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  1. R

    High throttle whine.

    so my quad flies fine but it makes this wierd whineing noise when i give it alot of throttle... i tought it was a demaged motor but i replaced it + the props and the sound is still there. i did not have the sound before i chrashed lightly. Omnibus F4 Gemfan 5152 Tri-Blade Brotherhobby returner...