Subject:
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Re: More Questions from Another Train Newbie
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 19 Nov 1999 21:41:04 GMT
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Viewed:
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674 times
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Bryan Wong wrote:
>
> Hi,
>
> Someone recently mentioned the fact that 9V tracks can only handle a limited
> number of motors/engines (whatever you call them). Also, puting multiple
> motors on the track will result in each motor getting less "juice"
> (current?). Is it true that using multiple motors in one train will result in
> an increase of "power" (be able to pull more), but also a decrease in speed?
There will be an increase in power, but a decrease in maximum speed. The
electrical formulas are complex because the power pack is not an ideal
constant voltage source, nor is it an ideal constant current source,
thus increasing the load will reduce the maximum voltage.
Actually, there should be a number of motors which attains the maximum
power. It is the same type of problem as impedance matching of stereo
speakers. You get the best power transfer when the impedance of the load
matches the impedance of the source.
> Second, is there any point in connecting two speed regulators (with two
> transformers) to the same set of tracks?
That would increase the maximum power which could be delivered, but you
would need to be carefull how you wired them up.
> Also, what is a "buffer"? I assume it's the black piece where you attach the
> magnet and the coupling to. Most commonly, it's attached directly to the set
> of wheels at a 90 degree angle... Hope I'm correct.
Correct.
--
Frank Filz
-----------------------------
Work: mailto:ffilz@us.ibm.com (business only please)
Home: mailto:ffilz@mindspring.com
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Message is in Reply To:
 | | More Questions from Another Train Newbie
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| Hi, Someone recently mentioned the fact that 9V tracks can only handle a limited number of motors/engines (whatever you call them). Also, puting multiple motors on the track will result in each motor getting less "juice" (current?). Is it true that (...) (25 years ago, 19-Nov-99, to lugnet.trains)
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