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  • Jasonb
    Jasonb replied to the thread Upshur's opposed twin engine.
    Finally, this is the camshaft for an opposed twin Briggs I have marked where the cams ar at 102deg. If you were to swap the two...
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  • Jasonb
    Jasonb replied to the thread Upshur's opposed twin engine.
    Here you go. Cams on this engine maybe 110deg apart but as they are out in the open it shows that is what works. If you are not...
  • Jasonb
    Jasonb replied to the thread 36x60x54 Twin Tandem Mill Engine.
    I don't see any Corliss valves for this engine Pat all the same spool valves Quite possible they used two on the LP due to the larger...
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    • DSC04643.JPG
  • Jasonb
    Jasonb replied to the thread Upshur's opposed twin engine.
    You are mixing crankshaft angle (40 and 15) with camshaft angle (102). And also mixing teh timing diagram from one engine with the cam...
  • Jasonb
    Jasonb replied to the thread Upshur's opposed twin engine.
    First thing to say is that the images Gordon posted are from more than one engine. But the 102 deg is from the Upshur, the timing...
  • Jasonb
    Jasonb replied to the thread Stuart Twin Oscillator build.
    I would say 1/16" dia x 1/4 deep eg to meet the 1/8" hole from the other side in the middle. Then counterbore 3/32" x 1/16" deep
  • Jasonb
    Jasonb replied to the thread 36x60x54 Twin Tandem Mill Engine.
    Heads (end covers) and pistons are flat so need the bracing webs much like the end plates of a boiler or sides of a firebox need stays...
  • Jasonb
    Jasonb replied to the thread 36x60x54 Twin Tandem Mill Engine.
    Maybe the webs around and along the boiler were simply crinolines to support the cleading and not intended to be structural
  • Jasonb
    Jasonb replied to the thread Back yard foundry casting iron..
    Fancy Chaps those. The smaller caster can get away with a couple of old style cut nails as seen here poking out the bottom of this...
    • chaps.JPG
  • Jasonb
    Jasonb replied to the thread 36x60x54 Twin Tandem Mill Engine.
    Incoming pressure does not control the speed, it determines the work the engine will do. The more pounds applied to the area of the...
  • Jasonb
    As said low speed is the key be it the hole type, single, 3 or multiple flutes. Mild steel
  • Jasonb
    Jasonb replied to the thread Upshur's opposed twin engine.
    They should not be hard to make, turn a bit of brass down to size and run a die down it in the lathe. Brass is easy to machine and...
    • 20240702_144312.jpg
  • Jasonb
    Jasonb replied to the thread 36x60x54 Twin Tandem Mill Engine.
    As I read it the steam enters via the central smaller round flange and the passages take it to each valve. The exhaust from the two...
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  • Jasonb
    Jasonb replied to the thread 1/4 scale Anzani Fan Engine.
    The W type that Mike Cole used to do castings for just had flat edges to the knife and two fork ends. They were steel and ran against...
    • wtype ass.JPG
  • Jasonb
    Jasonb reacted to Bazzer's post in the thread Metal 3D print with Like Like.
    What is on the table (6 parts) is £1200 Timeline is probably 6 to 8 weeks for submission of final design.
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