X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-bw0-f226.google.com ([209.85.218.226] verified) by logan.com (CommuniGate Pro SMTP 5.3.4) with ESMTP id 4168809 for flyrotary@lancaironline.net; Wed, 17 Mar 2010 06:50:49 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.218.226; envelope-from=msteitle@gmail.com Received: by bwz26 with SMTP id 26so318078bwz.7 for ; Wed, 17 Mar 2010 03:50:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=OYfj66PzcgLCGDR4e5Lk/IIS4pFH/qDR3PdwpO/s7Yk=; b=v9ofeKXfEomYJ+sgv2niaN/f8gBbOEUsYHW13qLy3GZ7dhL1kauUIk+VOJQW/dS5Ox lk4qO+rQSUAa9YPDm9T/qJQV8ZhUyE3olcntVEWzdWPpUxyI/mMtyYaDWAsfuCCDD92K gLOYJCgHTShSk8DYyVDe2APe8ziFPb8310r+E= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=uNNpISoJvXkODn0wcmr3ZIPtPZGBLTdAZu+iNxS2lq101sdBdwWA3gKR4mta5yndQ8 fEvZGCr87uyTHc0G3ye2+bQpuie6eX/Ce73JtfzWTn8YHW4bwoN3b6LyP48bSHcYqd0y NyT6Hl9Bk9drk6Rj6pIZ7Eaw2sp59quyTHZnI= MIME-Version: 1.0 Received: by 10.204.141.156 with SMTP id m28mr973240bku.207.1268823010627; Wed, 17 Mar 2010 03:50:10 -0700 (PDT) In-Reply-To: References: Date: Wed, 17 Mar 2010 05:50:10 -0500 Message-ID: <5cf132c1003170350k2fa5266w22b764f3cc6b124c@mail.gmail.com> Subject: Re: [FlyRotary] Re: RD2-C Flywheel Adapter Plate From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015174780b6d4d2c90481fce018 --0015174780b6d4d2c90481fce018 Content-Type: text/plain; charset=ISO-8859-1 Al, You are correct, there are some streaks coming from the input shaft area, but those are grease streaks as I put a light coat of grease in the pilot bearing hole and on the spline. Mark On Tue, Mar 16, 2010 at 10:09 PM, Al Wick wrote: > This used to happen to the old Lou Ross psru. Torsional effects. Origin > was the pilot bearing. Looking at your pic, aren't I seeing streak origin in > pilot area? Can't tell. > > -al wick > > ----- Original Message ----- > *From:* Tracy Crook > *To:* Rotary motors in aircraft > *Sent:* Tuesday, March 16, 2010 7:18 PM > *Subject:* [FlyRotary] Re: RD2-C Flywheel Adapter Plate > > 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 >> >> > --0015174780b6d4d2c90481fce018 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Al,=A0

You are correct, there are some streaks coming fr= om the input shaft area, but those are grease streaks as I put a light coat= of grease in the pilot bearing hole and on the spline. =A0

<= /div>
Mark

On Tue, Mar 16, 2010 at 10:09 P= M, Al Wick <alwick@= juno.com> wrote:
This used to happen to the old Lou Ros= s psru.=20 Torsional effects. Origin was the pilot bearing. Looking at your pic, aren&= #39;t I=20 seeing streak origin in pilot area? Can't tell.
=A0
-al wick
----- Original Message -----
From:=20 Tracy=20 Crook
Sent: Tuesday, March 16, 2010 7:18=20 PM
Subject: [FlyRotary] Re: RD2-C Flyw= heel=20 Adapter Plate

I've never encountered this before but I'd=A0 remo= ve the=20 damper, and examine the streaks under a microscope or 10x loop.=A0=20 Obviously you want to check for looseness of the rivets.=A0 Try gripping= =20 the shop head with vice grips and see if you can turn the rivet in the=20 hole.=A0 If yes, return the damper to me and I'll evaluate & rewo= rk it=20 as needed.

Tracy

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

The first time I noticed the streaks I just cleaned them off.=20 =A0They may have be caused by corrosion X used previously, but I have n= o=20 way to tell. =A0Approx. 2-3 hours of running have occurred since I firs= t=20 wiped it clean and reinstalled the psru and I have not used any corrosi= on X=20 or anything else that could cause the streaks to reappear. =A0I've= =20 attached a picture of the other side which shows similar streaking.=20 =A0So, my guess is they are aluminum streaks. =A0Assuming they are=20 smoking rivets, what's the recommended fix? =A0

Mark=A0
On Tue, Mar 16, 2010 at 9:00 PM, Tracy Crook <= ;tracy@rotary= aviation.com> wrote:
I get similar looking streaks caused by the corrosion X that=20 I spray around in that area to prevent rust & corrosion.=A0 But i= f=20 that is aluminum dust instead of oil, it requires immediate=20 attention.=A0 Are you able to tell?

Tracy

On Tue, Mar 16, 2010 at 9:16 PM, Mark Steitle = <msteitle@gmail.= com>=20 wrote:
This post is directed toward those of you that have a few hund= red=20 hours or more on your RD2-x gearbox. =A0I'm getting "smoke= " streaks=20 leading out radially from the circle of rivets on the flywheel adap= ter=20 plate on my 20B. =A0Do others find these streaks on their adapter= =20 plates? =A0I'm wondering if the rivets are working loose and ne= ed to=20 be replaced or upgraded. =A0Maybe I need a beefier adapter plate.= =20 =A0Am I worrying over nothing, or is this something that is headed= =20 for an in-flight failure? =A0

Mark S.
Austin

--
Homepage: =A0http://www.flyrotary.com/
A= rchive and UnSub: =A0=20 http://mail.lancaironline.net:81/lists/flyrotary/List= .html




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Homepage:=20 =A0http://www.f= lyrotary.com/
Archive and UnSub: =A0 http://mail.lanca= ironline.net:81/lists/flyrotary/List.html



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