Received-SPF: none
 receiver=logan.com; client-ip=65.174.123.181; envelope-from=archerw@ubtanet.com
From: "Todd Archer" <archerw@ubtanet.com>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: why a 4 port?
Date: Sat, 14 May 2005 21:30:16 -0600
Message-ID: <003901c558fe$696f0c70$0400000a@archer>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
In-Reply-To: <list-944482@logan.com>
Importance: Normal

Thanks, Charlie.

Found this after a quick look:
"The additional, or auxiliary ports open at about 6250 rpm. There is
also an additional air intake duct for the high output engine. It will
open at about 7250 rpm. Both engines now have three fuel injectors per
rotor."

So I guess that makes sense although I thought Tracy is looking at a
target rpm of 7500 for his 4 port.

Thanks,
Todd


Bruce T's explanation last fall at Tracy's (if I heard him correctly)
was that in the car the addtl ports don't open until a higher rpm than
anyone will run in an airplane (except Rusty when he installs one to
avoid another turbo, of course).

Charlie

> 
> From: "Todd Archer" <archerw@ubtanet.com>
> Date: 2005/05/14 Sat PM 10:48:36 EDT
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: Is Tracy a 4 or 6 port Renesis?
> 
> Tracy's Renesis is definitely a 4 port.  I confirmed that when I
looked
> over the "Renesis Project" segment of the website.  
> 
> What I have not found is a decent explanation of why Tracy went with
the
> 4 port over the 6.  I know he didn't just shove in the first Ren he
got
> his hands on.  I'm sorry if I missed it somewhere but could anyone
> explain his thinking?
> 
> Thanks,
> Todd
>