X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from bay0-omc1-s30.bay0.hotmail.com ([65.54.246.102] verified) by logan.com (CommuniGate Pro SMTP 5.1c.2) with ESMTP id 1330725 for flyrotary@lancaironline.net; Mon, 31 Jul 2006 17:38:31 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.54.246.102; envelope-from=lors01@msn.com Received: from hotmail.com ([65.54.250.83]) by bay0-omc1-s30.bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.1830); Mon, 31 Jul 2006 14:36:11 -0700 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 31 Jul 2006 14:36:11 -0700 Message-ID: Received: from 4.171.114.26 by BAY115-DAV11.phx.gbl with DAV; Mon, 31 Jul 2006 21:36:10 +0000 X-Originating-IP: [4.171.114.26] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Back in the saddle again! Date: Mon, 31 Jul 2006 17:36:05 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00EF_01C6B4C7.CD1031C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.20.0029.3000 Seal-Send-Time: Mon, 31 Jul 2006 17:36:05 -0400 X-OriginalArrivalTime: 31 Jul 2006 21:36:11.0295 (UTC) FILETIME=[57605AF0:01C6B4E9] Return-Path: lors01@msn.com This is a multi-part message in MIME format. ------=_NextPart_000_00EF_01C6B4C7.CD1031C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Jason, I don't know this for a fact but there should be minimal length of any = flexible hose in the intake runners. The pulse amplitude in the runners = is surprisingly high and the flexible tube may act as a damper as it = flexes and destroy tuning effects. You might try different length metal = runners and couple them with short pieces of hose. Let us know the results! Tracy ----- Original Message -----=20 From: Hutchison, Jason=20 To: Rotary motors in aircraft=20 Sent: Sunday, July 30, 2006 10:07 AM Subject: [FlyRotary] Re: Back in the saddle again! Ed, =20 I am using 1 =BE secondary and 1 =BD primary tubes. That is what = matched the port size on the engine (when deformed to the oval shape of = the port). The lengths of the runners are eight inches from the side of = the engine. The runners terminate into a 4" manifold log and a 65 or 70 = mm T/B. My plan is to build a new manifold log with velocity stacks and = then experiment with different length radiator hose for runners. I know = this is not optimal for flow but it should get me in the ballpark = quickly. Any suggestions are appreciated.=20 =20 Thanks, Jason ------=_NextPart_000_00EF_01C6B4C7.CD1031C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Jason,

I don't know this for a fact but there should be minimal = length of=20 any flexible hose in the intake runners. The pulse amplitude in = the=20 runners is surprisingly high and the flexible tube may act as a damper = as it=20 flexes and destroy tuning effects. You might try different length = metal=20 runners and couple them with short pieces of hose.

Let us know the results!

Tracy

----- Original Message -----

From: Hutchison, = Jason=20

To: Rotary motors in = aircraft

Sent: Sunday, July 30, 2006 = 10:07=20 AM

Subject: [FlyRotary] Re: Back = in the=20 saddle again!

Ed,

I am using = 1 =BE=20 secondary and 1 =BD primary tubes. That is what matched the port size = on the=20 engine (when deformed to the oval shape of the port). The lengths of = the=20 runners are eight inches from the side of the engine. The runners = terminate=20 into a 4" manifold log and a 65 or 70 mm T/B. My plan is to build a = new=20 manifold log with velocity stacks and then experiment with different = length=20 radiator hose for runners. I know this is not optimal for flow but it = should=20 get me in the ballpark quickly. Any suggestions are appreciated.=20

Thanks,

Jason

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