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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Mon, 27 Nov 2000 22:49:20 GMT
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Viewed:
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1077 times
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In lugnet.technic, James Powell writes:
>
> > 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)
Interesting subject. I have been trying to simulate a Valve Gear with
technic elements
and I can say that the Walcharts valve gear is difficult to model because of the
curved expansion arm. Any ideas how to do this with Lego elements?
BTW a great valve gear simulation can be found at:
http://www.nmia.com/~vrbass/steam/valvegear.htm
--Jim
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Message has 1 Reply:
 | | Re: Adjustable 4 wheel steering
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| Hi, Speaking of steam engines, I've built a working Lego live steam engine... OK, OK, the boiler and piston are metal, but the chassis is Lego Technic. You can see it at: (URL) of the chassis are on my Lego page at: (URL) those interested, the steam (...) (24 years ago, 28-Nov-00, to lugnet.technic)
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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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