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Date: Fri, 14 Feb 2014 14:02:34 -0500
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From: Chris Zavatson <chris_zavatson@yahoo.com>
Reply-To: Chris Zavatson <chris_zavatson@yahoo.com>
Subject: Re: [LML] Re: 360 Service ceiling
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Tom,=0ADid your temps settle down after leveling off?=A0 The beauty of norm=
ally aspirated is that heat production is=A0nearly proportional to cooling =
capacity as altitude increases.=A0 Well, loss of ram will bring heat produc=
tion down a little faster.=A0 I tend to run 10-15 degrees cooler up high.=
=0A=0AChris Zavatson=0AN91CZ=0A360std=0Ahttp://www.n91cz.net/=0A=0A=0A=0AOn=
 Friday, February 14, 2014 4:53 AM, Tom <n20087@yahoo.com> wrote:=0A  =0AI =
have had mine to 17999 with no issue with stability. =A0Also recorded perso=
nal best ground speed of 278kts with an horrendous tailwind at that altitud=
e. My climb rate was in the 250 range at that altitude. The biggest issue I=
 encountered was poor engine cooling. Once past 13k in sustained climb the =
temps began to elevate because of higher deck angle and thinner air. =A0Unl=
ess you are built real light I would say the practical ceiling is 15k with =
o2 of course. My engine at the time ran approx 195hp. =A0=0A=0ASent from my=
 iPad=0A=0AOn Feb 13, 2014, at 5:01 PM, Sky2high@aol.com wrote:=0A=0A=0AAng=
ier, =0A>=0A>A friend with a blue-printed 360 (200 hp?) decided to stop at =
about FL21 =0Abecause aircraft=A0stability became an issue. =0A>=0A>Grayhaw=
k =0A>=0A>PS limiting factors at FL18 is proper O2 mask and supply,=A0instr=
ument =0Aflight plan filed, proper transponder, etc............ =0A>=0A>In =
a message dated 2/13/2014 3:49:48 P.M. Central Standard Time, N4zq@verizon.=
net writes: =0A>What is  the practical service ceiling with a 180hp IO360?=
=0A>>Years ago I was told you =0A  are there when the rate of climb drops t=
o 100ft/min of less.=0A>>How high will =0A  it go?=0A>>Frost bite might be =
the limiting =0A  factor?=0A>>=0A>>=0A>>:-)=0A>>=0A>>Angier Ames=0A>>N4ZQ=
=0A>>--=0A>>For archives and =0A  unsub http://mail.lancaironline.net:81/li=
sts/lml/List.html
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:ti=
mes new roman, new york, times, serif;font-size:14pt"><div><span>Tom,</span=
></div><div><span>Did your temps settle down after leveling off?&nbsp; The =
beauty of normally aspirated is that heat production is&nbsp;nearly proport=
ional to cooling capacity as altitude increases.&nbsp; Well, loss of ram wi=
ll bring heat production down a little faster.&nbsp; I tend to run 10-15 de=
grees cooler up high.</span></div><div><span><br></span></div><div><span>Ch=
ris Zavatson</span></div><div><span>N91CZ</span></div><div><span>360std</sp=
an></div><div><span><a href=3D"http://www.n91cz.net/">http://www.n91cz.net/=
</a></span></div><div class=3D"yahoo_quoted" style=3D"display: block;"> <br=
> <br> <div style=3D"font-family: times new roman, new york, times, serif; =
font-size: 14pt;"> <div style=3D"font-family: HelveticaNeue, Helvetica Neue=
, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div
 dir=3D"ltr"> <font face=3D"Arial" size=3D"2"> On Friday, February 14, 2014=
 4:53 AM, Tom &lt;n20087@yahoo.com&gt; wrote:<br> </font> </div>  <div clas=
s=3D"y_msg_container"><div id=3D"yiv1648188056"><div><div>I have had mine t=
o 17999 with no issue with stability. &nbsp;Also recorded personal best gro=
und speed of 278kts with an horrendous tailwind at that altitude. My climb =
rate was in the 250 range at that altitude. The biggest issue I encountered=
 was poor engine cooling. Once past 13k in sustained climb the temps began =
to elevate because of higher deck angle and thinner air. &nbsp;Unless you a=
re built real light I would say the practical ceiling is 15k with o2 of cou=
rse. My engine at the time ran approx 195hp. &nbsp;</div><div><br>Sent from=
 my iPad</div><div><br>On Feb 13, 2014, at 5:01 PM, <a href=3D"mailto:Sky2h=
igh@aol.com" target=3D"_blank" rel=3D"nofollow" ymailto=3D"mailto:Sky2high@=
aol.com">Sky2high@aol.com</a> wrote:<br><br></div><blockquote type=3D"cite"=
><div>=0A=0A =0A =0A<font id=3D"yiv1648188056role_document" color=3D"#00000=
0" face=3D"Arial" size=3D"2">=0A<div>Angier,</div>=0A<div>&nbsp;</div>=0A<d=
iv>A friend with a blue-printed 360 (200 hp?) decided to stop at about FL21=
 =0Abecause aircraft&nbsp;stability became an issue.</div>=0A<div>&nbsp;</d=
iv>=0A<div>Grayhawk</div>=0A<div>&nbsp;</div>=0A<div>PS limiting factors at=
 FL18 is proper O2 mask and supply,&nbsp;instrument =0Aflight plan filed, p=
roper transponder, etc............</div>=0A<div>&nbsp;</div>=0A<div>=0A<div=
>In a message dated 2/13/2014 3:49:48 P.M. Central Standard Time, =0A<a hre=
f=3D"mailto:N4zq@verizon.net" target=3D"_blank" rel=3D"nofollow" ymailto=3D=
"mailto:N4zq@verizon.net">N4zq@verizon.net</a> writes:</div>=0A<blockquote =
style=3D"padding-left: 5px; margin-left: 5px; border-left-color: blue; bord=
er-left-width: 2px; border-left-style: solid;"><font color=3D"#000000" face=
=3D"Arial" size=3D"2" style=3D"background-color: transparent;">What is =0A =
 the practical service ceiling with a 180hp IO360?<br>Years ago I was told =
you =0A  are there when the rate of climb drops to 100ft/min of less.<br>Ho=
w high will =0A  it go?<br>Frost bite might be the limiting =0A  factor?<br=
><br><br>:-)<br><br>Angier Ames<br>N4ZQ<br>--<br>For archives and =0A  unsu=
b =0A<a  href=3D"http://mail.lancaironline.net:81/lists/lml/List.html" targ=
et=3D"_blank" rel=3D"nofollow">http://mail.lancaironline.net:81/lists/lml/L=
ist.html</a></font></blockquote></div></font></div></blockquote></div></div=
><br><br></div>  </div> </div>  </div> </div></body></html>
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