X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Fri, 15 Sep 2006 19:03:34 -0400 Message-ID: X-Original-Return-Path: Received: from imo-d03.mx.aol.com ([205.188.157.35] verified) by logan.com (CommuniGate Pro SMTP 5.1c.4) with ESMTP id 1404910 for lml@lancaironline.net; Fri, 15 Sep 2006 15:19:27 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.157.35; envelope-from=JIMRHER@aol.com Received: from JIMRHER@aol.com by imo-d03.mx.aol.com (mail_out_v38_r7.6.) id q.322.bc3c42e (41812) for ; Fri, 15 Sep 2006 15:18:42 -0400 (EDT) From: JIMRHER@aol.com X-Original-Message-ID: <322.bc3c42e.323c5692@aol.com> X-Original-Date: Fri, 15 Sep 2006 15:18:42 EDT Subject: Backfire Viberation X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1158347922" X-Mailer: 9.0 Security Edition for Windows sub 5324 X-Spam-Flag: NO -------------------------------1158347922 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit On Sep 14, 2006, at 8:40 AM, Marvin Kaye wrote: Is it that he has encountered it more with lightweight props? Yes. I can think of no correlation to the prop weight. Walter Hi Walter, My TSIO 550E with MT 4 Blade had a very strange vibration after engine overhaul that three prop balances didn't get rid of. One very knowledgeable guy asked what prop I had and said that with the light wood blades it didn't have roatating mass or flywheel effect and that he thought I had a plugged injector. I had all the injectors pulled and inspected for dirt before cleaning. They found a small restricting piece in the cylinder that I told him had a higher than normal EGT. That fixed the vibration problem. Live and learn, even at my age. Jim Hergert L4P, N6XE (An Sexy) 400+ hrs. -------------------------------1158347922 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
On Sep 14, 2006, at 8:40 AM, Marvin Kaye=20 wrote:

Is
it that he has encountered it more with lightweight=20 props?


Yes. I can think of no correlation to the prop=20 weight.

Walter
 
Hi Walter,
My TSIO 550E with MT 4 Blade had a very strange vibration after engine=20 overhaul that three prop balances didn't get rid of. One very knowledgeable=20= guy=20 asked what prop I had and said that with the light wood blades it didn't hav= e=20 roatating mass or flywheel effect and that he thought I had a plugged inject= or.=20 I had all the injectors pulled and inspected for dirt before cleaning. They=20 found a small restricting piece in the cylinder that I told him had a higher= =20 than normal EGT. That fixed the vibration problem. Live and learn, even at m= y=20 age.=20
 
Jim Hergert
L4P, N6XE
(An Sexy)
400+=20 hrs.
 -------------------------------1158347922--