So being a relative newbie when looking at esc specs I've always paid particular attention as to what turn motor limit they have. One thing i never really considered was the bec specs.
Most of the servos i use are savox which led me to look into the brown out issues. I never realized they are so power hungry. I'd always looked at the torque and speed specs but the amp draw is never really advertised which led me to do some research on their website and some comparisons of the bec with the esc's I use which are; 1251 savox stall is 6v@3A draw with hobbywing justock bec 6v2A linear and a 1271 savox stall is 6v@5A draw! with orion r10 bec 5.75v3A linear. It seems the servos can draw more current than what the esc's bec's can supply!
So questions are; would I experience a brown out issue first or even worst case do damage to the esc's? Should I invest in using a glitch buster or external bec?
I haven't had any issues to date using flysky transmitter/ receiver which I'm currently updating to sanwa mt44. But the electronic side of things is something I want to run smoothly without any issues to let me concentrate more on vehicle setup.
Thanks for reading and any advice will be greatly appreciated.

Some sites have warning when purchasing some servos (specifically Savox):

https://www.amainhobbies.com/savox-s...1251mg/p183313



So yes, if your ESC has a BEC of less than 5A and you are using a known high draw servo, you'll want to use an external BEC or something similar.

I know a few guys that have used a Savox servo with Juststock esc's, Spektrum radio gear and have had brown outs unfortunately. They ended up getting a glitch buster and that seemed to help
I have Juststock esc's in 2 of my offroad buggies and never had a problem luckily. I am using Spektrum servo's and tx/rx in both of these so must draw a lot less power compared to the Savox

Be also aware that any binding in the steer mechanism and not right adjusted endpoints can also be the cause of such issues.

I have a video here showing how much current I was drawing from a Savox servo and comparing that to a comparable servo to give you an idea of what to expect:



More of my thoughts on selecting a decent servo here:
Which servo is right for me?

This is why long ago many years ago I stopped using esc bec and went to a ubec 25 amp and never looked back... I dont buy castle ubec they fail … hobby king has many

Thanks for the advice guys, appreciated.
So what I've gathered is brown outs tend to happen mostly with savox servo spektrum rx combos. Im better off using an external bec unless using something like the hobbywing xr10 pro g2 which has a 10A internal bec. Car maintenance is something I am privy to and never overlook, as well as end point adjustments.
Thanks billdelong for the links. It got me looking at the cheap servos from china thread. Im going to grab a couple and see how they go when I get my 482 clone rx. Sidenote, have you tried any of the cheaper esc's and any recommendations? Flycolor A-CW160003-A1A1 160A Partial Waterproof Brushless ESC, i was looking into this one.
One question still remains, have people seen failures of esc's due to low rating internal bec's or will the servo just lack in efficiency?

I have tried probably about a dozen brands of ESC's over the years, though I haven't tried Flycolor yet... the only budget brand that I have grown to trust is HobbyWing, they lack fancy features like no current limiter and no data logger, but you can't beat their quality for the price!

Pretty much every other budget brand has left me disappointed for one reason or another... when it comes to ESC's you get what you pay for... servos, chargers and motors are where you can get away with the no name brands with very little risk

Thanks mate. After my post I did start looking through the cheap esc's threads and had noticed you lent towards hobbywing. The flycolor does look strikingly similar to a xr10 pro but in saying that for the price could pick up a 10bl120 or max10. I know which way I'd tend to lean. Considering I already have the hw wifi module its a brand I'll be sticking with.