X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail25.syd.optusnet.com.au ([211.29.133.166] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTPS id 951580 for flyrotary@lancaironline.net; Fri, 20 May 2005 19:25:23 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.133.166; envelope-from=lendich@optusnet.com.au Received: from george (d211-31-163-235.dsl.nsw.optusnet.com.au [211.31.163.235]) by mail25.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j4KNOXPS021581 for ; Sat, 21 May 2005 09:24:35 +1000 Message-ID: <005a01c55d93$bc4b3bf0$eba31fd3@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Sized 13b Date: Sat, 21 May 2005 09:29:14 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0057_01C55DE7.8D8C5520" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_0057_01C55DE7.8D8C5520 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Georges, What did he mean they don't use planetary reduction units what the hell = do they use ? I assume that the static balancing they use is by matching the rotors = carefully. It has been noticed that after rebuilding some motors never run as = smoothly as the factory motors and it has been suggested that more = carefully matching the rotors goes a long way in smoothing this out. George ( down under)=20 Group FWIW I had heard of a Christavia Mk IV that had a 13B with plugs up = that "sized up". I tracked him down & phoned him, he told me that the = engine sized while taxing for take off. I asked him what the problem was = he told me that he didn't know, he said that he sent the engine back to = Atkins. I sent Atkins an email to enquire about the reason for the = seizure. To my surprise at 7:30 this morning Atkins phoned me, he said that the engine was mounted "plugs up" with a home made = dry sump system that allowed the engine to run without oil pressure on = start up until the system primed itself. The results was that all the = bearings in the engine were "wiped out" completely (didn't size up = really just stopped). Atkins claims the plugs up added to the problem. = He said he no longer uses "planetary "gear reduction drive & that he = uses Castrol 20/50 instead of synthetic also said he had a customer with = over 2000 hrs, He mumbled something when I mentioned Tracy's 1450 hours = but I didn't get what it was. I guess he called me to avoid speculation = that the engine failure was a result of his workmanship. I asked him = about engine balancing, he said they do "static" balancing in house = (what ever that means). so it seems like this was "builder error" He ran = it for over 200hrs, replaced it with a220hp Franklin 6 cyl. & is as = happy with the change as " a pig in s..." Thought you might be interested. Georges B.=20 =20 =20 -------------------------------------------------------------------------= ----- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 266.11.13 - Release Date: 5/19/2005 -------------------------------------------------------------------------= ----- >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_0057_01C55DE7.8D8C5520 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Georges,
What did he mean they don't use planetary reduction = units what=20 the hell do they use ?
I assume that the static balancing they use is  = by=20 matching the rotors carefully.
It has been noticed that after rebuilding some = motors=20 never run as smoothly as the factory motors and it has been suggested = that more=20 carefully matching the rotors goes a long way in smoothing this=20 out.
George ( down under) 
Group FWIW
I had heard of a Christavia Mk IV that had a 13B with plugs = up that=20 "sized up". I tracked him down & phoned him, he told me that = the=20 engine sized while taxing for take off. I asked him what the = problem was=20 he told me that he didn't know, he said that he sent the engine = back to=20 Atkins. I sent Atkins an email to enquire about the reason for = the=20 seizure. To my surprise at 7:30 this morning Atkins phoned = me,
he said that the engine was mounted "plugs up" with a home = made dry=20 sump system that allowed the engine to run without oil pressure = on start=20 up until the system primed itself. The results was that all the = bearings=20 in the engine were "wiped out" completely (didn't size up really = just=20 stopped). Atkins claims the plugs up added to the problem. He = said he no=20 longer uses "planetary "gear reduction drive & that he uses = Castrol=20 20/50 instead of synthetic also said he had a customer with over = 2000=20 hrs, He mumbled something when I mentioned Tracy's 1450 hours = but I=20 didn't get what it was. I guess he called me to avoid = speculation that=20 the engine failure was a result of his workmanship. I asked him = about=20 engine balancing, he said they do "static" balancing in house = (what ever=20 that means). so it seems like this was "builder error" He ran it = for=20 over 200hrs, replaced it with a220hp Franklin 6 cyl. & is as = happy=20 with the change as " a pig in s..."
Thought you might be interested.
Georges B.

No virus found in this outgoing message.
Checked by AVG=20 Anti-Virus.
Version: 7.0.322 / Virus Database: 266.11.13 - Release = Date:=20 5/19/2005

>>  Homepage: =20 http://www.flyrotary.com/
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