Subject:
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Re: The RTS Zavala Steamship-of-War
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Newsgroups:
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lugnet.pirates
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Date:
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Wed, 17 Dec 2008 04:46:05 GMT
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Viewed:
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13978 times
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In lugnet.pirates, Richie Dulin wrote:
I am glad you liked it!
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A great model of a vessel from an interesting but oft overlooked period.
(Which is odd, because as you demonstrate, the length/width ratio of vessels
was changing to a more LEGO-friendly one).
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The ability to build the hull is what lead me down the trail to the briar-patch
of design issues in building the Zavala, OK so I had fun...
The early fast packet steamships (see
packet ships) wanted to go as fast as possible, to achieve this they made their
in-the-water hull very long and narrow. Why? because the speed of a hull through
the water is proportional to a constant (called a Froude number) times the
squareroot of the length of the hull at the “moving” (not resting) waterline
divided-by the width of the hull (ie. drag). The Zavala was built in 1836 as a
“fast” (for her time) packet steamship named the Charleston she had a hull
waterline width (beam) of 24 feet and a waterline length of ~190 feet, ie. very
long and narrow. However from port outside paddle-wheel shell to outside
starboard paddle-wheel shell (measured from the scaled drawing) was ~50 feet.
The scale of my model was set by the width of the hull center pieces (16 studs)
with two rows of inverted slopes on each side (16 + 4 = 20 studs) (see the reply
I made above about scale). The “paddles” are a 2x8 plate with holes, in a 9 stud
inside width paddle-wheel shell, so 11 studs outside width paddle-wheel shells,
overlapping one stud with the side of the hull, means a overall width of 40
studs.
Thanks!
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Cheers
Richie DulinÂÂÂ
CO Legeaux
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Message is in Reply To:
 | | Re: The RTS Zavala Steamship-of-War
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| (...) Awesome work, Kurt. A great model of a vessel from an interesting but oft overlooked period. (Which is odd, because as you demonstrate, the length/width ratio of vessels was changing to a more LEGO-friendly one). Spotlighted! Cheers Richie (...) (16 years ago, 16-Dec-08, to lugnet.pirates, FTX)
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