X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA09.emeryville.ca.mail.comcast.net ([76.96.30.96] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2724164 for flyrotary@lancaironline.net; Mon, 11 Feb 2008 01:50:48 -0500 Received-SPF: none receiver=logan.com; client-ip=76.96.30.96; envelope-from=gregw@onestopdesign.biz Received: from OMTA08.emeryville.ca.mail.comcast.net ([76.96.30.12]) by QMTA09.emeryville.ca.mail.comcast.net with comcast id o2bz1Y0010FhH24A90LQ00; Mon, 11 Feb 2008 06:49:43 +0000 Received: from gregoryii ([24.6.40.29]) by OMTA08.emeryville.ca.mail.comcast.net with comcast id o6q91Y0090dkeQQ8U00000; Mon, 11 Feb 2008 06:50:10 +0000 X-Authority-Analysis: v=1.0 c=1 a=7g1VtSJxAAAA:8 a=Ia-xEzejAAAA:8 a=XIj0t2w7DhMiPjlsIGEA:9 a=tF-jvLMZC7q9hG2HFXUA:7 a=dBzPvSkpVZMqXyKEqDiG2nfmygEA:4 a=4vB-4DCPJfMA:10 a=c5zHXd76wwQA:10 a=EgQ6kEFN_OHpIDb5N44A:9 a=KGAMmuaTnIyhZwYrWz4A:7 a=FTi6neTlz3l64k5jza14iEiTNbUA:4 a=EzXvWhQp4_cA:10 a=eJojReuL3h0A:10 a=djSSOgbfo6cA:10 a=WD2S8eiFAUIA:10 a=AfD3MYMu9mQA:10 Message-ID: <008d01c86c7a$65f760a0$8801a8c0@yosemite.onestopdesign.biz> From: "Greg Ward" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Fuel burn Date: Sun, 10 Feb 2008 22:50:32 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_008A_01C86C37.57834180" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_008A_01C86C37.57834180 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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 -----=20 From: Greg Ward=20 To: Rotary motors in aircraft=20 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 -----=20 From: Charlie England=20 To: Rotary motors in aircraft=20 Sent: Sunday, February 10, 2008 4:06 PM Subject: [FlyRotary] Re: Fuel burn Hi Mark, Isn't 7000/2.85=3D2456.14 ?? Is the M/T optimized (diameter, pitch, twist) for turning only = 2150rpm? Charlie Mark Steitle wrote:=20 Al,=20 Yes, I'm running one of Tracy's 2.85:1.00 boxes. Mark =20 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'. =20 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 ------=_NextPart_000_008A_01C86C37.57834180 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 

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

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

Hi Mark,

Isn't 7000/2.85=3D2456.14 = ??

Is the=20 M/T optimized (diameter, pitch, twist) for turning only=20 2150rpm?

Charlie


Mark Steitle wrote:=20
Al, =

Yes,=20 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:=20 [FlyRotary] Re: Fuel burn

 

Thanks, good data Al. = I'm sure=20 that some of the differences we're seeing are due to = altitude. =20 So far, I've stayed fairly low (3000-5000').  I may try = some=20 higher altitude flight soon just to see how it changes my = performance=20 numbers.  Another difference is that I have a M/T = electric=20 constant speed prop.  I normally set it to 2150rpm for=20 takeoff.  This allows the engine to turn around 7000 rpm, = which=20 will account some for the higher fuel burn I'm seeing.  = My=20 airport is at 520' msl, so there's a 1000' difference there = from your=20 1500' msl airport.  Yes, she really accelerates down the=20 runway.   I'm usually airborne in about = 900-1000'. =20

Mark

I'm not=20 sure I see how these correlate "set it to = 2150rpm for=20 takeoff.  This allows the engine to turn around 7000 = rpm,"; but the big difference is that you're = putting out=20 more horses than I am.  At 7000 you're likely looking at = about=20 300 hp, so 25-26 gph would be expected.  Are you running = a 2.85=20 ratio redrive; or something = else?

Al

 


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