Miata Mailing List: October 1997, Message #158
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From: 	Paul Turin <pturin@ssl.berkeley.edu>

Subject: Re: Electric Supercharger

Date: 	Wed, 1 Oct 1997 14:58:45 +0000



They said it draws 90A at startup, and 60A after. That's 1000W at startup,

720W continuous. At 746W/hp, it's under one hp. As far as the motor size

goes, don't think in terms of a 1hp induction motor like you would find in

your table saw. Motors like that are designed for continuous duty and high

load factors. A brush-commutated motor that will see low duty cycle use can

be built far smaller and lighter, although 30,000 rpm is nothing to sneeze at.



Paul Turin

Kaleva Design Inc.



At 11:08 PM 9/30/97 +0000, you wrote:

>On 9/30/97 14:36, Fletcher Blades (fblades@fanshawe.newzealand.ncr.com) 

>wrote:

>

>>And where is this electric energy coming from? 2 HP is 1500 Watts. Now,   

>>have you noticed how your engine slows down when you turn on your 120W   

>>worth of headlights? The alternator needed to make this electric energy   

>>would have to be pretty much the same size as the motor that uses it   

>>(generators and motors being essentially the same technology.)

>