► The list of materials for this Stirling Alfa mini engine with energy generator is available in the text description of this video.
► For just US$ 20.00 this other engine can be yours: bit.ly/3fkC59Q, get 10% discount using the code "Leandro".
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► I would like to thank Marcos Valério Ciência ( / @marcosvaleriociencia1021 ) and Nélio Quintela ( / @nelioquintela ) in particular for their support of both in the construction of this project.
► The use of aluminum sheets as an interconnection duct between the two cylinders, made the project simple for maintenance, using the glue properly reduced the problems with air leakage.
► I had no problems with overheating, similar to the engine of the war tank ( • Mini tanque de guerra ... ), which is related to the small engine capacity (1.66 cm³ of swept volume) plus 1 cm³ of dead zone = total 2.66 cc.
► In the inaugural test, it reached peaks of 2100 rpm, however with great loss of torque at low speed, with air leakage in the head bolts, which joins the crankshaft support. With the repairs carried out, the engine reached 2500 rpm in peaks and a good torque improvement.
► In this first test with the generator, I obtained the following results in electrical power:
4 leds - 1600 rpm - 6.52 V x 0.016 A = 0.11 Watts
MATERIAL LIST:
- 1 3 ml glass syringe;
- 1 test tube with 12 mm outside diameter;
- 1 2.5 mm aluminum skewer and another 4.5 mm thick, to make the crankshaft support and the 3 headstock bars;
- 2 aluminum taped flywheels, each 3 mm thick and 39 mm in diameter, or other similar material;
- 5 6 mm light wire connectors, also known as "union or terminal". Found in stores selling residential electrical equipment;
- 1 tappet holder to make the crankshaft bearings. The set can be replaced by an electric motor;
- 1 2 mm bicycle radius in STAINLESS, to make the two connecting rods;
- grease, durepox glue, instant glue, high temperature silicone glue, available at auto parts stores;
- 7 or more screws;
- a small silicone tube, to attach the connecting rods to the shaft;
This project may require different materials, depending on the material available to the builder.
ENGINE FEATURES:
- Hot and cold piston stroke: 13 mm (1.3 cm);
- Outside diameter of the hot and cold cylinder: 11.5 mm (1.15 cm);
- Length of the hot cylinder: 20 mm (2 cm);
- Cold cylinder length: 36 mm (3.6 cm);
- Length of the test tube: 31 mm (3.1 cm);
- Internal diameter of the test tube: 11 mm (1.1 cm);
- Outside diameter of the test tube: 12 mm (1.2 cm);
- Hot piston length: 43 mm (4.3 cm);
- Cold piston length: 20 mm (2 cm);
- Outside diameter of the hot and cold piston: 9 mm (0.9 cm);
- Center distance between the two cylinders: 38 mm (3.8 cm);
- Length between the crankshaft axis, up to the central duct bar that connects the two cylinders: 100 mm (10 cm);
- Length of the connecting rod of the hot piston: 70 mm (7 cm);
- Cold piston connecting rod length: 75 mm (7.5 cm);
- The two connecting rods are 2 mm in diameter in stainless steel;
- The crankshaft shaft is 2 mm in diameter, stainless steel bicycle radius;
- 2 aluminum steering wheels each 3 mm thick and 39 mm in diameter;
- thicknesses of aluminum bars are 2.5 mm and 4.5 mm;
- Peak engine speed: 2530 rpm;
- Constant engine speed: 2240 rpm;
- Heat source used: combustion of alcohol 92.8 INPM;
REQUIRED TOOLS:
- 1 drill;
- 1 nini grinder, with cutting disk and another diamond flexible disk;
- 1 drill bit of 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4.5 mm, 6 mm and 12 mm;
- 1 saw to cut iron;
- 1 walrus;
- 1 screwdrivers, philips, pointed pliers and a normal, hammer, spanner;
- 1 plastic ruler or caliper;
- 1 grease and common oil;
- 1 durepox glue, silicone and instant glue;
- 1 pen;
- 1 marking nail;
- 1 stylus;
- 1 small file;
- 1 a large file;
- 1 sandpaper to remove the thread from the syringe cut;
Music provided by NoCopyrightSounds:
Tobu - Good Times [NCS Release] - • Video
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Defqwop - Awakening [NCS Release] - • Defqwop - Awakening | ...
Tobu - Hope [NCS Release] - • Video
My blog:
manualdomotorstirling.blogspot...
My Facebook:
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I thank everyone who follows this path, attentively.
Leandro Wagner.