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 Post subject: Westinghouse 8" Steam Air Compressor
PostPosted: Mon Apr 15, 2019 2:33 pm 

Joined: Wed Dec 02, 2015 10:38 am
Posts: 130
Does anyone know of or have access to dimensioned drawings of a Westinghouse 8 1/2" Single Stage Steam Air Pump? I am working on drawings of a Climax geared steam locomotive with two and since its not a Climax part I am not interested in spending a lot of time on a 3D model on which to hang a few pipes in the correct locations.

If it were a Climax part I would, but a solid model will do for its intended use.

Climax did cast its own couplers in steel which is one thing I do intend to spend some time on as they are marked "Climax Cast Steel".

I have found a couple of Westinghouse maintenance manuals online, but except for very basic dimensions (and they are mostly cut-aways) I have not found a source.

Thanks in advance.


Last edited by WESIII on Mon Apr 22, 2019 9:52 am, edited 1 time in total.

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 Post subject: Re: Westinghouse 8 1/2" Steam Air Compressor
PostPosted: Mon Apr 15, 2019 3:09 pm 

Joined: Sun Aug 22, 2004 7:19 am
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Location: southeastern USA
Backshop Enterprises bought the air compressor business from Bert Williams long ago, which included a lot of stuff Bert got from WABCO. You might start there.....

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 Post subject: Re: Westinghouse 8 1/2" Steam Air Compressor
PostPosted: Mon Apr 15, 2019 4:29 pm 
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I thought that "Climax" couplers were a trade name used by the National National Malleable Castings Company, not associated with Climax Locomotive.

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 Post subject: Re: Westinghouse 8 1/2" Steam Air Compressor
PostPosted: Mon Apr 15, 2019 5:39 pm 

Joined: Wed Dec 02, 2015 10:38 am
Posts: 130
You may be correct about the coupler. Being a Climax locomotive I may have jumped to a wrong conclusion, but it is not a typical coupler like all the rest so it is probably an original 1919 design for small locomotives.

Thanks for the heads up. I will contact the Backshop.


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 Post subject: Re: Westinghouse 8 1/2" Steam Air Compressor
PostPosted: Mon Apr 15, 2019 10:44 pm 

Joined: Wed Jan 28, 2009 4:30 pm
Posts: 205
I have an 8" Westinghouse air pump in pieces on my bench now. A horizontal not vertical reverse shuttle (although I have a vertical too). I can photograph it with a scale if it would help. I will tell you that the top casting is identical to a 9-1/2" except it fits an 8 " cylinder. All the 9-1/2" tooling I have works on the 8". So if photos with reference help let me know.

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 Post subject: Re: Westinghouse 8 1/2" Steam Air Compressor
PostPosted: Tue Apr 16, 2019 11:07 am 

Joined: Tue Sep 14, 2004 7:52 am
Posts: 2561
Location: Strasburg, PA
I was going to say, that I don't believe that there was such a thing as an 8-1/2" single stage compressor. The sizes that I am aware of are 6", 8" 9-1/2" (with or without fins on the air cylinder), & 11". Then you get into 8-1/2" cross compound, and IIRC 10-1/2" cross compound for low steam pressures (not sure on that one).


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 Post subject: Re: Westinghouse 8 1/2" Steam Air Compressor
PostPosted: Tue Apr 16, 2019 4:29 pm 

Joined: Wed Dec 02, 2015 10:38 am
Posts: 130
I was working from memory (at least 4 years ago). I have an inquiry to a knowledgeable individual but have not received a response.

The only thing I am sure about is that the mounting studs on the Climax cast air pump bracket are 16" H. x 20 1/4" V. (Pattern F136) because I carefully measured them I was working on the pattern in 3D CADD and re-configuring the originals to fit the studs on the Vancouver Iron Works boiler as their number and locations were not the same as the original Iron Union Works boiler.

My emphasis was staying ahead of the rebuild and concentrating on the unique Climax parts and assembly methods and details. If the 16" H. x 20 1/4" V. matches a WABCO single stage mounting, that would tell me what size 1551 originally had.


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 Post subject: Re: Westinghouse 8 1/2" Steam Air Compressor
PostPosted: Tue Apr 16, 2019 7:11 pm 

Joined: Sun Oct 15, 2017 7:58 pm
Posts: 172
Don't have dimensioned drawings. But, hopefully this may be of help to you.
Close-up of a very similar ....9 1/2 Westinghouse Airbrake, on Prairie Dog Central #3.
An 1882 Glasgow Locomotive Works 4-4-0.
Shows the mounting backplate.

The data plate shows serial # 944, and size as 9 1/2 X 9 1/2 X 10.
Rebuilt by Shop Services Div. Mt Pleasant IA.

Hope this helps.
(These shots helped me understand what you are talking about).


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 Post subject: Re: Westinghouse 8 1/2" Steam Air Compressor
PostPosted: Tue Apr 16, 2019 9:23 pm 

Joined: Wed Dec 02, 2015 10:38 am
Posts: 130
Here is where I stopped. The drawing from which this was developed had the vertical mounting holes 22+" a but I used the 16" and 20 1/4".

Pending further info, this is where I stop since I am not a Westinghouse historian -- only C & O Ry., and Climax.


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 Post subject: Re: Westinghouse 8 1/2" Steam Air Compressor
PostPosted: Sun Apr 21, 2019 7:25 pm 

Joined: Mon Aug 23, 2004 2:09 pm
Posts: 399
Location: Los Angeles
[quote="Dave"]Backshop Enterprises bought the air compressor business from Bert Williams long ago, which included a lot of stuff Bert got from WABCO. You might start there.....[/quote]

Bernie Watts is in the biz of fixing things and not letting blueprints out of the shop. Good Luck


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 Post subject: Re: Westinghouse 8 1/2" Steam Air Compressor
PostPosted: Mon Apr 22, 2019 8:20 am 

Joined: Thu Apr 14, 2005 9:34 pm
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Location: Copenhagen, Denmark
Why does the whistle on Prairie Dog #3 have a shield around it?

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 Post subject: Re: Westinghouse 8" Steam Air Compressor
PostPosted: Mon Apr 22, 2019 10:10 am 

Joined: Wed Dec 02, 2015 10:38 am
Posts: 130
I found a drawing with a couple of dimensions and scaled the drawing in a 2D CADD program and this is what I was able to accomplish. I would attach a 3D pdf but file is too big.


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WABCO 8in Air Pump.pdf [239.31 KiB]
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 Post subject: Re: Westinghouse 8" Steam Air Compressor
PostPosted: Mon Apr 22, 2019 7:49 pm 

Joined: Sun Oct 15, 2017 7:58 pm
Posts: 172
Steven Harrod. Re. Whistle guard.

The whistle is plumbed directly into the steam dome.
Meaning it uses saturated steam.
Which can occasionally "slobber" scalding water along with steam when operated.

The guard prevents the crew from getting a face full of it,
as it's a small engine, and the whistle is quite close to the cab.

That's what I've been told anyway.

Here's a quiz question...Anyone care to comment on what Hogger Bryan is up to..just before departure...?


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 Post subject: Re: Westinghouse 8" Steam Air Compressor
PostPosted: Tue Apr 23, 2019 7:38 am 

Joined: Sun Aug 22, 2004 7:19 am
Posts: 6399
Location: southeastern USA
Contemplating the need to repack the steam valve rod on the injector?

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“God, the beautiful racket of it all: the sighing and hissing, the rattle and clack of the cars over the rails. These were the sounds that made America the greatest country on earth." Jonathan Evison


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 Post subject: Re: Westinghouse 8" Steam Air Compressor
PostPosted: Tue Apr 23, 2019 10:54 am 

Joined: Tue Sep 14, 2004 7:52 am
Posts: 2561
Location: Strasburg, PA
Thinking about how much easier Sellers injectors are to start than Hancock inspirators?


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