Subject:
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Re: BBB&C "new" 4-2-0 and Class A Shay locomotives
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Newsgroups:
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lugnet.trains
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Date:
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Wed, 18 Nov 2009 18:30:18 GMT
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Viewed:
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15044 times
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In lugnet.trains, Kurt Baty wrote:
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A two truck, two cylinder,
“Class A” Shay Locomotive
My BBB&C’s locomotive number 7
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...
I should say that I built this MOC in response an article called “SELECTIVE
COMPRESSION APPLIED TO MECHANICAL DETAILS” by Steve Barile in
RAILBRICKS issue 3 on page 34-35
where it says:
“The Shay does not have traditional steam driver wheels but instead only front
and rear two axle trucks. What is tricky about modeling the Shay is the
rotating, bending, and changing length of the drive shaft, while maintaining a
90° crown gear connection to each axle as well as a connection to the vertical
piston rods. It barely makes mechanical sense while studying the real engine.
Trying to achieve this in a six wide (even eight wide) train with a pure LEGO
solution seems to be impossible (ha, a challenge!).”
I hope my 8-wide MOC answers this challenge!
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