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    Atkinson engine

    Just to clarify..... I have designed and made several Atkinson cycle engines.... The video I posted above is my 10" flywheel casting kit. Aluminum castings and prints. All my Mini engines at made from bar stock. Plans only. If you do a search on youtube for "Dave Perreault Atkinson engine...
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    Atkinson engine

    I have plans and casting kit that I sell.... I have one casting kit left ....
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    Atkinson engine

    Nice... Glad to see people are still interested in this James Atkinson engine! This is my Atkinson Differential engine that I designed and built.
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    Oring for piston in an IC engine

    Hi everyone, I have built several IC model engines many of them Atkinson engines. I am currently designing and building a twin Atkinson engine and concidering using an oring instead of using cast iron rings like I normally do. The bore on the cylinders is 1" diameter. I was wondering if anyone...
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    Another Atkinson Differential build

    I was getting worried that you folks had some health issues going on! So glad to hear everyone is doing well! Have a great Christmas and New Year Dave Perreault and family
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    Another Atkinson Differential build

    That is a bummer Ken! Hope you find it soon!
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    Another Atkinson Differential build

    Hello, all... I have designed and built the Atkinson Differential engine with valves on my 10" flywheel engine and it uses 2 atmospheric valves on it.... For intake and exhaust. The Mini A a half scale version of the Atkinson Differential engine that I have designed and built it does not use...
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    Another Atkinson Differential build

    While that will work .... If you want more compression just move the the left piston further to the by .010 I would proceed with caution.... You may be giving yourself more work. My engine design does work with the chamfers as specified and the pistons at .055 apart from each other TDC. If you...
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    Another Atkinson Differential build

    I thought I would share this email that I sent to Ken. It is in reference to the Mini A and the piston locations at TDC and the distance between them. Good morning Ken! After thinking about this I believe this is the best way to give you this information. To start with..... I want to make...
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    Another Atkinson Differential build

    Hi Gordon, in my experience 3 hours is a good amount of time and if you are not getting anywhere in the positive direction something is off and you need to scratch your head a little. IMHO
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    Another Atkinson Differential build

    Hi guys, a few comments before someone quoted me as saying about getting the Mini A to run for the first time. "After turning it over with the electric motor for 3 hours if it doesn't run on it's own you need to stop and check everything as you missed something" I want to make sure I get this...
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    Another Atkinson Differential build

    Hi Ken, ring pressure on cylinder wall is very critical.... It wants to be a free ring gap on the Mini A should be about .060 ( that is the gap when the ring is out in free air) And a ring gap of .001 when in the cylinder. Too much ring pressure will increase the friction of the pistons...
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    Another Atkinson Differential build

    Hi, the slide valve design on the Mini A is my approach to simplify the build as making an intake and exhaust valve for this scale would be very hard for the average home builders. This is a half scale model of my 10" flywheel casting kit that I have available. The valves are .312 diameter so at...
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    Another Atkinson Differential build

    Hi guys.... This is a segment of an email conversation with Ken about getting the engine to run. Thought it might be of interest to someone. From Dave Perreault Getting the Mini A engine to run. Fuel - In the plans I have provided some guidelines as to how to get the engine to run. You must...
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    Another Atkinson Differential build

    Hi, this is Dave Perreault..... Thank you for all the interesting conversation about my Mini A Atkinson Differential engine.... I thought I would put a like to the engine running video. Thanks Dave
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