MAR34807@aol.com wrote:

 "With no reciprocating parts, the rotary engine enjoys the high RPMs
required. Next time you're driving a car with a piston engine and a
tachometer, see if that engine ever runs above 2500 RPM. Now take that same
basic engine and ask it to run at 4500 - 4800 RPM. Do you think its happy?
The rotary engine can run virtually indefinitely at 6500 RPM. There are no
reciprocating parts (pistons, connecting rods, valves, pushrods, lifters,
etc.) that have to change direction with every revolution. (At 4800 RPM, a
piston must stop, change direction, accelerate, decelerate and get ready to
stop again 160 times every second!!!)"

This sounds like it came from :

http://www.rotarymarine.com/New%20Pages/FAQ's.html
 
BTW it is not just RPM that kills an engine. It is the load it
is subjected to at that RPM. In other words the HP the engine
is required to put out.  People frequently over look this point.
The rotary still shines in this regard.

Paul Lamar
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

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