Rotary engine (two) not tiangle (angle 720 ===> 2 combust)

Gallery
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11920×1080 45.8 KB

2

1
11333×750 78.5 KB

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3
31333×750 65.5 KB

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4
41333×750 69.7 KB

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5
51333×750 61.6 KB

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2
21333×750 64.6 KB