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Message-ID: <5cf132c0809081231t39dec268ofda7e00f4671579c@mail.gmail.com>
Date: Mon, 8 Sep 2008 14:31:31 -0500
From: "Mark Steitle" <msteitle@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: 20B Update from Mark?
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Doug,
I went with a 76" C/S M/T electric.  I just happened to get in on a group
buy and got a pretty good discount... still not cheap, but less than I had
budgeted for.  TAS reported is calculated by the EM-2 and is in kts.  I've
seen 210 once in a descent (239 mph), but I try to stay below 200 kts
(230mph).  I'll get some better numbers once I make some longer x-country
flights at altitude.  The published cruise numbers, if they can be believed,
are 192-200 mph with an IO-360 Continental, and 220-225 mph with an IO-550
Continental.  WOT, in level flight, I have seen 185 kts (212 mph) TAS which
in between the IO-360 numbers and the IO-550 numbers.  She burns a lot more
fuel at that MAP, so I usually throttle back to about 22", 10-12 gph.

Mark

On Mon, Sep 8, 2008 at 1:26 PM, <DLOMHEIM@aol.com> wrote:

>   Mark wrote:
>
> *The real "jewel" has been the c/s prop.  This allows me to cruise at
> around 10.6 gph at 4200-4500 rpm, 153 TAS.  Until recently, I had been
> cruising at 5200 rpm, burning 14-15 gph.  Speeds are about the same.  Keep
> in mind that I normally fly at 3500-5500 msl.  I anticipate lower fuel burn
> at higher altitudes.  I'm planning a trip to Galveston in October and I can
> try out this theory then.*
>
>
> So which CS prop did you end up installing?  An IVO by chance?  Also, is
> you TAS in Kts or mph?
>
> Thanks for the great update!
>
> dl
>
>
>
>  ------------------------------
> Psssst...Have you heard the news? There's a new fashion blog, plus the
> latest fall trends and hair styles at StyleList.com<http://www.stylelist.com/trends?ncid=aolsty00050000000014>
> .
>

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<div dir="ltr"><div>Doug, </div>
<div>I went with&nbsp;a 76&quot; C/S&nbsp;M/T electric.&nbsp; I&nbsp;just happened to&nbsp;get in on a group buy and got a pretty good discount... still not cheap, but less than I had budgeted for.&nbsp;&nbsp;TAS reported is&nbsp;calculated by the EM-2 and&nbsp;is in kts.&nbsp; I&#39;ve seen 210 once in a descent (239 mph), but I try to stay below 200 kts (230mph).&nbsp; I&#39;ll get some better numbers once I make some longer&nbsp;x-country flights at altitude.&nbsp; The published&nbsp;cruise numbers, if they can be believed, are&nbsp;192-200 mph with an IO-360 Continental, and 220-225 mph&nbsp;with an IO-550 Continental.&nbsp; WOT, in&nbsp;level flight,&nbsp;I have seen 185 kts (212 mph)&nbsp;TAS which in between the IO-360 numbers and the IO-550 numbers.&nbsp;&nbsp;She burns a lot more fuel at that&nbsp;MAP, so I usually throttle back to about 22&quot;, 10-12 gph.&nbsp; </div>

<div>&nbsp;</div>
<div>Mark<br><br></div>
<div class="gmail_quote">On Mon, Sep 8, 2008 at 1:26 PM, <span dir="ltr">&lt;<a href="mailto:DLOMHEIM@aol.com">DLOMHEIM@aol.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: Arial"><font face="Arial" color="#000000" size="2">
<div>
<div class="Ih2E3d">
<div>Mark wrote:</div>
<div>&nbsp;</div>
<div><em>The real &quot;jewel&quot; has been the c/s prop.&nbsp; This allows me to cruise at around 10.6 gph at 4200-4500 rpm, 153 TAS.&nbsp; Until recently, I had been cruising at 5200 rpm, burning 14-15 gph.&nbsp; Speeds are about the same.&nbsp; Keep in mind that I normally fly at 3500-5500 msl.&nbsp; I anticipate&nbsp;lower fuel burn at higher altitudes.&nbsp; I&#39;m planning a trip to Galveston in October and I can try out this theory then.</em></div>

<div>&nbsp;</div>
<div>&nbsp;</div></div>
<div>So which CS prop did you end up installing?&nbsp; An IVO by chance?&nbsp; Also, is you TAS in Kts or mph?</div>
<div>&nbsp;</div>
<div>Thanks for the great update!</div>
<div>&nbsp;</div>
<div>dl</div></div></font>
<div class="Ih2E3d"><br><br><br>
<div><font style="FONT: 10pt ARIAL, SAN-SERIF; COLOR: black">
<hr style="MARGIN-TOP: 10px">
Psssst...Have you heard the news? <a title="http://www.stylelist.com/trends?ncid=aolsty00050000000014" href="http://www.stylelist.com/trends?ncid=aolsty00050000000014" target="_blank">There&#39;s a new fashion blog, plus the latest fall trends and hair styles at StyleList.com</a>.</font></div>
</div></div></blockquote></div><br></div>

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