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Gordon
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    • Gordon
      Gordon replied to the thread Upshur's opposed twin engine.
      Look at the color diagram that I posted before. That shows the total cycle. What you have to look at is the 102 x 2 = 204 is the cycle...
    • Gordon
      Gordon replied to the thread Upshur's opposed twin engine.
      Does this help? It is confusing.
      • 1720026915950.png
      • 1720027050364.png
      • 1720027190318.png
    • Gordon
      Gordon replied to the thread Upshur's opposed twin engine.
      I build the engine several years ago and I also found that the cam hit the connecting rod if the timing was wrong and I also had to...
    • Gordon
      Gordon replied to the thread Upshur's opposed twin engine.
      This is from the original Upshur drawing. It hits if the timing is wrong.
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    • Gordon
      Gordon replied to the thread Upshur's opposed twin engine.
      I am not sure what the problem is with your engine but when I built that engine I found that if the cam hit the connecting rod the valve...
    • Gordon
      Gordon replied to the thread Metal 3D print.
      I have learned a lot. I still keep learning new tricks which make life easier. One of my big problems is when I place a new shape and I...
    • Gordon
      Gordon replied to the thread Metal 3D print.
      The biggest problem is trying to do too much. With 2D you would draw all of the holes on the sheet regardless of size but with 3D you...
    • Gordon
      Gordon replied to the thread Metal 3D print.
      I bought Alibre Atom last year and I watched a bunch of videos and started making drawings of an engine that I had 2D drawings for and...
    • Gordon
      Gordon replied to the thread Upshur's opposed twin engine.
      If you don't tell your son that you are feeling better maybe he will keep on mowing the lawn.
    • Gordon
      Gordon replied to the thread Spark plug boots.
      I have had pretty good luck making boots with a 3D printer using TPU filament. It took a few tries to get it right.
    • Gordon
      Gordon replied to the thread Upshur's opposed twin engine.
      1/4-32 is probably going to be a problem. That is not a common size. 1/4-20 and 1/4-28 but not 1/4-32
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