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  #19 (permalink)  
Old 11-29-2007, 11:07 AM
Join Date: Apr 2006
Posts: 841

I really do not recall, but I seem to remember it was less than half the stroke, maybe, perhaps, possibly, subject to correction. He wanted to use every possible ounce of push while saving every ounce of steam. At high speeds (rpms) a very short cut-off was desirable on steam locomotives, so why not on steamboats, too?
I should point out that Birch McBride was a double-ender and had engineer's license. He stuck with what he was used to doing.
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