Subject:
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Re: This is odd...
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 25 Oct 2002 15:31:31 GMT
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Viewed:
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551 times
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In lugnet.trains, Stefan Garcia writes:
> In lugnet.trains, John Neal writes:
> > One thing you didn't suggest was that maybe the one motor is worn out.
> > Stefan, did you pull a switch and see if the results were the same?
> That only adds to my confusion. The Porter has the old motor and my
> Greenbrier has the brand new (3 days old) motor. I did take out a battery
> box which really wasn't needed, and it's a bit better, but I can't make the
> engine much lighter.
Okay, then your problem is drag. Weight isn't so much a problem if there isn't
a lot of friction. I just looked at your engine again and I can see your
problem, because it is one that my son Ross experienced when he built his
Pacific:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=16328
The driver rods create A LOT of resistance and are probably the culprit here.
Try removing them and see if that helps any.
Although steam locos are way interesting to look at, they present formidable
engineering problems in this medium. Keep adding/removing/altering your design
and see if you can solve this by trail and error. Don't get discouraged-- it's
all a part of the fun:-)
-John
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Message has 1 Reply:
 | | Re: This is odd...
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| (...) The Consolidation was torn down shortly after my article was in the paper. My new engine is quite a bit bigger, but they're essentially the same. I did disconnect the two center drivers from the side rods, which reduced strain on the 9V motor, (...) (22 years ago, 25-Oct-02, to lugnet.trains)
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Message is in Reply To:
| | Re: This is odd...
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| (...) That only adds to my confusion. The Porter has the old motor and my Greenbrier has the brand new (3 days old) motor. I did take out a battery box which really wasn't needed, and it's a bit better, but I can't make the engine much lighter. (...) (22 years ago, 25-Oct-02, to lugnet.trains)
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