X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.202.165.221] (HELO smtpout05.prod.mesa1.secureserver.net) by logan.com (CommuniGate Pro SMTP 5.2c4) with SMTP id 2643048 for flyrotary@lancaironline.net; Sun, 13 Jan 2008 03:56:11 -0500 Received-SPF: none receiver=logan.com; client-ip=64.202.165.221; envelope-from=jerry@jerryhey.com Received: (qmail 11490 invoked from network); 13 Jan 2008 08:55:28 -0000 Received: from unknown (69.69.241.225) by smtpout05-04.prod.mesa1.secureserver.net (64.202.165.221) with ESMTP; 13 Jan 2008 08:55:28 -0000 Message-Id: From: Jerry Hey To: "Rotary motors in aircraft" In-Reply-To: Content-Type: multipart/alternative; boundary=Apple-Mail-1-716521994 Mime-Version: 1.0 (Apple Message framework v915) Subject: Re: [FlyRotary] Re: Motor Mount Bushings Date: Sun, 13 Jan 2008 03:55:37 -0500 References: X-Mailer: Apple Mail (2.915) --Apple-Mail-1-716521994 Content-Type: text/plain; charset=WINDOWS-1252; format=flowed; delsp=yes Content-Transfer-Encoding: quoted-printable Ray, assuming those are Barry Mounts, then there are two problems. =20 First the "snubbing washers" are too small. They should exceed the =20 diameter of the rubber bushing. The Barry catalogue relates the proper =20= snubbing washer to the diameter and thickness of the bushing. =20 Secondly, in one photo it appears that the Barry Rubber bushing is not =20= drawn down into the receiver. This would create an unstable situation =20= where the Barry Bushing can tilt. Of course, I have never worked =20 with one if the CCI mounts so I might be missing something. Jerry On Jan 12, 2008, at 7:54 PM, Bill Bradburry wrote: > Yes the spacer tube is inside and the bolts are torqued down on it. =20= > What is happening is that the rubber that the bushing is made of is =20= > crushing down. It is too soft to support the weight of the engine =20 > with the PSRU on it at that end. I would imagine that the engine/=20 > PSRU center of gravity is close to those bushings and they are =20 > supporting 90% or so of the total weight. The two bushings at the =20= > rear are ok, but they have very little weight on them. > > Bill B > > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] =20= > On Behalf Of Ed Klepeis > Sent: Saturday, January 12, 2008 6:19 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: Motor Mount Bushings > Bill > Do you have the correct length spacer tube inside. That would =20 > allow the bushing to crush down like that. if it is not the right =20 > length > = Regards > = Ed=20 > Klepeis > ----- Original Message ----- > From: Bill Bradburry > To: Rotary motors in aircraft > Sent: Saturday, January 12, 2008 5:10 PM > Subject: [FlyRotary] Motor Mount Bushings > > I noticed that the bushings that Fred furnished with the motor mount =20= > plate are not up the job. The bottom half has crushed down by close =20= > to =BC inch. I wonder what mounts the rest of you are using? The =20= > lower picture is of the left (pilot) side and the top is the copilot =20= > side. Both are on the front. The rear seems to be holding up ok. =20= > I first noticed this when I saw that my spinner was not aligned with =20= > the cowl very well=85 > > Any suggestions would be greatly appreciated. > > Thanks, > Bill B > > > > --Apple-Mail-1-716521994 Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Ray,  assuming those are = Barry Mounts, then there are two problems. First the "snubbing washers" = are too small.  They should exceed the diameter of the rubber = bushing. The Barry catalogue relates the proper snubbing washer to the = diameter and thickness of the bushing.   Secondly, in one photo it = appears that the Barry Rubber bushing is not drawn down into the = receiver.  This would create an unstable situation where the Barry = Bushing can tilt.   Of course,  I have never worked with one = if the CCI mounts so I might be missing something.  Jerry





On Jan 12, = 2008, at 7:54 PM, Bill Bradburry wrote:

Yes the = spacer tube is inside and the bolts are torqued down on it.  What = is happening is that the rubber that the bushing is made of is crushing = down.  It is too soft to support the weight of the engine with the = PSRU on it at that end.  I would imagine that the engine/PSRU = center of gravity is close to those bushings and they are supporting 90% = or so of the total weight.   The two bushings at the rear are = ok, but they have very little weight on = them.
Bill = B
 Rotary motors in aircraft [ On Behalf Of Ed = Klepeis
Sent: Saturday, January 12, 2008 = 6:19 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Motor Mount Bushings<= /div>
 Saturday, January 12, 2008 = 5:10 PM
Subject: [FlyRotary] = Motor Mount Bushings<= /div>
I noticed that the bushings that Fred = furnished with the motor mount plate are not up the job.  The = bottom half has crushed down by close to =BC inch.   I wonder = what mounts the rest of you are  using?  The lower picture is = of the left (pilot) side and the top is the copilot side.  Both are = on the front.  The rear seems to be holding up ok.  I first = noticed this when I saw that my spinner was not aligned with the cowl = very well=85
Any suggestions would be = greatly appreciated.
 
Thanks,
Bill B