Return-Path: Received: from [65.54.169.155] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.2b3) with ESMTP id 3220694 for flyrotary@lancaironline.net; Fri, 07 May 2004 17:59:59 -0400 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 7 May 2004 14:59:59 -0700 Received: from 4.174.5.135 by bay3-dav125.adinternal.hotmail.com with DAV; Fri, 07 May 2004 21:59:58 +0000 X-Originating-IP: [4.174.5.135] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] fuel injector prices Date: Fri, 7 May 2004 17:59:58 -0400 MIME-Version: 1.0 X-Mailer: MSN Explorer 7.02.0011.2700 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0014_01C4345D.1C1BBFC0" Message-ID: X-OriginalArrivalTime: 07 May 2004 21:59:59.0139 (UTC) FILETIME=[A3C5CF30:01C4347E] ------=_NextPart_001_0014_01C4345D.1C1BBFC0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable ----- Original Message ----- From: kenpowell@comcast.net Sent: Thursday, May 06, 2004 10:08 PM To: Rotary motors in aircraft Subject: [FlyRotary] fuel injector prices Judging from the predominance of big injectors and high fuel pressure amo= ng this group, it sounds as if you guys have all been indoctrinated by Pa= ul Lamar (Bigger & More is Better!) It just ain't so! Remember, we are = not pushing the limits of what the engine is capable of, and that's just = the way it should be. Tracy Some folks say bigger is better; others say size doesn=E2=80=99t matter =E2= =80=93 but the reason we use the 550 cc/min injectors is because they com= e with the engine, and replacements are very spendy. Al -------------------------------------------------------------------- Take a look in the Mustang magazines: 38 and 42 lb injectors sell for be= tween $295 and $395 for a set of eight. So call it $200 for a set of 4 i= f you split the costs with someone else. Brands vary, but are usually Bo= sch. I'm going to start with 38 lb injectors at 38 PSI - should be good = for about 230 HP at 80% duty cycle and 0.5 BSFC. Would also be good for = ~245 HP at 44 psi. Note that if NA these will not be working very hard a= t cruise altitudes. If turbo I would probably go with the 42's just to k= eep the duty cycle a little lower. Ken P. Good call Ken. Had one builder use the 38 lb/hr injectors (NA engine) an= d had very nice idle & easy adjustment. I may use these on the manifold = I'm designing now since I can design around any package style. Do you kn= ow if these are the same physical pkg as the Nippondensos used on Rotarie= s? =20 Tracy ------=_NextPart_001_0014_01C4345D.1C1BBFC0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
 
<= DIV> 
=
----- Original Message -----
From: kenpowell@comcast.net
Sent: Thursday, May 06, 2004 10:08 PM
<= B>To: Rotary motors in aircraft
Subject: [FlyRotary] fuel injector prices
 
=



Judging from the predominance of big injectors and high fuel = pressure among this group, it sounds as if you guys have all been indoctr= inated by Paul Lamar (Bigger & More is Better!)  It just ain't s= o!  Remember, we are not pushing the limits of what the engine is ca= pable of, and that's just the way it should be.



Tracy
<= BR>

Some folks say bigger is better; others say size doesn=E2=80=99= t matter =E2=80=93 but the reason we use the 550 cc/min injectors is beca= use they come with the engine, and replacements are very spendy.

<= BR>
Al

--------------------------------------------------------= ------------
Take a look in the Mustang magazines:  38 and 42 lb = injectors sell for between $295 and $395 for a set of eight.  So cal= l it $200 for a set of 4 if you split the costs with someone else.  = Brands vary, but are usually Bosch.  I'm going to start with 38 lb i= njectors at 38 PSI - should be good for about 230 HP at 80% duty cycle an= d 0.5 BSFC.  Would also be good for ~245 HP at 44 psi.  Note th= at if NA these will not be working very hard at cruise altitudes.  I= f turbo I would probably go with the 42's just to keep the duty cycle a l= ittle lower.

Ken P.

Good call Ken.  Had one builde= r use the 38 lb/hr injectors (NA engine) and had very nice idle & eas= y adjustment.  I may use these on the manifold I'm designing now sin= ce I can design around any package style.  Do you know if these are = the same physical pkg as the Nippondensos used on Rotaries? 

Tracy

------=_NextPart_001_0014_01C4345D.1C1BBFC0--