This is Engine 2, my first functional Stirling engine design. You can see a larger photo and a short clip of it running on solar power: Engine 2
Engine 3d is my next design. It’s larger and more powerful. More photos and a clip of it running: Engine 3d
Maker Faire 2008 configuration Another photo and a video of it running
This photo shows Engine 3F without insulation. I normally operate this engine inverted so the hot end of the displacer (the top of the black cylinder) is normally at the bottom, just above a heat source.