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Posted by Cheshire Steve on June 13, 2008, 7:56 pm
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>
>
>
>
> >> It looks as though it is intended to have an expansion valve.
> >> I do not have time to explain right now.
>
> > On second thoughts, look at this:
>
> >http://oldenginehouse.users.btopenworld.com/expslv.htm
>
> > --
> > Charles Lamont
>
> Thanks Charles, I'm beginning to wonder if an expansion valve was intended
> but not implemented fully. To scale the picture, the steam chest screws
> are 14BA - ish (not yet measured them up). So producing even a manual
> expansion valve that worked would have been a challenge at the time this was
> built.
>
> My thought was that the expansion valve should move in phase with the slide
> valve?
>
> Steve
I wondered if it was a patent prototype to show a novel linkage to
allow an overhead slide valve, with the internal valve mechanism being
taken as read. Perhaps overhead slide valves have an advantage as
regards handling condensation or lubrication.
Just a thought..Steve
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