Butterfly Lego Vacuum Engine Tutorial!

Описание

In this new tutorial, I build the the long overdue Butterfly Lego Vacuum Engine (BLVE)! This unique yet simple engine has only a piston- no valves- as the piston itself performs the action of sealing and letting air back into the cylinder.
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My channel: https://youtube.com/c/KFPlusLegoMastery
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