Proportion of HPa/HPb/HPc/HPd hopper rebuilds

[NW Mailing List]

Dow books are never in the right place at the right time. “My” copy is currently at its owner’s house (my father). I’m keeping your message in my inbox for when I again have access to it.  I don’t remember if it gets into the detail of door locks or not. 

Matt Goodman
Columbus, Ohio, US

> On Dec 4, 2024, at 12:28 PM, NW Mailing List <nw-mailing-list at nwhs.org> wrote:
> 
> Thanks for sharing that, Matt. I'm also interested to know how many of the HP cars received Wine door locks in place of the ratchet mechanism that they had as-built. Was Wine lock installation done in lieu of further rebuilding, or were ratchets replaced with Wine locks on cars that were later rebuilt to HPc or HPd? I don't have access to my Dow book at the moment, unfortunately.
> 
> Dan Miller
> 
> On Wed, Dec 4, 2024 at 7:30 AM NW Mailing List via NW-Mailing-List <nw-mailing-list at nwhs.org <mailto:nw-mailing-list at nwhs.org>> wrote:
>> All, Dan asked this question over on the Steam Era Freight Car list as well, where he received a thoughtful response from David Thompson. I thought it was worth reflecting here, for those that whose interest was piqued by Dans question (and don’t have the Dow book). 
>> 
>> Matt Goodman
>> Columbus, Ohio
>> 
>> ————
>> 
>> N&W received 4,000 class HM cars in 1910-11, and 8,000 class HP in 1911-15. Two cars were lost early, but the combined 11,998 were about half of N&W's hopper fleet up to 1922.
>> 
>> The 3,945 surviving HM cars were rebuilt to HPa (2,000 cars) and HPb (1,934 cars) in 1924-6. The other 11 were presumably lost to accidents or dismantled.
>> 
>> The 7,855 surviving HP cars were rebuilt to HPc (5,450 cars) and HPd (1,500) in 1927-32. Two HP were left unrebuilt, and the other 903 were dismantled.
>> 
>> This resulted in 10,884 rebuilt cars, about a third of N&W's hopper fleet of just under 30,000 cars in the mid-1930s.
>> 
>> David Thompson
>> 
>> 
>> On Dec 2, 2024, at 3:01 PM, NW Mailing List <nw-mailing-list at nwhs.org <mailto:nw-mailing-list at nwhs.org>> wrote:
>> 
>> 
>> Dear List,
>> 
>> During the HP hopper rebuilding program of 1923-32, how many HP cars were rebuilt into each of the HPa, HPb, HPc, and HPd subclasses? Were there any cars that persisted as unrebuilt HP cars? I am trying to understand the relative prevalence of each of these subclasses in the immediate pre-Depression (1929) era. Thanks for any help on this matter.
>> 
>> Dan Miller
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