# Pre tuning steps

**URL:** <https://discuss.px4.io/t/pre-tuning-steps/27985>\
**Category:** PX4 Autopilot\
**Created:** [June 21, 2022, 7:05am UTC](https://discuss.px4.io/t/pre-tuning-steps/27985 "2022-06-21T07:05:21Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Aman\_Chandak](https://discuss.px4.io/user_avatar/discuss.px4.io/aman_chandak/32/10266_2.png) [@Aman\_Chandak](https://discuss.px4.io/u/Aman_Chandak)\
**Post date:** [June 21, 2022, 7:05am UTC](https://discuss.px4.io/t/pre-tuning-steps/27985/1 "2022-06-21T07:05:22Z")

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Hi,  
I was performing pre tuning steps on Co-axial Quad frame and it resulted in crash. When it was given full roll input then it oscillated and crashed.

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<div class="post-metadata">

**Author:** ![Aman\_Chandak](https://discuss.px4.io/user_avatar/discuss.px4.io/aman_chandak/32/10266_2.png) [@Aman\_Chandak](https://discuss.px4.io/u/Aman_Chandak)\
**Post date:** [June 21, 2022, 7:08am UTC](https://discuss.px4.io/t/pre-tuning-steps/27985/2 "2022-06-21T07:08:36Z")

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Here is the log file for the same: [https://logs.px4.io/plot\_app?log=84602f4a-1c4b-47c1-bad3-cf193c7731e0](https://logs.px4.io/plot_app?log=84602f4a-1c4b-47c1-bad3-cf193c7731e0)