4014 at Promontory Point in 2019

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Fitz
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Re: 4014 at Promontory Point in 2019

Postby Fitz » Sat Aug 26, 2017 4:05 pm

What is the tube/flue length on a Big Boy? Those two boiler sections don't look like the boiler itself is much longer than that of a 4-8-4. The firebox is enormous. I remember looking into 4014's when it was still at Rail Giants.
Image

John Bohon
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Re: 4014 at Promontory Point in 2019

Postby John Bohon » Sun Aug 27, 2017 8:07 am

From what I can find the tubes and flues are 22 feet long. That is about as long as they can practically get. From what I understand 20 feet and up the tubes can vibrate and break. The combustion chamber is a little over 9 feet long. The Big Boy can boil some water.

John Bohon

bobnsteam
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Re: 4014 at Promontory Point in 2019

Postby bobnsteam » Mon Aug 28, 2017 12:37 pm

Regarding Millhouse's post that included Dicken's steam update on 4014 I was intrigued by the detail drawing
of the reverse shaft dated 9-5-41, rev D dated 11-1-44. I assume all 25 bigboys were delivered by this time.
Drawing changes still going on? To build new parts UP must possess all of ALCO's original engineering drawings.
Would like to see some of them!
Bob

Millhouse
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Re: 4014 at Promontory Point in 2019

Postby Millhouse » Tue Aug 29, 2017 2:51 pm

Today's youtube find. I've specifically been looking for this angle of the firebox, because I remembered it. Looks like this video was taken back in March, likely before the boiler was moved outdoors.

If you pause the video at about 1:07, you'll see someone is a Batman fan, as someone welded a piece of sheetmetal shaped like the Bat Signal just inside the firebox door. Now I have absolutely no idea why, but one could postulate it's to keep folks from trying to crawl inside it when they wheeled the boiler outside, maybe. Maybe.



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