X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao02.cox.net ([68.230.241.37] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 934130 for flyrotary@lancaironline.net; Thu, 05 May 2005 20:28:06 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.37; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao02.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050506002720.KIHE22430.fed1rmmtao02.cox.net@BigAl> for ; Thu, 5 May 2005 20:27:20 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Static MAP readings? Date: Thu, 5 May 2005 17:27:22 -0700 Message-ID: <002c01c551d2$5eed01e0$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002D_01C55197.B28E29E0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_002D_01C55197.B28E29E0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 It's a TB made by TWM induction; http://www.twminduction.com/ =20 BTW; Rusty, what diameter barrels on your TB? Mine are 44 mm (series = 3003), which could be great for automotive (street or racing), where idle transition and throttle response are more important. For aircraft I do believe that a bit larger would be better.=20 =20 Hi Al, =20 I've measured mine a number of times, and I recall that they're = essentially 1-5/8, which of course works out to about 41mm. The TWM site only lists = 40 and 42 for the 2900 series, so I'm not sure exactly which one I have. I = got it from Atkins originally, with the wrap over manifold, so I got = whatever he was sending out. =20 =20 I see they also list 45, 48, 50 and 55 mm in the 2900 series. See if they'll take a trade-in on yours for a 50 mm, and we'll see if it gives better performance. I'm sure you don't mind redoing your manifold :-). =20 Al=20 =20 ------=_NextPart_000_002D_01C55197.B28E29E0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

 

It’s a TB made by TWM induction; http://www.twminduction.com/

 

BTW; Rusty, what diameter barrels on your TB?  Mine are 44 mm (series = 3003), which could be great for automotive (street or racing), where idle = transition and throttle response are more important.  For aircraft I do = believe that a bit larger would be better. 

 

Hi Al,=

 

I've measured = mine a number of times, and I recall that they're essentially 1-5/8, which of course works out to about 41mm.  The TWM site only = lists 40 and 42 for the 2900 series, so I'm not sure exactly which one I = have.  I got it from Atkins originally, with the wrap over manifold, so I got = whatever he was sending out.  

 

I see they also list 45, 48, 50 and = 55 mm in the 2900 series.  See if they’ll take a trade-in on yours = for a 50 mm, and we’ll see if it gives better performance.  = I’m sure you don’t mind redoing your manifold J.

 

Al 

 

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