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...
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...
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
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...
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...
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...
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
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...
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...
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...
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...
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