Twin Centrifugals VS Single

[Scott Flanagan]

Sorry I did not call you, I got caught up working on the car and I didn't
get your message until now, I did get rear ended today in Jenny, hit and
run too.  I'll tell you all about it tomorrow, I am going to sleep now, I
am kind of tired, I'll call you tomorrow when I get home, hopefully things
won't go too bad tomorrow, I hope not, wish me luck, 




Scott Flanagan
Mechanical Engineering Undergraduate
Georgia Institute of Technology, Atlanta, GA
gte861v at prism.gatech.edu, (404) 206-0380

On Fri, 13 Apr 2001, Matt Cramer wrote:

> At 10:34 PM 4/12/2001 -0700, you wrote:
> >I just flat don't like crank driven centrifugals because of the fact that
> >you have to go to a bazillion engine rpm to get any real boost. Mebbe a
> >variable ratio belt drive??? (Like from a snowmobile??)
> >
> >Greg
> 
> 	That's been done before.  Paxton used a belt drive like that on some 50's
> era cars.  Pretty complicated, but sounds workable.  You might even be able
> to use miniature planetary transmissions instead - I'm not sure what
> advantage that would have, but it might be able to transmit more power to
> the blower.
> 	Alternately, you could use twin Roots blowers.  Mostly, that's been done
> on oddball show cars, but there are some times it makes sense on a street
> or race car.  Here's one site with a Thunderbird using two Eaton screw-type
> superchargers off Super Coupes on a 351W:
> 
> http://www.geocities.com/toohighpsi/index.htm
> 
> 	The owner did it to save money, apparently - you can get Eaton
> superchargers used in a junkyard, and so the cost was less than an
> aftermarket blower kit.  The results are pretty impressive, too - over 650
> lb-ft of torque at the rear wheels!
> 
> Matt Cramer
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