Quote:
Originally Posted by bfrank1972
FWIW I think I read somewhere in this thread somebody talking about 'spooling' with centrifugal superchargers. There's no such thing - they *do* build boost in an exponential fashion relative to RPM, but there's no lag associated with a belt driven centrifugal supercharger. Bring RPMS up to 6000rpm, and then put your foot in it, and you'll get sharp and immediate response from any of the belt driven centrifugal systems. Turbochargers are another story - a well matched turbo on our modern high compression engines will be responsive compared to the turbo systems of 'yesteryear', but the throttle response will never match a supercharger (it will always feel 'softer' on tip in).
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Sorry, that was me, and I chose the wrong word for it. You described what I meant though. I compare it to turbo spool time because you probably won't ever be cruising at 5k or 6k RPM, so it may take a second to get into the meaty portion of the power curve.
edit: removed that portion from my initial post so I don't confuse anyone.