Photo: Gondolas With Structures For Hoover Dam (Circa 1930-1935)


Bob Chaparro
 

Photo: Gondolas With Structures For Hoover Dam (Circa 1930-1935)

Photo from the University of Nevada/Las Vegas:

https://special.library.unlv.edu/ark:/62930/d1779v

Photo can be enlarged.

First gondola is UP.

Bob Chaparro

Hemet, CA


 

We’re the empty flat cars used for more braking?

Andy Andy Jackson
Santa Fe Springs CA


Bruce Smith
 

Andy,

They are idlers, used because the loads overlap one end of the gondolas.

 

Regards,

Bruce Smith

Auburn, AL

 

From: <main@RealSTMFC.groups.io> on behalf of Andy Jackson <lajrmdlr@...>
Reply-To: "main@RealSTMFC.groups.io" <main@RealSTMFC.groups.io>
Date: Thursday, June 9, 2022 at 4:06 PM
To: "main@RealSTMFC.groups.io" <main@RealSTMFC.groups.io>
Subject: [EXT] Re: [RealSTMFC] Photo: Gondolas With Structures For Hoover Dam (Circa 1930-1935)

 

CAUTION: Email Originated Outside of Auburn.

We’re the empty flat cars used for more braking?

Andy Andy Jackson

Santa Fe Springs CA

 


Charlie Duckworth
 

I’m only guessing but the empty flat cars may have been used to better distribute the weight of the steel structures going over a bridge. 
--
Charlie Duckworth 
Omaha, Ne.


Jack Mullen
 

As Bruce said, they're idlers. The girders are a bit longer than the cars' I.L.  Note that the gons each have an open drop end facing the adjacent flat. The cars are in groups of three, two gons with open ends facing opposite directions with a flat between, making efficient use of idlers.

Jack Mullen


Ted Larson
 

Used to see MANY utility pole loads set up that same way.  Idlers used to allow shipping poles longer than the flat of gon.  




--
Ted Larson
Trainweb.org/MHRR   ---   GN in 1965   ---   NASG.org 


Randy Hees
 

It is unlikely for weight.  The Boulder City Branch was laid with relay 90lb, with 23 ties per 39' rail length (although they used 31' rails) so was equivelent to any UP main line at the time.  The grades were 1.1 to 1.2%.  The line was super elevated to allow 45mph.  There are photos of the smaller challangers in Boulder City.  We believe that the larger chalangers with centepied tenders would have had issues on the wye.

Randy Hees,
Retired Director, Nevada State Railroad Museum, Boulder City