Testing Multirotor motors and ESCs - RC Groups
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Nov 10, 2017, 10:59 AM
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Discussion

Testing Multirotor motors and ESCs


I am used to taking my ESC, a battery, and a servo tester, connecting these up to a brushless motor, and testing it.

When I do this with a multirotor ESC (Afro 20A) and motor (Quanum BE1806) the motor stutters and jerks. It doesn't spin up.

Does this setup have to be run through a flight controller board to test?
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Nov 10, 2017, 11:49 AM
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Ace12GA's Avatar
Sounds like your ESC timing is off. Is that ESC running SimonK or BLHeli?
Nov 10, 2017, 02:48 PM
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What voltage are you running your servo tester on? It probably needs 5V. The ESC should figure out that you are running PWM - I assume your servo tester is PWM.
Nov 10, 2017, 03:12 PM
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Quote:
Originally Posted by Volt_Ampere
What voltage are you running your servo tester on? It probably needs 5V. The ESC should figure out that you are running PWM - I assume your servo tester is PWM.
servo tester is pulling voltage from ESC.
Nov 10, 2017, 03:43 PM
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ESC probably needs separate power. I usually power ESC through lipo. And 5v to tester.
Nov 10, 2017, 04:35 PM
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Quote:
Originally Posted by voodoo614
ESC probably needs separate power. I usually power ESC through lipo. And 5v to tester.
The ESC is plugged into the lipo and will provide power to the servo tester whether I add a battery to the tester or not. It's basically this exact setup:

Brushless Motor Test (1 min 20 sec)
Nov 10, 2017, 07:31 PM
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Ok, I see. Your ESC have a BEC. This happened to me once. Make sure you have the servo tester turned all the way down. Let the ESC go through the boot sequence when you plug the lipo in. Then turn up the PWM.


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