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Thread: Electronic Problems? You probably need an External BEC

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Old 02-12-2019, 03:34 PM   #41
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Default Re: Electronic Problems? You probably need an External BEC

I am having trouble with my little 10a brushed ESC. I waterproofed it and it hasn't gotten wet yet so that problem is ruled out. When you give it low throttle it starts fine and then it kind of jumps forward for less than a second. And in reverse, it just goes and then cuts out every 2 seconds. I added a capacitor to the motor and the ESC works fine otherwise. I have also checked the throttle trim and receiver too.
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Old 02-17-2019, 12:29 PM   #42
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Default Re: Electronic Problems? You probably need an External BEC

Good information.
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Old 03-21-2019, 08:05 AM   #43
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Default Re: Electronic Problems? You probably need an External BEC

I have Mamba X and Sav÷x SB2290SG servo (694.4oz @ 7.4v). Is Mamba's internal BEC enough for this monster servo or should I use external BEC ?
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Old 03-21-2019, 10:38 AM   #44
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Default Re: Electronic Problems? You probably need an External BEC

MambaX bec: 8a
2290sg at stall: 9.2a

On paper, the MambaX is not quite enough, but in the real world, it should be fine. I ran a 2290 from a wp1080's 3a bec for 6 months or better and never noticed any stalling, glitching, or brown outs. It does have noticeably more torque now that I have it powered from a CC 10a bec. I'd run it.
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Old 03-21-2019, 11:02 AM   #45
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Lightbulb Re: Electronic Problems? You probably need an External BEC

Thanks! I had 1080+bec earlier. I can use that bec if needed.
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Old 05-06-2019, 12:02 AM   #46
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Default Re: Electronic Problems? You probably need an External BEC

I've attached 3amp bec to my rx8 which works wonder with flysky nb4 and receiver on trx4 w/ roc412, but on my ezrun 4274 summit with trx radio and receiver it isn't working. It didnt even bind when I plug the main esc wires to the receiver and it only did when I plug the bec wires into main esc which usually is the 3rd from bottom due to summit dual steering servos. Was able to bind and power come live as said when only bec wire is plugged in. Any help will be appreciated.

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