Trying to build beta stirling engine

[austin]

I'm working on building a beta type stirling engine for school but before I move on to fabrication of the engine I would like to make sure my dimensions and ratios are correct for the engine to run. I am planning to make this engine vertical.
Here is a sketch of my dimensions

https://docs.google.com/document/d/18ew ... sp=sharing

The hot cylinder will be: 55mm long and 18mm wide
The cool cylinder will be: 36mm long and 18mm wide
My displacer will be: 36mm long and 17mm wide
My power piston will be: 10mm long and fit in the cool cylinder
Strokes: Both strokes for the pistons will be 20mm long

Can anyone help verify that this engine if built correct will run? Thank you so much.

[thanh-cuibap]

Hi austin !
You can check :
http://www.stirlingengineforum.com/view ... f=1&t=2231

[Ian S C]

As the bore for the displacer and power piston is the same, the stroke of the displacer must be increased to obtain the ratio of 1.5 : 1, ie 20 mm stroke for the power piston, 30 mm stroke for the displacer.
This is the second motor that I built in 1994, its still going strong. Its based on Dyna, a motor designed by James G. Rizzo in "The Stirling Engine Manual", and "Modelling Stirling and Hot Air Engines"
Ian S C
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