X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [129.116.87.143] (HELO MAIL01.austin.utexas.edu) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTP id 931495 for flyrotary@lancaironline.net; Wed, 18 Jan 2006 11:52:33 -0500 Received-SPF: none receiver=logan.com; client-ip=129.116.87.143; envelope-from=mark.steitle@austin.utexas.edu X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C61C4F.788BDB58" Subject: RE: [FlyRotary] Re: LS1 Coil Failures Date: Wed, 18 Jan 2006 10:51:47 -0600 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69E036D0887@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: LS1 Coil Failures Thread-Index: AcYcTvfI8UWYvfSoTKKYWBtAd6M8OAAACqhA From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C61C4F.788BDB58 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Sorry, that's what I get for doing "head math". Anyway, my point is still valid. It fires 8 times more often in the rotary than in the truck/auto. Could the duty-cycle be the culprit? It would be interesting to see the specs on these coils. =20 Mark S.=20 =20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Russell Duffy Sent: Wednesday, January 18, 2006 10:47 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: LS1 Coil Failures =20 Each rotor fires once/revolution of the eccentric shaft. Cruising along at 6000rpm, that's 600 sparks/second/coil. =20 =20 Hi Mark, =20 Is this the new math I always heard about :-) =20 =20 6000 rpm / 60 seconds =3D 100 sparks per second =20 Cheers, Rusty (everyone's a critic ) =20 =20 ------_=_NextPart_001_01C61C4F.788BDB58 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Sorry, that’s what I get for = doing “head math”. Anyway, my point is still valid. It fires 8 = times more often in the rotary than in the truck/auto. Could the duty-cycle be the = culprit? It would be interesting to see the specs on these = coils.

Mark S. =

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Russell Duffy
Sent: Wednesday, January = 18, 2006 10:47 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = LS1 Coil Failures

Each rotor fires once/revolution of the eccentric shaft. Cruising along at 6000rpm, that's 600 = sparks/second/coil.

Hi Mark,

Is this the new math I always heard about :-) =

6000 rpm / 60 seconds =3D 100 sparks per = second

Cheers,

Rusty (everyone's a critic = <g>)

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