What is UBEC                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       UBEC stands for Universal Battery Elimination Circuit. The UBEC is a small electronic device that is used to power the receivers/servos of a model if the ESC being used does not have a built in BEC, or if the BEC of the ESC is inadequate to power the number of servos being used. The UBEC is connected directly to the main battery pack of an electric model, the same as the ESC. In fact, the power input wires of the UBEC are often spliced into the power inputwires of the ESC. The power output wires of the UBEC have a receiver connector on them, and this is usually plugged into any open channel of the receiver. If the ESC being used has a built in BEC, that BEC must be disabled when using a UBEC. To disable the BEC of an ESC, simply disconnect the red wire on the receiver plug of the ESC.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          What is ESC ?                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      ESC stands for Electronic Speed Control. The ESC functions as the main control between the motor and receiver. It works like this: You send a signal to the receiver via your transmitter, the receiver then sends a signal to the ESC, and the ESC responds by providing the appropriate level of electric power to the motor (you might compare it to the carburetor of a gas engine). The battery pack plugs directly into the ESC, and the ESC powers the motor, and also the receiver and servos if it has a Battery Elimination Circuit (BEC). The BEC eliminates the need for a separate battery to power your receiver and servos. This sounds a bit complicated, but it's really pretty simple once you see the components properly connected. The ESC has a standard servo type plug that connects to channel 3 of the receiver, and there are 3 wires on the end of the ESC that connect to the 3 wires on the brushless motor. There are also 2 wires for the battery connection on the ESC.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             What is BEC                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               BEC stands for Battery Elimination Circuit. This is often a built in feature of the ESC which eliminates the need for a separate battery to power the receiver and servos. The BEC takes power from the main battery pack and reduces it to about 5 volts, and then sends it on to the receiver via the red wire of the ESC receiver plug. A BEC will commonly have a maximum amp rating of 1 to 3 amps, and this is usually stated somewhere on the ESC, or on the ESC instruction sheet.                                                                                                                                                      

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