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Return to: Steam Power |
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#Post#: 901-------------------------------------------------- |
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Dual Cylinder Lynx Boxer Engine |
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By: lynx wind Date: November 27, 2013, 1:39 pm |
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This is an engine I designed years ago and I never built. The |
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goal was to design as simple an engine as I could, fewest parts |
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and simplest machining. Many of the parts are one pass cut from |
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sheet aluminum. If anyone is interested I could develop the |
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plans with dimensions and explain a bit more. |
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The valve is a "bash valve" actuated by the momentum of the |
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piston's side to side motion flinging it into the "penny valve". |
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The engine uses a Scotch Yoke, so there is no wrist pin and the |
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pistons are thin. The engine's crankcase is sealed and can |
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contain a lubricant. Exhaust is by uniflow at the end of the |
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stroke. |
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The hardest part of this engine is machining the cylinder which |
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would need to be done at a machine shop from steel or cast iron. |
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Its not a good idea to make the cylinder from aluminum due to |
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its expansion when hot. |
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#Post#: 903-------------------------------------------------- |
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Re: Dual Cylinder Lynx Boxer Engine |
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By: burnit0017 Date: November 28, 2013, 6:26 am |
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Hi, looks great, I would like to try to fabricate it. The bash |
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valve solves the size scaling problem created by the spool valve |
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with the design I found. |
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I have all the parts needed to fabricate. Is it ok to use brass |
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pipes for the cylinders with a aluminum piston and silicone o |
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rings? |
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[img] |
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http://www.anotherpower.com/board/index.php?action=dlattach;topic=869.0;attach=… |
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So 1 inch bore, with a about a 2 inch stroke? |
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Can you post a better view of the bash valve. |
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Today I am starting to fabricate the cylinder end blocks for the |
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brass pipes. They should look like small hydraulic piston |
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cylinders. |
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#Post#: 904-------------------------------------------------- |
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Re: Dual Cylinder Lynx Boxer Engine |
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By: lynx wind Date: November 28, 2013, 6:59 am |
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You'll want a much shorter stroke for fast running and power. |
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Use teflon O-rings. A diagonal slice with a razor will allow |
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them to be installed. Brass for cylinders is good, aluminum |
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piston is perfect for lightweight. |
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Give me a few days to dimension the drawings and I will post on |
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the Lynx website as a fullsize pdf or I can email you. This |
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design will still require some precision machining. No way |
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around the fact that steam engines require precise machining to |
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work well. |
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#Post#: 906-------------------------------------------------- |
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Re: Dual Cylinder Lynx Boxer Engine |
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By: burnit0017 Date: November 28, 2013, 9:28 am |
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Hi, I purchased a edge finder, the conical point locates the |
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hole location really well. My skills are improving. 8) I am |
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ordering a mill end vise today. |
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I look forward to your update, Thanks for the help. Scotch |
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Boxer, nice marketing name??? Need 0.5 to 1 HP, that is all my |
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buck circuit can handle, 15 amps at 12 volts. |
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