Subject:
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Re: Adjustable 4 wheel steering
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 28 Nov 2000 00:43:52 GMT
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Viewed:
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1085 times
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James,
I stand corrected!! I haven't investigated steam engines thoroughly, but I
used to like taking rides in the old traction engines at shows when I was a
kid. And back then I seemed to take a lot more in......
But I do remeber that the driver had a single big wheel on a screw
arrangement, as it turned, it moved the link to the valve up & down,
adjusting the "stroke" of the valve, and thus the speed. As I recall, the
driver didn't use any separate control for direction, though it was many
years ago.
ROSCO
James Powell <wx732@freenet.victoria.bc.ca> wrote in message
news:G4oHyx.1yE@lugnet.com...
>
> > I got the idea directly from the valve gear on steam engines. A similar
> > linkage allows the single throttle to control speed & direction of the
> > engine.
>
> No, it's not a single throttle. Throttle controls volume rate of flow for
> steam, valve gear controls cut off (position of piston to TDC when • admission is
> stopped). Hackworth Valve Gear does not have a curved arm, perhaps take a • look
> at it, rather than Walcharts/Baker/Stephenson for ideas. (it suffers other
> disadvantages when applied to a railway engine, such as being variable • because
> of springing...but that wouldn't affect this application)
>
> (2 controls in cab directly for power/speed, the reverser& the regulator)
>
> James P
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Message is in Reply To:
 | | Re: Adjustable 4 wheel steering
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| (...) No, it's not a single throttle. Throttle controls volume rate of flow for steam, valve gear controls cut off (position of piston to TDC when admission is stopped). Hackworth Valve Gear does not have a curved arm, perhaps take a look at it, (...) (24 years ago, 27-Nov-00, to lugnet.technic)
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