#stirling #engine #model #tank #helicopter #perpetualmotion #physics#law #fun #stirlingkit #machine

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8 months ago 00:00:15 1

#stirling #engine #model #tank #helicopter #perpetualmotion #physics#law #fun #stirlingkit #machine

1 year ago 00:00:16 1

Stirling Engine Mini Helicopter #viralvideo #viralshorts #viral #perpetualmotion #physics #law #fun

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