X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from hub026-NJ-3.exch026.serverdata.net ([206.225.166.166] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 6785818 for flyrotary@lancaironline.net; Tue, 18 Mar 2014 15:26:19 -0400 Received-SPF: none receiver=logan.com; client-ip=206.225.166.166; envelope-from=jwhaley@datacast.com Received: from MBX026-E1-NJ-2.exch026.domain.local ([10.240.14.52]) by HUB026-NJ-3.exch026.domain.local ([10.240.14.36]) with mapi id 14.03.0174.001; Tue, 18 Mar 2014 12:25:42 -0700 From: Jeff Whaley To: Rotary motors in aircraft Subject: Re: Off Topic Lycoming Question Thread-Topic: Re: Off Topic Lycoming Question Thread-Index: Ac9C39mleuWpkAriQSeIhP7Gi14SQg== Date: Tue, 18 Mar 2014 19:25:41 +0000 Message-ID: <234B758DE9A64449BEB6BB5D1345CA7A3615C015@mbx026-e1-nj-2.exch026.domain.local> Accept-Language: en-CA, en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-originating-ip: [209.87.232.162] Content-Type: multipart/related; boundary="_005_234B758DE9A64449BEB6BB5D1345CA7A3615C015mbx026e1nj2exch_"; type="multipart/alternative" MIME-Version: 1.0 --_005_234B758DE9A64449BEB6BB5D1345CA7A3615C015mbx026e1nj2exch_ Content-Type: multipart/alternative; boundary="_000_234B758DE9A64449BEB6BB5D1345CA7A3615C015mbx026e1nj2exch_" --_000_234B758DE9A64449BEB6BB5D1345CA7A3615C015mbx026e1nj2exch_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Doug, I have a Lycoming 0-290-D2 in a 1954 Tri-Pacer. Below is a link to S= ervice Instruction, SI 1132B ... I think you'll find the spark advance on t= his engine is much less than you are used to; my engine is timed to 18 degr= ees BTDC as per this document. Jeff http://www.lycoming.com/Portals/0/techpublications/serviceinstructions/SI%2= 01132B%20%2806-18-2010%29/Magneto%20Drop-Off.pdf From: dlomheim@aol.com Subject: Off Topic Lycoming Question... Date: Tue, 18 Mar 2014 13:59:15 +0000 To: "Rotary Aircraft List" [Message Header] [Undecoded Message] I have finally finished the restoration of an RV-3A that sat for 12+yrs in = a hanger here in OK. After to flights now I have two engine issues I'd lov= e to have some feedback on from the smart engine guys on the list! I'm run= ning an O-290G that has been modified to a "D" config. Minus the crankshaft= . The airboat guys run this engine w/the timing at 28 deg. (Vs 26 deg) BTD= C and it has the original Marvel 3A carb that it flew w/for it's first 150 = hrs. My two big issues are the EGT is constantly redlined at RPMs above 23= 00. I attempted leaning it on the last flight, and it didn't drop the temp= s at all. Additionally, the CHT has never hit more than 200 degrees and it= has a sparkplug sender which I have read should read about 40 higher than = actual if using a bayonet style in the cylinder barrel. Anyway, I need to = verify the temp calibration of the gauges, but I wonder if there is somethi= ng on the spark / timing side I also should consider here as I trouble-shoo= t it further... Thx for any ideas! Doug Lomheim RV-3A flying! RV-9A w/13B ready for some attention this Summer! Sent on the Sprint(r) Now Network from my BlackBerry(r) This message, and the documents attached hereto, is intended only for the a= ddressee and may contain privileged or confidential information. Any unauth= orized disclosure is strictly prohibited. If you have received this message= in error, please notify us immediately so that we may correct our internal= records. Please then delete the original message. Thank you. --_000_234B758DE9A64449BEB6BB5D1345CA7A3615C015mbx026e1nj2exch_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Doug, I have a Lycoming 0-290-D2 in a 1954 Tri-Pacer= . Below is a link to Service Instruction, SI 1132B … I think yo= u’ll find the spark advance on this engine is much less than you are = used to; my engine is timed to 18 degrees BTDC as per this document.

Jeff

http://www.lycoming.com/Portals/0/techpublications/s= erviceinstructions/SI%201132B%20%2806-18-2010%29/Magneto%20Drop-Off.pdf

From:	dlomheim@aol.com
Subject:	Off Topic Lycoming Question...
Date:	Tue, 18 Mar 2014 13:59:15 +0000=
To:	"Rotary Aircraft List" <fly= rotary@lancaironline.net>

I have finally finished the restoration of an RV-3A that s= at for 12+yrs in a hanger here in OK. After to flights now I have= two engine issues I'd love to have some feedback on from the smart engine guys on the list! I'm running an O-290G that has be= en modified to a "D" config. Minus the crankshaft. The airb= oat guys run this engine w/the timing at 28 deg. (Vs 26 deg) BTDC and it ha= s the original Marvel 3A carb that it flew w/for it's first 150 hrs. My two big issues are the EGT is constantly redlined = at RPMs above 2300. I attempted leaning it on the last flight, and it= didn't drop the temps at all. Additionally, the CHT has never hit mo= re than 200 degrees and it has a sparkplug sender which I have read should read about 40 higher than actual if using a bayon= et style in the cylinder barrel. Anyway, I need to verify the temp ca= libration of the gauges, but I wonder if there is something on the spark / = timing side I also should consider here as I trouble-shoot it further...
Thx for any ideas!

Doug Lomheim
RV-3A flying!
RV-9A w/13B ready for some attention this Summer!
Sent on the Sprint® Now Network from my BlackBerry®

This message, and the documents attached hereto, is intended only for the a= ddressee and may contain privileged or confidential information. Any unauth= orized disclosure is strictly prohibited. If you have received this message= in error, please notify us immediately so that we may correct our internal records. Please then delete the origin= al message. Thank you. --_000_234B758DE9A64449BEB6BB5D1345CA7A3615C015mbx026e1nj2exch_-- --_005_234B758DE9A64449BEB6BB5D1345CA7A3615C015mbx026e1nj2exch_ Content-Type: image/gif; name="image001.gif" Content-Description: image001.gif Content-Disposition: inline; filename="image001.gif"; size=849; creation-date="Tue, 18 Mar 2014 19:25:41 GMT"; modification-date="Tue, 18 Mar 2014 19:25:41 GMT" Content-ID: Content-Transfer-Encoding: base64 R0lGODdhCgANAPcAAAAAAIAAAACAAICAAAAAgIAAgACAgMDAwMDcwKbK8AAAAAAAKgAAVQAAfwAA qgAA1AAqAAAqKgAqVQAqfwAqqgAq1ABVAABVKgBVVQBVfwBVqgBV1AB/AAB/KgB/VQB/fwB/qgB/ 1ACqAACqKgCqVQCqfwCqqgCq1ADUAADUKgDUVQDUfwDUqgDU1CoAACoAKioAVSoAfyoAqioA1Coq ACoqKioqVSoqfyoqqioq1CpVACpVKipVVSpVfypVqipV1Cp/ACp/Kip/VSp/fyp/qip/1CqqACqq KiqqVSqqfyqqqiqq1CrUACrUKirUVSrUfyrUqirU1FUAAFUAKlUAVVUAf1UAqlUA1FUqAFUqKlUq VVUqf1UqqlUq1FVVAFVVKlVVVVVVf1VVqlVV1FV/AFV/KlV/VVV/f1V/qlV/1FWqAFWqKlWqVVWq f1WqqlWq1FXUAFXUKlXUVVXUf1XUqlXU1H8AAH8AKn8AVX8Af38Aqn8A1H8qAH8qKn8qVX8qf38q qn8q1H9VAH9VKn9VVX9Vf39Vqn9V1H9/AH9/Kn9/VX9/f39/qn9/1H+qAH+qKn+qVX+qf3+qqn+q 1H/UAH/UKn/UVX/Uf3/Uqn/U1KoAAKoAKqoAVaoAf6oAqqoA1KoqAKoqKqoqVaoqf6oqqqoq1KpV AKpVKqpVVapVf6pVqqpV1Kp/AKp/Kqp/Vap/f6p/qqp/1KqqAKqqKqqqVaqqf6qqqqqq1KrUAKrU KqrUVarUf6rUqqrU1NQAANQAKtQAVdQAf9QAqtQA1NQqANQqKtQqVdQqf9QqqtQq1NRVANRVKtRV VdRVf9RVqtRV1NR/ANR/KtR/VdR/f9R/qtR/1NSqANSqKtSqVdSqf9SqqtSq1NTUANTUKtTUVdTU f9TUqtTU1AAAAAwMDBkZGSYmJjMzMz8/P0xMTFlZWWZmZnJycn9/f4yMjJmZmaWlpbKysr+/v8zM zNjY2OXl5fLy8v/78KCgpICAgP8AAAD/AP//AAAA//8A/wD//////ywAAAAACgANAAAINgDxCRw4 EAC+fwgTIjT4DwCAAwIXHlSYkKHDhxEZUpTYEONEjRstOoR4ECRFkSQ5bux4saXDgAA7 --_005_234B758DE9A64449BEB6BB5D1345CA7A3615C015mbx026e1nj2exch_ Content-Type: image/gif; name="image002.gif" Content-Description: image002.gif Content-Disposition: inline; filename="image002.gif"; size=857; creation-date="Tue, 18 Mar 2014 19:25:41 GMT"; modification-date="Tue, 18 Mar 2014 19:25:41 GMT" Content-ID: Content-Transfer-Encoding: base64 R0lGODdhCgANAPcAAAAAAIAAAACAAICAAAAAgIAAgACAgMDAwMDcwKbK8AAAAAAAKgAAVQAAfwAA qgAA1AAqAAAqKgAqVQAqfwAqqgAq1ABVAABVKgBVVQBVfwBVqgBV1AB/AAB/KgB/VQB/fwB/qgB/ 1ACqAACqKgCqVQCqfwCqqgCq1ADUAADUKgDUVQDUfwDUqgDU1CoAACoAKioAVSoAfyoAqioA1Coq ACoqKioqVSoqfyoqqioq1CpVACpVKipVVSpVfypVqipV1Cp/ACp/Kip/VSp/fyp/qip/1CqqACqq KiqqVSqqfyqqqiqq1CrUACrUKirUVSrUfyrUqirU1FUAAFUAKlUAVVUAf1UAqlUA1FUqAFUqKlUq VVUqf1UqqlUq1FVVAFVVKlVVVVVVf1VVqlVV1FV/AFV/KlV/VVV/f1V/qlV/1FWqAFWqKlWqVVWq f1WqqlWq1FXUAFXUKlXUVVXUf1XUqlXU1H8AAH8AKn8AVX8Af38Aqn8A1H8qAH8qKn8qVX8qf38q qn8q1H9VAH9VKn9VVX9Vf39Vqn9V1H9/AH9/Kn9/VX9/f39/qn9/1H+qAH+qKn+qVX+qf3+qqn+q 1H/UAH/UKn/UVX/Uf3/Uqn/U1KoAAKoAKqoAVaoAf6oAqqoA1KoqAKoqKqoqVaoqf6oqqqoq1KpV AKpVKqpVVapVf6pVqqpV1Kp/AKp/Kqp/Vap/f6p/qqp/1KqqAKqqKqqqVaqqf6qqqqqq1KrUAKrU KqrUVarUf6rUqqrU1NQAANQAKtQAVdQAf9QAqtQA1NQqANQqKtQqVdQqf9QqqtQq1NRVANRVKtRV VdRVf9RVqtRV1NR/ANR/KtR/VdR/f9R/qtR/1NSqANSqKtSqVdSqf9SqqtSq1NTUANTUKtTUVdTU f9TUqtTU1AAAAAwMDBkZGSYmJjMzMz8/P0xMTFlZWWZmZnJycn9/f4yMjJmZmaWlpbKysr+/v8zM zNjY2OXl5fLy8v/78KCgpICAgP8AAAD/AP//AAAA//8A/wD//////ywAAAAACgANAAAIPgDxCRw4 EAC+fwcQKjxgMCHDhAD+GUQYEcDDhhIzVjwIkSJDfA8zQjxYUWRDixVHmnSI0aHCiS5ZAphJs2ZA ADs= --_005_234B758DE9A64449BEB6BB5D1345CA7A3615C015mbx026e1nj2exch_--