Gears are jumpy

Im trying to make some gears for my helicopter and i wanted them to be able to go in and out, i got everything to work but when its on the ground with weight on the helicopter then it starts jumping and becomes unstable. It works fine while flying and i can put the gear up and its perfect but when im on the ground with weight on it it just jumps around. i feel like its a mass issue but i not sure, i havent worked with these before.


forgot to say when im on the ground and the RPM is at 100 its stable and doesnt jump at all

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Click on the mesh part of the helicopter and go to properties and find Massless and check it and see if that helps.


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all the meshes have to have mass as thats how the heli was made, if the entire thing is massless then it would just float upwards

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