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  • coulsea
    My Upshur twin uses one cam lobe for both intake valves and the other lobe for both exhaust. plans are dated 2001.
  • coulsea
    coulsea replied to the thread Bore stroke ratio.
    I had looked at a few plans before designing my own open crank hit and miss engine and the average seemed to be a stroke of 1.6 times...
  • coulsea
    coulsea replied to the thread Hold a gear for cutting?.
    A small amount of error really shows on a gear with small teeth. everything has some degree of error so it is best to eliminate any...
  • coulsea
    coulsea replied to the thread Making a model Cannon.
    I have cast the cannon in aluminium bronze from the pattern that i posted earlier. Now i have to do the carriage.
    • IMG_2327.JPG
  • coulsea
    coulsea replied to the thread Making a model Cannon.
    I am going to cast a cannon in the next couple of days, I have drawn up a pattern and printed it on a 3d printer, given it a couple of...
    • IMG_2326.JPG
  • coulsea
    coulsea replied to the thread flywheel stl files.
    I am assuming that it is aluminium bronze, it comes from wear plates on a caterpillar grader. It machines OK providing you cut with a...
  • coulsea
    coulsea posted the thread flywheel stl share in 3-D Printers.
    I have posted some stl files in the foundry and casting section
  • coulsea
    3d printers are great for making patterns but files seem to be hard to find, so I thought that I should share mine. The smaller...
    • IMG_2325.JPG
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