X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 02 Jan 2012 11:16:18 -0500 Message-ID: X-Original-Return-Path: Received: from carbinge.com ([69.5.27.218] verified) by logan.com (CommuniGate Pro SMTP 5.4.3) with SMTP id 5331828 for lml@lancaironline.net; Fri, 30 Dec 2011 13:53:28 -0500 Received-SPF: none receiver=logan.com; client-ip=69.5.27.218; envelope-from=jbarrett@carbinge.com Received: (qmail 3427 invoked from network); 30 Dec 2011 18:52:53 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; h=X-Originating-IP:Reply-To:From:To:References:In-Reply-To:Subject:Date:Message-ID:MIME-Version:Content-Type:X-Mailer:Thread-Index:Content-Language; s=default; d=carbinge.com; b=Cj8/LC12Va5TYR6nI+99fMhUxeh1hcR5/r8iSsq/phIj0LRwwWc9SYVP8/hpko7twoj3YnSemlQtjbjDzYUE1u6FiLvIqmLLNWEBm7J7k/QfnaiPvE1zR9HYOcvSQ4SvSq0JkvVu7f5/ohoXevqWmR/XZFLGwm+hJmJpm4fxq4A=; X-Originating-IP: [24.143.115.170] Reply-To: From: "John Barrett" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Re: Lightspeed Ignition X-Original-Date: Fri, 30 Dec 2011 10:52:53 -0800 X-Original-Message-ID: <017401ccc724$3d18b040$b74a10c0$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0175_01CCC6E1.2EF57040" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AczHFYz0SiusCOrgQwKDC0C4OTdZOQADm8VA Content-Language: en-us This is a multi-part message in MIME format. ------=_NextPart_000_0175_01CCC6E1.2EF57040 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable No flywheel on a TSIO-550. Alternative is to use tape marks at the base = of the spinner and use extension of the case split line as the fixed = point. Worked fairly well for us. =20 =20 John Barrett =20 From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = randy snarr Sent: Friday, December 30, 2011 9:07 AM To: lml@lancaironline.net Subject: [LML] Re: Lightspeed Ignition =20 Dom, When running a mag and the Light Speed EI they recommend the timing be = set on the mag with a timing light as they do for their unit as well. If = the shop set the mag timing with a buzz box that could have changed = it. I run the same set up. I get almost no drop in rpm when the mag is = shut off. This is due to the fact that the mag mostly sparks in the = shadow of the longer hotter sparking electronic ignition. It is my = understanding that the Electronic Ignition is doing 90% of the firing of = the gases in the cyl. =20 I would retime both the EI and the mag and see what you get. I have the = hall effect module and you use a simple automotive timing light with = marks on the fly wheel. It is pretty easy to do.. =20 FWIW.. Randy Snarr N694RS 235/320 =20 =20 "Flight by machines heavier than air is unpractical and insignificant, = if not utterly impossible" -Simon Newcomb, 1902 _____ =20 From: Gary Casey To: lml@lancaironline.net=20 Sent: Thursday, December 29, 2011 2:10 PM Subject: [LML] Re: Lightspeed Ignition Dom, I'm sure the most common cause for this is a change in ignition timing. = I assume the mechanic left the Lightspeed system alone, but did the = normal routine of resetting the timing of the mag. If the two timings = are exactly the same you will likely get the same drop on each, or maybe = a little less drop on the Lightspeed. I've observed that most annuals = include resetting the timing, but rarely will the mechanic state what it = was before the change, which would be very useful information. I'll bet = he advanced the timing of the mag by maybe 2 degrees. Just a guess :-) Gary =20 Um =E2=80=93 er - (headscratch) =E2=80=93 fellow LMLer=E2=80=99s = =E2=80=93 since the annual performed by maintenance outfit (not = necessarily significant) I notice I get a drop around 80 RPM on the = Lightspeed ignition during run-up, whereas before it was barely = noticeable. =20 Been wondering why. Changed my iridium plugs two days ago just as a = starting point but no difference. =20 So thought I would ask the experts herein. =20 Thanks =20 Dom Crain =20 ------=_NextPart_000_0175_01CCC6E1.2EF57040 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

No flywheel on a TSIO-550.=C2=A0 Alternative is to use tape marks at = the base of the spinner and use extension of the case split line as the = fixed point.=C2=A0 Worked fairly well for us.=C2=A0 =

 

John Barrett

 

From:= = Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = randy snarr
Sent: Friday, December 30, 2011 9:07 = AM
To: lml@lancaironline.net
Subject: [LML] Re: = Lightspeed Ignition

 

Dom,

When running a mag and the Light Speed EI they = recommend the timing be set on the mag with a timing light as they do = for their unit as well. If the shop set the   mag timing with a = buzz box that could have changed it. I run the same set up. I get almost = no drop in rpm when the mag is shut off. This is due to the fact that = the mag mostly sparks in the shadow of the longer hotter sparking = electronic ignition. It is my understanding that the Electronic Ignition = is doing 90% of the firing of the gases in the = cyl.

 

I would retime both the EI and the mag and see = what you get. I have the hall effect module and you use a simple = automotive timing light with marks on the fly = wheel.

It is pretty easy = to do..

 

FWIW..
Randy = Snarr

N694RS

235/320

 

 

"Flight by machines heavier than air is = unpractical and insignificant, if not utterly = impossible"
-Simon = Newcomb, 1902

<= hr size=3D1 width=3D"100%" align=3Dcenter>

F= rom: = Gary Casey <casey.gary@yahoo.com>
To: = lml@lancaironline.net
Sent: Thursday, December 29, 2011 2:10 = PM
Subject: [LML] Re: Lightspeed Ignition

Dom,

I'm sure = the most common cause for this is a change in ignition timing.  I = assume the mechanic left the Lightspeed system alone, but did the normal = routine of resetting the timing of the mag.  If the two timings are = exactly the same you will likely get the same drop on each, or maybe a = little less drop on the Lightspeed.  I've observed that most = annuals include resetting the timing, but rarely will the mechanic state = what it was before the change, which would be very useful information. =  I'll bet he advanced the timing of the mag by maybe 2 degrees. =  Just a guess :-)

Gary

 

<= p class=3DMsoNormal style=3D'background:white'>Um =E2=80=93 er - (headscratch) =E2=80=93 fellow LMLer=E2=80=99s = =E2=80=93 since the annual performed by maintenance outfit (not = necessarily significant) I notice I get a drop around 80 RPM on the = Lightspeed ignition during run-up, whereas before it was barely = noticeable.

 

Been wondering why. Changed my iridium plugs two days ago just as a = starting point but no difference.

 

So thought I would ask the experts = herein.

 

Thanks

 

Dom Crain

 

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