X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost03.isp.att.net ([207.115.11.53] verified) by logan.com (CommuniGate Pro SMTP 5.4c2o) with ESMTP id 4891526 for flyrotary@lancaironline.net; Fri, 04 Mar 2011 18:51:51 -0500 Received-SPF: none receiver=logan.com; client-ip=207.115.11.53; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-85-145-79.mco.bellsouth.net[98.85.145.79]) by isp.att.net (frfwmhc03) with SMTP id <20110304235113H0300ot8uue>; Fri, 4 Mar 2011 23:51:14 +0000 X-Originating-IP: [98.85.145.79] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Knock sensor and indicator Date: Fri, 4 Mar 2011 18:51:14 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01CBDA9D.237D5C90" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Acvaepm3aGm5kHHSRIy4AMzIoEx9NQATDGcg X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01CBDA9D.237D5C90 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Chris, these two articles will not do much to help you in the airplane because of the outside noise, but they will help you understand how to make one if you want it. http://autospeed.com/cms/A_0348/article.html Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris Barber Sent: Friday, March 04, 2011 9:43 AM To: Rotary motors in aircraft Subject: [FlyRotary] Knock sensor and indicator Since I have had an issue with detonation, I am contemplating adding a knock sensor. What do y'all know about this addition. I do not believe Tracy's EM has a provision for a reading, so, what might be a good route to take. The brief research I have done shows different frequencies, types etc. What would be correct for a rotary, both as to a sensor and something to notify me in the cabin? Thanks. I am about to replace ALL my apex seals and soft parts and hopefully finally lick this issue....hopefully....did I mention hopefully...determinably...persistent? (heck, I wasn't planning anything else this weekend ) Chris ------=_NextPart_000_0000_01CBDA9D.237D5C90 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Chris, these two articles = will not do much to help you in the airplane because of the outside noise, but they = will help you understand how to make one if you want = it.

http://autospeed.co= m/cms/A_0348/article.html

Bill B

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris = Barber
Sent: Friday, March 04, = 2011 9:43 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] = Knock sensor and indicator

Since I have had an issue with = detonation, I am contemplating adding a knock sensor. What do y'all know = about this addition. I do not believe Tracy's EM has a provision for a reading, so, what might be a good route to = take. The brief research I have done shows different frequencies, types etc. What would be correct for a rotary, both as to a sensor = and something to notify me in the cabin? Thanks. I am about = to replace ALL my apex seals and soft parts and hopefully finally lick = this issue....hopefully....did I mention = hopefully...determinably...persistent? (heck, I wasn't planning anything else this weekend = <g>)

Chris

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