kv motor.
LiPoAbbreviation for Lithium Polymer. LiPo batteries are very popular types RC battery packs. Unlike other types of batteries LiPos have more rip and voltage; are lighter and will give you a performance advantage. You can also run a LiPo battery multiple times in a day without hurting it. You'll pay a little more for LiPo up front, but you'll be money ahead compared to NiMH and NiCad packs.
NiCd/NiCadAn abbreviation for Nickel Cadmium, a chemical compound used in rechargeable batteries. NiCd batteries have mostly gone the way of the dinosaur due to their poor runtime, poor life and reduced voltage.
NiMHAn abbreviation for Nickel Metal Hydride, a chemical compound used in rechargeable batteries. NiMH packs perform much better than NiCd packs, but still lose out to LiPo. NiMH packs have better voltage, runtime and life than NiCd, but don't match LiPo performance.
Oil-Filled ShockA shock that has oil inside the body to smooth out the suspension of your car or truck. You can change how fast or slow a shock is compressed by changing the shock oil or pistons.
ReceiverThis is what receives the signals from your transmitter and sends information to your ESC and servo. If you have a 27mHz or 75mHz receiver, your frequency crystal plugs into the receiver too.
Receiver CrystalA small chip that plugs into your receiver that sets the specific frequency that you are broadcasting on. You'll need to make sure that you have a matching transmitter crystal to the receiver crystal.
RTRAbbreviation for Ready-To-Run. RTR cars and trucks come out-of-the-box completely pre-assembled for you, the electronics are installed and the bodies are painted. Some RTRs, like the ECX cars and trucks, even include battery chargers and battery packs. If you want to get started in RC, RTR vehicles are the easiest way to do it.
ServoThis is what steers your car or truck. If you have a nitro or gas-powered car or truck, you'll have a second servo to open and close the throttle and apply the brakes. You can get either analog or digital servos. Analog servos are less expensive, but don't come back to center well or have the best performance. Digital servos are a lot more precise, faster and stronger, but cost more.
Short Course Truck (SCT)Off-road racing trucks are based on the real trucks you can see racing in series like the Lucas Oil Series. Short course trucks are longer than stadium trucks, have bodies that extend over and cover the wheels and tires, and have skinnier tires that reduce your traction. You can get either 2WD or 4WD short course trucks. The Torment™ short course truck is a good examples of this vehicle.
SpektrumThe original 2.4GHz RC system. Spektrum™ DSM®/DSM2® technology makes it possible for you and up to 79 of your closest friends drive all at the same time. With Spektrum technology, you don't need to worry about interference, frequency conflicts or poking your eye out with a long, fishing pole-style antenna.
Stadium TruckAn off-road racing truck that combines buggies and short course trucks. Stadium trucks have an open wheel design like buggies, use wider tires than short course trucks and have killer performance. Before SCTs came out, truck racing meant you were racing a stadium truck. The ECX Circuit™ stadium trucks is a good example of this kind of vehicle.
TransmitterRemotes are for TVs, transmitters are what you use in RC. The transmitter is what you hold while you're driving your car or truck. There are two basic transmitter types: the first is the wheel radio, or pistol grip radio, which is the most popular type. With a wheel radio, you have a wheel on the face for your steering input and a trigger to control throttle. The other type is a stick radio, which has 2-sticks to control throttle and steering. The left stick controls throttle and brake action while the right stick controls steering.
Turn (A.K.A. Wind)The more turns a motor has (the higher the number), the slower the motor will be. The lower the turn of the motor, the faster it will be. For example, a 10.5-turn brushless motor will be faster than a 17.5-turn brushless motor, or a 15-turn brushed motor will be faster than a 20-turn brushed. You will also see turn represented just by a T, so 15T is faster than 20T.