X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.25.9.102] (HELO ms-smtp-03-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 892617 for flyrotary@lancaironline.net; Thu, 22 Dec 2005 12:03:46 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.102; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-025-165.carolina.res.rr.com [24.74.25.165]) by ms-smtp-03-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id jBMH30fU023831 for ; Thu, 22 Dec 2005 12:03:00 -0500 (EST) Message-ID: <000901c60719$948181d0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Intake manifold Design with Super Charger Date: Thu, 22 Dec 2005 12:03:06 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01C606EF.AB4E8CC0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C606EF.AB4E8CC0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable A supercharger/turbocharger generally ensures that your engine will = receive more air than an NA engine regardless of the intake. = However,some things to keep in mind: 1. The losses encountered in an intake under NA conditions will be even = higher under supercharged conditions. 2. Unless you are running under boost all the time, at some times you = would be running essentially NA. ( No experience with a supercharger, = but some with cars using turbochargers). 3. Longer intakes are generally more suited for getting more torque at = lower rpms which with a supercharger is pretty much a non-issue. =20 4. If the intake is otherwise clean and straightforward then the = difference between 12" and 8" is probably insignificant with forced = induction. FWIW Ed A . ----- Original Message -----=20 From: Bobby J. Hughes=20 To: Rotary motors in aircraft=20 Sent: Thursday, December 22, 2005 11:30 AM Subject: [FlyRotary] Intake manifold Design with Super Charger Need a few opinions. Are intake runner lengths important (13" vs 8") = if I am running a Super Charger. I have been struggling to build a clean = intake with 12-13" runners that will clear the cowl. 8" would be much = simpler.=20 Thanks, Bobby ------=_NextPart_000_0006_01C606EF.AB4E8CC0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
A supercharger/turbocharger generally ensures = that your=20 engine will receive more air than an NA engine regardless of the = intake. =20 However,some things to keep in mind:
 
1.  The losses encountered in an intake = under NA=20 conditions will be even higher under supercharged = conditions.
2.  Unless you are running under boost all = the time,=20 at some times you would be running essentially NA. ( No experience = with a=20 supercharger, but some with cars using turbochargers).
3.  Longer intakes are generally more = suited for=20 getting more torque at lower rpms which with a supercharger is pretty = much a=20 non-issue. 
 
4.  If the intake is otherwise clean and=20 straightforward then the difference between 12" and 8" is probably = insignificant=20 with forced induction.
 
FWIW
 
Ed A
.
 
----- Original Message -----
From:=20 Bobby J. = Hughes=20
Sent: Thursday, December 22, = 2005 11:30=20 AM
Subject: [FlyRotary] Intake = manifold=20 Design with Super Charger

Need = a few=20 opinions. Are intake runner lengths important (13" vs 8")  if I = am=20 running a Super Charger. I have been struggling to build a clean = intake=20 with 12-13" runners that will clear the cowl.  8" would be much = simpler.=20
 
Thanks,
 
Bobby
 
 
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