Mamba max pro & BEC?

[punkfan]

I am going to change my original question, because yes i need a BEC. My question is why do they bother to add an internal bec to this thing even though it is basically worthless? After some searching it looks like it is only about 1.5 amps, meaning even a basher is more than likely going to need to add an external BEC. thanks for slapping me around eeepee

[SMR 510RR]

Well for a basher ran on 2s it would probably be ok, its when you up the voltage that the amperage really comes down to the point that it is useless.

[EeePee]

Originally Posted by punkfan

thanks for slapping me around eeepee

Always a pleasure.

Notice Castle also has a 1 cell lipo version of the MMP? No internal BEC included, saving weight. It's what's in my Losi.

[bigstu]

When I was running the MMP in my short course truck, the servo was quick but not much torque, and didn't pull much power. SO the Bec in th MMP worked just fine.
When I went to a high torque in the 4x4 SC10, I needed the BEC, because the servo would get it hot and pull the system in to shut down. Would accually kill the receiver and then come back on.. Not good during a race..

[JeremyH]

That's the reason I like the 1cell version of that ESC...

[Trubble]

Originally Posted by punkfan

My question is why do they bother to add an internal bec to this thing even though it is basically worthless?

Because it works.
Remember, this isn't a 'crawler only' ESC, lots more people than just you are using this thing for different vehicles. My AX-10 is the first vehicle in almost thirty years that I've added an external BEC to. Even my eMaxx runs dual steering servos just fine with it's internal BEC. So why would anyone outside of crawling need an external BEC? Most don't, and can make do with the onboard one just fine.

[benoj]

well put. i run a mmp in my stampede on 3s and the iternal bec never gave me problems even when i used it in my old losi cc on 3s it powered a towerpro servo just fine and last i knew atleast on 2s the bec was rated to 3A.

[punkfan]

Originally Posted by JeremyH

That's the reason I like the 1cell version of that ESC...

Wish I had known that they were the same minus the BEC. The one cell lable distracted me. Oh well no harm I bought a BEC at the same time just incase. So just a little solder and I am good to go.

As far as working fine I beg to differ. If it cant run my servo, and 5 leds at the same time it is a fail.

[JeremyH]

Originally Posted by punkfan

The one cell lable distracted me.

Yeah, it did the same for me as well. I think that ESC is merely named that because it can run off of one lipo cell. I believe there is some racing class (like a stock class) that has this limitation...

[SMR 510RR]

Originally Posted by punkfan

As far as working fine I beg to differ. If it cant run my servo, and 5 leds at the same time it is a fail.

Well besides the HH BR-XL you would run into this problem with just about any ESC.