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Posted for "Bill Kennedy" <bill_kennedy_3@hotmail.com>:
Hmm, when I"m going x knots up hill on my bicycle, it's a lot different than
going x knots downhill in the same gear. I wonder if it's not the same thing
with the supercharger. If you're dumping the output rather than pressurizing
the intake system, it may not be causing that much drag on the engine.
Because for optimal efficiency, as the power demand changes, you want the
output and power drag from the supercharger to change. At the lower power
settings, you're still having to turn the supercharger at the fixed crank
ratio rpm. So, if you're turning 2400 rpms, the supercharger is still
turning at the ratio that it is geared or belted to turn whether you are at
15" MP or at 29" MP. That is inefficient and undesirable.
Walter
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