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In this video a power comparison is presented between the mini tank of war with a homemade Stirling engine, modified to be a cart and showing its limitations. ► If you are interested in purchasing your battle tank, check this page: bit.ly/2ZfFykx, using the code "Leandro" get 10% discount.
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In this mini Stirling engine of the Alpha configuration, I installed the steel wool in the duct that connects the two cylinders, this steel wool has the function of recycling part of the heat that would be rejected in the cold cylinder, so known as a regenerator.
With this heat regeneration system, the engine ran at 2300 rpm free rotation. In the power tests, it showed a 25% gain in electricity, reaching 0.240 Watts where this mini war tank reached 0.255 Watts.
I am extremely satisfied with the result of this engine, with only 10% to reach the same power as the tank engine and with the advantage of a smaller and lighter design.
Unlike all other glass piston engines, this was not used polished silicone on the pistons or powdered graphite. But I confirmed a suspicion, when storing the engine for a certain time, estimated at 30 days, a paste forms between the piston and the cylinder on the cold side of the engine. This problem is easily solved by applying powdered graphite on the piston, and then polishing with paper towels.
► Conclusion: this was the first cart I manufactured, also being its first public presentation. It is possible to notice that this was not the proper way using a steering wheel as wheels for the cart, where the engine speed is exaggeratedly limited by the low speed of the cart, compromising the engine to deliver maximum power.
I intend to make a reduction box and the rear axle with a wider width, where I believe to obtain a significant improvement in the speed of the cart.
I apologize for the low frequency of new videos, but each experiment requires hundreds of hours of work. I return to point out, that I will still repay you with dozens of interesting videos that are scheduled.
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Thank you for your attention and see you in the next video.
Leandro Wagner.