Hi Randall,
The stats your quoting are from conventional "Roots" style
superchargers. The original Roots style were just air movers , the newer
designs compress the air as well creating more efficiency & power
through the full rpm range. The current design, Twin screw
blower/compressors are turning numbers of 70-80% adiabatic efficiency.
Lots more air moved with out high heat gains. They also suffer from less
parasitic power loss than older designs.
Turbo charging also has trade off's with exhaust backpressure robbing
some power and raising temps.
I agree that for maximum horse power in an all out war , turbo charging
will win because of higher attainable boost levels.
--
Mitch Seff
Oceanside, N.Y.
75 TR6
http://www.angelfire.com/ny4/triumph5/
|