Return-Path: Received: from rwcrmhc11.comcast.net ([204.127.198.35] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 608475 for flyrotary@lancaironline.net; Sat, 15 Jan 2005 16:49:59 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.198.35; envelope-from=bhcishere@comcast.net Received: from theboss (c-24-126-219-69.we.client2.attbi.com[24.126.219.69]) by comcast.net (rwcrmhc11) with SMTP id <20050115214929013009cf23e>; Sat, 15 Jan 2005 21:49:29 +0000 Message-ID: <06db01c4fb4c$3899b420$45db7e18@madhouse.home> From: "Bryan" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: IVO Prop Date: Sat, 15 Jan 2005 13:50:25 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_06D8_01C4FB09.2A59EB70" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1478 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1478 This is a multi-part message in MIME format. ------=_NextPart_000_06D8_01C4FB09.2A59EB70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message The major problem with the IVO and Lyc engine combo is the heavy power = pulses. It uses separate blades clamped between plates and the heavy = low frequency pulses WILL cause the blades to become loose. (IVO will = no longer sell for installation on any four cylinder aircraft engine) Use of the IVO with the rotary should not pose a problem as the power = pulses overlap and at a much higher frequency. Tracy used an IVO and as far as I know, the only reason he stopped = using it was due to the performance. According to Tracy the IVO climbs = like mad but does not perform well over 150 mph. Bryan 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 Joe, don't know how the IVO prop is with the rotary engine, but it = definitely is not recommended for a Velocity (or any pusher) with a Lyc. = engine. I suspect that the wing turbulence is too much for the IVO = prop. A Velocity crashed and lost the whole family a while back using = the IVO prop if I correctly remember. My 2 cents. Wendell --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.832 / Virus Database: 566 - Release Date: 1/13/2005 ------=_NextPart_000_06D8_01C4FB09.2A59EB70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message=
 
The major problem with the IVO and Lyc = engine=20 combo is the heavy power pulses.  It uses separate blades clamped = between=20 plates and the heavy low frequency pulses WILL cause the blades to = become=20 loose.  (IVO will no longer sell for installation on any four = cylinder=20 aircraft engine)
 
Use of the IVO with the rotary should = not pose a=20 problem as the power pulses overlap and at a much higher = frequency.
 
Tracy used an IVO and as far as I = know, the only=20 reason he stopped using it was due to the performance.  According = to=20 Tracy the IVO climbs like mad but does not perform well over 150 = mph.
 
Bryan
Does anyone have any experience or = opinions=20 using an IVO Magnum Inflight Adjustable prop with a rotary?  I = am=20 considering the IVO for use with my Velocity / Renesis and would = appreciate=20 any coments.
 
Thanks,
Joe
 
Joe, don't know how = the IVO prop=20 is with the rotary engine, but it definitely is not recommended for = a=20 Velocity (or any pusher) with a Lyc. engine.  I suspect that = the wing=20 turbulence is too much for the IVO prop. A Velocity = crashed and=20 lost the whole family a while back using the IVO prop if I correctly = remember.  My 2 cents.
Wendell
 

---
Outgoing = mail is=20 certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: = 6.0.832 / Virus Database: 566 - Release Date:=20 1/13/2005
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