X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-qy0-f179.google.com ([209.85.221.179] verified) by logan.com (CommuniGate Pro SMTP 5.3.4) with ESMTP id 4168432 for flyrotary@lancaironline.net; Tue, 16 Mar 2010 22:19:09 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.221.179; envelope-from=rwstracy@gmail.com Received: by qyk9 with SMTP id 9so323762qyk.1 for ; Tue, 16 Mar 2010 19:18:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to :content-type; bh=I01OSUQdWOiMGvhUFnGAJI/ICIDWy6kOYxGhlRp7R7s=; b=CY0EaPf8cL+TetmCYNrQAcMSOK0NsqMn10HxzgwusorAMTqabM+FTdlqZ0GBxpmwW6 FkVTQvSq8XvCU+FC3Uk/Xq5bcQcWh5ZqZdOOSCdZ/HqCVg2QL1IhGw3eUvA+BFQD1I3I HZdW5xXsh5REm43SthgBL0y+2N7Oox1kuB6bo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=ADPUieWjLAxkmzOq9zH5dUhOAomSCUDuxoMQxkwsd5ZlOsd+s5SU2zMWv/huPVARzd p32haWsEsfYtTaRttwda40O3W0aS0SDTlC5HPcjK8O27t97NPbTCodoHq1YkEgMEjI6t DXY2JNc0POC5XCQZsSx4xRrXphkTh0WcT0FME= MIME-Version: 1.0 Sender: rwstracy@gmail.com Received: by 10.224.33.71 with SMTP id g7mr70333qad.30.1268792313511; Tue, 16 Mar 2010 19:18:33 -0700 (PDT) In-Reply-To: References: Date: Tue, 16 Mar 2010 22:18:33 -0400 X-Google-Sender-Auth: 93d23fd56d81b787 Message-ID: <1b4b137c1003161918u3c50d425k310f510084434130@mail.gmail.com> Subject: Re: [FlyRotary] Re: RD2-C Flywheel Adapter Plate From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=000feaf148532402450481f5bb89 --000feaf148532402450481f5bb89 Content-Type: text/plain; charset=ISO-8859-1 I've never encountered this before but I'd remove the damper, and examine the streaks under a microscope or 10x loop. Obviously you want to check for looseness of the rivets. Try gripping the shop head with vice grips and see if you can turn the rivet in the hole. If yes, return the damper to me and I'll evaluate & rework it as needed. Tracy On Tue, Mar 16, 2010 at 10:08 PM, Mark Steitle wrote: > Tracy, > > The first time I noticed the streaks I just cleaned them off. They may > have be caused by corrosion X used previously, but I have no way to tell. > Approx. 2-3 hours of running have occurred since I first wiped it clean and > reinstalled the psru and I have not used any corrosion X or anything else > that could cause the streaks to reappear. I've attached a picture of the > other side which shows similar streaking. So, my guess is they are aluminum > streaks. Assuming they are smoking rivets, what's the recommended fix? > > Mark > > On Tue, Mar 16, 2010 at 9:00 PM, Tracy Crook wrote: > >> I get similar looking streaks caused by the corrosion X that I spray >> around in that area to prevent rust & corrosion. But if that is aluminum >> dust instead of oil, it requires immediate attention. Are you able to tell? >> >> Tracy >> >> On Tue, Mar 16, 2010 at 9:16 PM, Mark Steitle wrote: >> >>> This post is directed toward those of you that have a few hundred hours >>> or more on your RD2-x gearbox. I'm getting "smoke" streaks leading out >>> radially from the circle of rivets on the flywheel adapter plate on my 20B. >>> Do others find these streaks on their adapter plates? I'm wondering if the >>> rivets are working loose and need to be replaced or upgraded. Maybe I need >>> a beefier adapter plate. Am I worrying over nothing, or is this something >>> that is headed for an in-flight failure? >>> >>> Mark S. >>> Austin >>> >>> -- >>> Homepage: http://www.flyrotary.com/ >>> Archive and UnSub: >>> http://mail.lancaironline.net:81/lists/flyrotary/List.html >>> >>> >> > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > --000feaf148532402450481f5bb89 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable I've never encountered this before but I'd=A0 remove the damper, an= d examine the streaks under a microscope or 10x loop.=A0 Obviously you want= to check for looseness of the rivets.=A0 Try gripping the shop head with v= ice grips and see if you can turn the rivet in the hole.=A0 If yes, return = the damper to me and I'll evaluate & rework it as needed.

Tracy

On Tue, Mar 16, 2010 at 10:08 P= M, Mark Steitle <msteitle@gmail.com> wrote:
Tracy,

The first time I noticed the streaks I just clean= ed them off. =A0They may have be caused by corrosion X used previously, but= I have no way to tell. =A0Approx. 2-3 hours of running have occurred since= I first wiped it clean and reinstalled the psru and I have not used any co= rrosion X or anything else that could cause the streaks to reappear. =A0I&#= 39;ve attached a picture of the other side which shows similar streaking. = =A0So, my guess is they are aluminum streaks. =A0Assuming they are smoking = rivets, what's the recommended fix? =A0

Mark=A0

On Tue, Mar 16, 2010 at 9:00 PM, Tracy Crook= <tracy@rotaryaviation.com> wrote:
I get similar looking streaks caused by the corrosion X that I spray around= in that area to prevent rust & corrosion.=A0 But if that is aluminum d= ust instead of oil, it requires immediate attention.=A0 Are you able to tel= l?

Tracy

On Tue, Mar 16, 2010 at 9:16 PM, Mark Steitle <msteitle@gma= il.com> wrote:
This post is directed toward those of you that have a few hundred hours or = more on your RD2-x gearbox. =A0I'm getting "smoke" streaks le= ading out radially from the circle of rivets on the flywheel adapter plate = on my 20B. =A0Do others find these streaks on their adapter plates? =A0I= 9;m wondering if the rivets are working loose and need to be replaced or up= graded. =A0Maybe I need a beefier adapter plate. =A0Am I worrying over noth= ing, or is this something that is headed for an in-flight failure? =A0

Mark S.
Austin

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