Cylinder Passageway Designs with Slide Valve

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DesignerIn3D
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Cylinder Passageway Designs with Slide Valve

Post by DesignerIn3D » Wed Jul 21, 2021 1:49 pm

I'm working with a 1904 Baldwin cylinder drawings that provides the classic three views of the cylinder. I'm attempting to draw this in 3D CAD.
My question is regarding how the live steam passageway is designed/formed from a.) the inside edge of of the port to b.) the branch of the Y.
I see the internal walls between the live steam and exhaust and it would be nice to have one in the shop to examine.
Where might I might images or other 3D perspective drawings of these passageway areas? Do any exist in museums that are cross-section cut for display? Any laying around a junk pile somewhere?

Gra2472
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Re: Cylinder Passageway Designs with Slide Valve

Post by Gra2472 » Wed Jul 21, 2021 3:37 pm

Maybe order a casting from a live steam supplier and cut it apart with a bandsaw?
7.5" Allen Mogul
3 x 7.5" West Valley Baldwin Westinghouse Electrics
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G. Augustus
Monte Rio, Ca.

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Builder01
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Re: Cylinder Passageway Designs with Slide Valve

Post by Builder01 » Wed Jul 21, 2021 8:52 pm

Gra2472 wrote:
Wed Jul 21, 2021 3:37 pm
Maybe order a casting from a live steam supplier and cut it apart with a bandsaw?
Except, many cylinder castings do not have the ports cast in.

If you want to see how steam cylinders are ported, look at any mechanical drawings for them. if you are not able to read drawings, I'm not sure what to do to help you.

I made my cylinders from drawings, seemed pretty straightforward.

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SteveR
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Re: Cylinder Passageway Designs with Slide Valve

Post by SteveR » Wed Jul 21, 2021 9:25 pm

I have an Allen Models cylinder casting that is scrap. $50 plus shipping?
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Bill Shields
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Re: Cylinder Passageway Designs with Slide Valve

Post by Bill Shields » Wed Jul 21, 2021 9:41 pm

Is this a design exercise or something you are going to build?
Too many things going on to bother listing them.

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Marty_Knox
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Re: Cylinder Passageway Designs with Slide Valve

Post by Marty_Knox » Thu Jul 22, 2021 10:23 am

Do some real research - find a copy of a Locomotive Dictionary or Locomotive Cyclopedia.
They have the illustrations you are looking for.
Steamtown in Scranton has a cut away 0-6-0.

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ChipsAhoy
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Re: Cylinder Passageway Designs with Slide Valve

Post by ChipsAhoy » Thu Jul 22, 2021 12:45 pm

Designerin3d:
I have 3d drawing of a cylinder composed with OnShape in an *.stl format. It has all the passages and bosses on it. You may be able to open it and edit it or at least open it and view it. I drew it up based on the MEG Wendy design, which is only different from the Allen design in demension. After drawing it up I printed it out to use as a pattern to have two cast. In my case It was much cheaper, easier and basicaly pain free to purchase and use Allens. Steves are much improved over what Gene used to deliver (I have both). Pm me with your e-mail and I, hopefully, can forward it to you. If you are using OnShape I can give you direct access. I will try to post it here if I can figure out how.
Scotty

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ChipsAhoy
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Re: Cylinder Passageway Designs with Slide Valve

Post by ChipsAhoy » Thu Jul 22, 2021 4:39 pm

I converted these to JPEG to make it easy to copy and paste. that should give you a rough idea.
cyl1.jpg
cyl2.jpg

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Builder01
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Re: Cylinder Passageway Designs with Slide Valve

Post by Builder01 » Sat Jul 24, 2021 10:26 pm

I suspect the original poster is another tire kicker. Has not even been back to the forum since he first posted.

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ChipsAhoy
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Re: Cylinder Passageway Designs with Slide Valve

Post by ChipsAhoy » Sat Jul 24, 2021 11:28 pm

Thought it sounded kinda like a rudimentary question.

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NP317
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Re: Cylinder Passageway Designs with Slide Valve

Post by NP317 » Sun Jul 25, 2021 11:16 am

Builder01 wrote:
Sat Jul 24, 2021 10:26 pm
I suspect the original poster is another tire kicker. Has not even been back to the forum since he first posted.
Only 4 days ago. Give him a chance...
RussN

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