X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao104.cox.net ([68.230.241.42] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3748622 for flyrotary@lancaironline.net; Tue, 07 Jul 2009 20:32:31 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.42; envelope-from=alventures@cox.net Received: from fed1rmimpo01.cox.net ([70.169.32.71]) by fed1rmmtao104.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20090708003153.MKPA17135.fed1rmmtao104.cox.net@fed1rmimpo01.cox.net> for ; Tue, 7 Jul 2009 20:31:53 -0400 Received: from BigAl ([72.192.133.78]) by fed1rmimpo01.cox.net with bizsmtp id DCXt1c0061hf1Cg03CXtfY; Tue, 07 Jul 2009 20:31:53 -0400 X-VR-Score: -200.00 X-Authority-Analysis: v=1.0 c=1 a=Ia-xEzejAAAA:8 a=3oc9M9_CAAAA:8 a=Hl1Gy0H5AAAA:8 a=yfh0b8K4AAAA:8 a=MP_20UxOAAAA:8 a=_oJR0VilAAAA:8 a=-USKj_bTDUZsSGUE4WQA:9 a=OotbfFFapjK3R3O4MAsA:7 a=dt7N99SKnlKAhMVZ8gXHSOfVdc0A:4 a=EzXvWhQp4_cA:10 a=U8Ie8EnqySEA:10 a=7PO7wlESM_wA:10 a=UDDdsT_PkOH0MgCX:21 a=bvOXXYXPLbPXd1O-:21 a=gc2944eZ-9Xc-NHJGJYA:7 a=r5KNwcV2qzFbNS--F40aNMlLBWoA:4 a=u_xTeHn5YtvE-O8U:21 a=S7pWGZGdg65qOuVN:21 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: Subject Date: Tue, 7 Jul 2009 17:32:35 -0800 Message-ID: <611F9F5EBA954C809573A02E3B351CB9@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0010_01C9FF28.EAE4AEC0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6838 Importance: Normal Thread-Index: Acn/U3LKio2Fotr0QWeLaGO+odCoogAGAewg In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_0010_01C9FF28.EAE4AEC0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Just a friendly reminder, guys - it is helpful if the 'Subject' heading bears some relationship to the content. I know, we get into an = interesting discussion and don't even look at the subject line. Of course I would = NEVER do such a thing:-). =20 Al =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of George Lendich Sent: Tuesday, July 07, 2009 2:36 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: INJECTION OIL IN FUEL =20 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 =20 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) =20 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 =20 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 =20 _____ =20 A Good Credit Score is 700 or Above. See yours in just 2 easy steps!=20 ------=_NextPart_000_0010_01C9FF28.EAE4AEC0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Just a friendly reminder, guys = – it is helpful if the ‘Subject’ heading bears some = relationship to the content.  I know, we get into an interesting discussion and = don’t even look at the subject line.  Of course I would NEVER do such a = thingJ.=

 

Al

 

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of George Lendich
Sent: Tuesday, July 07, = 2009 2:36 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = INJECTION OIL IN FUEL

 

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 = -----

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 <lendich@aanet.com.au>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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 

=

----- Original Message = -----

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

 

A Good Credit Score is 700 or Above. See yours in just 2 easy steps!

------=_NextPart_000_0010_01C9FF28.EAE4AEC0--