Francisco Ianetti in NC is selling super smooth and super hard Si
Nitride
(I think) ceramic apex seals that have a more or less unlimited life
for about
$1100 a set of six.

This is the same stuff used in turbo charger ball bearings and high
speed
machine tool ball bearings. Projected life in gen set rotary engines is
20,000 to 30,000 hours.  Here are some properties.

Paul Lamar

Okay Paul,

Here's a question.  If a rotary motor was made completely from ceramic,
could
we eliminate the coolant system all together?  We'd still need oil
coolers of course.

Chris Cosman

Only cost a couple of billion to find out. :) Would you like to make an investment? :)
Perhaps we can talk Bill Gates into investing in the program since he is now worth
1% of the US gross national product. Only Rockafellor(s?) Standard Oil had 
a higher percentage of the US gross national product back in 1890's before 
anti trust laws.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.