What is a BEC receiver?

[oIIIIIo]

So what the heck is a BEC receiver? My understanding is that a BEC is an ESC feature that provides power to the receiver so you don't have to run a seperate rx pack. So why does Traxxas make a BEC receiver (2015) and a non-BEC receiver (2019)? What exactly is the difference, and when would you use a BEC receiver?

 

[microgoat]

Not all receivers have the extra circuitry necessary to direct power from ch2 to the other channels. Them that do, are called BEC receivers. Non-BEC receivers typically get used in nitro vehicles. They're a couple cents cheaper to make.

 

[oIIIIIo]

I suspected that it might have had something to do with the difference between electrics with ESCs and either nitros or older MSCs, but the Traxxas T-Maxx (nitro) and the E-Maxx (electric) both use the same non-BEC 2215 receiver. This is the one I use in my TLT and it has no problem running dual Hitec 645 servos. So this theory doesn't seem to hold water. Any other ideas?

 

[microgoat]

The 2215 does have a BEC, otherwise it wouldn't work without an RX pack in the E-Maxx. They use it in the T-Maxx as well because that's cheaper than making two 3-channel receivers.

 

[supercrawlerfreak]

BEC stands for battery eliminator curcuite correct?:mrgreen:

 

[eric113]

BEC stands for battery eliminator curcuite correct?:mrgreen:

yes

 

[supercrawlerfreak]

ok so question answered the bec eliminates the battery circuit

 

[thatguy]

it allows the receiver to draw power from a main batery pack,eliminating the need for a reciver battery. has a curciut to cut down the voltage of the main pack to 6.0 volts so the extra weight of a reciver pack and the size are of no problem.is used allot with mscs.escs backfeed the proper voltage to the reciver and work with both

 

[oIIIIIo]

According to the Traxxas site, the 2015 is a "Receiver, 2-Channel 27MHz, with BEC (for use with mechanical speed control)" and the 2019 is a "Receiver, 2-Channel 27MHz, without BEC (for use with electronic speed control)". Tower lists the 2215 as a "27mHz Three Channel AM Receiver Without BEC for the Nitro T-Maxx (TRAC54**) and the E-Maxx (TRAC64**) Ready-To-Run-Kits."

Therefore, the only vehicles that require a BEC receiver are those with a mechanical speed control and no seperate receiver pack. The receiver has the BEC circuitry to regulate the 7.2v main pack down to 5 or 6v to run the servos. Vehicles with an electronic speed control with BEC do not require a BEC receiver because the ESC provides the regulated power to the RX, nor do nitro vehicles because they use a dedicated receiver battery.

 

[microgoat]

I stand corrected.

 

[oIIIIIo]

I re-read my last post and my response sounded like I was an a$$. I removed the non-relative comments. Sorry if it was offensive.

 

[microgoat]

No offense taken, I gave you some info that turned out to be BS. BS needs to be corrected, but you should write this down, 'cuz it's the first time I've been proven wrong :lol: