X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wproxy.gmail.com ([64.233.184.193] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 973626 for flyrotary@lancaironline.net; Tue, 07 Feb 2006 13:32:10 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.233.184.193; envelope-from=russell.duffy@gmail.com Received: by wproxy.gmail.com with SMTP id 69so1316342wra for ; Tue, 07 Feb 2006 10:31:24 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:from:to:subject:date:message-id:mime-version:content-type:x-priority:x-msmail-priority:x-mailer:importance:x-mimeole:in-reply-to; b=TpghzweACze45ne29uGVOAebYqqaiLOWe/AK2CaTvnGz5y17eEm8OlrKT+z5MgWGa8jhF6VqW7orn0AxXXW1QQO+9/EMPXsuQIrXQ5GEiMoTOMS7QHFb7aOkQyLiJFHDcsa56OKuf4DGo+feCVMXwNCtEx0RhBAT5v0a8i03WxM= Received: by 10.54.92.6 with SMTP id p6mr814585wrb; Tue, 07 Feb 2006 10:31:24 -0800 (PST) Return-Path: Received: from rd ( [65.6.194.9]) by mx.gmail.com with ESMTP id 27sm691328wrl.2006.02.07.10.31.20; Tue, 07 Feb 2006 10:31:24 -0800 (PST) From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Tension bolt coolant leak; was Torque and torque sequence Date: Tue, 7 Feb 2006 12:31:20 -0600 Message-ID: <016401c62c14$b326f280$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0165_01C62BE2.688C8280" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0165_01C62BE2.688C8280 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I have never disassembled a rotary engine, so in my further thinking regarding the coolant drip from around the un-torqued tension bolt; = perhaps someone would clarify something for me - does the tension bolt anywhere = run through the cooling jacket? I had assumed it did (why else are there = seals under the bolt heads, but in looking at photos of housings, and cut-away views, it appears not. Would this mean then that there is/was a leak somewhere between the coolant jacket and the bolt hole?=20 =20 Hi Al, =20 The tension bolts do not run through cooling jackets, but it would seem = that the area between the inner, and outer O-rings are not completely sealed. = In other words, coolant can seep from the jackets into the bolt holes, particularly when under pressure. This would be even worse in an area = where the bolts aren't tight. =20 =20 Cheers, Rusty =20 ------=_NextPart_000_0165_01C62BE2.688C8280 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
I have = never=20 disassembled a rotary engine, so in my further thinking regarding the = coolant=20 drip from around the un-torqued tension bolt; perhaps someone would = clarify=20 something for me – does the tension bolt anywhere run through the = cooling=20 jacket?  I = had=20 assumed it did (why else are there seals under the bolt heads, but in = looking at=20 photos of housings, and cut-away views, it appears not.  Would this = mean=20 then that there is/was a leak somewhere between the coolant = jacket and the = bolt=20 hole? 
 
Hi=20 Al,
 
The tension=20 bolts do not run through cooling jackets, but it would seem = that the=20 area between the inner, and outer O-rings are not completely = sealed.  In=20 other words, coolant can seep from the jackets into the bolt holes, = particularly=20 when under pressure.  This would be even worse in an area = where the=20 bolts aren't tight.   
 
Cheers,
Rusty
 
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