Stirling Engine Powered Tiny Model Working Mini Tractor
via
The innovative tractor design is equipped with a real micro-engine.The tractor has a pleasant design, works well with graphite powder for lubricating the cylinder and without the presence of wind. source/image(PrtSc): Manual do Motor Stirling It works with the reported restrictions, I do not recommend that it be tested on steep and steep slopes due to the low torque of the engine.
https://ift.tt/36vVDqa