X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-iw0-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5054699 for flyrotary@lancaironline.net; Sun, 17 Jul 2011 15:56:05 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=rwstracy@gmail.com Received: by iwn9 with SMTP id 9so2326851iwn.25 for ; Sun, 17 Jul 2011 12:55:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=subject:references:from:content-type:x-mailer:in-reply-to :message-id:date:to:content-transfer-encoding:mime-version; bh=JJEFKrGOSw8T0oyedr9GuRtjZW3rt+nqBGc0lXwcFzg=; b=Ukzlb4ojX95eBp6PNZ/xwLueY0x4PM3nGCynqer+6j3hbcFpA3lhq+bg4B5LoUeu2i ipwkRMgIcj6q6K8I7reaffT8EfqAoNaZBkLLzyArzmS4bWrfJTTf2WffjGaAPfGiGwYr zpn+I+jxGq2IiXjPZ0opyrwi/MSn7W5SJHjwU= Received: by 10.42.151.202 with SMTP id f10mr5887973icw.96.1310932530550; Sun, 17 Jul 2011 12:55:30 -0700 (PDT) Return-Path: Received: from [10.0.1.3] (99-197-145-127.cust.wildblue.net [99.197.145.127]) by mx.google.com with ESMTPS id o10sm4022207icc.12.2011.07.17.12.55.23 (version=TLSv1/SSLv3 cipher=OTHER); Sun, 17 Jul 2011 12:55:29 -0700 (PDT) Subject: Re: [FlyRotary] Re: Flex Plate Failure - Improvements References: From: Tracy Content-Type: multipart/alternative; boundary=Apple-Mail-19--234640040 X-Mailer: iPad Mail (8F191) In-Reply-To: Message-Id: <293E9920-39FA-4239-9313-32CA2DF0E47C@gmail.com> Date: Sun, 17 Jul 2011 15:55:09 -0400 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (iPad Mail 8F191) --Apple-Mail-19--234640040 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 I could be wrong but I really think the input shaft end play angle is a red h= erring, at least on the RD-1x drive. Even if there were some evidence of fo= re/aft movement evidence on the spline it could have been caused by the awfu= l chaos that was going on with that completely destroyed flex plate causing t= he damper to move axially on the input shaft. If there is any fore/aft movement of the input shaft, there is a SERIOUS pro= blem with the drive that would be far more critical than the flex plate issu= e. Tracy =20 Sent from my iPad On Jul 16, 2011, at 4:01 PM, "Bill Bradburry" wro= te: > David, >=20 > =20 >=20 > Is it possible for you to measure the wear mark on the RD1-X drive input s= haft splines to see if there is any indication that the RD1-X adapter plate h= as moved in a forward/back linear fashion? If there is, then wherever that i= s coming from is the problem. It is either flex in the flex plate, or end p= lay in the input shaft. >=20 > =20 >=20 > Everybody is trying to fix flex in the flexplate, but I don=E2=80=99t thin= k we have definitely ruled out end play in the input shaft yet. >=20 > =20 >=20 > Bill B --Apple-Mail-19--234640040 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
I could be wrong but I really think the= input shaft end play angle is a red herring, at least on the RD-1x drive. &= nbsp;Even if there were some evidence of fore/aft movement evidence on the s= pline it could have been caused by the awful chaos that was going on with th= at completely destroyed flex plate causing the damper to move axially on the= input shaft.

If there is any fore/aft movement of t= he input shaft, there is a SERIOUS problem with the drive that would be far m= ore critical than the flex plate issue.

Tracy
=

  

Sent from my iPad

On J= ul 16, 2011, at 4:01 PM, "Bill Bradburry" <bbradburry@bellsouth.net> wrote:

David,

 

Is it possible for you to measure the w= ear mark on the RD1-X drive input shaft splines to see if there is any indicatio= n that the RD1-X adapter plate has moved in a forward/back linear fashion?&nbs= p; If there is, then wherever that is coming from is the problem.  It is eith= er flex in the flex plate, or end play in the input shaft.

 

Everybody is trying to fix flex in the flexplate, but I don=E2=80=99t think we have definitely ruled out end play i= n the input shaft yet.

 

Bill B

= --Apple-Mail-19--234640040--