Vacuum Stirling Engine Generator Model 300-1000RPM Transport Helicopter Design Stirling Engine Motor Kit Science Metal Toy Decor Collection

Features:
Working Theory: burning alcohol lamp provides heat power to make the expansion of gas inside, then the gas molecular internal power increasing and working strongly to the flywheel.
With the help of the rotating wing, heat energy will convert into mechanical work.
Great educational toy, classroom or laboratory experimental teaching aids, cultivate children's interest in physics.
Perfect gift for your friends or families; also the helicopter design is a super addition for home decor.
The stirling engine model produced with quality material and fine workmanship to avoid rusting and prolong life.
Specifications:
Body material: anodized aluminum and stainless steel
Accessories material: stainless steel and copper
Cylinder material: tin bronze
Rotor material: stainless steel
Fuel: 95% alcohol
Cooling mode: forced air cooling
Working time: 20 minutes
Speed range: 300-1000RPM
Item size(L*W*H): 22 * 9.8 * 12.2cm / 8.66 * 3.86 * 4.8in (rotor unfold)
Item weight: 624g / 22oz
Package size(L*W*H): 21 * 11 * 14cm / 8.27 * 4.33 * 5.51in
Package weight: 795g / 28oz
Usage:
Placed the Stirling engine in a horizontal position, use your hand to toggle the flywheel to see if it is smooth.
Check if every sliding parts is clean.
Light the alcohol burner, toggle the flywheel after 2 minutes.
Note:
After using it please let the engine natural cool.
Do not touch the alcohol burner burned tube or the metal to avoid burns.
Rods at both ends of the moving joint parts need to regularly add oil lubrication.
Please be careful of the angular parts while the engine working.
Package List:
1 * helicopter stirling engine model
1 * tool kit
1 * extra rotor