I have recently started building Gerry's Beam Engine - but first I completely redrew and metricated it if anyone is interested.
In steam driven 2D ACAD10 - I've been designing machinery for nigh on 30 years with it and can't be bothered to "upgrade" this close to retiring.
So this engine is now 12.5mm bore by 25mm stroke - similarly all other dimensions and threads have been changed (not simply multiplied by 25.4).
I also changed the position of the valvegear bellcrank as I didn't like the look of that cantilevered pin on the end of the valve stem.
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Update - Re request from smgraph
I have attached the *.dxf file (don't know if it works) and updated a few minor errors & material changes 24/11/2010
View attachment Beameng.dxf
View attachment Beameng.dwg
In steam driven 2D ACAD10 - I've been designing machinery for nigh on 30 years with it and can't be bothered to "upgrade" this close to retiring.
So this engine is now 12.5mm bore by 25mm stroke - similarly all other dimensions and threads have been changed (not simply multiplied by 25.4).
I also changed the position of the valvegear bellcrank as I didn't like the look of that cantilevered pin on the end of the valve stem.
--------------------------------------------------------------
Update - Re request from smgraph
I have attached the *.dxf file (don't know if it works) and updated a few minor errors & material changes 24/11/2010
View attachment Beameng.dxf
View attachment Beameng.dwg