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Thread: Model Compressor---Maybe

  1. #201
    Join Date
    Mar 2008
    Location
    Barrie, Ontario, Canada
    Posts
    8,459

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    SUCCESS!!!! Today I finished the second set of valves on the model compressor so it would be double acting and proceeded to make a video of it blowing up a balloon and bursting it. I used my Rockerblock engine this time, because it has a slightly larger pulley on it than my overhead cam engine. In the first video, the balloon got bigger, and bigger, and bigger but refused to pop, and I figured anybody watching might go to sleep before it burst, so the first video link is a technical fail.--Second time around, I set up the tripod for my digital camera, put a new balloon in place, opened my office door so I wouldn't gas myself, and started the engine and then got out of the way and let it run. Great success with the second video!! You can see that I was able to use an o-ring drive belt and avoid buying a costly timing belt drive set-up or using a sprocket and chain that would have been to big for the job. You will see however that it's right on the ragged edge--the pulley actually stops and the belt drive slips momentarily during each revolution.
    https://www.youtube.com/watch?v=-_iqt3ecAZc
    https://www.youtube.com/watch?v=cTBajAJrRnU
    Brian Rupnow

  2. #202
    Join Date
    Mar 2008
    Location
    Barrie, Ontario, Canada
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    8,459

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    This is something really neat to see--Engine, running compressor, running steam engine.
    https://www.youtube.com/watch?v=Z0ANwIiTTAg
    Brian Rupnow

  3. #203
    Join Date
    Sep 2011
    Location
    Belgium
    Posts
    736

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    That is fantastic!

    ...and almost a perpetual motion machine too

    Congratulations.

  4. #204
    Join Date
    Mar 2013
    Location
    West coast of Canada
    Posts
    567

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    Great entertainment for a Friday morning. Sitting here drinking a coffee and watching you pop a balloon.
    Another great job with a successful ending.
    Larry

  5. #205
    Join Date
    Dec 2015
    Location
    Chilliwack, BC, Canada
    Posts
    3,611

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    OK, so now what can you run off the wobbler engine? I know you've easily got lots more stuff to extend this and really increase the Rube Goldberg Coefficient....

  6. #206
    Join Date
    Mar 2008
    Location
    Barrie, Ontario, Canada
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    8,459

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    Quote Originally Posted by BCRider View Post
    OK, so now what can you run off the wobbler engine? I know you've easily got lots more stuff to extend this and really increase the Rube Goldberg Coefficient....
    No, it's the law of diminishing returns. I had to run the engine faster than I am comfortable with to get enough air out of the compressor to just barely run the wobbler. This was simply something I had to "Try and see" before I tear the set-up down from my office side table. I will be tearing it all down now and restoring all the components to their shelves to set for the next millennia.
    Brian Rupnow

  7. #207
    Join Date
    Sep 2012
    Location
    Wellington county Ontario Canada
    Posts
    869

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    A thing of beauty Brian!
    As usual.
    Cheers,
    Jon

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