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 5.0.8) with ESMTP id 990177 for flyrotary@lancaironline.net; Sat, 18 Feb 2006 12:47:34 -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 (8.13.4/8.13.4) with SMTP id k1IHkkZb005252 for ; Sat, 18 Feb 2006 12:46:48 -0500 (EST) Message-ID: <001401c634b3$0a9030d0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Another Turbo? Date: Sat, 18 Feb 2006 12:45:00 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0011_01C63489.216B93A0" 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_0011_01C63489.216B93A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageConsidering the turbine may be spinning 100,000 rpm (or more), = not too surprising that a fragment might get thrown back into the = exhaust port even against the gas flow. I've not heard of that = happening often, but then all John needs is one try. {:>) Ed ----- Original Message -----=20 From: Todd Bartrim=20 To: Rotary motors in aircraft=20 Sent: Saturday, February 18, 2006 12:41 PM Subject: [FlyRotary] Re: Another Turbo? Yea, I'm starting to remember something about this now, as I was = quite surprised at the time that the fragment from the exhaust turbine = had gone back up into the engine. An intercooler won't help you there = and a screen isn't possible either. But really what are the odds that = this would happen (I mean for anyone other than John" Turbo Killer" = Slade)? Was this just an anomaly or is this a common failure. Some of = you follow some of the rotary auto racing lists, have you heard of this = type of failure before? I guess what I'm asking is this something us turbo guy's should = worry about and if so is there anything we can do about it? Todd (need to turn off the Olympics and get back to building my = shop) -----Original Message----- From: Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net]On Behalf Of John Slade Sent: Saturday, February 18, 2006 7:45 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Another Turbo? As for strainers, I don't believe John's blown turbo had any damage = on the compressor side. IIRC, he believes the turbine side somehow = through a piece back into the engine. I'm confident that he'll correct = me if I got that wrong :-)=20 Which turbo are we talking about? The second turbo sent turbine fragments back into the exhaust port = and took out an apex seal. This cost me a housing, a set of seals and a drive to North = Carolina. I'm pretty confident that there was no engine damage from this = current failure where a turbine blade broke off. Yes, I do have an intercooler. John (off to install the big one) ------=_NextPart_000_0011_01C63489.216B93A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Considering the turbine may be spinning 100,000 = rpm (or=20 more), not too surprising that a fragment might get thrown back into the = exhaust=20 port even against the gas flow.  I've not heard of that happening = often,=20 but then all John needs is one try. {:>)
 
Ed
----- Original Message -----
From:=20 Todd = Bartrim=20
Sent: Saturday, February 18, = 2006 12:41=20 PM
Subject: [FlyRotary] Re: = Another=20 Turbo?

    Yea, I'm starting to remember something = about this=20 now, as I was quite surprised at the time that the fragment from the = exhaust=20 turbine had gone back up into the engine. An intercooler won't help = you there=20 and a screen isn't possible either. But really what are the odds that = this=20 would happen (I mean for anyone other than John" Turbo Killer" Slade)? = Was=20 this just an anomaly or is this a common failure. Some of you follow = some of=20 the rotary auto racing lists, have you heard of this type of failure=20 before?
    I guess what I'm asking is this something us = turbo guy's=20 should worry about and if so is there anything we can do about=20 it?
 
Todd    (need to turn off the Olympics and get = back to=20 building my shop)
-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of John=20 Slade
Sent: Saturday, February 18, 2006 7:45 = AM
To:=20 Rotary motors in aircraft
Subject: [FlyRotary] Re: Another = Turbo?

As for=20 strainers, I don't believe John's blown turbo had any damage on the=20 compressor side.  IIRC, he believes the turbine side somehow = through a=20 piece back into the engine.  I'm confident that he'll = correct me=20 if I got that wrong :-) 
 
Which turbo are we talking about?
The second turbo sent turbine fragments back into the = exhaust port=20 and took out an apex seal.
This cost me a housing, a set of seals and a drive to North = Carolina.
 
I'm pretty confident that there was no engine damage from = this=20 current failure where a turbine blade broke off.
 
Yes, I do have an intercooler.
John (off to install the big one)
 
 
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