Spherical Piston Machine. FYI

[labman]

Hi All!

Here's a glimpse into the future if internal combustion engines. An excerpt from the overview:
"500 HP, 5 liter engine measures only 430x430x450 mm"

<http://www.yet2.com/app/list/techpak?id=36009&sid=90&abc=0>

ByeBye! S.

[mdahl]

Interesting!!
I googled and found more info,
http://www.yet2.com/app/list/techpak?id=36009&sid=360&abc=0&page=details
and a forum,
http://www.scienceagogo.com/ubb/ultimatebb.php?/topic/1/220.html
supposedly, this is a simple animation of a similar concept. http://www.ballpistonengine.com/demo/index.html

The idea is sound, but I wonder if the internal frictions and sealing issues will cause it to be non-practical as the rotary valves did (can't find a link, but the cam and valve are the same piece.)

[mdahl]

found it!
http://www.coatesengine.com/index.html
Talk about sexy. No more valve float.