X-Virus-Scanned: clean according to Sophos on Logan.com X-PolluStop-Diagnostic: \eX-PolluStop-Score: 0.00\eX-PolluStop: Scanned with Niversoft PolluStop 2.1 RC1, http://www.niversoft.com/pollustop Return-Path: Received: from imo-d22.mx.aol.com ([205.188.144.208] verified) by logan.com (CommuniGate Pro SMTP 4.3c4) with ESMTP id 867228 for flyrotary@lancaironline.net; Wed, 13 Apr 2005 01:36:54 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.144.208; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-d22.mx.aol.com (mail_out_v38.7.) id q.156.4ef1a55c (4116) for ; Wed, 13 Apr 2005 01:36:03 -0400 (EDT) From: WRJJRS@aol.com Message-ID: <156.4ef1a55c.2f8e09c3@aol.com> Date: Wed, 13 Apr 2005 01:36:03 EDT Subject: Re: [FlyRotary] Re: Air Cleaners-Screens (was Re: Latest on the Motor Trouble To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1113370562" X-Mailer: 9.0 SE for Windows sub 5012 -------------------------------1113370562 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 4/12/2005 10:49:52 AM Pacific Standard Time, 13brv3@bellsouth.net writes: I think the key phrase is conventional wisdom. There's no doubt that dirt and such will eventually wear out an engine, all evidence suggests that it's going to take a long time to do that on a rotary in our application. As you likely know, Tracy has never had a filter, and flies off a grass strip. I can't think of anyone who's verified damage from anything that came from outside the engine, though it can certainly happen. Rusty, And Group, I don't know of a aircraft example, but I can tell you my old racing partner ran his brand new Yamaha TZ 250 on a just swept race track and had a guy crash in front of him. There was enough rocks and dirt kicked up that he ruined both cylinders. After wasting that $1000 he never ran without a trash screen again. It CAN happen to you even on a relatively clean strip. Run at least the Mooney system. Bill Jepson -------------------------------1113370562 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 4/12/2005 10:49:52 AM Pacific Standard Time,=20 13brv3@bellsouth.net writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>

I think th= e key phrase=20 is conventional wisdom. There's no doubt that dirt and such will=20 eventually wear out an engine, all evidence suggests that it's going to ta= ke a=20 long time to do that on a rotary in our application. As you likely k= now,=20 Tracy has never had a filter, and flies off a grass strip. I c= an't=20 think of anyone who's verified damage from anything that came fr= om=20 outside the engine, though it can certainly happen. =20

Rusty, And Group,

I don't know of a aircraft example, but I can tell you my old rac= ing=20 partner ran his brand new Yamaha TZ 250 on a just swept race track and had a= guy=20 crash in front of him. There was enough rocks and dirt kicked up that=20= he=20 ruined both cylinders. After wasting that $1000 he never ran without a trash= =20 screen again. It CAN happen to you even on a relatively clean strip. Run at=20 least the Mooney system.

Bill Jepson

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