Hi

I received this in my work email, pretty cool. http://pixelbark.com/13045/how-the-duke-engines-increases-the-efficiency-of-t...

Steve

holy shit! its just like a AC compressor layout. like a minigun.

Here is another well established reciprocating piston engine where the crank has been replaced.

http://www.revetec.com/technology.htm 

same basic design as a variable displacement piston pump from hydraulics.
looks very interesting though

I wondered what happened to revetec, I went to a demonstration night in their premises years ago, they were using Subaru motors and Haltec injection, coincidently Haltec are in their old building

What a lot of end thrust!

Probably good for aircraft/boats.

Very interesting.
The other one I saw a year or two ago ( sorry I cannot link to it) was similar.
Where the power of this one efficiently rotated the other cylinders into position.
This other engine was horizontally opposed but when one cylinder ingnited it blew the other one away charging it. It was a little 2 cylinder.
I am sure someone will be able to correct my poor memory on this one though.

That is pretty cool, i'd like to know how they seal all the "chambers" exhaust intake power etc.. Probably has seals like a rotaries apex seals.

That is cool!
Trust the kiwis ... they can think outside the box.

interesting motor, I wonder what redline would be