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Philip Duglos Oddball Hit &Miss six Stroke Engine

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Roger B:
Looks to be a fun project, I will be following along  :)  :)  :wine1:

I guess that this design allows for extra expansion of the fuel mixture, which gives a similar effect to the Atkinson cycle  :thinking:

wbernhard:
Regarding the answer from "crueby"
"Did a bit of searching on 6 cycle engines - what I found was that they take an extra revolution and fire a second time to more completely burn some un-burnt gasses left in the cylinder from the main firing. So, it does intake/compress/fire/exhaust on the first two revolutions, then compress/fire again on the third revolution, then starts over again."

After looking at Phillip Duclos's drawings, my conclusions are as follows:
Based on the shape of the exhaust valve cam and the crankshaft-to-camshaft ratio of 3:1, I conclude the following:
The engine simply makes an additional third revolution with the exhaust valve open. With the exhaust valve open, it can neither draw in nor generate compression. It won't fire a second time either! Why should it?

Best regards, Charly

rdean33422:
This is my 6 cycle double acting engine I completed a while back.
http://www.youtube.com/watch?v=jmu07b3MqHA

It does operate like Charly said but it does suck in air and blow it out during the 5 and 6 cycles..

Ray

Bruno Mueller:
I made the next parts.
The bronze bushings are due to arrive next week.
I still have to make the crank bolt.  The crankshaft axles made of 1.7225 (42CrMo4) were pressed in with Loctite 638.
I plan to start the engine with a round pulley and starter cord. That's why there are no claws on the flywheel axle.

After the two flywheels were finished, I had to clean the lathe and the surrounding area from the gray cast iron dust.

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