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Propeller shaft and universal joint

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Engineering Explained

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30,545 görüntüleme • 5 ay önce •via X (Twitter)

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This is a bacterial flagellar motor … one of nature’s most sophisticated molecular machines - a rotary motor embedded in the cell membrane consisting of ~25-30 protein types totaling 20,000-50,000 atoms in a multi-part structure of rotor, stator, drive shaft, and propeller. Operating at 100-300 Hz (6,000-18,000 RPM) with some species reaching 1,700 Hz (~100,000 RPM) at nearly 100% efficiency, this nanoscale engine features rotor proteins FliG/FliM/FliN forming the C-ring, MotA/MotB stator complexes, FlgG rod protein drive shaft, FliC flagellin propeller filament, and FlgE hook proteins acting as a universal joint, all powered by proton or sodium flow across the membrane generating torque through conformational changes in the stator complexes.
0:18

This is a bacterial flagellar motor … one of nature’s most sophisticated molecular machines - a rotary motor embedded in the cell membrane consisting of ~25-30 protein types totaling 20,000-50,000 atoms in a multi-part structure of rotor, stator, drive shaft, and propeller. Operating at 100-300 Hz (6,000-18,000 RPM) with some species reaching 1,700 Hz (~100,000 RPM) at nearly 100% efficiency, this nanoscale engine features rotor proteins FliG/FliM/FliN forming the C-ring, MotA/MotB stator complexes, FlgG rod protein drive shaft, FliC flagellin propeller filament, and FlgE hook proteins acting as a universal joint, all powered by proton or sodium flow across the membrane generating torque through conformational changes in the stator complexes.

JJ

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I have almost finished fixing it Bought turbo Bought The Catalytic converter (dpf) what is remaining is the propeller shaft which needs buying(sourcing is actually the challenge... .... Here's the current state
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I have almost finished fixing it Bought turbo Bought The Catalytic converter (dpf) what is remaining is the propeller shaft which needs buying(sourcing is actually the challenge... .... Here's the current state

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He could activate his propeller and fly off an any moment
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He could activate his propeller and fly off an any moment

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Propeller Rat my beloved!
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Propeller Rat my beloved!

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the propeller noise 😭
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the propeller noise 😭

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Cable tie holding the propeller together 😳
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Cable tie holding the propeller together 😳

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Just spent 3 hours trying to fly this with the propeller upside down
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The engine drive shaft and rear axle assembly works after a rebuild.
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Forgot all and enjoy joint paper 😔
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Forgot all and enjoy joint paper 😔

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THIS JOINT SERVE BY WONYOUNG AND REI…
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THIS JOINT SERVE BY WONYOUNG AND REI…

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