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  • #1

    Wanted Horizontal Boiler Photos and Details

    HI Guys im working on building a Ho scale boiler from scratch. I have been having trouble finding prototype photos using image searches.

    I am having trouble getting the proportions right. I have looked at the CHB castings from Sierra West to get some idea of proportion but lacking prototype information its a little difficult.

    I thought there would be members hear that can help me out with a few things like

    - Typical scale length - Im thinking about 20 to 25 ft

    - Boiler diameter . Would 4 Ft be to large?

    - Fire Box length and heigh.

    Basically any info on scale of them would be helpful. Im looking at this for a mill engine structure.
    Owen Pass Lumber Company

    HO Logging Layout in a Shed.

    https://owenpass.blogspot.com/
    Tags: None
  • #2
    Rio Grande Models has two styles of Horizontal Boilers for sale. Would they be helpful?
    It's only make-believe

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    • #3
      I have extensive photos of some old stationary boilers that I've seen at ghost towns in Nevada. They've been abandoned for decades and are not complete but may still be helpful. Here's one at Jefferson, NV:



      You can see the rest of the photos of that boiler here: http://www.raydunakin.com/Site/Jeffe..._Mines.html#17


      Here's another one, at the Illinois Mine:



      You can see the rest of the photos of that boiler here: http://www.raydunakin.com/Site/Illinois_Mine_NV.html#34

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      • #4
        Just out of curiosity, what is the final use of the boiler?
        Russ

        It's not Practice makes Perfect, It's Perfect Practice makes Perfect

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        • #5
          How about using the dimensions of a logging locomotives boiler such as a Shay for dimensions and proportions? Didn't they use similar boilers both for locomotive engines and stationary?

          Bernd
          New York, Vermont & Northern Rwy. - Route of the Black Diamonds

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          • #6
            quote:

            Originally posted by Bernd

            How about using the dimensions of a logging locomotives boiler such as a Shay for dimensions and proportions? Didn't they use similar boilers both for locomotive engines and stationary?

            Bernd

            Bernd's suggestion is a good point, to be looking for.

            Some information I have is referenced below.

            There are many different styles and types, but for the most part here are some measurements.

            The main components of these large locomotive boiler dimensions (approximate average for 25 HP boilers of the 1880's):

            overall length 14 ft.

            barrel (dia.) 40"

            fire box (length) 48-51"

            grate 7 sq. ft.

            fire door 16" dia.

            dome (height) 36"

            tubes (dia.) 3"

            tubes (length) 96"

            tubes (number) 43-48

            stack 25 ft.

            The boiler specified above would weigh about 6,800-7,600 lbs. It would come with fittings such as guy rods, hand hole plates, bonnet, gauges, siphon, cocks, check valve, globe valve and pop safety valve. The maximum steam working pressure would be about 100 psi.




            Louis L&R Western Railroad
            Pacific Northwest Logging in the East Coast

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            • #7
              quote:

              Originally posted by NE Brownstone

              Just out of curiosity, what is the final use of the boiler?

              If I'm reading your question right. It makes up the power (steam) to run (in a locomotives case) the cylinders. In the case of mill work, it provides the power to run the equipment.

              In the locomotive-type boiler, fuel is burnt in a firebox to produce hot combustion gases. It is used in generating saturated ("wet") steam. The steam rises to the highest point of the boiler, the steam dome, where it is collected. The dome is the site of the regulator that controls the exit of steam from the boiler. The steam is directed to the steam engine's cylinders or rarely to a turbine to produce mechanical work. Exhaust gases are fed out through the chimney.


              Louis L&R Western Railroad
              Pacific Northwest Logging in the East Coast

              Comment

              • #8
                Louis, Thanks that Fantastic information there and good pictures of a few different types.

                Bernd, Thats a great idea also. it would certainly help get the proportions right.

                I mentioned Rivet detail decals in another topic. I hope they turn up today so i can make a start on this project. Im looking forward to it.
                Owen Pass Lumber Company

                HO Logging Layout in a Shed.

                https://owenpass.blogspot.com/

                Comment

                • #9
                  Adrian,here is a pic of the boiler I cut down for my sawmill. It came from a old plastic 2-8-0 that had a old open frame motor in the tender powering the tender trucks.

                  It is 5.5' dia, the boiler is 8.5' long, the firebox is 5' long, and the smokebox is 5'

                  I cut out the course with the sand dome @ 4' and the course between the steam dome and the firebox @2.5'



                  Hope this gives you an idea.
                  Phil Z

                  POR (press on regardless)

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                  • #10
                    Hi Guys. Got stuck into some modelling over the weekend. I have built part of the boiler. using sheet brass and tube stock. So the main master is ready to add the detailing to. I think i might make a mould of it before i go to any detailing.

                    Thanks for all the info. It was enough to get me underway. Ill share some pics later when i get the time to snap some.
                    Owen Pass Lumber Company

                    HO Logging Layout in a Shed.

                    https://owenpass.blogspot.com/

                    Comment

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