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<DIV><FONT size=2 face=Arial>The specific heat generated by gasoline is about
twice the specific heat generated by alcohol, which, in turn is about twice the
specific heat generated by nitro. In other words, on a mass basis, nitro
is a more inefficient fuel on a pure basis than alcohol, which is less
efficient than gasoline. (from a volume/efficiency standpoint)</FONT></DIV>
<DIV><FONT size=2 face=Arial>Or so my handbook stated when I was building
competition engines. Then why use nitro at all? Well, because it
generates more O2 than it needs to burn, thereby helping the other
"combustibles" complete their combustion, and it's possible to run a hellacious
load of nitro per cycle because of it's burn characteristics.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Bill Glaze</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=vicenterc@comcast.net href="mailto:vicenterc@comcast.net">Vicente
"Vince" Bortone</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">General pattern discussion</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, December 13, 2009 8:48
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] This
email list is flawed in my opinion.</DIV>
<DIV><BR></DIV>
<DIV style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12pt">
<P>Matt,</P>
<P> </P>
<P>It will be very interesting to see your results. I had the chance to
build and fly the Abbra with ZDZ 40. I was able to comparare the same
plane with OS160 back-to-back. Clearly the ZDZ 40 was behind in
power (or power-to-weight ratio) when compared with the OS 160 when doing
the Master schedule of that time. I am sure that less fuel
consumption with less BTU content means less power. The Abbra
with the ZDZ 40 was ~3-4 oz over 11 lbs. The OS 160 Abbra was
9.8 lbs. I am not sure now what the new gasoline engines manufactures
are doing to increase the power. I believe that an improvement in the
design of gas engines is required to make it usable for
pattern. <BR><BR>Vicente "Vince" Bortone<BR><BR>----- Original Message
-----<BR>From: rcmaster199@aol.com<BR>To:
nsrca-discussion@lists.nsrca.org<BR>Sent: Saturday, December 12, 2009 10:46:09
PM GMT -06:00 US/Canada Central<BR>Subject: Re: [NSRCA-discussion] This email
list is flawed in my opinion.<BR><BR></P><FONT color=black size=2 face=arial>
<DIV><FONT size=2><FONT face="Arial, Helvetica, sans-serif">Yes that's true.
When I was mixing my fuel I needed to do it by volume until I figgered what
the volume weighed for each of the nitro blends I was mixing..... 30% nitro is
around 10% denser (weighs around 10% more for a tankful) than 15% nitro.
<BR><BR>Soooo....the guys who are running the YS not only use much larger
tanks but their tanks weigh more when full than they would have running lower
nitro. But YS is a dawg on lower nitro. You gotta admire YS Marketing
strategy<BR><BR>Yet another reason I am looking into gasoline powerplants for
pattern. Gas is significantly less dense than 30% nitro blend and gas engines
demand less fuel to begin with. A 320 cc tank (around 11 ozs) will run the 30
cc engine for around 12 minutes, enough for about 1 2/3 master
schedules.<BR><BR><BR><BR>MattK<BR></FONT></FONT></DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV
style="FONT-FAMILY: helvetica,arial; COLOR: black; FONT-SIZE: 10pt">-----Original
Message-----<BR>From: Verne Koester <verne@twmi.rr.com><BR>To: 'General
pattern discussion' <nsrca-discussion@lists.nsrca.org><BR>Sent: Sat, Dec
12, 2009 11:24 pm<BR>Subject: Re: [NSRCA-discussion] This email list is flawed
in my opinion.<BR><BR>
<DIV id=AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c>
<STYLE>#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c td{color: black;} @#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;}@#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c font-face {font-family:Tahoma; panose-1:2 11 6 4 3 5 4 4 2 4;} #AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c p.MsoNormal,#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c li.MsoNormal,#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman","serif"; color:black;}#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c a:link,#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;}#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c a:visited,#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;}#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c span.EmailStyle17 {mso-style-type:personal-reply; font-family:"Arial","sans-serif"; color:#1F497D;}#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;}@#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c page Section1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;}#AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c div.Section1 {page:Section1;}</STYLE>
<DIV class=Section1>
<DIV class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: rgb(31,73,125); FONT-SIZE: 16pt">The
weight of fuel is going to depend in large part on the percentage of nitro.
Nitro is the heaviest component. Don’t believe it? Go to the hobby shop and
pick up a gallon of 5% with one hand and 30% with the other, preferably from
the same manufacturer. You’ll be surprised. I know I was when a fuel
manufacturer showed me at Toledo about twenty years ago. Fortunately, pilots
with glow planes are weighed without the fuel so they don’t have to worry
about that…</SPAN></DIV>
<DIV class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: rgb(31,73,125); FONT-SIZE: 16pt"></SPAN> </DIV>
<DIV class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: rgb(31,73,125); FONT-SIZE: 16pt">Verne</SPAN></DIV>
<DIV class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: rgb(31,73,125); FONT-SIZE: 16pt"></SPAN> </DIV>
<DIV>
<DIV
style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: rgb(181,196,223) 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<DIV class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; COLOR: windowtext; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; COLOR: windowtext; FONT-SIZE: 10pt">
<A href="mailto:nsrca-discussion-bounces@lists.nsrca.org"
target=_blank>nsrca-discussion-bounces@lists.nsrca.org</A> [<A
href="mailto:nsrca-discussion-bounces@lists.nsrca.org?"
target=_blank>mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B>On
Behalf Of </B>Bill's Email<BR><B>Sent:</B> Saturday, December 12, 2009 8:16
PM<BR><B>To:</B> General pattern discussion<BR><B>Subject:</B> Re:
[NSRCA-discussion] This email list is flawed in my
opinion.</SPAN></DIV></DIV></DIV>
<DIV class=MsoNormal> </DIV>
<DIV class=MsoNormal>Ed Alt wrote: </DIV>
<DIV>
<DIV class=MsoNormal>About 0.75 oz per fluid oz.</DIV></DIV>
<DIV class=MsoNormal><BR><BR>I just weighed a gallon of fuel I have here. It
was 7.8 pounds including the plastic jig. 0.75 ounces per fluid ounce would
mean the jug weighs +/- 29 ounces (1.8 pounds). </DIV></DIV></DIV><!-- end of AOLMsgPart_3_36928406-251f-4393-a13c-29f1a41a8f4c -->
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