Subject:
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Re: Pneumatically driven locomotive ??
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Newsgroups:
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lugnet.trains
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Date:
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Tue, 24 Apr 2001 19:19:49 GMT
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Viewed:
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1058 times
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>
> I have always wondered how steam engines do deal with pistons winding up dead
> center. With a car, the starter motor gets the fly wheel going, so there is
> already momentum before the pistons start firing, but with a steam locomotive
> the pistons start at a dead stop and the inertia of the train seems like is
> would outweigh the momentum of a wheel. The only thing I can think of is to • have
> the sides push at different times.
That's how it is done, it's called "Quartering". Realize that a 2 cylinder,
double acting steam engine has as many power strokes as a 8 cylinder car engine
(4 stroke).
Because the "push" for the pistons comes from the steam, the valve events
(which are controllable) determine when the push will come, not the "firing"
(burning) of the fuel.
James
(off with a brilliant flash, I'll see how well it works!)
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Message is in Reply To:
 | | Re: Pneumatically driven locomotive ??
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| (...) I have always wondered how steam engines do deal with pistons winding up dead center. With a car, the starter motor gets the fly wheel going, so there is already momentum before the pistons start firing, but with a steam locomotive the pistons (...) (23 years ago, 24-Apr-01, to lugnet.trains)
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