hello again ! ok what's the difference between a 380ph motor ( aerobird 3) and 480 and the last one 540
because am disapointed after replacing my 380ph for a 540 . ya am very sad because the 540 spin slower than my 380 and guys i need to learn !! i just find theses number writing on the motor its said: ot-rk-380ph-4540\57 , for me theses number mean nothing so lol thanks again to help me guys [

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