X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp1.av-mx.com ([137.118.16.57] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4421623 for flyrotary@lancaironline.net; Fri, 06 Aug 2010 22:02:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=137.118.16.57; envelope-from=res12@fairpoint.net Received: from main (unknown [66.243.228.171]) (Authenticated sender: res12@fairpoint.net) by smtp1.av-mx.com (Postfix) with ESMTP id 87E7229171E for ; Fri, 6 Aug 2010 22:01:30 -0400 (EDT) Message-ID: <36EB6F0769664D0084E034EA8302A4EE@main> From: "Richard Sohn" To: "FlyROTARY" Subject: Shake-down testing single rotor Date: Fri, 6 Aug 2010 21:02:12 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003E_01CB35AA.A426A6A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5931 This is a multi-part message in MIME format. ------=_NextPart_000_003E_01CB35AA.A426A6A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Today I did the first test run with the complete engine, as it will go = in the airplane, except for the cooling. All systems worked great until = about 2minutes of 5000rpm, and oil started flying everywhere. The engine = kept running as if nothing happened. After engine shut down, I found = that the oil was coming mainly from the main seal at the flywheel. All = warm-up run was fine without any oil coming out anywhere. After = recalling everything I observed, including a couple of oil puffs coming = from the exhaust prior to the oil spilling out, my conclusion was = increasing pressure in the oil pan as the cause. Sure enough, the oil = pan breather hose was clogged by a muddubber. No telling when that = happened.=20 The engine is running extremely smooth. At 5000rpm and 4.6gal/h = producing about 55hp. I had no time to read all parameters before shut = down. I am using a 72" 3blade IVO prop. This makes it convenient = changing the load for different test runs. The new muffler seems to be a little quieter then the one on the = previous engine, which some of you may remember from Shady Bend. More data and pictures next week. BTW, is anybody planing to go to Paducah in September? Richard Sohn N2071U ------=_NextPart_000_003E_01CB35AA.A426A6A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Today I did the first test run with the = complete=20 engine, as it will go in the airplane, except for the cooling. All = systems=20 worked great until about 2minutes of 5000rpm, and oil started flying = everywhere.=20 The engine kept running as if nothing happened. After engine shut down, = I found=20 that the oil was coming mainly from the main seal at the flywheel. All = warm-up=20 run was fine without any oil coming out anywhere. After recalling = everything I=20 observed, including a couple of oil puffs coming from the exhaust prior = to the=20 oil spilling out, my conclusion was increasing pressure in the oil pan = as the=20 cause. Sure enough, the oil pan breather hose was clogged by a = muddubber. No=20 telling when that happened.
 
The engine is running extremely smooth. = At 5000rpm=20 and 4.6gal/h producing about 55hp. I had no time to read all parameters = before=20 shut down. I am using a 72" 3blade IVO prop. This makes it convenient = changing=20 the load for different test runs.
The new muffler seems to be a little = quieter then=20 the one on the previous engine, which some of you may remember from = Shady=20 Bend.
More data and pictures next = week.
 
BTW, is anybody planing to go to = Paducah in=20 September?
 
Richard = Sohn
N2071U
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