Author Topic: Big Boy to run again  (Read 571 times)

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mirage

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Re: Big Boy to run again
« Reply #1 on: January 29, 2014, 08:10:25 AM »
I saw this one on YT yesterday  :)

"reality distortion field"

Philip H

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Re: Big Boy to run again
« Reply #2 on: January 29, 2014, 02:10:45 PM »
Nice - too bad it won't run east.
Philip H.
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Baton Rouge Southern RR - Mount Rainier Division.

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wcfn100

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Re: Big Boy to run again
« Reply #3 on: January 29, 2014, 02:22:36 PM »
I may have to make the trip up to Cheyenne when it due to come in.


Jason
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trainforfun

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Re: Big Boy to run again
« Reply #4 on: January 29, 2014, 03:25:08 PM »
Thanks for the link , this is beautifull !!!
Funny that the lead loco is numbered 4884 when the steam loco have a wheel agencement 4-8-8-4 !!!  :D

A couple of questions :
why did they have to carry so many cars in the consist ?
At the beginning the siderods on the right side ( front and rear ) are synchronized , at the end of the video they are at 180 deg. , I thought all the wheels were the same dimension ?
Thanks ,
Louis



C855B

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Re: Big Boy to run again
« Reply #5 on: January 29, 2014, 06:24:04 PM »
Funny that the lead loco is numbered 4884 when the steam loco have a wheel agencement 4-8-8-4 !!!

It was intentional.

Quote
...why did they have to carry so many cars in the consist ?

Additional weight for braking on grades. Hoppers were filled with sand. They could not be 100% certain that the brakes on the locomotive were going to be enough to contain it after sitting for over 50 years.

Quote
At the beginning the siderods on the right side ( front and rear ) are synchronized , at the end of the video they are at 180 deg. , I thought all the wheels were the same dimension?

There is enough distance between the front and back engines to travel different distances entering and exiting sharp curves, such as turnouts.
« Last Edit: January 29, 2014, 06:28:40 PM by C855B »


trainforfun

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Re: Big Boy to run again
« Reply #7 on: January 30, 2014, 08:59:43 AM »
It was intentional.

Additional weight for braking on grades. Hoppers were filled with sand. They could not be 100% certain that the brakes on the locomotive were going to be enough to contain it after sitting for over 50 years.

There is enough distance between the front and back engines to travel different distances entering and exiting sharp curves, such as turnouts.

Thanks !!!!!!
Thanks ,
Louis



R.Groff

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Re: Big Boy to run again
« Reply #8 on: January 30, 2014, 12:52:26 PM »
Thanks for the posts seeing the Big Boy in action is amazing.
Rick Groff

Robbman

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Re: Big Boy to run again
« Reply #9 on: January 30, 2014, 07:06:08 PM »
It was intentional.

Additional weight for braking on grades. Hoppers were filled with sand. They could not be 100% certain that the brakes on the locomotive were going to be enough to contain it after sitting for over 50 years.


They were for all the braking... a dead steam locomotive isn't capable of braking itself (well... if it was rebuilt with MU cables and a 26L it could).  When they moved the NKP 763 to Ohio from Roanoke, empty gons were used for the same reason.