X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 12 May 2005 11:24:37 -0400 Message-ID: X-Original-Return-Path: Received: from systems3.net ([68.14.236.16] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTPS id 941282 for lml@lancaironline.net; Thu, 12 May 2005 11:21:28 -0400 Received-SPF: none receiver=logan.com; client-ip=68.14.236.16; envelope-from=cberland@systems3.net Received: from systems0d3b724 ([192.168.1.81]) by systems3.net (8.13.4/8.13.4/Debian-1) with SMTP id j4CFKgDW005261 for ; Thu, 12 May 2005 08:20:43 -0700 X-Original-Message-ID: <005e01c55706$28ea9650$5101a8c0@systems0d3b724> From: "Craig Berland" X-Original-To: "Lancair Mail List" Subject: [LML] Re: Plasma III on Hi Compression Engines X-Original-Date: Thu, 12 May 2005 08:20:36 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_005B_01C556CB.79790010" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1437 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 This is a multi-part message in MIME format. ------=_NextPart_000_005B_01C556CB.79790010 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable "I put those two pieces of information together and reach the conclusion = that if there are ways to operate the engine at high power but minimize = the peak torsionals, then that method ought to be used. I'm not sure I = answered your question. If not, let me try again. Regards, George" Yes you did answer my question...thanks. One more. How much of a tight = rope are we walking with the TSIO550 trying to balance peak pressure and = TIT? Well, two questions. I have discussed with some the advisability = of raising the compression ratio on the TSIO550 and I advised against = it. The quest for efficiency is outweighed by the quest for durability. = What do you think? A similar question. Would you advise retarding the = timing if Scot's engine was stock CR? Retard 2 to 3 deg's more at 9 to = 1 and 5 to 7 deg's more at 10 to 1??? If this is so, then stock CR is = the way to go. Finally let me say I believe there are lots of variables = that affect engine durability like oil type and viscosity, engine = component balance and prop balance to name a few. So this is not a = discussion on whether or not Scott or someone else should run a given = CR. I'm trying to isolate and understand a given engine calibration = feature and I'm most interested in the TSIO550. Craig Berland ------=_NextPart_000_005B_01C556CB.79790010 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

"I put those = two pieces=20 of information together and reach the conclusion that if there are ways = to=20 operate the engine at high power but minimize the peak torsionals,  = then=20 that method ought to be used. I=92m not=20 sure I answered your question.  If not, let me try again.=20 Regards, =20 George"

Yes you did = answer my=20 question...thanks.  One more.  How much of a tight rope are we = walking=20 with the TSIO550 trying to balance peak pressure and TIT?  Well, = two=20 questions.  I have discussed with some the advisability of raising = the=20 compression ratio on the TSIO550 and I advised against it. The quest for = efficiency is outweighed by the quest for durability. What do you = think?  A=20 similar question.  Would you advise retarding the timing if Scot's = engine=20 was stock CR?  Retard 2 to 3 deg's more at 9 to 1 and 5 to 7 = deg's=20 more at 10 to 1???  If this is so, then stock CR is the way to = go.=20 Finally let me say I believe there are lots of variables that affect = engine=20 durability like oil type and viscosity, engine component balance and = prop=20 balance to name a few. So this is not a discussion on whether or not = Scott or=20 someone else should run a given CR. I'm trying to isolate and understand = a given=20 engine calibration feature and I'm most interested in the=20 TSIO550.

Craig=20 Berland

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