X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail17.syd.optusnet.com.au ([211.29.132.198] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTPS id 2185923 for flyrotary@lancaironline.net; Wed, 18 Jul 2007 17:45:07 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.198; envelope-from=lendich@optusnet.com.au Received: from george (d211-31-198-223.dsl.nsw.optusnet.com.au [211.31.198.223]) by mail17.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id l6ILiKm1013885 for ; Thu, 19 Jul 2007 07:44:22 +1000 Message-ID: <002301c7c984$ced21910$dfc61fd3@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: End Housings Date: Thu, 19 Jul 2007 07:44:22 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0020_01C7C9D8.9F542800" 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-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0020_01C7C9D8.9F542800 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Lynn, A quick question! The side inlets in the cast end-housings, have a reducer ( = reduction in inlet size) of approx 2mm ( all round) just after the = opening. This reducer ( reduced area) carries through to the housing = face where it changes to the face shape. Does this reducer act as a choke of the inlet charge. I've had = advice that it doesn't do anything but wonder why it's there? George ( down under)=20 Its just to account for production variations in the castings. There = are no dowel pins to locate the intake manifold. Just the loose fit on = the mounting studs.=20 So, there will never be a sharp corner sticking out into the flow from = the manifold. An effective fix, but a poor solution power wise.=20 Lynn E. Hanover Thanks Lynn, As I assumed, it's not a reducer but the opening is made a little = bigger, to accommodate poor fit. Thanks Again! George (down under) -------------------------------------------------------------------------= ----- Get a sneak peek of the all-new AOL.com. ------=_NextPart_000_0020_01C7C9D8.9F542800 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Lynn,
A quick question!
The side inlets in the cast = end-housings,=20 have a reducer ( reduction in inlet size) of approx 2mm ( all = round) just=20 after the opening. This reducer ( reduced area) carries through to = the=20 housing face where it changes to the face shape.
Does this reducer act as a choke = of the inlet=20 charge. I've had advice that it doesn't do anything but wonder why = it's=20 there?
George ( down=20 under) 
Its just to account for production variations in = the=20 castings. There are no dowel pins to locate the intake manifold. Just = the=20 loose fit on the mounting studs.
 
So, there will never be a sharp corner sticking = out into the=20 flow from the manifold. An effective fix, but a poor solution power = wise.=20
 
Lynn E. Hanover
 
Thanks Lynn,
As I assumed, it's not a reducer but the opening = is made a=20 little bigger, to accommodate poor fit.
Thanks Again!
George (down = under)



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