Product Review

This engine is driven by the temperature differential between the top and bottom plates. To create enough temperature differential, simply put it on a cup of hot water. The rotation speed depends on the temperature differential: the higher, the faster.

When in good condition, that is, after working for a while and being lubricated, it can reach a speed around 220-250 RPM driven by boiling water. Please refer to the video attached to learn how to operate and lubricate.

This product complies with the applicable regulations and standards under CPSIA and any other acts enforced by CPSC. It passed ASTM-F963 Standard Customer Safety Specification For Toy Safety Toxic Elements Test/Flammability Test/Physical and Mechanical Test.

Please note that we detached the flywheel from the stand to ensure its safety in shipping. It's easy to put back.

What's it for:
*Funny/educational gift
*Kids' science project
*Hobby
*Physics/mechanics learning
*Put on your table
*Coffee Timer
*Start a conversation
*Salute the First Industrial Revolution

Features:
Brand: DjuiinoStar
Model: DLTD-303
Speed: 60-220 RPM
Operation temperature differential: about 54-63°F
Continuous rotation time on a cup of boiling water: about 30-50 minutes
Overall size: 4.06x4.06x4.92in(L/W/H)
Size of flywheel: 3.43x0.23in(Diameter/Thickness)
Inner diameter of the power cylinder: 0.61in
Net Weight: 0.52lb

Packing List:
*Engine x1
*User Manual x1