X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost04.isp.att.net ([204.127.217.104] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with ESMTP id 2978661 for flyrotary@lancaironline.net; Sat, 21 Jun 2008 19:48:02 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.217.104; envelope-from=keltro@att.net Received: from fwebmail01.isp.att.net ([204.127.218.101]) by isp.att.net (frfwmhc04) with SMTP id <20080621234722H040096au0e>; Sat, 21 Jun 2008 23:47:22 +0000 X-Originating-IP: [204.127.218.101] Received: from [4.244.72.138] by fwebmail01.isp.att.net; Sat, 21 Jun 2008 23:47:22 +0000 From: "Kelly Troyer" To: "Rotary motors in aircraft" Subject: Another Turbo Bites the dust Date: Sat, 21 Jun 2008 23:47:22 +0000 Message-Id: <062120082347.6377.485D9309000284FD000018E922218865869B0A02D29B9B0EBF019D9B040A05@att.net> In-Reply-To: X-Mailer: AT&T Message Center Version 1 (Jun 10 2008) X-Authenticated-Sender: a2VsdHJvQGF0dC5uZXQ= MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_6377_1214092042_0" --NextPart_Webmail_9m3u9jl4l_6377_1214092042_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Dave and All, Have not heard from John Slade lately about his new turbo but if I were a guessing man I would guess that it is going to take a full blooded TO4 (like his) or equivalent to stand up to the Rotary's hot breath for the TBO that we would like........ Jump in here John and bring us up to date on your turbo and run the spec's on yours cross here again......... Kelly Troyer "Dyke Delta"_13B ROTARY Engine "RWS"_RD1C/EC2/EM2 "Mistral"_Backplate/Oil Manifold -------------- Original message from "David Leonard" : -------------- yup on both counts. Dave On Fri, Jun 20, 2008 at 9:14 PM, Mike Wills wrote: Dave, Stating the obvious, that sucks. I assume you run synthetic oil? Is the center housing water cooled? Mike Wills RV-4 N144MW ----- Original Message ----- From: David Leonard To: Rotary motors in aircraft Sent: Friday, June 20, 2008 8:47 PM Subject: [FlyRotary] Another Turbo Bites the dust Today I flew from San Diego to Brownville Texas to attend a formation flying clinic. After 6 hours of WOT flight I was descending through 5000' (down from 15.5k) an just a few miles from the airport when I had a sudden and sickening drop in manifold pressure. The engine was still running fine, and I had plenty of altitude to make the runway, so I continued on debating weather or not to flip the turbo oil shutoff switch. I had grown to respect this turbo so much that I finally decided that I had just blown out a fitting somewhere in the intake system downstream of the turbo. I even continued on to a low pass for show rather than just landing. When I eventually had time to take off the cowl I was dissapointed to find that all the fitting were in place and that the compressor wheel turns only with significant resistance. So the turbo is dead, and I am out of the formation clinic and will have to decide tomorrow about flying home with a dead turbo. Will maybe be able to take a look in the hot side and see what I see. This turbo was the TO4 hybrid with a fixed wide open waste gate. It had 130 hrs of mostly hard duty. Sigh. -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net --NextPart_Webmail_9m3u9jl4l_6377_1214092042_0 Content-Type: multipart/related; boundary="NextPart_Webmail_9m3u9jl4l_6377_1214092042_1" --NextPart_Webmail_9m3u9jl4l_6377_1214092042_1 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
  Dave and All,
 
        Have not heard from John Sl= ade lately about his new turbo
but if I were a guessing man I would guess that it is going to ta= ke
a full blooded TO4 (like his) or equivalent to stand up to the
Rotary's hot breath for the TBO that we would like........ J= ump in
here John and bring us up to date on your turbo and run the spec'= s
on yours cross here again.........

Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2= /EM2
"Mistral"_Backplate/Oil Manifold



 
-------------- Original message from "David Leonard" <wdl= eonard@gmail.com>: --------------

yup on both counts.

Da= ve

On Fri, Jun 20, 2008 at 9:14 PM, Mike Wills <rv-4mike@cox.net> wrote:
Dave,
 
 Stating the obvious, that sucks. I a= ssume you run synthetic oil? Is the center housing water cooled?
 
Mike Wills
RV-4 N144MW
----- Original Message -----
Sent: Friday, June 20, 2008 8:47 PM
Subject: [FlyRotary] Another Turbo Bites the dust

Today I flew from San Diego to Brownville Texas to attend a = formation flying clinic.  After 6 hours of WOT flight I was descending= through 5000' (down from 15.5k) an just a few miles from the airport when = I had a sudden and sickening drop in manifold pressure.   The eng= ine was still running fine, and I had plenty of altitude to make the runway= , so I continued on debating weather or not to flip the turbo oil shutoff s= witch.  I had grown to respect this turbo so much that I finally decid= ed that I had just blown out a fitting somewhere in the intake system downs= tream of the turbo.  I even continued on to a low pass for show rather= than just landing.  When I eventually had time to take off the cowl I= was dissapointed to find that all the fitting were in place and that the c= ompressor wheel turns only with significant resistance.

So the turbo= is dead, and I am out of the formation clinic and will have to decide tomo= rrow about flying home with a dead turbo.  Will maybe be able to take = a look in the hot side and see what I see.

This turbo was the TO4 hy= brid with a fixed wide open waste gate.  It had 130 hrs of mostly hard= duty.  Sigh.

--
David Leonard

Turbo Rot= ary RV-6 N4VY
= http://N4VY.RotaryRoster.net
http://RotaryRoster.net



--
David Leonard

Turbo = Rotary RV-6 N4VY
http://N4VY.R= otaryRoster.net
http://RotaryRo= ster.net
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