Build update

[Stirling_rookie]

I am very near completion of my Gamma stirling engine im building for my national diploma project, so i thought id post some pictures of the progress here as i found this forum very useful when designing my engine.

The power piston diameter is 25mm and it also has a stroke of 25mm, the displacer piston has a diameter of 30mm and a stroke of 25mm, this gives a displacer/power pistion swept volume ratio of 1.43:1. All the moving joints and the main shaft run in shielded bearings to reduce friction. The only component left to fabricate is the flywheel which im hoping to make within a week.

NOTE: In the picture the crank on the displacer side is actually the power pistons crank, I only placed it there before i make the flywheel to test if the engine was operating correctly by placing the power piston in its cylinder freely, heating the hot cap and moving the displacer to see if the power piston moves out and in. It seemed to operate correctly so im now confident that the engine will run.

Constructive criticism welcome.

[jimlarsen]

I think it looks awesome.

[Junkie]

Looks really nice! Please post a video when you get it running

[Stirling_rookie]

Engines running great, il post a video soon.