Sender: "Marvin Kaye" <marv@lancaironline.net>
To: lml@lancaironline.net
Date: Mon, 14 Mar 2005 11:40:24 -0500
Message-ID: <redirect-792712@logan.com>
Received-SPF: none
 receiver=logan.com; client-ip=216.83.236.238; envelope-from=walter@advancedpilot.com
Mime-Version: 1.0 (Apple Message framework v619.2)
In-Reply-To: <list-792529@logan.com>
References: <list-792529@logan.com>
Content-Type: text/plain; charset=US-ASCII; format=flowed
Content-Transfer-Encoding: 7bit
From: Walter Atkinson <walter@advancedpilot.com>
Subject: Re: [LML] Re: supershargers


On Mar 14, 2005, at 10:04 AM, rickschrameck wrote:

  A Supercharger and a Turbocharger use about the same HP from the 
engine to
maintain Sea level HP to about 17,000.


Now, measure that at any partial throttle condition and you will find 
that they do not siphon the same HP.  The belt-driven systems 
experience the same problems as the gear-driven superchargers do in 
radials.  They drain a lot of HP and this drain is worse than the 
exhaust systems at any partial throttle position.  I operate two 
gear-driven supercharged engines and one exhaust-driven supercharged 
engine.  I have looked at the *measured* effects.

I do not sell either system.

I find the exhaust-driven system to be more efficient and have not 
found it to have any untoward operational or maintenance issues.

YMMV.

Walter