X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m28.mx.aol.com ([64.12.137.9] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 911793 for flyrotary@lancaironline.net; Fri, 22 Apr 2005 19:19:02 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.9; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-m28.mx.aol.com (mail_out_v38.7.) id q.60.54263a99 (15886) for ; Fri, 22 Apr 2005 19:18:10 -0400 (EDT) Received: from mblk-d43 (mblk-d43.mblk.aol.com [205.188.212.227]) by air-id08.mx.aol.com (vx) with ESMTP id MAILINID81-3e0e42698631164; Fri, 22 Apr 2005 19:18:10 -0400 Date: Fri, 22 Apr 2005 19:18:09 -0400 Message-Id: <8C715A8AEA446C5-62C-9350@mblk-d43.sysops.aol.com> From: wrjjrs@aol.com References: Received: from 66.127.99.234 by mblk-d43.sysops.aol.com (205.188.212.227) with HTTP (WebMailUI); Fri, 22 Apr 2005 19:18:09 -0400 X-MB-Message-Source: WebUI X-MB-Message-Type: User In-Reply-To: X-Mailer: AOL WebMail 1.0.0.12132 Subject: Re: [FlyRotary] Re: All Parts have arrived, Whew! Content-Type: multipart/alternative; boundary="--------MailBlocks_8C715A8AEA446C5_62C_9E01_mblk-d43.sysops.aol.com" MIME-Version: 1.0 To: flyrotary@lancaironline.net X-AOL-IP: 205.188.212.227 ----------MailBlocks_8C715A8AEA446C5_62C_9E01_mblk-d43.sysops.aol.com Content-Type: text/plain; charset="us-ascii" George, It could be a clearance issue. Especially if the guy rebuilt an engine with a rotor with excessive apex seal clearance. It can be difficult to accurately measure small side clearances. I would suggest if you go to the local machine tool sales place and buy some adjustable parallels or "ball" guages to put in the slot and measure. The alternative is to check in with your local machinist's QC guy and measure the opening with guage blocks. Using a caliper is always subject to mistakes on the part of the operator! Then use a micrometer on the outside of the seals. When we are talking about a clearance of between .0005-.0015 inches is should be DIFFICULT to get the seals to go in. A clearance that small the seal should have to be aligned perfectly to go in. I bet a lot of the guys don't measure things at all and just toss the new parts in there! BTW I may have a good source for wire edm on the RX-8 rotor seal slot. One of my contracts runs a die making shop where most of their cutting is done in tool steels on the wire EDM. Bill Jepson Ed, Were the old housing junked because you spat the apex seals? I just got a report that one bloke in Victoria Aust is only getting 200 hrs out of new seals before they break - I wonder if it's the same problem? I'm pretty sure it is! George ( down under) ----------MailBlocks_8C715A8AEA446C5_62C_9E01_mblk-d43.sysops.aol.com Content-Type: text/html; charset="us-ascii"

George,

It could be a clearance issue. Especially if the guy rebuilt an engine with a rotor with excessive apex seal clearance. It can be difficult to accurately measure small side clearances. I would suggest if you go to the local machine tool sales place and buy some adjustable parallels or "ball" guages to put in the slot and measure. The alternative is to check in with your local machinist's QC guy and measure the opening with guage blocks. Using a caliper is always subject to mistakes on the part of the operator! Then use a micrometer on the outside of the seals. When we are talking about a clearance of between .0005-.0015 inches is should be DIFFICULT to get the seals to go in. A clearance that small the seal should have to be aligned perfectly to go in. I bet a lot of the guys don't measure things at all and just toss the new parts in there! BTW I may have a good source for wire edm on the RX-8 rotor seal slot. One of my contracts runs a die making shop where most of their cutting is done in tool steels on the wire EDM.

Bill Jepson

Ed,

Were the old housing junked because you spat the apex seals?

I just got a report that one bloke in Victoria Aust is only getting 200 hrs out of new seals before they break - I wonder if it's the same problem? I'm pretty sure it is!

George ( down under)

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