X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from web81006.mail.mud.yahoo.com ([68.142.199.86] verified) by logan.com (CommuniGate Pro SMTP 5.1c.2) with SMTP id 1232389 for flyrotary@lancaironline.net; Tue, 11 Jul 2006 11:16:25 -0400 Received-SPF: none receiver=logan.com; client-ip=68.142.199.86; envelope-from=deltaflyer@prodigy.net Received: (qmail 88408 invoked by uid 60001); 11 Jul 2006 15:15:36 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=prodigy.net; h=Message-ID:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=jElrE2krSwQdLEx9Uy22Ti4pA0FVjBJ3BgsCFGU+NsdVMekHOLJ0AiZz7RIf38Nip4SzqOv2b1iEHfGA+v6E0xGFb+kFH+qK5HWj7Kzx9dPCNE8Qv2eW7FBFdA0cXW2pIT/JwxADzHj+4XwVPf39LFrTzaEf57iATpIX0wTEJMo= ; Message-ID: <20060711151536.88406.qmail@web81006.mail.mud.yahoo.com> Received: from [199.231.49.128] by web81006.mail.mud.yahoo.com via HTTP; Tue, 11 Jul 2006 08:15:36 PDT Date: Tue, 11 Jul 2006 08:15:36 -0700 (PDT) From: James Maher Subject: Re: [FlyRotary] IVO Magnum adjustment To: Rotary motors in aircraft In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-609034964-1152630936=:80453" Content-Transfer-Encoding: 8bit --0-609034964-1152630936=:80453 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Joe, I'm not actually measuring the pitch, that is why I said about. The IVO Magnum prop that I am using is adjustable between 45" and 105". So when set in the middle it is about 75" (((105-45)/2)+45)=75). Then half way between the middle and full fine(45") is about 60". I don't believe that I have ever tried full throttle operation with the prop at full fine(45"). These are only approximations but close enough for looking at resulting RPM's, and they fairly consistent. When the engine is not running you can tell where the adjustment is just by the sound of the adjustment motor or looking at the cam position. With the engine running I use the my inline current meter (balance meter) to tell me how close to the end of adjustment I am. Jim jewen@comporium.net wrote: Jim, How are you measuring the pitch setting on the IVO? Joe On Tue, July 11, 2006 8:51 am, James Maher wrote: > Kelly, > I have seen 5580 RPM max static with the IVO at about 60" pitch setting. > The static RPM drops down to about 5330 with the prop in the mid range of > 75". > Jim > > > Kelly Troyer wrote: > > > SNIP > > > By the way what max static rpm are you > getting with the "IVO"..........IMHO -- > Kelly Troyer > Dyke Delta/13B/RD1C/EC2 > > > > > > > -------------- Original message from James Maher > : -------------- > > SNIP --0-609034964-1152630936=:80453 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: 8bit

Joe,

I'm not actually measuring the pitch, that is why I said about.

The IVO Magnum prop that I am using is adjustable between 45" and 105".

So when set in the middle it is about 75" (((105-45)/2)+45)=75).

Then half way between the middle and full fine(45") is about 60".

I don't believe that I have ever tried full throttle operation with the prop at full fine(45").

These are only approximations but close enough for looking at resulting RPM's, and they fairly consistent.

When the engine is not running you can tell where the adjustment is just by the sound of the adjustment motor or looking at the cam position.

With the engine running I use the my inline current meter (balance meter) to tell me how close to the end of adjustment I am.

Jim

jewen@comporium.net wrote:

Jim,
How are you measuring the pitch setting on the IVO?

Joe

On Tue, July 11, 2006 8:51 am, James Maher wrote:
> Kelly,
> I have seen 5580 RPM max static with the IVO at about 60" pitch setting.
> The static RPM drops down to about 5330 with the prop in the mid range of
> 75".
> Jim
>
>
> Kelly Troyer wrote:
>
>
> SNIP
>
>
> By the way what max static rpm are you
> getting with the "IVO"..........IMHO --
> Kelly Troyer
> Dyke Delta/13B/RD1C/EC2
>
>
>
>
>
>
> -------------- Original message from James Maher
> : --------------
>
>
SNIP

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