X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3748539 for flyrotary@lancaironline.net; Tue, 07 Jul 2009 18:37:00 -0400 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (sv1-1.per.aanet.com.au [203.24.100.68]) by poplet2.per.eftel.com (Postfix) with ESMTP id 4F842173481 for ; Wed, 8 Jul 2009 06:36:21 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id 79F7FBEC004 for ; Wed, 8 Jul 2009 06:36:20 +0800 (WST) Message-ID: <0B3C2B301D3245B684CACCA32DBA6A11@ownerf1fc517b8> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: INJECTION OIL IN FUEL Date: Wed, 8 Jul 2009 08:36:24 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01C9FFA7.2D7C9350" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Antivirus: avast! (VPS 090707-0, 07/07/2009), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0005_01C9FFA7.2D7C9350 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Bill, I was well aware of that, but wondered about the design Yvon was using = and if he was running it with an isolator and getting a feel for the = life of the belt. Actually using one on anything over 100hp and getting = any reasonable life was news to me, but I'm always willing to hear about = anything new. George (down under) ----- Original Message -----=20 From: wrjjrs@aol.com=20 To: Rotary motors in aircraft=20 Sent: Wednesday, July 08, 2009 8:24 AM Subject: [FlyRotary] Re: INJECTION OIL IN FUEL George, The tooth belts DO NOT isolate TV. The only way you would get any = isolation is to use a multiple "V"belt and they must be a matched set to = work at all well. They have a short life too. The HTD belts have a = Arimid fiber belt that is stronger than steel for the same weight. THESE = BELTS CANNOT BE USED TO ISOLATE TORTIONAL VIBRATION. Sorry to shout but = this is a common idea and needs to be squashed out of everybodys head = ASAP. If you run one of these belts you will still need a lovejoy or = Centaflex doughnut for TV. You must still be sure the system isn't in = the normal TV range for the engine/system. Everybody should put BD-5 and Tortional Vibration in their search = engine. It makes for very interesting reading. Bill Jepson -----Original Message----- From: George Lendich To: Rotary motors in aircraft Sent: Tue, Jul 7, 2009 2:44 pm Subject: [FlyRotary] Re: INJECTION OIL IN FUEL Yvon, I would be interested in how this works for you in terms of life of = belts etc. I would also be interested in the design for my single rotor. = Do you incorporate torsional vibration isolators or rely on the belt to = do that work? George (down under) Allo Bernie The cog-belt PSRU that I fly is based on Richard Finch's 1986 = design. I had some parts made by a machine shop and I put it together = myself and adapted it to my 13B engine. The belt and sprockets are Gates = Poly Chain GT products. RPM sprocket limit 3200 rpm. Gates rates the = belt HP limit at about 150 HP Yvon=20 ----- Original Message -----=20 From: Berniehb7448@wmconnect.com=20 To: Rotary motors in aircraft=20 Sent: Friday, July 03, 2009 1:56 PM Subject: [FlyRotary] Re: INJECTION OIL IN FUEL Sorry, I don't have an answer, but I would like to know more about = your cog-belt PSRU, who makes it and what are the operating limits (like = HP limit, RPM limit, etc.). Thank you. Bernie=20 -------------------------------------------------------------------------= ----- A Good Credit Score is 700 or Above. See yours in just 2 easy steps! ------=_NextPart_000_0005_01C9FFA7.2D7C9350 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks Bill,
I was well aware of that, but wondered = about the=20 design Yvon was using and if he was running it with an = isolator and=20 getting a feel for the life of the belt. Actually using one on anything = over=20 100hp and getting any reasonable life was news to me, but I'm always = willing to=20 hear about anything new.
George (down under)
----- Original Message -----
From:=20 wrjjrs@aol.com
Sent: Wednesday, July 08, 2009 = 8:24=20 AM
Subject: [FlyRotary] Re: = INJECTION OIL IN=20 FUEL

George,
The tooth belts DO NOT isolate TV. The only = way you=20 would get any isolation is to use a multiple "V"belt and they must be = a=20 matched set to work at all well. They have a short life too. The HTD = belts=20 have a Arimid fiber belt that is stronger than steel for the same = weight.=20 THESE BELTS CANNOT BE USED TO ISOLATE TORTIONAL VIBRATION. Sorry to = shout but=20 this is a common idea and needs to be squashed out of everybodys head = ASAP. If=20 you run one of these belts you will still need a lovejoy or Centaflex = doughnut=20 for TV. You must still be sure the system isn't in the normal TV range = for the=20 engine/system.
Everybody should put BD-5 and Tortional Vibration in = their=20 search engine. It makes for very interesting reading.
Bill=20 Jepson


-----Original Message-----
From: George Lendich=20 <lendich@aanet.com.au>
To: Rotary motors in aircraft=20 <flyrotary@lancaironline.net>
Sent: Tue, Jul 7, 2009 2:44=20 pm
Subject: [FlyRotary] Re: INJECTION OIL IN FUEL

Yvon,
I would be interested in how this = works for you=20 in terms of life of belts etc. I would also be interested in the = design for my=20 single rotor. Do you incorporate torsional vibration isolators or rely = on the=20 belt to do that work?
George (down under)

Allo = Bernie
The cog-belt PSRU that I = fly is based=20 on Richard Finch's 1986 design. I had some parts made by a machine = shop and=20 I put it together myself and adapted it to my 13B engine. The = belt and=20 sprockets are Gates Poly Chain GT products. RPM sprocket limit = 3200=20 rpm. Gates rates the belt HP limit at about 150 = HP
Yvon 
----- Original Message ----- =
From:=20 Berniehb7448@wmconnect.com= =20
To: Rotary motors in = aircraft=20
Sent: Friday, July 03, 2009 = 1:56=20 PM
Subject: [FlyRotary] Re: = INJECTION=20 OIL IN FUEL

Sorry, = I don't have=20 an answer, but I would like to know more about your cog-belt PSRU, = who=20 makes it and what are the operating limits (like HP limit, RPM = limit,=20 etc.).  Thank you. Bernie =
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