X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 01 Jun 2007 15:11:50 -0400 Message-ID: X-Original-Return-Path: Received: from sfa.gami.com ([68.89.254.162] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2078921 for lml@lancaironline.net; Fri, 01 Jun 2007 14:05:47 -0400 Received-SPF: none receiver=logan.com; client-ip=68.89.254.162; envelope-from=gwbraly@gami.com Received: from localhost (localhost.localdomain [127.0.0.1]) by sfa.gami.com (Postfix) with ESMTP id 2C65729C084 for ; Fri, 1 Jun 2007 13:05:08 -0500 (CDT) Received: from sdf1.mail.taturbo.com (unknown [10.10.10.173]) by sfa.gami.com (Postfix) with ESMTP id 32EE529C080 for ; Fri, 1 Jun 2007 13:05:07 -0500 (CDT) content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C7A477.62CF3C98" X-MimeOLE: Produced By Microsoft Exchange V6.0.6603.0 Subject: Re: TSIO 550 LOP X-Original-Date: Fri, 1 Jun 2007 13:05:06 -0500 X-Original-Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: TSIO 550 LOP Thread-Index: AcejmTOuG/eQrIzeRiifPGG0kmd4nQArfeXQ From: "George Braly" X-Original-To: "Lancair Mailing List" X-Virus-Scanned: by amavisd-new-2.3.2 (20050629) (Debian) at gami.com This is a multi-part message in MIME format. ------_=_NextPart_001_01C7A477.62CF3C98 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Lynn, =20 Do you know how far lean (or rich) of peak you wee at 18.9 gph? =20 Normally at 29.5" x ~2500 RPM and 18.9 gph - - - you would be pretty close to peak TIT. =20 =20 But your TIT values don't look like they are at absolute values that would normally correspond to peak in a 7.5"1 TSIO-550 engine. =20 Thus - - - just looking at the "over all picture" of your data - - - there is something there that doesn't "fit".=20 =20 If I was going to start troubleshooting, I would first want to see a simple GAMI lean test at those power settings. =20 From that, I could probably make a good educated guess as to where the instrumentation discrepancy is. =20 Regards, George =20 _____ =20 From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Farnsworth Sent: Thursday, May 31, 2007 10:34 AM To: lml@lancaironline.net Subject: [LML] Re: TSIO 550 LOP =20 Colyn, =20 Here are the figures from one of my flights a few months ago: =20 17,570' Altitude (20,090 PA) IAS - 195 KTS; TAS - 265 KTS Induction air temp - 84 F Manifold pressure - 29.5 RPF - 2490 Fuel flow - 18.9 GPH TIT # 1 - 1620 F TIT # 2 - 1576 F =20 EGT CHT =20 1. 1456 1. 334 2. 1415 1. 335 3. 1451 3. 310 4. 1421 4. 301 5. 1425 5. 316 6. 1424 6. 315 =20 Lynn Farnsworth Super Legacy #235 TSIO-550 Powered Race #44 =20 _____ =20 From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Colyn Case on earthlink Sent: Wednesday, May 30, 2007 11:25 PM To: lml@lancaironline.net Subject: [LML] Re: TSIO 550 LOP =20 So I'm not able to run my engine much beyond 15gph LOP at high altitude without exceeding 1650 on my right turbo. I'm trying to figure out if I have a gauge problem. =20 What spread do people see between egt and tit?=20 =20 What spread between the left TIT and the right TIT? =20 Mine is about 100 dF. Since there are 6 egt gauges I'm inclined to believe that not all 6 are broken the same way. ....whereas the tit may be suspect. Also, my right TIT is 50 dF hotter than the left. =20 Colyn ------_=_NextPart_001_01C7A477.62CF3C98 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Lynn,

Do you know how far lean (or rich) = of peak you wee at 18.9 gph?

Normally at 29.5” x ~2500 RPM and 18.9 gph - - - you would be pretty close to peak = TIT.

But your TIT values don’t = look like they are at absolute values that would normally correspond to peak in a = 7.5”1 TSIO-550 engine.

Thus - - - just looking at the = “over all picture” of your data - - - there is = something there that doesn’t “fit”. =

If I was going to start troubleshooting, I would first want to see a simple = GAMI lean test at those power settings.

From that, I could probably = make a good educated guess as to where the instrumentation discrepancy = is.

Regards, = George

From: = Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Farnsworth
Sent: Thursday, May 31, = 2007 10:34 AM
To: = lml@lancaironline.net
Subject: [LML] Re: TSIO = 550 LOP

Colyn,

Here are the figures from one of my flights a few months ago:

17,570’ Altitude (20,090 = PA)

IAS – 195 KTS; TAS – = 265 KTS

Induction air temp – 84 = F

Manifold pressure – = 29.5

RPF – = 2490

Fuel flow – 18.9 = GPH

TIT # 1 – 1620 = F

TIT # 2 – 1576 = F

EGT &nb= sp; CHT

1. 1456 1. = 334

2. 1415 1. = 335

3. = 1451 3. 310

4. 1421 4. = 301

5. 1425 5. = 316

6. 1424 6. = 315

Lynn = Farnsworth

Super Legacy = #235

TSIO-550 = Powered

Race = #44

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Colyn Case on = earthlink
Sent: Wednesday, May 30, = 2007 11:25 PM
To: = lml@lancaironline.net
Subject: [LML] Re: TSIO = 550 LOP

So I'm not able to run my engine = much beyond 15gph LOP at high altitude without exceeding 1650 on my right = turbo.

I'm trying to figure out if I have = a gauge problem.

=

What spread do = people see between egt and tit?

=

What spread = between the left TIT and the right TIT?

=

Mine is about 100 dF. Since = there are 6 egt gauges I'm inclined to believe that not all 6 are broken the = same way.

....whereas the tit may be = suspect.

Also, my right TIT is 50 dF hotter = than the left.

=

Colyn

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