Author Topic: Gibbon, Cozad & Western - "The 100th Meridian Line"  (Read 203162 times)

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C855B

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1890 on: July 02, 2020, 12:20:14 AM »
+7
You know that old adage, "You always find it in the last place you looked." Well, duh. But in this case, I had been rifling through boxes for about a week both at home and at the studio, and was down to the very last tote they could've possibly been in, in the back and bottom of a stack of 15 totes of train supplies, and getting really, really concerned that I had lost them; they were essentially irreplaceable, and very expensive if I could.

Found 'em!:



Along with a brown recluse spider in the bottom of the tote, which was quickly dispatched.

I acquired these BLMA bridges over the span [pun!] of a decade, knowing there was an Afton Canyon end game somewhere in the distant future. And here we are. I elected to only do a single 200' span to represent the west crossing (1:1 has two, as modeled by @jpwisc here), spending the shekels to do the more interesting but lesser-seen east crossing.

Progress on this end of the peninsula is going a lot slower than planned; I was hoping to at least have the mainline operable by today. There were several mental blocks in the terraforming, but with the bridges in hand there's renewed clarity, including [...shuffling his feet...] the realization that the terraced benchwork now puts the RR too high above the river bottom. Yeah, fixing it is only yet more pink foam. (Grumble.)
...mike

http://www.gibboncozadandwestern.com

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amato1969

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1891 on: July 02, 2020, 12:50:44 AM »
0
Nice save!  Those bridges will be a nice scene for sure.

  Frank

C855B

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1892 on: July 02, 2020, 01:16:19 AM »
+2
Thanks, Frank!

BTW, I stand corrected - Atlas has current stock on the 200' camelback, so I could do the full span by the campground if I wanted to. Still costly, tho'. The 150'-er is nowhere to be found, however. Glad I snatched-up the one when I did.
...mike

http://www.gibboncozadandwestern.com

Never trust anyone lacking a sense of humor.

wazzou

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1893 on: July 02, 2020, 01:43:55 AM »
0
Is the 150'er really all that much different than the much cheaper and readily available Central Valley bridge?

I think I've got 4 or 5 of those.
I've built one mostly stock as a test and since have acquired enough spare parts to make the pin connected ones I'll need for the Northern Pacific's iterations.
I may just sell the one I've built as it really would be hard to retrofit to a pin connected version.
Bryan

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C855B

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1894 on: July 02, 2020, 07:51:36 AM »
+1
Is the 150'er really all that much different than the much cheaper and readily available Central Valley bridge? ...

I'll look. I also have a handful of the CV kits in original and modernized versions for other points on the layout, one assembled. One immediate difference I can think of is walkways.

There's only the one 150' truss in the canyon, so my concern was replacing if it came down to that.
...mike

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Never trust anyone lacking a sense of humor.

Cajonpassfan

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1895 on: July 02, 2020, 10:17:44 AM »
0
Mike, those bridges will be gorgeous!
(They already are).
Otto

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1896 on: July 02, 2020, 11:43:22 AM »
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Now, as to the Brown Recluse... call an exterminator. Where there’s one, there’s a bunch more you haven’t found... yet and you don’t want to mess with those.

C855B

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1897 on: July 02, 2020, 03:26:55 PM »
+1
This answers our questions on CV versus BLMA on the 150' truss:



I was surprised in the side by side comparison; the CV is based on a much lighter prototype. I was planning to use four as-is, thinking "close enough" for the Meadow Valley Wash portion of the layout, but they're really not appropriate for a heavy Class I main. However, a little bit of light kitbashing such as beefing-up the diagonals and adding gussets should put the look in the ballpark.
...mike

http://www.gibboncozadandwestern.com

Never trust anyone lacking a sense of humor.

Missaberoad

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1898 on: July 04, 2020, 06:15:22 PM »
+2
Murphy's Law says that one will show up the same day it's designated "finished".  :facepalm:  Anyway, the issue is the period: daylighted in '57, I model 1970.

Hate to disappoint Edward Murphy, but I found some UP company photos you might find interesting.  :D



And on the Subject of Tunnel vs Daylight... Why not both?  :D Bend the timeline a little bit and model the Daylighting process...







All photos Union Pacific.



Ryan in Alberta

C855B

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1899 on: July 04, 2020, 08:36:39 PM »
0
/>
+10 for you! Thanks, Ryan.

That top shot of the east portal looks to be of the aftermath of the big flood in 1938.
...mike

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C855B

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1900 on: July 18, 2020, 01:45:15 PM »
+1
Sometimes you get the bear, sometimes it gets you. Correcting design and engineering mistakes:



Wrapping my head around this whole thing threw progress way behind.

The design mistake was mentioned a couple of posts back, terracing the framework when the extreme elevation change was a fanciful fabrication rather than reflecting the scene to be captured. Adding the second layer of pink foam addresses that. There was passing thought to scrap everything from the framework join to the end, but "less work" made the decision since a full teardown wouldn't save materials.

The engineering mistake was stupid stupid stupid - a Structural Design 201 fail: never piece structural elements that are well within material specs for a continuous span. As a result, as @CRudeME pointed out at the time, there was a visible sag in one side of the peninsula lobe. I was planning to cover the "oops!" with fascia like so much frosting on a cake, but laminating the new top layer put the mistake front and center and I couldn't live with it any longer. Adding a gusset to the pieced cross-member fixed most of the sag and there are other adjustments including the additional structure of the foam topper that should make things tolerable. We'll know for sure tomorrow after the adhesive has cured.

Next on the list is cookie-cutter subroadbed with its own complications and...

[...pause to watch the passing CN train on the railcam. Blueberry on the point of a seven unit lashup including two leased GP-somethings in patched UP paint. Weird...]

...anyway, once the subroadbed is down and the bridge supports carved in, I can get going on making mountains out of molehills that annoying growing pile of pink foam scraps.
...mike

http://www.gibboncozadandwestern.com

Never trust anyone lacking a sense of humor.

Sokramiketes

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1901 on: July 20, 2020, 09:44:49 AM »
0
Imagine that photo, but with the sky blue all they way up to the ceiling line.
Mike

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C855B

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Re: Gibbon, Cozad & Western - "The 100th Meridian Line"
« Reply #1902 on: July 20, 2020, 10:47:20 AM »
0
Imagine that photo, but with the sky blue all they way up to the ceiling line.

Already imagined:

https://www.therailwire.net/forum/index.php?topic=26087.msg418348#msg418348
...mike

http://www.gibboncozadandwestern.com

Never trust anyone lacking a sense of humor.