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Date: Tue, 05 Mar 2013 16:35:42 -0500
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From: thomas williams <tfsent@att.net>
Reply-To: thomas williams <tfsent@att.net>
Subject: Re: [LML] Re: which engine/prop for 360 MKII?
In-Reply-To: <list-6096482@logan.com>
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Hartzell designed a 2 blade prop specifically for the 320/360 that is only =
68" so it has more ground clearance and has scimitar tips.=0A=0A=0A=0A_____=
___________________________=0A From: Bill Harrelson <n5zq@verizon.net>=0ATo=
: lml@lancaironline.net =0ASent: Tuesday, March 5, 2013 7:07 AM=0ASubject: =
[LML] Re: which engine/prop for 360 MKII?=0A =0A=0AMiro,=0A=C2=A0=0AAs you =
probably know, your airframe was =0Aoriginally designed for the Lycoming 32=
0 engine series. So many folks have put =0ALycoming 360s in these airframes=
 that they are now almost universally knows as =0ALancair 360s. There is NO=
 difference in the airframe, it=E2=80=99s still the one =0Adesigned for the=
 320. Don=E2=80=99t discount an O-320 or IO-320 in your engine choices. =0A=
I have an O-320 on mine and find that it has plenty of power, is well balan=
ced =0Aand incredibly efficient. The larger, heavier engines will give you =
a bit better =0Aclimb but only a slightly faster cruise at the cost of at l=
east another gph of =0Afuel. As a matter of fact, if I could set up the rac=
e, I would bet that I would =0Abe faster in my 320 than any 360. (I=E2=80=
=99d set it up to be a long race and I=E2=80=99d go =0Anon-stop whereas the=
 360 would need to stop for fuel). There is nothing wrong =0Awith the 360 e=
ngines in this airframe. It=E2=80=99s just that you shouldn=E2=80=99t exclu=
de the =0A320. Depending on your mission profile, it could be a better fit.=
 =0A=C2=A0=0AI have an MT two blade prop on mine and am quite =0Asatisfied =
with it. In general, a 3 blade prop will give you a slightly better =0Astat=
ic thrust (slightly shorter t.o. and maybe a little better initial climb) =
=0Athe 2 blade will be slightly more efficient in cruise giving you a sligh=
tly =0Abetter TAS and more efficiency. Just a guess, but I think that many =
people who =0Achoose a 3 blade prop do it just for looks. IMHO that=E2=80=
=99s not really a good =0Acriteria. Just something else to consider.=0A=C2=
=A0=0ABill Harrelson=0AN5ZQ 320 2,150 hrs=0AN6ZQ=C2=A0 IV 200 hrs.
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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:12pt"><div><span>Hartzell d=
esigned a 2 blade prop specifically for the 320/360 that is only 68" so it =
has more ground clearance and has scimitar tips.<br></span></div><div><br><=
/div>  <div style=3D"font-family: times new roman, new york, times, serif; =
font-size: 12pt;"> <div style=3D"font-family: times new roman, new york, ti=
mes, serif; font-size: 12pt;"> <div dir=3D"ltr"> <font face=3D"Arial" size=
=3D"2"> <hr size=3D"1">  <b><span style=3D"font-weight:bold;">From:</span><=
/b> Bill Harrelson &lt;n5zq@verizon.net&gt;<br> <b><span style=3D"font-weig=
ht: bold;">To:</span></b> lml@lancaironline.net <br> <b><span style=3D"font=
-weight: bold;">Sent:</span></b> Tuesday, March 5, 2013 7:07 AM<br> <b><spa=
n style=3D"font-weight: bold;">Subject:</span></b> [LML] Re: which engine/p=
rop for 360 MKII?<br> </font> </div> <br>=0A<div id=3D"yiv158519201">=0A<di=
v dir=3D"ltr">=0A<div dir=3D"ltr">=0A<div style=3D"FONT-FAMILY:'Arial Narro=
w';COLOR:#000000;FONT-SIZE:12pt;">=0A<div><font face=3D"Arial Narrow">Miro,=
</font></div>=0A<div>&nbsp;</div>=0A<div><font face=3D"Arial Narrow">As you=
 probably know, your airframe was =0Aoriginally designed for the Lycoming 3=
20 engine series. So many folks have put =0ALycoming 360s in these airframe=
s that they are now almost universally knows as =0ALancair 360s. There is N=
O difference in the airframe, it=E2=80=99s still the one =0Adesigned for th=
e 320. Don=E2=80=99t discount an O-320 or IO-320 in your engine choices. =
=0AI have an O-320 on mine and find that it has plenty of power, is well ba=
lanced =0Aand incredibly efficient. The larger, heavier engines will give y=
ou a bit better =0Aclimb but only a slightly faster cruise at the cost of a=
t least another gph of =0Afuel. As a matter of fact, if I could set up the =
race, I would bet that I would =0Abe faster in my 320 than any 360. (I=E2=
=80=99d set it up to be a long race and I=E2=80=99d go =0Anon-stop whereas =
the 360 would need to stop for fuel). There is nothing wrong =0Awith the 36=
0 engines in this airframe. It=E2=80=99s just that you shouldn=E2=80=99t ex=
clude the =0A320. Depending on your mission profile, it could be a better f=
it. </font></div>=0A<div>&nbsp;</div>=0A<div><font face=3D"Arial Narrow">I =
have an MT two blade prop on mine and am quite =0Asatisfied with it. In gen=
eral, a 3 blade prop will give you a slightly better =0Astatic thrust (slig=
htly shorter t.o. and maybe a little better initial climb) =0Athe 2 blade w=
ill be slightly more efficient in cruise giving you a slightly =0Abetter TA=
S and more efficiency. Just a guess, but I think that many people who =0Ach=
oose a 3 blade prop do it just for looks. IMHO that=E2=80=99s not really a =
good =0Acriteria. Just something else to consider.</font></div>=0A<div>&nbs=
p;</div>=0A<div>Bill Harrelson</div>=0A<div>N5ZQ 320 2,150 hrs</div>=0A<div=
>N6ZQ&nbsp; IV 200 hrs.</div>=0A<div><font face=3D"Arial Narrow"></font>&nb=
sp;</div></div></div></div>=0A</div><br><br> </div> </div>  </div></body></=
html>
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