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Thread: A Blast from the Past--Radial Engine

  1. #1
    Join Date
    Mar 2008
    Location
    Barrie, Ontario, Canada
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    9,483

    Default A Blast from the Past--Radial Engine

    I had lost my 3D cad files of the Webster engine due to a computer crash, so last night I went thru about 100 old CD Roms hoping I had saved it to a disc. I never found it, but I did find a disc with all of the files to a radial engine I had built about 10 years ago. This is an amazing little engine which runs on compressed air, and is fun to build and to run. I am attaching a picture of the cad file I found last night, and a free download link to the drawings.--Have fun.---Brian
    http://www.mediafire.com/file/uzhvza...ngine.zip/file
    Brian Rupnow

  2. #2
    Join Date
    Dec 2015
    Location
    Chilliwack, BC, Canada
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    Default

    That's a really nice looking engine. I've downloaded your file and looked at a few of the pages already.

    Just wondering from looking at the 3D and the first couple of drawings. For added giggles would it take a lot of work to convert it to a rotary setup?

    I'm thinking the crank gets fixed to the vertical post of the stand. The cylinders with the star plate would become their own flywheel. You've already got the air flowing up through the star plate. So it would only require that the plate be a bit thicker or use a pressed in longer bearing boss for added support and to hold a couple of seals. Might make for an interesting variant?

  3. #3
    Join Date
    Dec 2018
    Posts
    341

    Default

    Brian, that is cool.
    How did you know I was about to ask you about radials??
    You have built so many engines I was about to ask you about this:
    http://www.agelessengines.com/

  4. #4
    Join Date
    Mar 2008
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    Default

    Ringo--the engines in that link you posted are far more complex than the little radial I built.---Brian
    Brian Rupnow

  5. #5
    Join Date
    Mar 2008
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    Barrie, Ontario, Canada
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    BCRider--If you think you can do it, then by all means do. It was over ten years ago that I built that, and without setting my head on fire I don't know if what you are suggesting is possible or not.
    Brian Rupnow

  6. #6
    Join Date
    Mar 2008
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    Barrie, Ontario, Canada
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    Default

    A video of the engine running---
    https://www.youtube.com/watch?v=dib1JCKUmAc
    Brian Rupnow

  7. #7
    Join Date
    Jul 2007
    Location
    West Michigan
    Posts
    2,992

    Default

    Brian,

    Have you ever considered building a turbine engine? I am just fascinated with them.

    Another Brian
    OPEN EYES, OPEN EARS, OPEN MIND

    THINK HARDER

    BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

    MY NAME IS BRIAN AND I AM A TOOLOHOLIC

  8. #8
    Join Date
    May 2015
    Location
    Somerset UK
    Posts
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    Default

    Before the war, the Bristol aero company made some 3 cylinder radials, they do look weird.

  9. #9
    Join Date
    Mar 2008
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    Default

    Turbo engines don't interest me much. I like old school industrial revolution stuff.
    Brian Rupnow

  10. #10
    Join Date
    Dec 2015
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    Chilliwack, BC, Canada
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    I love the bubble machine ! ! It must be a real hit if you're demoing any of your "steam" engines outside.

    I'm shamed to admit that I've yet to build any sort of engine. But I'm keen to start if I can clear up any number of other things. I think I need a warmup. And making ONE cylinder of this engine to start with and learn the "tricks" would be a good start. Then the radial or rotary.... or maybe both sitting on the same board..... OK, now I'm leaping ahead again.

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