Return-Path: Received: from fed1rmmtao02.cox.net ([68.230.241.37] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 609036 for flyrotary@lancaironline.net; Sun, 16 Jan 2005 12:08:51 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.37; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao02.cox.net (InterMail vM.6.01.04.00 201-2131-117-20041022) with ESMTP id <20050116170821.LFIZ17983.fed1rmmtao02.cox.net@BigAl> for ; Sun, 16 Jan 2005 12:08:21 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] IVO Prop Date: Sun, 16 Jan 2005 09:08:29 -0800 Message-ID: <000001c4fbee$002bb870$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C4FBAA.F20D3360" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C4FBAA.F20D3360 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Joe; =20 There have been a number of Velocitys flying with IVO, and the consensus = I have heard is pretty much the same as with other aircraft. Very good takeoff roll, climbs great, limited top end. The higher pitch versions = are better, but the fundamental issue remains; twisting of the blade with a fixed root results in optimum pitch distribution along the Blade at only = one setting. If you are looking at power less than 200hp on the Velocity it = may be just fine. =20 Chuck Harbert had one on his Velocity with 20B and thought it was great, = but he never really got into a flight test program before abandoning the = engine after a couple of fires. He has offered it to me to compare to my Catto once I get flying. I'll decide later whether to try it or not.=20 =20 My first looks at the prop years ago left me with questions about the quality, but that is just a judgment factor that I have no experience to back up, and things have likely improved since. Looking at the blades it seemed to me that some improvement in performance could be obtained by = some reshaping of the leading edge. Dave Atkins came to the same conclusion, = did some reshaping and verified better performance in flight tests. =20 Al =20 =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Joe Sent: Saturday, January 15, 2005 7:57 AM To: Rotary motors in aircraft Subject: [FlyRotary] IVO Prop =20 Does anyone have any experience or opinions using an IVO Magnum Inflight Adjustable prop with a rotary? I am considering the IVO for use with my Velocity / Renesis and would appreciate any coments. =20 Thanks, Joe ------=_NextPart_000_0001_01C4FBAA.F20D3360 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Joe;

 

There have been a number of = Velocitys flying with IVO, and the consensus I have heard is pretty much the same = as with other aircraft.  Very good takeoff roll, climbs great, limited top end.  The higher pitch versions are better, but the fundamental = issue remains; twisting of the blade with a fixed root results in optimum = pitch distribution along the Blade at only one setting. If you are looking at = power less than 200hp on the Velocity it may be just fine.

 

Chuck Harbert had one on his Velocity with 20B and thought it was great, = but he never really got into a flight test program before abandoning the engine = after a couple of fires.  He has offered it to me to compare to my Catto = once I get flying.  I’ll decide later whether to try it or not. =

 

My first looks at the prop years = ago left me with questions about the quality, but that is just a judgment = factor that I have no experience to back up, and things have likely improved = since. Looking at the blades it seemed to me that some improvement in performance could = be obtained by some reshaping of the leading edge.  Dave Atkins came = to the same conclusion, did some reshaping and verified better performance in = flight tests.

 

Al

 

 

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Joe
Sent: Saturday, January 15, 2005 7:57 = AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] IVO = Prop

 

Does anyone have any = experience or opinions using an IVO Magnum Inflight Adjustable prop with a = rotary?  I am considering the IVO for use with my Velocity / Renesis and would = appreciate any coments.

 

Thanks,

Joe

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