X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 18 May 2006 18:03:16 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m20.mx.aol.com ([64.12.137.1] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1118701 for lml@lancaironline.net; Thu, 18 May 2006 12:16:27 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.1; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m20.mx.aol.com (mail_out_v38_r7.5.) id q.45b.b66faf (39332) for ; Thu, 18 May 2006 12:15:40 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: <45b.b66faf.319df7ac@aol.com> X-Original-Date: Thu, 18 May 2006 12:15:40 EDT Subject: Re: [LML] Re: Lean test results - 360, LSE display X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1147968940" X-Mailer: 9.0 Security Edition for Windows sub 5300 X-Spam-Flag: NO -------------------------------1147968940 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 5/18/2006 9:41:29 A.M. Central Standard Time, marv@lancaironline.net writes: Lightspeed has a readout showing the timing, RMP, an MP. Wonder why Lasar hides it? Robert, Be cautious of Light Speed Engineering's (LSE) display data. In my Plasma III system, the LSE MAP does not agree with the VM EPI 800 display although one is tapped off cyl #1 and the other off cyl #4 respectively. The LSE MAP display is lower by up to .7" at some power settings. The LSE RPM indication is low from 40-70 RPM. This result was tested against both the VM system and the tach used in a dynamic prop balancer. The VM and balancer tach difference was never more than 10 RPM (VM display accuracy). Note that the VM RPM data is provided by the LSE Plasma controller and is picked up by crankshaft sensor mentioned below. The timing is assumed to be accurate since the two LSE boxes agree within .5 - .7 degree while using the dual crankshaft sensor system. LSE converts perfectly good digital data into analog voltage then displayed on a Simpson LCD voltage meter. I was told by a former LASAR engineer that their timing was proprietary so no one else could copy the curve. Remember that Electroair published its algorithm in the CAFE electronic ignition series. Also note that LSE does not publish the timing curves but one could develop such information by utilizing the LSE display and different flight conditions. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) Abnegate Exigencies! -------------------------------1147968940 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 5/18/2006 9:41:29 A.M. Central Standard Time,=20 marv@lancaironline.net writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000=20 size=3D2>Lightspeed has a readout showing the timing, RMP, an MP. Wo= nder=20 why Lasar
hides it?

Robert,

Be cautious of Light Speed Engineering's (LSE) display data. = In=20 my Plasma III system, the LSE MAP does not agree with the VM EPI 800=20 display although one is tapped off cyl #1 and the other off cyl #4=20 respectively.

The LSE MAP display is lower by up to .7" at some power settings. = The=20 LSE RPM indication is low from 40-70 RPM. This result was tested=20 against both the VM system and the tach used in a dynamic prop balancer.&nbs= p;=20 The VM and balancer tach difference was never more than 10 RPM (VM display=20 accuracy). Note that the VM RPM data is provided by the LSE Plas= ma=20 controller and is picked up by crankshaft sensor mentioned below. = =20

The timing is assumed to be accurate since the two LSE boxes agree with= in=20 .5 - .7 degree while using the dual crankshaft sensor system.

LSE converts perfectly good digital data into analog voltage then displ= ayed=20 on a Simpson LCD voltage meter.

I was told by a former LASAR engineer that their timing was=20 proprietary so no one else could copy the curve. Remember that Electro= air=20 published its algorithm in the CAFE electronic ignition series. Also no= te=20 that LSE does not publish the timing curves but one could develop such=20 information by utilizing the LSE display and different flight conditions.=20

Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL=20 (KARR)

Abnegate Exigencies!

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