[modeleng] Re: Steam Engine Valve Events

The short answer is no ..... I have long held the opinion that, in our
sizes, things are happening far too quickly for such an infinestable error
to make any difference

> Moving the topic slightly, there's an article in this month's EIM about
> Walschaerts valve gear. hear the author mentions a 0.010 inch lead. My
> question is this: Would such a small  lead make that much difference even
> though it is a non negligible portion of the valve travel? Is it fair to
> consider steam as totally fluid on such a macro scale, and wouldn't
> turbulent effects etc mitigate against small differences just as 12 inch
> to the foot steam, small orifices gave 'wire drawing' effects akin to
> increasing supoerheat?
> Peter Chadwick
> Swindon
>
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