Re: Superchargers

[Sean Reifschneider <jafo@tummy.com>]

>Sorry, could not help it (forgive me), too many (very bad mistakes in your
>post), I will only take care of the real bad ones (got to leave some for
>the boys to munch on you!)
>>Of course, a turbo constricts the exhaust, which doesn't help mileage
>>either.  However, Saab claims that their turbo cars are actually more
>>fuel efficient than a non-turbo engine producing the same power.
>A supercharged engine is MUCH more efficient than a naturally aspirated
>engine (a very basic internal combustion engine principal)

What (very bad) mistake did I make here?  I said that Saab said their
turbo engines were more efficient than a comperably sized engine without
it.  I have no research either way.

If you are arguing my statement that when idling, a SC is less efficient
than the same sized (not COMPERABLY sized) engine.  I have heard this
from other's with much more experience with SCs than I, and tend to
agree with it.  A supercharger without a bypass, driven by a belt,
is quite a drag on the engine.  Surely you wouldn't say that running
the Air Conditioner doesn't increase fuel consumption?

>>turbochargers can be balanced
>All turbos/superchargers are balanced at the factory, a turbo spins from
>100,000 to 300,000 RPM (depends on size) how do you figure one can get away
>with not BALANCING it?

HELLO!?!  If you quoted more than 4 words, it's quite apparent that I"m
not talking physically about the weight distribution on the turbine, but
rather ballencing the design requirements -- a small turbo that spools up
more quickly, versus a larger turbo that can generate more power at the
high end.  I am *WELL* aware that a turbo spins at over 100K RPM.

Perhaps "tune" would ahve been a better choice of words, but it was
apparent in the context I was using.

No offense intended, but is english your native language? 

>Well Sean, I let you off here, I could keep going a lot more since you made
>a lot of half statements in your post but I remembered that we all love
>each other on the list.

I would suggest that you get some humility...  Your message to me has
not demonstrated a lack on knowledge on my part, nor a superiority of
knowledge about this subject on your part.  I'm not interested in
debating which of us knows more about turbo versus supercharging -- it's
just that your post doesn't DEMONSTRATE it.

Enjoy,
Sean