X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from pop-a065d19.pas.sa.earthlink.net ([207.217.121.253] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 933606 for flyrotary@lancaironline.net; Thu, 05 May 2005 13:08:05 -0400 Received-SPF: pass receiver=logan.com; client-ip=207.217.121.253; envelope-from=mldsub@earthlink.net Received: from fl-204-215-42-200.dyn.sprint-hsd.net ([204.215.42.200] helo=philadelsc5rol) by pop-a065d19.pas.sa.earthlink.net with esmtp (Exim 3.36 #10) id 1DTjon-0007El-00 for flyrotary@lancaironline.net; Thu, 05 May 2005 10:07:21 -0700 From: "Sanderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: CVT (continuously variable transmission) Date: Thu, 5 May 2005 13:07:24 -0400 Message-ID: <003e01c55194$e937b900$6401a8c0@philadelsc5rol> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003F_01C55173.62261900" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_003F_01C55173.62261900 Content-Type: text/plain; charset="windows-1250" Content-Transfer-Encoding: quoted-printable Hi Bill, At one point they did try the variable width pulley and belt arrangement to connect the engine to the driveshaft. I thought it was a very ingenious design that just didn't work out for a number of reasons. =20 You are right about the harmonic vibration problems. Wll worth reading. Thanks -- Sandy =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of WRJJRS@aol.com Sent: Thursday, May 05, 2005 12:33 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: CVT (continuously variable transmission) In a message dated 5/5/2005 9:15:46 AM Pacific Standard Time, = WRJJRS@aol.com writes: Jim Bede tried it on the original BD-5. =20 The BD-5 didn't have a CVT. It did have an offset drive that redefined harmonic vibration problems though. Google BD-5 and Harmonic vibration = and you wiill get a paper on vibration about the driveshaft problems they = were having. VERY interesting reading. Bill Jepson Possible correction, in the article they said that they considered the snowmobile trans but it was way too heavy and didn't use it. Bill Jepson --=20 No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.11.5 - Release Date: 5/4/2005 =20 ------=_NextPart_000_003F_01C55173.62261900 Content-Type: text/html; charset="windows-1250" Content-Transfer-Encoding: quoted-printable Message
Hi=20 Bill,
At one point = they did=20 try the variable width pulley and belt arrangement
to connect = the engine to=20 the driveshaft.  I thought it was a very
ingenious = design that=20 just didn't work out for a number of reasons.
 
You are = right about the=20 harmonic vibration problems.  Wll worth = reading.
Thanks --=20 Sandy
 
-----Original Message-----
From: Rotary motors = in=20 aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of=20 WRJJRS@aol.com
Sent: Thursday, May 05, 2005 12:33=20 PM
To: Rotary motors in aircraft
Subject: = [FlyRotary] Re:=20 CVT (continuously variable transmission)

In a message dated 5/5/2005 9:15:46 AM Pacific Standard Time,=20 WRJJRS@aol.com writes:
Jim=20 Bede tried it on the original BD-5.
 
=
The BD-5 didn't have a CVT. It did have an offset drive that = redefined=20 harmonic vibration problems though. Google BD-5 and Harmonic = vibration and=20 you wiill get a paper on vibration about the driveshaft problems = they were=20 having. VERY interesting reading.
Bill Jepson
Possible correction, in the article they said that they = considered the=20 snowmobile trans but it was way too heavy and didn't use it.
Bill Jepson

--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.11.5 - Release Date: 5/4/2005

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