YS Longevity and Fuel $$$ Part 2

Wed Sep 29 05:25:09 AKDT 2004

I thought the electron generated motor won FAI.

Great discussion though on motors.  I am sure if all were sponsored with 2c
they would be wining with them . At the FAI level these guys could fly about
anything.
I am sure most pattern fliers will use what is most serviceable and reliable
for them in their area.   Pier support and LHD parts availability play a big
role in this.

I still have not found a more reliable motor in an IC then the OS brand...
since the 70's   I have several 26+yr old OS 2C engines in various sizes in
my shop that still run good today.  But... thats what works for me.

Smooth FLying....

Wayne Galligan

----- Original Message ----- 
From: <dentdoc007 at bellsouth.net>
To: <discussion at nsrca.org>
Sent: Wednesday, September 29, 2004 7:54 AM
Subject: Re: Re: YS Longevity and Fuel $$$ Part 2

> Did I miss something? Did a YS WIN?
> >
> > From: "Troy Newman" <troy_newman at msn.com>
> > Date: 2004/09/28 Tue PM 09:00:12 EDT
> > To: <discussion at nsrca.org>
> > Subject: Re: YS  Longevity and Fuel $$$ Part 2
> >
> > No John you didn't miss anything!
> >
> > Performance does matter! When the chips are down that is. Pilot workload
is lower and a major advantage with the YS motor.
> >
> > TN
> >   ----- Original Message ----- 
> >   From: John Ferrell
> >   To: discussion at nsrca.org
> >   Sent: Tuesday, September 28, 2004 2:57 PM
> >   Subject: Re: YS Longevity and Fuel $$$ Part 2
> >
> >
> >   I don't recall seeing any two strokes in the FAI finnals at the Nats.
Did I miss any?
> >
> >   John Ferrell
> >   http://DixieNC.US
> >
> >     ----- Original Message ----- 
> >     From: Troy Newman
> >     To: discussion at nsrca.org
> >     Sent: Tuesday, September 28, 2004 4:28 PM
> >     Subject: Re: YS Longevity and Fuel $$$ Part 2
> >
> >
> >
> >     cont'd from part #1
> >
> >
> >
> >     .......
> >
> >
> >
> >     Just because the 2 strokes carry the 17-12 well doesn't mean the
140DZ has less power if it doesn't like that same prop. Its a different type
of power and you have to get it to work in the range its happy. For the
140's this happy range is up over 8400 and below about 9000. If they are
running in this range the power is like afterburners. Load them down and
work harder, eat parts and don't like it. The 140 2 strokes can run in the
7800-7900 range and don't seem to have trouble. The 140DZ's when setup right
turn the same basic props at the same RPMS as the 140 2 strokes.but in
reality the 4 strokes are not in their torque curve so it doesn't matter.
Turn the motor where it makes the most power. We have forgotten this from
the old 60 days.  My experience is the YS motors don't like this low
7800 -8000 range of RPM. So pick a good fuel you can get and run it in the
8400-8800 range. If your choice in fuels is a std 20-20 blend then don't for
throw a 17-12 or 17-13 on the darn thing. It will break it. But try a 15-12W
or a 16-11 and see what happens. If you choose a good fuel and run the
engine so it sounds happy and is not barking every time you throttle it up
it will last a good long time.
> >
> >
> >
> >     One Note. I got home and tried the 15.5-12 4-Blade on the 160DZ.
Runs very smooth and has Excellent performance on the 30% Heli. I'm turning
it up over 8600 and the model has very good speed control in this setup. I
also found that here in the PHX summer heat the motor was running cooler
than with the 17-12 running the same RPM.  Cooler running is also a good
thing on the YS motors just like the 2 strokes. when the 2 strokes get hot
they eat bearings rings pistons and so on and have problems with the pumps.
Ask the Webra owners about the pumps and heat.. Same with the YS but in the
YS hot runs also mean cam's, valves and these parts are $$ and I understand
that. Parts is parts and the cost is high for both 4 stroke parts and 2
stroke parts.. I think it's a wash on parts. Yes the YS have more that can
go bad and wear.but the 2 strokes need bearing much more often than the 4
strokes.SO in my estimation it's a wash. Besides. If the motor is out of the
model does it matter? The problem is it has to come out of the model..this
means down time and frustration. One great thing about YS is the parts are
available. This can't always be said for the other brands.
> >
> >
> >
> >     If you guys have trouble with your motors or questions email me
offline and I'll see if I can help you out with some ideas. I really want
everybody to benefit from the little things I have learned with these
motors. I have been that guy struggling in Wyoming trying to fly pattern on
your own. Its a tough row and I hate to see guys have trouble with any of
their equipment. This is what drives people away from pattern. I have a good
relationship with YS Performance but I choose the products I run. Nobody
pays me!  I have run the 2 strokes and found them to not have the
performance I wanted. Webra's OS's and the likes. For me they didn't stack
up. Every setup has its little learning curve and the DZ's are no different.
If I can pass along the info to help you get over the hump with them I know
you'll love them as much as I do.
> >
> >
> >
> >     Sometimes I'm a big advocate of higher priced stuff than you really
don't need in order to play the game. To me flying time vs down time for
repair work is the most important thing to me. I work very hard to have as
little fix it stuff go wrong as possible...This goes for servos to clevis
links to motors-headers-pipes. I've been very blessed in that people have
helped me along and I have learned some little tricks and tips. I'm 100%
willing to pass along the knowledge. It makes pattern fun for me. For me
performance is the most important thing. Not how many RPMS I can turn
Lockhart's 3 blade prop at, or that I can hit 197 in a time trial. Its how
it performs in the sequence and how it will give me an advantage to take on
guys like Chip, Jason and Quique. These are the pilots I look toward as the
people that have set the standard. I have a passion to fly at that level
with these great pilots. The models, the motors, and the radio gear is all a
tool to apply the trade and if your tool don't work its darn frustrating I
know.
> >
> >
> >
> >     Troy
> >
> >
> >
> >
>
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