That is a good idea.  482 F might be a little on the low side. Is
there anything
out there that might be higher temperature?

If the .125 liner is pressed in the side housings will hold it in place.

Paul Lamar

Hello Paul,

the path / track on the side housings of the OMC engine could be plasma
nitrided - a process with N2 + heat or something like that ...

Perhaps you can get in contact with Otto Scharft, Andrew F. Burke or Mike
Griffith. They are listed / named at Freedom Motors as consultants + were
related to the OMC R+D ...

With kindest regards

Frank Herfert


I had that idea too Paul, that is why I suggested using .125 SS sheet to make the liner in one of the original posts.

It would be stiff enough after forming and welding the ends. I would however think about welding a SS tube from the liner and out the exhaust and same for the intake to give material retention and blending the ports for better flow.

Then I guess we can just go with plain old iron apex seals, we can make them and the material is cheap. If it works them maybe exotic ones that have a longer life after all the testing and we are sure the design will work.

Also, Paul would you use a round port for the exhaust and intake ports or more of a oval port with the long side parallel to the apex seals
( side to side )?


Then end plates come into question, I know two piece will give us a longer life and it will be light, but sealing them can be difficult. I was thinking about mapping the side seal travel path, then cutting the path with the mill and then a SS insert but to a tight press fit. Freeze the SS and heat the aluminum and press the two together. That way the water cooling paths are not violated in any way. We just have to rely on the transfer of heat from the combustion chamber/rotor/oil to the SS to the aluminum thru conduction transfer.

David Mikesell

Here is an easy way to do it. Just bolt aluminum heat sinks on the hot
side of a steel trochoide. You don't no stinking cooling on the cold side :-)
The screws can be welded to the steel core. Same goes for the p-port
tube. The exhaust port and be flat and tapped for the flange bolts.
It will pretty much look like the OMC rotor housing.

Paul


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