You modified your crawler with a high-torque servo, aluminum rims, sticky tires, brushless motor and controller … and it performs worse. What?! You’ve spent all of this money and got all of the good stuff and now it’s not working right. How can this be? When this happens–and it happens a lot–some asking around will lead to the topic of a BEC or Battery Eliminator Circuit. Yes, your speed control has a built-in BEC, but most are not up to the task of keeping up with the demands of a modified crawler. Those high-torque servos turning heavy rims with tires that are grabbing the rocks all work together to draw a lot of juice, and when more power is needed than is being provided by a stock BEC, things go haywire. The answer is an aftermarket BEC. There are a few options, but a popular one is Castle Creations’ CC BEC. The device gets soldered into your main power source and the speed control receiver plug needs the power lead removed. Not that big of a deal, but not exactly instant gratification or the quick fix of a troubled crawler. And, while wiring in a BEC isn’t all that complicated, many people may not be interested in taking on some soldering and wiring. This is where the HeyOk No Brainer BEC comes in. The No Brainer BEC, unlike the Castle Creations unit, is plug and play. We liked the idea, so we put it to the test.
- Price: $25
- Amps: 5 amps
- Output: 5.5V
The No Brainer BEC is a small shrink-wrapped circuit board with two wire groups. One set of wires leads to a block of Deans Ultra Plugs that allow you BEC to be plugged in between the battery’s female output connector and the speed control’s input connectors. The second set of wires splits into a Y. The steering servo plugs into the Y-connector and the other lead of the Y plugs into the receiver. That’s all there is to it. You just need to plug it all together.
The standard output of the No Brainer BEC is 5.5V, but I ordered our test sample with a 6V output. HeyOk can build a No Brainer BEC to specific requests.
PERFORMANCE & FINAL ASSESSMENT
The beauty and purpose of the No Brainer BEC is that there isn’t much to talk about when it comes to the install. I chose to use it in my Axial SCX10 Dingo, and I was literally ready to go in a matter of a few minutes. I opened the receiver box, tucked in the BEC circuit board (it fit with room to spare), ran the wires out, plugged the connectors together–install done!
I was happy to see that HeyOk got the wires length right. Unlike a comp crawler, where electronics are little more likely to be bunched together, everything is spread out on my SCX10. Since I run a lightweight LiPo, it still sits in the stock position out back (for now), the steering servo is still on the front axle and the speed control and receiver are in the stock location forward of the transmission. The point is the wires are plenty long enough to work on the typical scaler.
Using the No Brainer BEC is pretty simply. I had one end plugged into the wires leading to the speed controller, so to use the BEC, I plugged the battery into the small block of Deans Ultra Plugs. This immediately sends power to the steering servo–even if the speed control if off. Once I flipped the on/off switch, the rest of the electronics powered up.
The fact that the steering servo is powered whenever the No Brainer BEC is plugged in (regardless if the speed control is on or off) may be the only potential downside of the No Brainer BEC. It may be a non-issue for most users of the product. It is just essentially to remember to unplug the battery from the BEC.
I have now run the No Brainer BEC for a few months and I am happy to report that I have experienced zero electronics issues. In my experience, a crawler without a BEC is essentially a problem waiting to happen. The HeyOk No Brainer BEC prevents frustrating problems from taking place and it does it the easiest way possible. It isn’t really intended or recommended for the hardcore comp types, but it’s perfect for someone looking for a quick and easy fix that works.