X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Received: from an-out-0708.google.com ([209.85.132.249] verified) by logan.com (CommuniGate Pro SMTP 5.1.3) with ESMTP id 1686444 for flyrotary@lancaironline.net; Mon, 18 Dec 2006 08:12:16 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.132.249; envelope-from=cozy4pilot@gmail.com Received: by an-out-0708.google.com with SMTP id c34so352907anc for ; Mon, 18 Dec 2006 05:11:27 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:from:to:subject:date:message-id:mime-version:content-type:x-priority:x-msmail-priority:x-mailer:in-reply-to:x-mimeole:importance; b=X5pusx/dESf6EsoVf0agk+ESBzmC4a8Hrtajw7+3nw77HdZ22p5ECHSMN5d+NodGJsVD8JYdI8YPiBJh+rWf10LXZ4stTVDkqDK3mGcqmSXXGsW6EEt9aNH5UPNPrrKPcrJNLb0K+cPux5eFBzxzb/xakwFvCDzLl3/fbi3LAMY= Received: by 10.100.5.17 with SMTP id 17mr3071928ane.1166447487601; Mon, 18 Dec 2006 05:11:27 -0800 (PST) Return-Path: Received: from stevehome ( [76.0.154.141]) by mx.google.com with ESMTP id i39sm10329601wxd.2006.12.18.05.11.24; Mon, 18 Dec 2006 05:11:26 -0800 (PST) From: "Steve Brooks" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: Ivo Magnum Date: Mon, 18 Dec 2006 08:12:20 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_008F_01C7227C.3D5BBD60" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1807 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_008F_01C7227C.3D5BBD60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Barry, It’s the same prop, just without the motor drive. I can add the motor to my prop to make it in flight adjustable. Unless they changed it, the price of the ground adjustable, adding the motor unit later, was the same as buying it all up front. Steve Brooks -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Barry Gardner Sent: Sunday, December 17, 2006 9:04 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Ivo Magnum Steve, Buly, Can I ask a question about the IVO props? I understand that the variable pitch just twists the end of the prop but does the ground adjustable twist the whole blade? Or does it adjust the same way, just without the motor? Barry Gardner Wheaton, IL ----- Original Message ----- From: Stephen Brooks To: Rotary motors in aircraft Sent: Sunday, December 17, 2006 7:44 AM Subject: [FlyRotary] Re: Ivo Magnum Buly, I'm also running the IVO, but ground adjustable. I had enough weight back there without adding to it, especially that far aft. Doesn't rule out adding it later though. On our pushers, the center of the prop isn't getting much (if any) air anyways, so I'm not sure what the drag effect of the rather flat center section of the prop will be on the Cozy. I can definitely see where it would add a lot of drag on a typical puller configuration. Steve Brooks On 12/14/06, Bulent Aliev < atlasyts@bellsouth.net > wrote: I flew my CZ-IV at medium pitch (Ivo Magnum electric 2 blade 68"diam.) and was cruising at 160 MPH with little effort. There is waay more pitch to go. The range is 40-105" of pitch. The problem with Ivo as I understand it, there is not enough pitch in the root of the blades, and the faster you go the the ineffective area of the blade spreads out from the center, since Ivo twists the blades starting from the tip. So, the root does not see too much change. That's only my uneducated opinion. Buly On Dec 14, 2006, at 5:32 PM, david mccandless wrote: > Tracey/Bob/Anyone > What was the problem over 150 mph? What are you using now? > Ref the IVO prop, can you give an opinion on reliability, operation > and any problems or worries. I would like to fit one to my Europa > for speed range 70 to 180 mph, probably on a 13b, if the RB > Aluminum Hsgs work out. > BR, Dave McC > On 14, Dec , at 10:17 PM, Tracy Crook wrote: > >> I flew the Ivo Magnum (high pitch version) for awhile on my -4 >> (ground adjustable only) and tested it at near max pitch >> (~100"). Takeoff & climb was OK even though static & climb RPM >> was limited to only ~4000 rpm. Flight performance will vary >> greatly based on the aircraft & power to weight ratio. The -4 is >> an overpowered hot rod compared to factory planes. The same setup >> on a Cessna 172 might be marginal at best. Over all, the Ivo was >> great below 150 mph. Above that it sucked. Pusher installations >> seem to have better results with it (because it blows? : > ) sorry... >> >> Tracy >>> ----- Original Message ----- >>> From: Bob Tilley >>> To: Rotary motors in aircraft >>> Sent: Wednesday, December 13, 2006 9:51 PM >>> Subject: [FlyRotary] Ivo Magnum >>> >>> Folks, >>> >>> I had a question concerning the electrically adjustable Ivo, If I >>> forget to go to fine pitch when landing, what kind of performance >>> can >>> I expect if I need to do a go around? Just being cautious and >>> wanting >>> to know beforehand. Is there anyone willing to own up to having done >>> it already? I'm going to be running a 180 hp 13b in a Cozy MK IV. >>> >>> Bob >>> >>> -- >>> Homepage: http://www.flyrotary.com/ >>> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ ------=_NextPart_000_008F_01C7227C.3D5BBD60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ba= rry,

It= ’s the same prop, just without the motor drive.  I can add the motor to my prop to make it in flight = adjustable.  Unless they changed it, the = price of the ground adjustable, adding the motor unit later, was the same as = buying it all up front.

 

St= eve Brooks

 

-----Original Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Barry Gardner
Sent: Sunday, December = 17, 2006 9:04 AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = Ivo Magnum

 

Steve, Buly,

 <= /p>

Can I ask a question about the IVO props? I understand that the variable pitch = just twists the end of the prop but does the ground adjustable twist the = whole blade? Or does it adjust the same way, just without the = motor?<= /p>

 <= /p>

Barry Gardner

Wheaton, IL<= /p>

----- Original Message -----

=

To: Rotary motors in aircraft

Sent: Sunday, = December 17, 2006 7:44 AM

Subject: [FlyRotary] Re: Ivo Magnum

 <= /p>

Buly,
I'm also running the IVO, but ground adjustable.  I had enough = weight back there without adding to it, especially that far aft.  Doesn't rule = out adding it later though.

On our pushers, the center of the prop isn't getting much (if any) air = anyways, so I'm not sure what the drag effect of the rather flat center section = of the prop will be on the Cozy.

I can definitely see where it would add a lot of drag on a typical = puller configuration.

Steve Brooks

On 12/14/06, Bulent = Aliev < atlasyts@bellsouth.net> wrote: <= /p>

I flew my CZ-IV at medium pitch (Ivo Magnum electric 2 = blade
68"diam.) and was cruising at 160 MPH with little effort. There = is
waay more pitch to go. The range is 40-105" of pitch. The = problem
with Ivo as I understand it, there is not enough pitch in the root of =
the blades, and the faster you go the the ineffective area of the
blade spreads out from the center, since Ivo twists the blades
starting from the tip. So, the root does not see too much change.
That's only my uneducated opinion.
Buly

On Dec 14, 2006, at 5:32 PM, david mccandless wrote:

> Tracey/Bob/Anyone
>  What was the problem over 150 mph? What are you using = now?
> Ref the IVO prop, can you give an opinion on reliability, operation =
> and any problems or worries. I would like to fit one to my = Europa
> for speed range 70 to 180 mph, probably on a 13b, if the RB
> Aluminum Hsgs work out.
> BR, Dave McC
> On 14, Dec , at 10:17 PM, Tracy Crook wrote:
>
>> I flew the Ivo Magnum (high pitch version) for awhile on my = -4
>> (ground adjustable only) and tested it at near max pitch
>> (~100").    Takeoff & climb was OK = even though static & climb RPM
>> was limited to only ~4000 rpm.   Flight performance = will vary
>> greatly based on the aircraft & power to weight ratio.  The -4 is
>> an overpowered hot rod compared to factory = planes.  The same setup
>> on a Cessna 172 might be marginal at best.  Over all, = the Ivo was
>> great below 150 mph.  Above that it sucked.  Pusher installations
>> seem to have better results with it (because it blows? : > ) sorry...
>>
>> Tracy
>>> ----- Original Message -----
>>> From: Bob Tilley
>>> To: Rotary motors in aircraft
>>> Sent: Wednesday, December 13, 2006 9:51 PM
>>> Subject: [FlyRotary] Ivo Magnum
>>>
>>> Folks,
>>>
>>> I had a question concerning the electrically adjustable = Ivo, If I
>>> forget to go to fine pitch when landing, what kind of = performance
>>> can
>>> I expect if I need to do a go around? Just being cautious = and
>>> wanting
>>> to know beforehand. Is there anyone willing to own up to = having done
>>> it already? I'm going to be running a 180 hp 13b in a Cozy = MK IV.
>>>
>>> Bob
>>>
>>> --
>>> Homepage:  http://www.flyrotary.com/
>>> Archive and UnSub:   http://mail.lanca= ironline.net/lists/flyrotary/


--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lanca= ironline.net/lists/flyrotary/<= /p>

 <= /p>

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