# Anim Dynamics makes mesh insanely small?

**URL:** <https://forums.unrealengine.com/t/anim-dynamics-makes-mesh-insanely-small/474394>\
**Category:** Character & Animation\
**Tags:** unreal-engine, dynamic, question\
**Created:** [November 13, 2020, 1:00am UTC](https://forums.unrealengine.com/t/anim-dynamics-makes-mesh-insanely-small/474394 "2020-11-13T01:00:18Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Rasmus\_Hauschild](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Rasmus\_Hauschild](https://forums.unrealengine.com/u/Rasmus_Hauschild)\
**Post date:** [November 13, 2020, 1:00am UTC](https://forums.unrealengine.com/t/anim-dynamics-makes-mesh-insanely-small/474394/1 "2020-11-13T01:00:18Z")

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Hi,  
I am trying to add dynamic animation to my character’s tail, but as soon as I enable the anim dynamics node in the anim graph, the tail becomes extremely thin in the x and z direction (see image 1), while the y-direction seems unaffected.  
I had a similar problem when setting up an IK foot system for the character, where I had to scale the effector location down 100 times, so I imagine this might be similar, but I can’t for the life of me figure out how. The model is made in blender 2.9 and exported using the recommending settings - scaled applied and everything.  
The aim dynamics node is set up as shown in image 2.

Any assistance would be greatly appreciated!

 ![321865-image-1.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/d/b/3dbd6675fb61423354e82b4ea8de3d5d97c16361.png)

 ![321866-image-2.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/f/a/ffa84f7d1e7aa94f63ba39d3ae4f2c96b51af0d2.png)

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**Author:** ![Chahorain](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Chahorain](https://forums.unrealengine.com/u/Chahorain)\
**Post date:** [March 4, 2022, 4:06am UTC](https://forums.unrealengine.com/t/anim-dynamics-makes-mesh-insanely-small/474394/2 "2022-03-04T04:06:26Z")

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Did you figure it out? i have the same problem now

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**Author:** ![Fofuxo](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/fofuxo/32/928440_2.png) [@Fofuxo](https://forums.unrealengine.com/u/Fofuxo)\
**Post date:** [July 1, 2022, 10:28pm UTC](https://forums.unrealengine.com/t/anim-dynamics-makes-mesh-insanely-small/474394/3 "2022-07-01T22:28:35Z")

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Hey! Try to use Kawaii Physics instead. I was with this problem too…

> <https://github.com/pafuhana1213/KawaiiPhysics/blob/master/README_en.md>

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**Author:** ![SasMatresss](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@SasMatresss](https://forums.unrealengine.com/u/SasMatresss)\
**Post date:** [September 16, 2024, 11:39am UTC](https://forums.unrealengine.com/t/anim-dynamics-makes-mesh-insanely-small/474394/4 "2024-09-16T11:39:49Z")

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if anyone need just change simulation space like bone relative or root