Answer
BELT PULLEYS AND GEARS
皮帶滑輪和齒輪
WINDOW QUESTION · ANSWERBUILD CLUB
The question
WHICH TWO TRANSMISSION MECHANISMS CARRY THE MOTOR’S ROTATION TO THE GYMNAST?
這個模型用哪兩種傳動機構，把馬達的轉動送到體操選手？
Why it works
THE BELT TRANSFERS ROTATION TO THE GEARS, WHICH TURN THE GYMNAST’S BAR
皮帶先傳遞轉動，再由齒輪帶動橫桿讓選手翻轉
See it in action · THE FLIPPING LEGO GYMNAST
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