X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 08 Jan 2012 20:50:54 -0500 Message-ID: X-Original-Return-Path: Received: from nm18-vm0.bullet.mail.ac4.yahoo.com ([98.139.53.210] verified) by logan.com (CommuniGate Pro SMTP 5.4.3) with SMTP id 5340337 for lml@lancaironline.net; Fri, 06 Jan 2012 14:36:44 -0500 Received-SPF: neutral receiver=logan.com; client-ip=98.139.53.210; envelope-from=airmale@windstream.net Received: from [98.139.52.196] by nm18.bullet.mail.ac4.yahoo.com with NNFMP; 06 Jan 2012 19:36:09 -0000 Received: from [98.139.52.129] by tm9.bullet.mail.ac4.yahoo.com with NNFMP; 06 Jan 2012 19:36:09 -0000 Received: from [127.0.0.1] by omp1012.mail.ac4.yahoo.com with NNFMP; 06 Jan 2012 19:36:09 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 223187.43997.bm@omp1012.mail.ac4.yahoo.com Received: (qmail 59032 invoked by uid 60001); 6 Jan 2012 19:36:09 -0000 X-YMail-OSG: KKYrXK0VM1lnEwDsCVSrjMjjRx8F_AOI7D6k7Kbv9fqYKBG oLtrsRJVC6L4AkqILj.wTic04irzDXEdAVG9ITZL8i7V.R8z0j69O13byaRX WrTbIjD8Cdszy7Mn4ZtwpaEMESZltfnAYLdeHkxv9hi_NeiAfFPUhZQGeBOi bEcwnkrxlzUxyIm7Dvr61drFgZhsw8.D0ExaKM1P8NIJLOsAJ3yt32._vNsG Ml7BfLWMVdeeyGCEN7Xp38xz5EuANdOqzU3sl.TlM5NEI9EKC3g16V2bemmg iR4PMB3YlCXDObDHpKSOH1sl.K.SCDzxOpLPoyVCVyx.2KL5CCvA_fRfOGyS FTxFgLnXdu5td0uLa1SQ2QWMQXzSwArimurBn32pfoHWXEi1vSkTRwA0upbw lAorvOEiC0_tbuXZ_UAYndnFC2H0uDNXyeD.iQVYaXAJXzh3Er_ZCwEGR5Xk II002gQatx5N7lM1KLaom7DzAdDrxUFs- Received: from [173.188.54.86] by web65802.mail.ac4.yahoo.com via HTTP; Fri, 06 Jan 2012 11:36:08 PST X-RocketYMMF: airmale4 X-Mailer: YahooMailWebService/0.8.115.331698 References: X-Original-Message-ID: <1325878568.58896.YahooMailNeo@web65802.mail.ac4.yahoo.com> X-Original-Date: Fri, 6 Jan 2012 11:36:08 -0800 (PST) From: J H Webb Reply-To: J H Webb Subject: Re: [LML] Re: Lancair 4P power settings X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-1512247577-2087296700-1325878568=:58896" ---1512247577-2087296700-1325878568=:58896 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable =0A=0AHello Ronald,=0A=0A=A0=A0 I am at a loss figuring out what you are sa= ying in sentence one. Oh I found what you are referring to. Those numbers a= re just indications of that fuel flow at that power but (the big but) if yo= u read the TCM manual carefully you will note that TCM does not recommend l= eaning below 150 deg rich of peak above 65% power. The manual recommends an= y mixture strength at and below 65% power. That number on the 75% number is= just for reference not a recommendation for normal operation.=0A=0AJack We= bb=0ALIV L360=0AFormer Chief engineering Test Pilot=0ABSAE=0A=0A=0A________= ________________________=0A From: Ronald STEVENS =0ATo: lml= @lancaironline.net =0ASent: Friday, January 6, 2012 1:09 PM=0ASubject: [LML= ] Re: Lancair 4P power settings=0A =0A=0AHello Jack=0A=0AI do not want to s= ound like an.......ass lol But on those chart you have a statement that con= tradict with most 'experts' saying that 50% Rich at 75% is precisely the wr= ong spot to be !!=0A=0ASo I would be careful using this chart running your = engine. This might be the 'old' chart they used to have before Gammi and th= e rest came up with better numbers. For example at 50% you can set the mixt= ure anywhere without harming your engine etc etc....=0A=0AI guess TCM just = wants to sell lots of cylinders LOL=0A=0A=3D=3D Ronald (>130h lancair 4p, 1= 400h in others)=0A=0A=0AOn Jan 6, 2012, at 7:44 AM, J H Webb wrote:=0A=0AHe= re is a power chart for the TSIO550 from TCM that I added red lines and cle= aned up a little as it did not scan well.=0A>=0A>=0A>Jack Webb=0A>L360 LIV= =0A>Years as engineering test pilot=0A>=0A>=0A>=0A>=0A>____________________= ____________=0A> From: Jay Phillips =0A>To: lml@lan= caironline.net =0A>Sent: Thursday, January 5, 2012 4:58 PM=0A>Subject: [LML= ] Re: Lancair 4P power settings=0A> =0A>A first order approximation is to c= onsider a linear relation exists between=0A>MP, RPM, and power.=0A>=0A>TCM = says that 38.5" MP and 2700 RPM gives 100% power (350 hp)=0A>=0A>Cruise set= ting of 31" MP and 2500 RPM thus gives (31/38.5) * (2500/2700) =3D=0A>74.5%= or 261 hp=0A>=0A>Another example: 28" MP and 2400 RPM: (28/38.5) * (2400/2= 700) =3D 64.6% or 226=0A>hp=0A>=0A>So you can calculate the power with diff= erent settings, or choose you power=0A>and back-calculate to determine the = settings requried.=0A>=0A>Jay Phillips=0A>Legacy N92SX=0A>IV-P N516DB=0A>= =0A>=0A>-----Original Message-----=0A>From: Lancair Mailing List [mailto:lm= l@lancaironline.net] On Behalf Of Tony=0A>Ketelaars=0A>Sent: Thursday, Janu= ary 05, 2012 12:00 PM=0A>To: lml@lancaironline.net=0A>Subject: [LML] Lancai= r 4P power=0A settings=0A>=0A>Can any one tell me what the MAP/RPM power se= ttings are for the=0A>Lanceair 4P TSIO550=0A>Like 60 - 65 - 70 - 75%=0A>=0A= >Thanks=0A>=0A>Tony Ketelaars=0A>=0A>--=0A>For archives and unsub http://ma= il.lancaironline.net:81/lists/lml/List.html=0A>=0A>=0A>--=0A>For archives a= nd unsub http://mail.lancaironline.net:81/lists/lml/List.html=0A>=0A>=0A>--=0A>For archives and unsub http:/= /mail.lancaironline.net:81/lists/lml/List.html=0A>=0A> ---1512247577-2087296700-1325878568=:58896 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable

Hello Ronald,

   I am at a loss figur= ing out what you are saying in sentence one. Oh I found what you are referr= ing to. Those numbers are just indications of that fuel flow at that power = but (the big but) if you read the TCM manual carefully you will note that T= CM does not recommend leaning below 150 deg rich of peak above 65% power. T= he manual recommends any mixture strength at and below 65% power. That numb= er on the 75% number is just for reference not a recommendation for normal = operation.

Jack Webb
LIV L360
= Former Chief engineering Test Pilot
BSAE
From: Ronald STEVENS <Ronald@sdc.com&g= t;
To: lml@lancaironli= ne.net
Sent: Friday, = January 6, 2012 1:09 PM
Subject:<= /span> [LML] Re: Lancair 4P power settings
=0A
Hello Jack

I do not want to sound= like an.......ass lol But on those chart you have a statement that contrad= ict with most 'experts' saying that 50% Rich at 75% is precisely the wrong = spot to be !!

So I would be careful using this cha= rt running your engine. This might be the 'old' chart they used to have bef= ore Gammi and the rest came up with better numbers. For example at 50% you = can set the mixture anywhere without harming your engine etc etc....
<= div>
I guess TCM just wants to sell lots of cylinders LOL

=3D=3D Ronald (>130h lancair 4p, 1400h in others)<= /div>

On Jan 6, 2012, at 7:44 AM, J H Webb wrote:
Here is a power chart for the TSIO550 from TCM that I added red lines and cleaned up a lit= tle as it did not scan well.

<= span>Jack Webb
L360 LIV
Years= as engineering test pilot

From: Jay Phillips <jayph@fastairplane.net>
To: lml@lancaironline.net
S= ent: Thursday, January 5, 2012 4:58 PM
Subjec= t: [LML] Re: Lancair 4P power settings

= =0AA first order approximation is to consider a linear relation exists betw= een
MP, RPM, and power.

TCM says that 38.5" MP and 2700 RPM gives= 100% power (350 hp)

Cruise setting of 31" MP and 2500 RPM thus give= s (31/38.5) * (2500/2700) =3D
74.5% or 261 hp

Another example: 28= " MP and 2400 RPM: (28/38.5) * (2400/2700) =3D 64.6% or 226
hp

So= you can calculate the power with different settings, or choose you powerand back-calculate to determine the settings requried.

Jay Phillip= s
Legacy N92SX
IV-P N516DB


-----Original Message-----
F= rom: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Tony
Ketelaars
Sent: Thursda= y, January 05, 2012 12:00 PM
To: lml@lancaironline.net
Subject= : [LML] Lancair 4P power=0A settings

Can any one tell me what the MA= P/RPM power settings are for the
Lanceair 4P TSIO550
Like 60 - 65 - 7= 0 - 75%

Thanks

Tony Ketelaars

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=0A<TSIO550 LIV manifold Vs RPM CB oct05.JPG>--
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