In this video, review the retrospective of the best moments of 2020, with the arrival of the silver plate of 100 thousand subscribers, the manufacture of the Stirling engine for the homemade cart, the best moments with the tractor with a fire-eating engine and also a replay of the mini battle tank going through obstacles.
► Buy your Mini War Tank on this page: bit.ly/2ZfFykx, using the code "Leandro" get 10% discount.
► For just USD 20.00 this other engine can be yours: bit.ly/3fkC59Q, get 10% discount using the code "Leandro".
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► WARNING:
- must be handled only in the presence of adults.
► Acknowledgments:
I want to leave my sincere thanks in this video to Elton Vergara Nunes ( / vergaranunes , who was one of the first subscribers to the channel, a great supporter and a motivator in the thesis of spreading the Stirling engine on RU-vid, to help students and lovers with mechanical creativity in their work.
Mini Tank of War: ► See a test of power, measures, and disassembled of the Tank of War: • Parte 2 - continuação ...
It is admirable its speed of 2500rpm walking on a flat track and much more impressive reaching peaks of 2900rpm in free rotation. Considering its low displacement of 3.62 cc, it still shows a good breath in the torque.
In addition to the test performed in the video, you can check the link above, where the tank pulled vertical 900 grams in weight and its rotation remained at 1500rpm. All this strength is admirable, the engine only starts to lose torque at speeds close to 600 rpm.
It does not require lubrication on the pistons, only after a long time, it is interesting to put grease on the joints.
► Mini tractor with fire-eating engine: learn more details in this video: • Mini trator com motor ...
► Why is it NOT considered a Stirling engine?
- Despite being an external combustion engine, the operation is in an open cycle, that is, the cylinder aspirates fire; different from the closed-loop Stirling.
► How does a fire-eating engine work? (also known as "Flammenfresser", "engine vacuum" or vacuum engine):
When the valve is opened, the piston is displaced towards the crankshaft axis, so that fire is sucked into the cylinder. Then the valve is closed, generating a vacuum by cooling the hot gases inside the cylinder. With this vacuum, the piston is pulled towards the valve. When the piston approaches the valve, the vacuum effect ends, and the combustion gases are expelled. The valve vane is movable, so that it allows gases to escape. Then the cycle is restarted.
► Conclusion:
The tractor has a nice design, works well with powdered graphite to lubricate the cylinder and without wind. I again inform you that it is a decorative object, it works with the reported restrictions, I do not recommend that it be tested on steep and steep slopes due to low engine torque. The differential is relatively fragile, with possible breakage if subjected to exaggeration.
I want to thank everyone who read this text description of this video, if you have any suggestions or even doubts, leave your comment.
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My blog:
manualdomotorstirling.blogspot...
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Leandro Wagner.
28 дек 2020
