Hi Jim
On (07 Sep 97) Jim Dunmyer wrote to Alec Cameron...
 > bottom dead centre, waiting briefly at each gallery for the rod to 
 > make one
 > pass, then step on it for transit to another gallery, and another, 
 JD> Those did use crankshafts and were introduced much later than the 
ngines
 JD> I was talking about. They used 'em in coal mines, and the copper mines 
n
 JD> Michigan's Upper Peninsula.
Being British I don't know much about the Land of the Brave and the Free!!
Thanks for that info. I wonder if the crankshaft was a useful complication??
Cheers....ALEC
... ....The wheel is environmentally unviable
--- PPoint 1.92
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