Two/Four Stokes

Wed Nov 13 03:04:04 AKST 2002

The MVVS 1.6 gasser was pretty close;  spun my Bolly 16.5 x 12 at nearly
8100 rpm.  Plenty for a good Masters sequence.  Problem was weight. Motor
only 31 oz....but then, ignition and BATTERY, then switch, and the weight
went up pretty high.  For reliable use, the ignitions today need pretty high
current densities to run reliably, at least most manufacturers recommend an
900 mah or larger NiCad.
    On a pipe, it was a great setup, reasonably-quiet, and the Walbro carb
made things pretty nice.

On the lighter side is the RCS 1.4, which is VERY light with battery and
ignitions module, BUT it won't turn much over a 16 x 8 APC very well.

Of course, Dick Hanson has done the ZDZ 40 RE on a pipe in his own design
pattern bird.  Turns a 19 x 12 or some such around 6900 for flying....but he
had to do a LOT to the airframe to get the weight down, as that motor combo
is over 3 lbs, also.

Bob Pastorello
NSRCA 199, AMA 46373
rcaerobob at cox.net
www.rcaerobats.net

----- Original Message -----
From: "Wade & Barbara Akle" <wb_akle at msn.com>
To: <discussion at nsrca.org>
Sent: Wednesday, November 13, 2002 5:36 AM
Subject: Re: Two/Four Stokes

> Anybody knows of a viable 2M, 5 Kg Pattern plane Gas engine? in
development?
> Now that we have broken the 2/4 stroke barrier, it would be interesting to
> see if a Gas engine can be done that fits the newer large nose cowls.
> Wade
>
>
> ----- Original Message -----
> From: "MILLER, EDWARD, MGSVC" <em0 at att.com>
> To: <discussion at nsrca.org>
> Sent: Wednesday, November 13, 2002 3:30 AM
> Subject: RE: Two/Four Stokes
>
>
> Yeah, since you guys ( including me ) switched to 2 strokes, I don't have
a
> handful of YS 4 strokes in various states of repair/disrepair around the
> shop anymore. I sorta feel like the Maytag repairman. I'm a convert to the
> "bumble bee on steroids"
> Ed M.
>
>
>
>
> -----Original Message-----
> From: Dave&Sue Funk [mailto:dnsfunk at peoplepc.com]
> Sent: Tuesday, November 12, 2002 8:35 PM
> To: discussion at nsrca.org
> Subject: Re: Two/Four Stokes
>
>
> If you want to see quality take A look at the OS 140 RX. and after you put
> it in your plane and run it you don't have to take it back out and send it
> in for the latest piston that will make it run right.
>
> Dave
> ----- Original Message -----
> From: "Terry Terrenoire" <amad2terry at juno.com>
> To: <discussion at nsrca.org>
> Sent: Tuesday, November 12, 2002 7:23 PM
> Subject: Re: Two/Four Stokes
>
>
> > What a pitty! Guess some people don't appreciate quality!
> >
> > Terry T.
> >
> > On Tue, 12 Nov 2002 19:19:26 -0500 ronlock <ronlock at comcast.net> writes:
> > > I recently shared a day at a sport field with Joe and a number of
> > > other pattern guys - There were seven pattern pilots, seven pattern
> > > birds, and not a 4 stroke in sight !
> > >
> > > Ron Lockhart
> > > ----- Original Message -----
> > > From: "Joe Lachowski" <jlachow at hotmail.com>
> > > To: <discussion at nsrca.org>
> > > Sent: Tuesday, November 12, 2002 7:28 AM
> > > Subject: Re: Weight Limit/cost
> > >
> > >
> > > > Come on Terry, when are you gonna come over to the dark side and
> > > fly a two
> > > > stroke?<vbg>
> > >
> > > > >From: Terry Terrenoire <amad2terry at juno.com>
> > > > >Reply-To: discussion at nsrca.org
> > > > >To: discussion at nsrca.org
> > > > >Subject: Re: Weight Limit/cost
> > > > >Date: Tue, 12 Nov 2002 06:08:55 -0500
> > > > >
> > > > >Just to confirm this:
> > > > >I am currently building a Synergy
> > > > >Kit cost $875
> > > > >Engine $500, YS 1.40 L
> > > > >Header $40
> > > > >4 digital servos $360
> > > > >Paint and Monokote $100?
> > > > >Ball bearing controls $40
> > > > >Pilot $10
> > > > >Wheels $30
> > > > >Add another misc $100 and you have a total of $2055
> > > > >
> > > > >And this is with top equipment. Have not purchased a pipe yet and
> > > the
> > > > >throttle servo is a 132 from my inventory.
> > > > >Eliminate the ballbearing hardware, and digital servos and you're
> > > back
> > > > >under $2000.
> > > > >
> > > > >Terry T.
> > > > >
> > > > >On Mon, 11 Nov 2002 20:35:00 -0600 "Keith Black"
> > > <tkeithb at attbi.com>
> > > > >writes:
> > > > > > > BTW you mentioned being competitive with a $1500 plane.  If
> > > true
> > > > > > why are
> > > > > > > the "top boys" flying planes were the radio/receiver/servos
> > > along
> > > > > > cost
> > > > > > $1500?
> > > > > >
> > > > > > What I said was one could be competitive by spending $1500 to
> > > $2000
> > > > > > and I
> > > > > > feel that this is the case. That's not to say that the "big
> > > boys",
> > > > > > or even
> > > > > > the well financed guy at the local club, won't spend more.
> > > Obviously
> > > > > > that
> > > > > > dollar figure doesn't assume you get a ready built plane from
> > > > > > someone like
> > > > > > PLProd. BTW, I wasn't including the transmitter in that figure
> > > as
> > > > > > most
> > > > > > people in the hobby have a TX they fly multiple planes with
> > > (even
> > > > > > the sport
> > > > > > guys). You can get a name brand JR or Futaba radio with lots
> > > extras
> > > > > > like
> > > > > > multi-model support, dual rates, exponential, programmable
> > > mixes,
> > > > > > etc. for
> > > > > > $250.
> > > > > >
> > > > > > As to the $1500 to $2000 figure consider the following: Top
> > > notch
> > > > > > JR
> > > > > > digitals on all flight surfaces for around $400 to $500, Webra
> > > 1.45
> > > > > > or OS
> > > > > > 1.40RX - $395.00 to $450, Hitec receiver for $60, competitive
> > > > > > cutting edge
> > > > > > kit or ARC for $425 to $700 (in my case I'm building an Aries
> > > from
> > > > > > AeroSlave, but you can also go with others or even get an ARC
> > > Focus
> > > > > > for
> > > > > > $595). Add another $300 or so for building supplies, landing
> > > gear,
> > > > > > spinner,
> > > > > > linkages, etc.
> > > > > >
> > > > > > That comes to right around $2000 on the high end and $1500 on
> > > the
> > > > > > low end,
> > > > > > and the result in either case would be a very competitive
> > > plane.
> > > > > >
> > > > > > The point of my message was that I can be on a competitive
> > > playing
> > > > > > field in
> > > > > > Pattern in this dollar range, but in IMAC the price tag is
> > > more like
> > > > > > $7000
> > > > > > and continually growing as pilots go from 33%, to 40%, to 50%
> > > > > > planes. It
> > > > > > would be very discouraging to me to have to compete against
> > > someone
> > > > > > that
> > > > > > drops this much money on am IMAC plane, but if someone drops
> > > $3000
> > > > > > or $4000
> > > > > > on a pattern plane I know it's probably just because they
> > > didn't
> > > > > > want to
> > > > > > build :-)
> > > > > >
> > > > > > Keith Black
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: "GeorgeF." <av8tor at flash.net>
> > > > > > To: <discussion at nsrca.org>
> > > > > > Sent: Monday, November 11, 2002 6:06 PM
> > > > > > Subject: Re: Weight Limit
> > > > > >
> > > > > >
> > > > > > >
> > > > > > > >  In IMAC they're continually building them bigger and
> > > bigger,
> > > > > > and one
> > > > > > has
> > > > > > > > to follow suite to be competitive.
> > > > > > >
> > > > > > > This "bigger and bigger" as resulted in many flying fields
> > > being
> > > > > > > lost.  Both because of "big" planes being flown wrecklessly
> > > and
> > > > > > because of
> > > > > > > noise.
> > > > > > >
> > > > > > > >
> > > > > > > >I know that changes often have unintended consequences.
> > > The
> > > > > > question is
> > > > > > > >will lifting the weight limitation cause an explosion in
> > > price or
> > > > > > simply
> > > > > > > >provide more economical and technically appealing options
> > > as
> > > > > > others have
> > > > > > > >suggested.
> > > > > > >
> > > > > > >
> > > > > > > For an answer to this lets take a look at what happened with
> > > the
> > > > > > engine
> > > > > > > size rule was lifted.  What happened to cost?  What happened
> > > to
> > > > > > average
> > > > > > > aircraft size?  Both went up.
> > > > > > >
> > > > > > > BTW you mentioned being competitive with a $1500 plane.  If
> > > true
> > > > > > why are
> > > > > > > the "top boys" flying planes were the radio/receiver/servos
> > > along
> > > > > > cost
> > > > > > $1500?
> > > > > > >
> > > > > > > George
> > > > > > >
> > > > > > >
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