X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 989584 for flyrotary@lancaironline.net; Fri, 17 Feb 2006 19:12:15 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.72; envelope-from=sladerj@bellsouth.net Received: from ibm70aec.bellsouth.net ([65.2.92.29]) by imf24aec.mail.bellsouth.net with ESMTP id <20060218001130.SBMP3579.imf24aec.mail.bellsouth.net@ibm70aec.bellsouth.net> for ; Fri, 17 Feb 2006 19:11:31 -0500 Received: from JSLADE ([65.2.92.29]) by ibm70aec.bellsouth.net with ESMTP id <20060218001130.GEN2056.ibm70aec.bellsouth.net@JSLADE> for ; Fri, 17 Feb 2006 19:11:30 -0500 From: "John Slade" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: Radio noise saga Date: Fri, 17 Feb 2006 19:11:22 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_01B9_01C633F5.F0DCBCC0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_01B9_01C633F5.F0DCBCC0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit > I hear The Destroyer of turbos claimed number 3. Actually, that was #4 For those interested, here's the "turbo report" Turbo #1: Stock T03. Used. Not rebuilt. Overspeed at 46MAP, 11,000'. Turbine wheel departed shaft and stuck in exhaust. Lesson learned. Stock turbo can't take boost at altitude. Turbo #2: Stock T03. Used. Not rebuilt. Similar failure but at lower altitude and boost. A piece of turbo went back into the engine and took out an apex seal. Engine rebuilt. I forget the details, but two's a trend, and this was enough to prove that the stock turbo can't cut it as a permanent solution (but then, they are only $300 used from Rusty) Turbo #3: T03 Hybrid rebuilt and modified for hi-flow Bearings failed and dumped oil into intake during runup. Takeoff aborted - insufficient boost and engine running rough. Turbo #4: Stock T03 Used. Not rebuilt. Installed while waiting for parts for T04 upgrade. On loan from Bob Tiley for "destructive testing". Mission accomplished. :) I babied the thing. Boost kept below 34 @ 5000'. Lost turbine blade during runup (this afternoon). Misbalanced turbine caused oil release into exhaust and intake. Lots of smoke. Runup aborted. Turbo #5: Turbonetics T04-P50 - new Sitting on the bench awaiting install. All parts now in hand. Hope to have it installed next week. The bottom line here is that I tried to save money and installed used ebay units that weren't rebuilt. $3500 for a new T04 just wasn't available earlier. The prices have come down and a full T04 install with Tial wastegate and XS Power manifold is now around $1500. Three turbos @ 300 each. Engine rebuild = $600 (not including cost of indestructible seals). Hybrid mod = $500. T04 = $1500. Total cost - $3500. Hey! I'm even! The failure modes are fairly benign. The airplane can fly straight & level with a dead turbo. I know this is the experimental category, but enough is enough! John ------=_NextPart_000_01B9_01C633F5.F0DCBCC0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

> I hear The Destroyer of turbos claimed number 3.
Actually, = that was=20 #4  3D""=20

For those interested, here's the "turbo=20 report"

Turbo #1: Stock T03. Used. Not = rebuilt.
Overspeed at=20 46MAP, 11,000'. Turbine wheel departed shaft and stuck in = exhaust.
Lesson=20 learned. Stock turbo can't take boost at altitude.

Turbo #2: = Stock T03.=20 Used. Not rebuilt.
Similar failure but at lower altitude and boost. A = piece=20 of turbo went back into the engine and took out an apex seal. Engine = rebuilt. I=20 forget the details, but two's a trend, and this was enough to prove that = the=20 stock turbo can't cut it as a permanent solution (but then, they are = only $300=20 used from Rusty)

Turbo #3: T03 Hybrid rebuilt and modified for=20 hi-flow
Bearings failed and dumped oil into intake during runup. = Takeoff=20 aborted - insufficient boost and engine running rough.

Turbo #4: = Stock=20 T03 Used. Not rebuilt.
Installed while waiting for parts for T04 = upgrade. On=20 loan from Bob Tiley for "destructive testing". Mission accomplished. :) = I babied=20 the thing. Boost kept below 34 @ 5000'. Lost turbine blade during runup = (this=20 afternoon). Misbalanced turbine caused oil release into exhaust and = intake. Lots=20 of smoke. Runup aborted.

Turbo #5: Turbonetics T04-P50 - = new
Sitting=20 on the bench awaiting install. All parts now in hand. Hope to have it = installed=20 next week.

The bottom line here is that I tried to save money and = installed used ebay units that weren't rebuilt. $3500 for a new T04 = just=20 wasn't available earlier. The prices have come down and a full T04 = install with=20 Tial wastegate and XS Power manifold is now around $1500. Three turbos @ = 300=20 each. Engine rebuild =3D $600 (not including cost of indestructible = seals). Hybrid=20 mod =3D $500. T04 =3D $1500. Total cost - $3500. Hey! I'm even! 3D""=20

The failure modes are fairly benign. = The airplane=20 can fly straight & level with a dead turbo.

I know this is = the=20 experimental category, but enough is enough!
John

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