X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wf-out-1314.google.com ([209.85.200.169] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2724406 for flyrotary@lancaironline.net; Mon, 11 Feb 2008 06:15:47 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.200.169; envelope-from=msteitle@gmail.com Received: by wf-out-1314.google.com with SMTP id 28so181160wfa.25 for ; Mon, 11 Feb 2008 03:15:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; bh=qQJ24Zgk+TmNMPZM7KkIdki0HtZP4LL0LlMz/Mm2XfI=; b=WjUqmCHGNO86DETegfHvhzSK+TzBtn2UExXYthULGlXJDuwP8GwvI8jvdOss8ph8AOe85mtDdwnvgjDSxGMUAdh9cvP8NzKG/Yp46XBnbiA+Ac2BcPv1p+8Bce3FgskUf0P8+N2DP/lwmzuQfGI7XJqh9MIxX7OsnIYAudrgQtU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=sVl1dbuEIA5JXN8emB6GiHShppwICqvhBJ324OhRvjJl/LNNo4hNaJomA9N2N+1J3mh3nmjU6oT4P2ujP6HzD4dV+w8Y2ZZkWdzD2uYp4SEJJDQcAZlyEEJ7qbOXlhPyVcrvGu/hnhvQF/24bwtACA7BKkz2IGBEjQPE0bbjUqU= Received: by 10.142.83.4 with SMTP id g4mr8395283wfb.28.1202728506908; Mon, 11 Feb 2008 03:15:06 -0800 (PST) Received: by 10.70.20.3 with HTTP; Mon, 11 Feb 2008 03:15:06 -0800 (PST) Message-ID: <5cf132c0802110315g2a61f0a6t573080cef9ffd3c2@mail.gmail.com> Date: Mon, 11 Feb 2008 05:15:06 -0600 From: "Mark Steitle" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Fuel burn In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_20107_1873509.1202728506720" References: ------=_Part_20107_1873509.1202728506720 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Greg, Sounds like you got yourself one gem of an engine there. Have you determined which turbo you're going with? Have you talked with Tracy to see if his box will handle 400 hp continuously. I was under the impression that it was limited to 300 hp for takeoff and 250 in cruise. You're going to have one *very fast* Lancair. Mark S. On Feb 11, 2008 12:50 AM, Greg Ward wrote: > > > > O.K., time to throw a little F matter into the fan. I am sitting in my > new shop, with a Lancair Legacy RG, and a relatively new 20B "D" series on a > palette. I got the engine complete with everything it had in the Cosmo that > it came out of. There isn't even a coat of grease on this thing. Radiator, > oil cooler, air conditioner, condenser, ECU, injectors, coils, motor mounts, > and about 100 pounds of extra stuff came with it. My buddy (he has been > selling engines for 15 years) in LA that sold me this engine ($4500.00) is > in constant contact with people who race this motor, and I am getting a lot > of input on how to set this thing up. I have ordered Tracy's gear drive, > and plan on generating 400 HP on take -off, and about 75-80% at cruise. My > max rpm will be 8000. You have no idea how much input I am getting from the > racing set. They are saying that with a variable boost (electronic) > controller, I can vary the boost at any given altitude, as much or as little > as I want, and tweak this thing for max performance. They can't believe > that I am asking so little from this engine. > > This will get us started; > Greg > > > > > ----- Original Message ----- > > *From:* Greg Ward > *To:* Rotary motors in aircraft > *Sent:* Sunday, February 10, 2008 7:14 PM > *Subject:* [FlyRotary] Re: Fuel burn > > Yeah, I would be interested in this one too, as I am looking at prop > options too. > Greg > (Lancair, on the ground, in the new shop, mating with a 20B as of this > weekend....(:-) > > ----- Original Message ----- > *From:* Charlie England > *To:* Rotary motors in aircraft > *Sent:* Sunday, February 10, 2008 4:06 PM > *Subject:* [FlyRotary] Re: Fuel burn > > Hi Mark, > > Isn't 7000/2.85=2456.14 ?? > > Is the M/T optimized (diameter, pitch, twist) for turning only 2150rpm? > > Charlie > > > Mark Steitle wrote: > > Al, > > Yes, I'm running one of Tracy's 2.85:1.00 boxes. > > Mark > > On Feb 10, 2008 12:20 PM, Al Gietzen wrote: > > > *Subject:* [FlyRotary] Re: Fuel burn > > > > > > > > Thanks, good data Al. I'm sure that some of the differences we're seeing > > are due to altitude. So far, I've stayed fairly low (3000-5000'). I may > > try some higher altitude flight soon just to see how it changes my > > performance numbers. Another difference is that I have a M/T electric > > constant speed prop. I normally set it to 2150rpm for takeoff. This allows > > the engine to turn around 7000 rpm, which will account some for the higher > > fuel burn I'm seeing. My airport is at 520' msl, so there's a 1000' > > difference there from your 1500' msl airport. Yes, she really accelerates > > down the runway. I'm usually airborne in about 900-1000'. > > > > Mark > > > > I'm not sure I see how these correlate "set it to 2150rpm for takeoff. > > This allows the engine to turn around 7000 rpm,"; but the big difference > > is that you're putting out more horses than I am. At 7000 you're likely > > looking at about 300 hp, so 25-26 gph would be expected. Are you running a > > 2.85 ratio redrive; or something else? > > > > Al > > > > > > > > -- > > Homepage: http://www.flyrotary.com/ > > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html > > ------=_Part_20107_1873509.1202728506720 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Greg,
Sounds like you got yourself one gem of an engine there.  Have you determined which turbo you're going with?  Have you talked with Tracy to see if his box will handle 400 hp continuously.  I was under the impression that it was limited to 300 hp for takeoff and 250 in cruise.  You're going to have one very fast Lancair. 

Mark S.

On Feb 11, 2008 12:50 AM, Greg Ward <gregw@onestopdesign.biz> wrote:
 

O.K., time to throw a little F matter into the fan.  I am sitting in my new shop, with a Lancair Legacy RG, and a relatively new 20B "D" series on a palette.  I got the engine complete with everything it had in the Cosmo that it came out of.  There isn't even a coat of grease on this thing.  Radiator, oil cooler, air conditioner, condenser, ECU, injectors, coils, motor mounts, and about 100 pounds of extra stuff came with it.  My buddy (he has been selling engines for 15 years) in LA that sold me this engine ($4500.00) is in constant contact with people who race this motor, and I am getting a lot of input on how to set this thing up.  I have ordered Tracy's gear drive, and plan on generating 400 HP on take -off, and about 75-80% at cruise.  My max rpm will be 8000.  You have no idea how much input I am getting from the racing set.  They are saying that with a variable boost (electronic) controller, I can vary the boost at any given altitude, as much or as little as I want, and tweak this thing for max performance.  They can't believe that I am asking so little from this engine.
 
This will get us started;
Greg
 
 
 
 
----- Original Message -----
From: Greg Ward
Sent: Sunday, February 10, 2008 7:14 PM
Subject: [FlyRotary] Re: Fuel burn

Yeah, I would be interested in this one too, as I am looking at prop options too.
Greg
(Lancair, on the ground, in the new shop, mating with a 20B as of this weekend....(:-)
----- Original Message -----
Sent: Sunday, February 10, 2008 4:06 PM
Subject: [FlyRotary] Re: Fuel burn

Hi Mark,

Isn't 7000/2.85=2456.14 ??

Is the M/T optimized (diameter, pitch, twist) for turning only 2150rpm?

Charlie


Mark Steitle wrote:
Al,

Yes, I'm running one of Tracy's 2.85:1.00 boxes.

Mark 

On Feb 10, 2008 12:20 PM, Al Gietzen <ALVentures@cox.net> wrote:

Subject: [FlyRotary] Re: Fuel burn

 

Thanks, good data Al. I'm sure that some of the differences we're seeing are due to altitude.  So far, I've stayed fairly low (3000-5000').  I may try some higher altitude flight soon just to see how it changes my performance numbers.  Another difference is that I have a M/T electric constant speed prop.  I normally set it to 2150rpm for takeoff.  This allows the engine to turn around 7000 rpm, which will account some for the higher fuel burn I'm seeing.  My airport is at 520' msl, so there's a 1000' difference there from your 1500' msl airport.  Yes, she really accelerates down the runway.   I'm usually airborne in about 900-1000'. 

Mark

I'm not sure I see how these correlate "set it to 2150rpm for takeoff.  This allows the engine to turn around 7000 rpm,"; but the big difference is that you're putting out more horses than I am.  At 7000 you're likely looking at about 300 hp, so 25-26 gph would be expected.  Are you running a 2.85 ratio redrive; or something else?

Al

 


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