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<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Part 1</SPAN></P>
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<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Ok let me see if I can handle this
in a way that helps you guys out.</SPAN><SPAN
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style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">The YS motors as Mike said are the
most powerful motor in my opinion also. Your reliability issues are a concern to
me. I don't have these issues. I think I know why. I'm not saying I'm the magic
guru but rather I think I have learned something about the motors in the last
couple years.<o:p></o:p></SPAN></P>
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style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">What prop are you guys using?
17-12std right? and the motor turns between 7800-8100. I have a suggestion for
you. Only time will tell and if you are going to run the DZ anyway it might be a
good test for you. I will assure you won’t be lacking the pull you need....
Track your flights and see if you get better reliability running the
motor at 8500-8800. This means running a 16-12 instead. If the motors are
turning up in the 8400-8800 they make even more power and they are not working
nearly as hard. I ran the 17-12's on the 140's and felt the motor was just
working too hard. But this was the best performance I thought I could
get...sooooo I thought… That's what I ran. When running this low RPM or high
load if you will, I had some problems. They would wear out quicker,
ring-piston-sleeve...Bearings, then little things like worn out cams, pump
issues, and even a broken crank. Now I switched back to a 16-12 and the motor
sounded really happy...not only that it was making more horses. Talked around
and many of the people that really knew the motor especially the Japanese were
all running smaller props than us here in the USA. The Europeans like CPLR and
the Matts were also running smaller props than I was.... So I changed as a test.
Perhaps this is why I have had such good luck. Another prop to run is the
15.5-12.5W. The main reason I run the bigger props is for the NATS...to meet the
noise rules. But in everyday flying I'm running smaller stuff. By the way I'm
using the std 17-12 on the 160DZ. Most often.<o:p></o:p></SPAN></P>
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style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Bill Fuel:<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Anyone that is paying $26 a gallon
for fuel needs his head examined. You can mail order many good brands of fuel to
suit your pallet at cheaper prices than this. Mach7 is the mail order brand of
Morgan fuels and it’s the same stuff as Cool Power. Last I checked it was like
$18-20 a gallon shipped. I also know Magnum has a fuel that works well in the YS
motors and the Chicago Mafia uses it. I think it’s in the same price range. Now
you may need to buy a few cases like 6-7 to get the price. I also talked to some
folks in Northern California that go together and get a big batch of fuel
20+ cases and they get the DZ blend 30% Heli equivalent for around $15-16 a
gallon. I don’t know for sure on the prices on the fuels.<o:p></o:p></SPAN></P>
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<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I do recommend using a fuel with the
thinner oil...Low Vis. Heli oil. This will give the best performance. Morgan
Fuels makes a 20% Heli that is the same product as the 30% Heli at a cheaper
cost. It runs the same and RPMS are down about 200-300 with the less nitro. For
the best performance the 30% is what I choose. Now I do know that the 140DZ's
and 160DZ with both run on a normal 20-25% sport or pattern blend fuel too. I
have done it. They run fine on this stuff but the performance suffers a little.
Pump and needle setting will really vary on these other fuels but it is possible
to get the motors to run well on these fuels. I know many that
have.<o:p></o:p></SPAN></P>
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style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have had the best luck with parts
and longevity with the Cool Power. I have the one 160DZ that has about 600
flights on it and only thing is it had a new ring at about 300 flights. And it
lost a carb bolt at about 20 flights ( I guess I didn’t tighten it up?)…Other
than this Same parts otherwise since it was new back in December. Needs
ring-sleeve and bearings for good measure now but its still running well. It has
run mostly 30% Heli pro some 20% and about 2 cases of Cool Power Pro-pattern
(green) in a combo of 20% 25% and 30% and also ran some 25% CP sport fuel. The
sport fuel 25% actually ran a little better top end than the Pro-pattern. But
the Heli fuels have them all beat…even nitro for nitro.</SPAN></P>
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<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">.........Cont'd in part
2<o:p></o:p></SPAN></P>
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