# Motors spin slowly while disarmed

**URL:** <https://discuss.bluerobotics.com/t/motors-spin-slowly-while-disarmed/9451>\
**Category:** Modifications\
**Created:** [April 13, 2021, 12:01am UTC](https://discuss.bluerobotics.com/t/motors-spin-slowly-while-disarmed/9451 "2021-04-13T00:01:24Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![EliotBR](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/eliotbr/32/6937_2.png) [@EliotBR](https://discuss.bluerobotics.com/u/EliotBR)\
**Post date:** [September 30, 2025, 3:07pm UTC](https://discuss.bluerobotics.com/t/motors-spin-slowly-while-disarmed/9451/7 "2025-09-30T15:07:11Z")

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I just came across this while looking for something else, and thought I’d follow up that this is a solved problem now. Motor trim is available in ArduSub \>= 4.5.3, by

> [@How to change neutral set point for motors](https://discuss.bluerobotics.com/t/how-to-change-neutral-set-point-for-motors/20987/3):
>
> … setting the [`SERVOn_TRIM`](https://ardupilot.org/sub/docs/parameters.html#servo1-trim-trim-pwm) parameters for your motor pins …, with [`MOT_PWM_TYPE`](https://ardupilot.org/sub/docs/parameters-Sub-stable-V4.5.3.html#mot-pwm-type-output-pwm-type) set to `PWMAngle (9)`.

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