Double Acting Wobbler Plans?

Discussion in 'Plans' started by bwal74, Jul 8, 2017.

  1. Jul 8, 2017 #1

    bwal74

    bwal74

    bwal74

    Active Member

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    Hi,

    I just stuffed my first attempt at a double acting wobbler. So, I think I need some actual plans instead of just winging it.

    I've searched this forum and the usual sites but I can't find anything.

    Any help would be appreciated (it's really going to bug me until I make one now).

    Thanks Ben.
     
  2. Jul 8, 2017 #2

    fcheslop

    fcheslop

    fcheslop

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  3. Jul 8, 2017 #3

    vederstein

    vederstein

    vederstein

    Must do dumb things....

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    The biggest trick to a wobbler is getting the port locations correct. If the print is any bit off or components don't fit just right, the steam admission and exhaust may be screwed up.

    When it comes to porting, I tend to ignore the plans to put the ports where they line up on the machine regardless of where the print says.

    This thread shows how I did it on a fairly large wobbler model.

    ...Ved.
     
  4. Jul 8, 2017 #4

    fcheslop

    fcheslop

    fcheslop

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    I like to use a simple jig as it saves the pain of incorrect holes and canbe reused
    The pic shows one for a single acting engine

    002.JPG
     
  5. Jul 9, 2017 #5

    bwal74

    bwal74

    bwal74

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    Thanks for the replies.

    I did manage to get it running for a short while this afternoon with some minor modifications and lots of oil.

    I drilled out the inlet ports and smoothed out the sliding faces. I haven't finished yet. I'm keen to make another with proper plans. I made this one with left overs from making the Tubal Cain single acting and no plans just a rough idea.

    Ben.

    DAWob1Face.jpg

    DAWob2Pedestal.jpg

    DAWob3Running.jpg

    DAWob4running.jpg

    DAWob5Running.jpg
     

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