Comments on: The Simple Stirling 1 Plans are done ! http://www.solarheatengines.com/2008/05/19/the-simple-stirling-1-plans-are-done/ Simulate, analyze, design, build, and test solar-powered engines Sat, 04 Sep 2010 06:11:51 -0400 hourly 1 http://wordpress.org/?v=3.0 By: admin http://www.solarheatengines.com/2008/05/19/the-simple-stirling-1-plans-are-done/comment-page-1/#comment-68 admin Tue, 03 Jun 2008 05:31:44 +0000 http://www.solarheatengines.com/2008/05/19/the-simple-stirling-1-plans-are-done/#comment-68 On my engine 3D I think I am using what you refer to as a pantograph-type coupling (see http://www.solarheatengines.com/photos/engine-3-photos/img_1836/ ) For the simple engine I'm avoiding as much complexity as possible. For an elegant solution the rhombic drive (see http://en.wikipedia.org/wiki/Rhombic_drive ) is hard to beat--but it isn't simple to make. Feel free to apply your creative energy to developing a simple mechanism to closely approximate the ideal Stirling cycle (see http://www.solarheatengines.com/2008/05/07/the-stirling-cycle%e2%80%94ideal-and-practical/ ) On my engine 3D I think I am using what you refer to as a pantograph-type coupling (see http://www.solarheatengines.com/photos/engine-3-photos/img_1836/ ) For the simple engine I’m avoiding as much complexity as possible. For an elegant solution the rhombic drive (see http://en.wikipedia.org/wiki/Rhombic_drive ) is hard to beat–but it isn’t simple to make. Feel free to apply your creative energy to developing a simple mechanism to closely approximate the ideal Stirling cycle (see http://www.solarheatengines.com/2008/05/07/the-stirling-cycle%e2%80%94ideal-and-practical/ )

]]> By: John T Armstrong http://www.solarheatengines.com/2008/05/19/the-simple-stirling-1-plans-are-done/comment-page-1/#comment-67 John T Armstrong Mon, 02 Jun 2008 22:48:23 +0000 http://www.solarheatengines.com/2008/05/19/the-simple-stirling-1-plans-are-done/#comment-67 Beautiful work - Thanks. An observation - since you have to extract power in quadrature - and the power is extracted over what appears to be an elliptical curve, perhaps a mechanical coupling that mimics a pantograph that would produce the desired ellipse, would allow a better match and increase the coupling efficiency. (this is from an EE, not an ME ... so take it for what it's worth :)) Other Ideas - 1. a transmission made of a cone and a wheel off axis to each other 2. a transmission made of two cones, off axis to each other 3. a planetary gearing system. I would like to know if these ideas are useful. John Beautiful work – Thanks.

An observation – since you have to extract power in quadrature – and the power is extracted over what appears to be an elliptical curve, perhaps a mechanical coupling that mimics a pantograph that would produce the desired ellipse, would allow a better match and increase the coupling efficiency. (this is from an EE, not an ME … so take it for what it’s worth :) )

Other Ideas –
1. a transmission made of a cone and a wheel off axis to each other
2. a transmission made of two cones, off axis to each other
3. a planetary gearing system.

I would like to know if these ideas are useful.

John

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