Reply To: Stirling Engine : Laura

[Ian S CParticipant @iansc]

The glass bit can be changed for a metal hot cap, but I would not use aluminium, stainless steel is the best. Depending on the diameter, a good place to get a ready made hot cap is a NiCad battery, I have a little motor that uses the metal case of an AA size battery. I find it unusual that the displacer is made of solid metal, these are normally hollow, and as light as possible. Some of the engines with test tube hot caps also have a test tube displacer.

I bought a little Bohm Stirling Engine from Jaycar, I find it is not really well designed, but it does go.

Ian S C Here's the little one of my design.  The flywheel is 2" diameter  Stainless steel, main and big end bearings are ball races salvaged from VHS tape machines.

Edited By Ian S C on 11/10/2015 12:28:52