Cc bec?

Are they any benefits to running a bec heres what ive heard....1.when dragracing it lets the speed controller focus only on foward and rever.2.Mamba speed cont. work 2x as well with disabled b.e.c's .3.Mambas run coller with disabled b.e.c's.4.Anybody who genuinely fast ueses a b.e.c.OK guys help give me your feed back and experiences.

[Arct1k]

All my cars (10) use a castle bec.

Provides more power to the servos and reduces load on esc switching circuits.

I'd rather a bad servo took out a $15 bec than an expensive esc

[coolhandcountry]

Do you have to do anything special to the esc?
I mean some you had to cut the red wire and such.
Do you just leave the switch in off positions then?

[snellemin]

Disabling the BEC does decrease temps. But that is with ESC's that have Linear bec built in. Switching becs are more efficient thus less heat. I've been using Dimension engineering BECs on my smaller ESC, just so I can run higher voltages in my old dragracing days.

Using a external bec with the MMM is useless and won't gain you anything. Only time the BEC is used, is during steering and braking if a mechanical brake system is used. Braking is at the finished line and steering is at a minimum.

The extreme drag racers, go as far as removing the heatsink on the MMM. But never add a external BEC. That is just unnecessary weight.

With the Dimension Engineering BEC there is no need to cut/remove the red wire.

[BrianG]

Even a switching BEC produces heat though. If a switching BEC, being ~80% efficient, is passing 3A it will still dissipate ~3W of heat (assuming constant load). So, you can gain a little less temperature on the ESC. Of couse, if weight is the primary concern and/or the load is not high, it won't gain you nearly as much. I would say it's mostly needed for larger MT/truggies in normal bashing/racing conditions.

On the DE BECs, I don't like to use the built-in plugs because they can come loose. I just wire them like any other BEC.

[RC toy]

Originally Posted by snellemin

Using a external bec with the MMM is useless and won't gain you anything. Only time the BEC is used, is during steering and braking if a mechanical brake system is used. Braking is at the finished line and steering is at a minimum.

But what if I run one high torque, three micro servos and maybe even a 3W led on my bec? I don't think MMM would supply enough amps to feed all this...
Btw, is switching bec still only around 80% efficient?

[snellemin]

Originally Posted by RC toy

But what if I run one high torque, three micro servos and maybe even a 3W led on my bec? I don't think MMM would supply enough amps to feed all this...
Btw, is switching bec still only around 80% efficient?

I was referring to drag racing. Bashing and racing is a different situation and Castle offers two external becs for those that need them.

[TexasSP]

Originally Posted by RC toy

But what if I run one high torque, three micro servos and maybe even a 3W led on my bec? I don't think MMM would supply enough amps to feed all this...
Btw, is switching bec still only around 80% efficient?

If you are running that much, you might want to go with the pro version. Probably not completely necessary but worth it for the added assurance.