Return-Path: Received: from mail.tsisp.com ([65.23.108.44] verified) by logan.com (CommuniGate Pro SMTP 4.2b1) with ESMTP-TLS id 3150929 for flyrotary@lancaironline.net; Wed, 07 Apr 2004 12:15:19 -0400 Received: from stevehome ([]) by mail.tsisp.com (Technical Support Inc.) with SMTP id BGA74184 for ; Wed, 07 Apr 2004 12:15:19 -0400 Reply-To: From: "Steve Brooks" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Help Rusty pick a prop Date: Wed, 7 Apr 2004 12:16:24 -0400 Message-ID: <000e01c41cbb$ac6ec860$6400a8c0@WORKGROUP.local> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01C41C9A.255D2860" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C41C9A.255D2860 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit MessageRusty, I agree that with the pusher, the air is blocked from the center portion of the prop, so the IVO really doesn't hinder top end speed. It may on the RV. The IVO Magnum comes with 2 different ranges on the pitch. I have the high pitch blades which is what they recommend for my plane. I believe that the pitch range goes from something like 40-45" on the low end, up to something like 105" on the high end of the pitch range. Steve -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy Sent: Wednesday, April 07, 2004 10:19 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Help Rusty pick a prop I started with the ground adjustable, but plan to add the in-flight adjustable after getting some time in the plane, and making sure that I don't have any issues with the prop. I think that the blade crack problem they had in the past were all with Lycomings, and due to the strong pulses. I shouldn't have these issues with the rotary. Hi Steve, Thanks for the comments. As I mentioned, I'm not afraid to run an IVO, as I agree that the cracking will have no effect on us. The biggest hang-up I had with the IVO was this mysterious high speed problem that many people have. Tracy said his climbed like crazy, but seemed to have a bunch of drag at higher speeds. Dave Atkins reshaped the hub area some, but I could never get a description of what he did. Pushers seemed to be less affected, perhaps because the fuselage blocks more of the drag area of the hub??? I'll call IVO today, and see what they would recommend. Cheers, Rusty (2 or 3 blade, long or short, just don't know) ------=_NextPart_000_000F_01C41C9A.255D2860 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Rusty,
I=20 agree that with the pusher, the air is blocked from the center portion = of the=20 prop, so the IVO really doesn't hinder top end speed. It may on the RV.=20  
 
The=20 IVO Magnum comes with 2 different ranges on the pitch.  I have the = high=20 pitch blades which is what they recommend for my plane.  I = believe=20 that the pitch range goes from something like 40-45" on the low end, up = to=20 something like 105" on the high end of the pitch = range.
 
Steve
-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of Russell=20 Duffy
Sent: Wednesday, April 07, 2004 10:19 AM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: Help Rusty pick = a=20 prop

I started with the ground = adjustable, but=20 plan to add the in-flight adjustable after getting some time in the = plane, and=20 making sure that I don't have any issues with the prop.  I think = that the=20 blade crack problem they had in the past were all with Lycomings, and = due to=20 the strong pulses.  I shouldn't have these issues with the=20 rotary. 
 
 
Hi Steve,  
 
Thanks = for the=20 comments. As I mentioned, I'm not afraid to run an IVO, as I agree = that the=20 cracking will have no effect on us.  The biggest hang-up I had = with the=20 IVO was this mysterious high speed problem that many people = have.  Tracy=20 said his climbed like crazy, but seemed to have a bunch of drag at = higher=20 speeds.  Dave Atkins reshaped the hub area some, but I could = never get a=20 description of what he did.  Pushers seemed to be less affected, = perhaps=20 because the fuselage blocks more of the drag area of the hub???  = I'll=20 call IVO today, and see what they would recommend. =20
 
Cheers,
Rusty (2 or = 3 blade, long=20 or short, just don't=20 know)
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