X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao11.cox.net ([68.230.241.28] verified) by logan.com (CommuniGate Pro SMTP 5.0c7) with ESMTP id 800793 for flyrotary@lancaironline.net; Mon, 31 Oct 2005 12:54:24 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.28; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao11.cox.net (InterMail vM.6.01.05.02 201-2131-123-102-20050715) with ESMTP id <20051031175313.MYWE9394.fed1rmmtao11.cox.net@BigAl> for ; Mon, 31 Oct 2005 12:53:13 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Break-In? Date: Mon, 31 Oct 2005 09:53:44 -0800 Message-ID: <000001c5de44$098dfd90$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C5DE00.FB6ABD90" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C5DE00.FB6ABD90 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 Anyone have any more suggestions on break-in tasks? I re-read some = archived posts on the subject. It sounds like I should keep it under 3000RPM for = the first hour or so and then move it up. Beyond that, and with no more = leaks to fix, I'm at a loss to know what, if anything, I need to do. I really didn't expect it to be this easy. Count your blessings; and keep on runnin'. I had probably about 2 hours = on my engine when we started dong the WOT power runs on the dyno; and I = have no reason to believe that did any damage. I'd only expect that the power = would be a bit higher after more hours. =20 Before first flight I want to have at least 10 hours of ground running = done with at least 1 hour at or above 5000 RPM - and that 1 hour can't be the last hour.=20 Sounds like a good plan; spend your time getting mixture and other measurements dialed in. I've got about 7 hours on mine with dyno runs = and runs on the plane, but only a few minutes at WOT at about 52-5300 rpm. I expect to get the hour or so of full power ground runs after I get to = the airport. =20 Should I be checking compression every so often? Timing? Tear the engine down and Mic all the parts :-) ?=20 =20 If it's running smooth and putting out good power I see no need to check compression - unless you really want to. Can't hurt to verify timing = before you go fly. Look for anything that might be vibrating - lines, wires, = etc. and get everything tied down; not just in the engine compartment, but anywhere on the plane. Think about teardown to check wear after about = 2000 hours; or some clear indication of something not right. =20 Sounds like you're doing great. =20 Best, =20 Al ------=_NextPart_000_0001_01C5DE00.FB6ABD90 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Anyone have any more = suggestions on break-in tasks? I re-read some archived posts on the subject. It sounds = like I should keep it under 3000RPM for the first hour or so and then move it up. Beyond that, and with no more leaks to fix, I’m at a = loss to know what, if anything, I need to do. I really didn’t expect it to = be this easy.

Count your blessings; and keep on = runnin’. I had probably about 2 hours on my engine when we started dong the WOT = power runs on the dyno; and I have no reason to believe that did any = damage. I’d only expect that the power would be a bit higher after more = hours.

Before first flight I want = to have at least 10 hours of ground running done with at least 1 hour at or = above 5000 RPM – and that 1 hour can’t be the last hour. =

Sounds like a good plan; spend = your time getting mixture and other measurements dialed in. I’ve got = about 7 hours on mine with dyno runs and runs on the plane, but only a few = minutes at WOT at about 52-5300 rpm. I expect to get the hour or so of full power = ground runs after I get to the airport.

Should I be checking = compression every so often? Timing? Tear the engine down and Mic all the parts = J ?

If it’s running smooth and = putting out good power I see no need to check compression – unless you = really want to. Can’t hurt to verify timing before you go = fly. Look for anything that might be vibrating – lines, wires, etc. and get everything tied down; not just in the engine compartment, but anywhere = on the plane. Think about teardown to check wear after about 2000 hours; = or some clear indication of something not right.

Sounds like you’re doing = great.

Best,

Al

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