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Date: Sat, 04 Jun 2011 09:52:02 -0400
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From: Gary Casey <casey.gary@yahoo.com>
Subject: Re: L-IV Choice of Engine
In-Reply-To: <listdigest-5001184@logan.com>
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Lot's of interesting comments on the subject of alternate engines.=A0 I was=
 =0Aconvinced I was going to use an automotive V-8 at one time, but the las=
t straws =0Awere the difficulty (or impossibility) of getting insurance and=
 the low (or =0Aimpossibility) of resae value.=A0 As someone said, the resa=
le value would likely =0Abe the same as an aircraft without an engine.=A0 A=
nd my analysis showed that the =0Ainstalled cost would be about the same (o=
r more)=A0then for an aircraft engine.=A0 =0ABut the internals of any of th=
ese engines are robust and should=A0able to tolerate =0Ahigh continuous pow=
er.=A0 My conclusions - opinions of the disadvantages:=0A=A0=0AV-8 with red=
uction gear:=0AHeavy - about 150 pound penalty=0AComplex installation and s=
ystems=0ASlight fuel consumption penalty=0A=A0=0AV-8 engine direct drive tu=
rbocharged:=0AHeavy - about 75 pound penalty=0AComplex installation and sys=
tems=0A=A0=0ARotary engine:=0AVery complex installation and systems=0AHeavy=
 - up to 50 pound penalty=0APotentially fragile apex seals=0AHgh cooling dr=
ag=0ANoisy=0ASignificant fuel consumption penalty increases the weight pena=
lty=0A=A0=0ATurbine engine:=0AHigh initial cost=0AHigh fuel consumption neg=
ates any weight savings=0A=A0=0AMisc. opinions:=A0 The liquid-cooled V-8 da=
tes back to about 1918 when Chevrolet =0Abuilt the first mass-produced one,=
 so it's technology is even=A0older than the =0Aair-cooled engine's "30's t=
echnology" that someone mentioned.=0A=A0=0AGary Casey
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<html><head><style type=3D"text/css"><!-- DIV {margin:0px;} --></style></he=
ad><body><div style=3D"font-family:bookman old style, new york, times, seri=
f;font-size:12pt"><P>Lot's of interesting comments on the subject of altern=
ate engines.&nbsp; I was convinced I was going to use an automotive V-8 at =
one time, but the last straws were the difficulty (or impossibility) of get=
ting insurance and the low (or impossibility) of resae value.&nbsp; As some=
one said, the resale value would likely be the same as an aircraft without =
an engine.&nbsp; And my analysis showed that the installed cost would be ab=
out the same (or more)&nbsp;then for an aircraft engine.&nbsp; But the inte=
rnals of any of these engines are robust and should&nbsp;able to tolerate h=
igh continuous power.&nbsp; My conclusions - opinions of the disadvantages:=
</P>=0A<P>&nbsp;</P>=0A<P>V-8 with reduction gear:</P>=0A<P>Heavy - about 1=
50 pound penalty</P>=0A<P>Complex installation and systems</P>=0A<P>Slight =
fuel consumption penalty</P>=0A<P>&nbsp;</P>=0A<P>V-8 engine direct drive t=
urbocharged:</P>=0A<P>Heavy - about 75 pound penalty</P>=0A<P>Complex insta=
llation and systems</P>=0A<P>&nbsp;</P>=0A<P>Rotary engine:</P>=0A<P>Very c=
omplex installation and systems</P>=0A<P>Heavy - up to 50 pound penalty</P>=
=0A<P>Potentially fragile apex seals</P>=0A<P>Hgh cooling drag</P>=0A<P>Noi=
sy</P>=0A<P>Significant fuel consumption penalty increases the weight penal=
ty</P>=0A<P>&nbsp;</P>=0A<P>Turbine engine:</P>=0A<P>High initial cost</P>=
=0A<P>High fuel consumption negates any weight savings</P>=0A<P>&nbsp;</P>=
=0A<P>Misc. opinions:&nbsp; The liquid-cooled V-8 dates back to about 1918 =
when Chevrolet built the first mass-produced one, so it's technology is eve=
n&nbsp;older than the air-cooled engine's "30's technology" that someone me=
ntioned.</P>=0A<P>&nbsp;</P>=0A<P>Gary Casey</P></div></body></html>
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