Turnaround (Re: YS Engines)

Del K. Rykert drykert at localnet.com
Mon Mar 29 09:26:05 AKST 2004 

But you didn't include another important part of the equation. How many of
those were sponsored of which group.

                         del
               NSRCA - 473

----- Original Message ----- 
From: "CHAD NORTHEAST" <chadnortheast at shaw.ca>
To: <discussion at nsrca.org>
Sent: Monday, March 29, 2004 12:50 PM
Subject: Re: Turnaround (Re: YS Engines)


> Just FYI
>
> If I remember correctly from this past Worlds I worked it out to 53% YS to
47% Two-Stroke (OS, Webra, Mintor).
>
> The top 10 went like this
>
> 1. YS
> 2. YS
> 3. YS
> 4. YS
> 5. YS
> 6. OS
> 7. Hacker :)
> 8. YS
> 9. Webra
> 10. YS
>
> Even through the top 30 there is still a pretty good number of 4 strokes
vs two strokes.
>
>
> Chad
>
>
> ----- Original Message -----
> From: David Lockhart <DaveL322 at comcast.net>
> Date: Monday, March 29, 2004 9:29 am
> Subject: Turnaround (Re: YS Engines)
>
> > Bjorn,
> >
> > Yes, the rise of the YS 4C in pattern was shortly after the change to
> > turnaround (and mostly the rules that allowed a 4C with 2x the
> > displacementof a 2C).  Turnaround pattern was actually intended to
> > do a number of
> > things - some of which was to reduce footprint and reduce specific
> > enginenoise - at that time 4Cs were turning much slower RPMs (than
> > the 2Cs) and
> > were quieter (and still down on power at 2x the displacement).
> > Times have
> > changed!!!
> >
> > So far as the number of pattern competitors dropping out - some
> > dropped out
> > because they did not like the turnaround style of flying.  Some
> > dropped out
> > because they did not have the time to develop/learn new setups
> > which would
> > be needed to remain competitive.  Others absolutely dropped out
> > because of
> > the increased cost - and that has happened several times -
> > - when newer 2C "longstrokes" and lower RPM pipes arrived bringing a
> > competitive advantage (and for the most part the newer stuff was more
> > expensive),
> > - when 4Cs started to gain an edge in power, and the planes got bigger
> > (again more expensive),
> > - when the current rules allowing unlimited displacement engines
> > went into
> > effect (again more expensive).
> >
> > Regarding fuel sponsorship - I and a couple of pattern guys buy
> > our fuel in
> > drums from a local supplier (S&W) - 15% is well under $7.00 per
> > gallon.  I'm
> > quite happy to not know what a gallon of 30% DZ fuel costs
> > ($20.00+ per
> > gallon)??
> >
> > Regards,
> >
> > Dave
> >
> >
> >
> > ----- Original Message -----
> > From: "Bjorn Lehnardt" <blehnardt at att.net>
> > To: <discussion at nsrca.org>
> > Sent: Monday, March 29, 2004 1:03 AM
> > Subject: Re: YS Engines
> >
> >
> > > You forgot to mention the fuel sponsorships.  If you fly a YS a
> > lot, a
> > fuel
> > > sponsorship
> > > might be as valuable as the YS engine sponsorship.
> > >
> > > Didn't the rise of the YS fourstroke happen about the same time
> > as the
> > > change to
> > > the turnaround style of patterns?  I know there was a large drop
> > in the
> > > number
> > > of pattern flyers and the new patterns got much of the blame.  I
> > wonder if
> > > the
> > > increased cost of competition had a part in that.
> > >
> > > I had a Rossi with inflight mixture control.  If I'd had a radio
> > to do it,
> > > it could have
> > > worked like the new Webra MC carb setup.  If the rules back then had
> > allowed
> > > it, I bet we would have seen large two strokes with fancy carbs
> > a very
> > long
> > > time
> > > ago.
> > >
> > > ----- Original Message -----
> > > From: "David Lockhart" <DaveL322 at comcast.net>
> > > To: <discussion at nsrca.org>
> > > Sent: Sunday, March 28, 2004 10:18 PM
> > > Subject: Re: YS Engines
> > >
> > >
> > > Ed,
> > >
> > > I took a quick look at the 2003 Nationals results for Masters
> > and FAI.
> > > Looks like 1st place in Masters was a 2C, and 5 of the top 10 in
> > Masters> were 2Cs.  FAI was won by a YS4C, and 4 of the top ten
> > were 2Cs.  If
> > memory
> > > serves me correctly, all 6 of the 4C fliers are sponsored by YS
> > and one of
> > > the 2C fliers might be sponsored.
> > >
> > > I've been flying FAI for 5 seasons and used 3 different 2C
> > setups and
> > don't
> > > feel that I am missing out on a warm fuzzy feeling.  Maybe that
> > is because
> > > my 2C is cheaper, vibrates less, requires less maintenance, and
> > is more
> > > reliable than a 4C (parts is parts).  And I've not yet found a
> > 140DZ or
> > > 160DZ (w/ 30% nitro) with enough power to spin the prop I am
> > running on my
> > > 2C (w/ 20% nitro) - and yes, my 2C has plenty of torque and a linear
> > > throttle.  Oh yes, it is also quieter and uses less fuel per
> > flight than a
> > > 140/160DZ.
> > >
> > > 4Cs became very popular in pattern when the rules changed to
> > allow a 4C to
> > > have 2x the displacement of the 2C and YS very successfully
> > exploited that
> > > rule change and designed and produced some very powerful
> > competition 4Cs.
> > > Had it not been for that rule change, I doubt the 4C would have
> > ever even
> > > become popular in pattern.  As the current rules do not give an
> > advantageto
> > > a 2C or 4C, the 2Cs will return to dominance - unless the
> > electrics take
> > > over first.
> > >
> > > But then again, as others have pointed out, some pattern guys
> > just like to
> > > buy the most expensive toys and spend endless hours
> > tinkering..............
> > >
> > > Regards,
> > >
> > > Dave Lockhart
> > > DaveL322 at comcast.net
> > >
> > >
> > >   ----- Original Message -----
> > >   From: Troy Newman
> > >   To: discussion at nsrca.org
> > >   Sent: Sunday, March 28, 2004 11:16 PM
> > >   Subject: Re: YS Engines
> > >
> > >
> > >   Yamada the company that makes YS motors is dedicated to the
> > support of
> > F3A
> > > (pattern on the international scene).
> > >
> > >   The main reason YS motors dominate is because of their
> > performance. The
> > > problem is there are limited sizes of motors....The YS 160DZ is
> > now the
> > > biggest motor produced. It can fly about a 13lb plane and still have
> > enough
> > > power to hover it. So a 100" IMAC model just isn't in the realm
> > of the YS
> > > motor. If YS made a 100cc gas motor man alive would everybody
> > want one.
> > Mr.
> > > Yamada knows how to make Horsepower!
> > >
> > >   It is my understanding that Mr. Yamada used to work at Honda
> > back in the
> > > old days when the small Honda motors were revolutionary in motor
> > cycles,> smaller compact cars and so on.
> > >
> > >   As for Fun fly planes the YS 63 is probably the ultimate power
> > plant for
> > > any 46 sized model. Its got tremendous power and without a
> > weight problem.
> > > The Flip 3D's, Madness, and other 3D funfly planes like the
> > Hover Cobra,
> > > Magic, Razor, and UCD 46 are perfect models for the 63
> > >
> > >
> > >   I have seen YS 140Sport,s and 140L's run scale models up to 15-
> > 17lbs and
> > > depending on the plane it will fly them but you will not have
> > the extra
> > > power.
> > >
> > >   Now Heli's YS has a good foothold with the different motors
> > they offer
> > > including a 91 4stroke Heli motor.
> > >
> > >   YS engines are probably the best model motors produced today.
> > >
> > >   I can choose any motor I want to run and I choose the YS
> > motors above
> > > others because of the quality and performance. Here in recent
> > years the
> > > 2cycle motors have taken a foothold in the lower classes of pattern
> > flying.
> > > They make tons of power and tend to give a less experienced
> > flyer a warm
> > > fuzzy feeling. They will make good power on 15% nitro and even
> > not setup
> > > correctly they will make big power....I have run them from the
> > OS EFI, to
> > > the Webra with mixture control carbs. With other in between.
> > >
> > >   I prefer the YS 4 strokes because they perform better. So the main
> > reason
> > > YS dominates Pattern and not other forms is because they focus
> > on pattern
> > > models and pattern type setups. Because of this focus the motors
> > do the
> > job
> > > the best....The bigger models just will have to wait for YS to
> > produce> bigger motors if ever.
> > >
> > >
> > >   Troy Newman
> > >
> > >   ----- Original Message -----
> > >     From: Edward C. Hernandez
> > >     To: discussion at nsrca.org
> > >     Sent: Sunday, March 28, 2004 8:55 PM
> > >     Subject: YS Engines
> > >
> > >
> > >        Ok, time for another newbie question: it seems to me from the
> > > discussion and contest results and a few copies of the K factor
> > that Kane
> > > gave me at the D4 contest last year that pattern pilots prefer
> > YS engines,
> > > yet YS engines don't seem to dominate in other kinds of flying(IMAC,
> > scale,
> > > fun fly, etc). Um, why?
> > >
> > >     Ed Hernandez
> > >
> > >
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