ENJOMOR Mini Alpha Structure Hot-Air Stirling Engine Electric Generator 4000rpm Science Educational Mechanical Toy And Gift

Features:

• Strong power and high speed with T rocker and crank with an Alpha Structure.
• Moving parts engineered with rolling bearings for low friction coefficient.
• Cylinder made of brass, piston precision grinded SUJ-2 alloy steel.
• Wearproof engine parts fit tightly with high toughness.
• Connection fixed with bolts, copper washers for high temperatures resistance.
• High density aluminum alloy heat sink for higher heat exchange rate.
• Double-layer spring for shock absorption, smooth running.
• Full metal model, small size, compact structure, reliable performance.
• Assembled with over 150 small parts including 12 rolling bearings, 30 stainless steel bolts.
• Unfading surface treated by sand blasting oxid after CNC processing with 6061 aluminum alloy in appearance.

Instructions For Production And Maintenance:

1. Before using, stir the flywheel to check rotation smoothness. If necessary, remove the cylinder assembly to wipe the piston and cylinder with alcohol and apply graphite lubricant to the piston surface.
2. Pour 95% alcohol into alcohol lamp, ignite, and place it under the heating cylinder for 40s. Finally, stir the flywheel to rotate at high speed.

Notes:

• Never touch the heating cylinder, heat sink, or related high-temperature parts during operation.
• Only use general alcohol lamps. Avoid wind-proof lighters or heaters with Class E fire (over 500 ).
• Do not apply lubricants to the piston cylinder.
• Beginners are recommended to start with the engine base by hand for the first time.

Specifications:

• Material: Metal
• BoreStroke: 10mm10mm
• RPM: 3700-4000rpm
• Flywheel Diameter: 36mm
• Product Dimensions: 10.8 x 7 x 7.8cm
• Product Weight: 430g
• Package Dimensions: 20.5 x 11.5 x 18.5cm
• Package Weight: 560g
• Ages: 10+