# ESC Calibration/motor Test

**URL:** <https://discuss.cubepilot.org/t/esc-calibration-motor-test/17731>\
**Category:** Mission Planner\
**Created:** [22 July 2026 23:41 UTC](https://discuss.cubepilot.org/t/esc-calibration-motor-test/17731 "2026-07-22T23:41:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![NOLAIR](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/nolair/32/9770_2.png) [@NOLAIR](https://discuss.cubepilot.org/u/NOLAIR)\
**Post date:** [22 July 2026 23:41 UTC](https://discuss.cubepilot.org/t/esc-calibration-motor-test/17731/1 "2026-07-22T23:41:37Z")

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Hi everyone,

I am having some issues after calibration of new Normal ESC , during motor Test 7% throttle can only spin motor 1, before motor 2,3,4 can spin I have to raise throttle to 14% . When throttle is raise to 14% all mot spins but Motor1 is much faster than 2,3,4 .

I have changed the brushless motor same thing happened, I switched motor1 ESC for motor4 it start spin at 7% throttle.

Servo Max , Min, trim are all Normal

I think it would be risk building the drone like that when motor1 is faster and start spinning at 7% throttle while others can’t

If you have encountered similar problem and have the solution pls leave a comment

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**Author:** ![xfacta](https://discuss.cubepilot.org/letter_avatar_proxy/v4/letter/x/5f8ce5/32.png) [@xfacta](https://discuss.cubepilot.org/u/xfacta)\
**Post date:** [30 July 2026 22:48 UTC](https://discuss.cubepilot.org/t/esc-calibration-motor-test/17731/2 "2026-07-30T22:48:22Z")

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Use this ESC calibration method:

> **[Electronic Speed Controller (ESC) Calibration — Copter documentation](https://ardupilot.org/copter/docs/esc-calibration.html#semi-automatic-esc-by-esc-calibration)**

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<div class="post-metadata">

**Author:** ![NOLAIR](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/nolair/32/9770_2.png) [@NOLAIR](https://discuss.cubepilot.org/u/NOLAIR)\
**Post date:** [11 August 2026 05:04 UTC](https://discuss.cubepilot.org/t/esc-calibration-motor-test/17731/3 "2026-08-11T05:04:51Z")

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I’ve done calibration with the herelink Transmitter held up the. Beep beep throttle down. It worked