Get Maximum Power for Your Steering Servo
High-Output BEC Installation
What’s a BEC, you ask? Quick history lesson: when electric RC cars really started to take off in the late 70s and early 80s, receivers were designed to operate on 6 volts via a receiver battery (typically four AA “dry cells” or a 5-cell NiCd battery). The 6-cell, 7.2 volt battery that powered your car could damage the receiver and servos if it powered them directly. And so, it was common for RC cars of the era to carry a separate 6-volt receiver battery along with the 7.2-volt “main battery.” The “battery eliminator circuit” (BEC) solved this problem by stepping down the voltage of the main battery to 6 volts. True to its name, the BEC eliminated the need for a separate receiver battery. Today, the BEC is incorporated into the speed control, to assure the receiver gets the same voltage no matter what battery you use in your vehicle.
The #2262 High-Output BEC supplies plenty of power for all your power-hungry accessories.OK, so why do we need a separate BEC? The more powerful the steering servo, the higher the current draw will be. Without the High-Output BEC, your servo may draw more power than the speed control is designed to deliver to the receiver, causing the receiver to glitch or “brown out.” The High-Output BEC makes certain your accessories and receiver always have full power, even when they're maxxed out. The #2262 High-Output BEC kit includes everything you need to install the #2260 BEC in a TRX-4. The BEC mounts on top of the receiver with a foam pad. Install it as shown in the instruction sheet. Place the BEC on the receiver as shown in the instructions, so it will fit under the new receiver box lid properly.
Apply the adhesive BEC pad
Mount the BEC onto the receiver
Receiver box coversThe receiver-box cover included with the BEC is taller than the stock part. Plug the BEC in per the instructions (the diagram shown here will also help). The speed control’s plug goes into the port on the top of the BEC (be sure to press it in all the way), and the BEC’s plug goes into the receiver’s channel-2 port. Thread the red and black wire harness through the box cover, then install the cover and wire clamp to seal it. A fresh o-ring and silicone grease are supplied in the kit.
Wiring diagram
Y harnessThe BEC’s male red plug goes into the speed control’s female plug—which in our case, is already being used by the LED lighting system. No problem—the BEC includes a Y-harness so both accessories can share the plug. That's all there is to it! Be sure to check out other popular TRX-4 accessory installations here.
