Return-Path: Received: from [207.230.226.92] (HELO corpprod2.canfor.ca) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2957959 for flyrotary@lancaironline.net; Fri, 30 Jan 2004 13:32:19 -0500 Received: from exchange.canfor.ca ([198.162.162.49]) by corpprod2.canfor.ca with Microsoft SMTPSVC(5.0.2195.5329); Fri, 30 Jan 2004 10:31:48 -0800 Received: by mail.canfor.ca with Internet Mail Service (5.5.2653.19) id ; Fri, 30 Jan 2004 10:31:48 -0800 Message-ID: <1F17B59A61D4194095359264D24D22A2708C28@mailman.canfor.ca> From: "Bartrim, Todd" To: 'Rotary motors in aircraft' Subject: RE: [FlyRotary] Re: Cruddy water passages Date: Fri, 30 Jan 2004 10:31:46 -0800 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C3E75F.50DFCEE0" Return-Path: sbartrim@mail.canfor.ca X-OriginalArrivalTime: 30 Jan 2004 18:31:48.0234 (UTC) FILETIME=[522176A0:01C3E75F] This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01C3E75F.50DFCEE0 Content-Type: text/plain > I also considered sand blasting, but again a concern is damaging the > critical surfaces, not to mention getting any grains of sand left in oil > passages. > > Hi Finn; I glassbeaded mine, with good results. Allot of scale came out of them. I covered all critical surfaces with several layers of duct tape which worked fine, then directed then beader nozzle into the passageways. Afterward I blew them out with compressed air. You are right to be concerned about left over grains. I blew & I blew, from all directions in all passages, (this actually sounds a bit X-rated :-), and when I felt I must have it all, I would get a little more. Finally I got to the point where I could get no more. Then I flushed with solvent for awhile and then air again and found no more, so I'm confident that all passages are clean. If I was to do it again, I would plug the oil passageways before beading, as they don't really require any serious cleaning beyond a solvent flush, and concentrate on the coolant passages. Any left over glassbeads/sand in the coolant passages shouldn't be any worse than the scale fragments that you are removing, however with a little effort all should be removed easily enough. S. Todd Bartrim Turbo 13B RX-9endurance C-FSTB http://www3.telus.net/haywire/RV-9/C-FSTB.htm "Imagination is more important than knowledge" -Albert Einstein ------_=_NextPart_001_01C3E75F.50DFCEE0 Content-Type: text/html Content-Transfer-Encoding: quoted-printable RE: [FlyRotary] Re: Cruddy water passages

    I also considered = sand blasting, but again a concern is damaging the
    critical surfaces, = not to mention getting any grains of sand left in oil

passages.


Hi Finn;
        I glassbeaded mine, with good results. Allot of scale = came out of them. I covered all critical surfaces with several layers = of duct tape which worked fine, then directed then beader nozzle into = the passageways. Afterward I blew them out with compressed air. You are = right to be concerned about left over grains. I blew & I = blew,  from all directions in all passages, (this actually sounds = a bit X-rated :-), and when I felt I must have it all, I would get a = little more. Finally I got to the point where I could get no more. Then = I flushed with solvent for awhile and then air again and found no more, = so I'm confident that all passages are clean.

        If I was to do it again, I would plug the oil = passageways before beading, as they don't really require any serious = cleaning beyond a solvent flush, and concentrate on the coolant = passages. Any left over glassbeads/sand in the coolant passages = shouldn't be any worse than the scale fragments that you are removing, = however with a little effort all should be removed easily = enough.

S. Todd Bartrim =20
Turbo 13B
RX-9endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm

        "Imagination is more important than = knowledge"
        =         =         =         =         -Albert Einstein


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