Return-Path: <13brv3@bellsouth.net> Received: from [209.114.234.2] (HELO IPOfCard1.guest-tek.com) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3176317 for flyrotary@lancaironline.net; Sat, 17 Apr 2004 21:35:27 -0400 Received: from USDCLES112NB160 ([198.18.1.149]) by IPOfCard1.guest-tek.com (8.11.6/8.11.6) with SMTP id i3I1MVu06694 for ; Sat, 17 Apr 2004 21:22:31 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: intake ideas? & cooling Date: Sat, 17 Apr 2004 21:36:12 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004B_01C424C4.011A3060" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_004B_01C424C4.011A3060 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit One other advantage of the 'short intake' if your primary use is as a cross country cruiser. If you cruise at 8000 ft (75%) power or above and the trottle plate is wide open you should be able to add extensions upstream (toward the plenum) to tune the intake length and find the sweet spot. Hi Ken. Ed and I discussed this external tuning on the list back when I was thinking of using this short intake before. Right now, I have runners that are about 30 inches to the TB, then separate sceet tubing for each throat that extend another 15 inches or so to the bottom of the right rad duct. I think Ed decided that my best tuning might be at idle :-) Luckily, I'll have the luxury of just copying what works by the time I fly. You may have the luxury of buying something off the shelf pretty soon, from a name we know and trust :-) Rusty (sworn to secrecy) ------=_NextPart_000_004B_01C424C4.011A3060 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

One other advantage of the 'short intake' if your = primary use is=20 as a cross country cruiser.  If you cruise at 8000 ft (75%) power = or above=20 and the trottle plate is wide open you should be able to add extensions = upstream=20 (toward the plenum) to tune the intake length and find the sweet=20 spot. 

Hi=20 Ken.  Ed and I discussed this external tuning on the list back when = I was=20 thinking of using this short intake before.  Right now, I have = runners=20 that are about 30 inches to the TB, then separate sceet tubing for each = throat=20 that extend another 15 inches or so to the bottom of the right rad=20 duct.  I think Ed decided that my best tuning might be=20 at idle :-) 


Luckily, I'll have the luxury = of just=20 copying what works by the time I fly.

You may = have the luxury=20 of buying something off the shelf pretty soon, from a name we know and=20 trust :-) 
 
Rusty (sworn to = secrecy)
 
 



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