Two/Four Stokes
Bob Kane
getterflash at yahoo.com
Wed Nov 13 05:20:22 AKST 2002
Wojtek is right on, the DZ will quit at low throttle
if the mixture is too rich, and it gets worse as the
motor breaks in. Andrew Jesky's DZ was exhibiting the
same symptoms. My theory is a new motor runs hotter
and will tolerate the rich low-end. As it breaks in,
the motor runs cooler, and a rich low-end will cool it
to the point were it will not run. We leaned the pump
adjustment slightly on Andrew's motor, this is the
only adjustment on a DZ apart from the main needle.
--- "Tomanek, Wojtek" <tomanekw at saic-abingdon.com>
wrote:
> Try leaning the DZ high speed needle. The needle
> should be somewhere
> between 4/5 to 1-1/4 out (do not bottom out too hard
> or you will have to
> replace the needle seat). Sometimes it can be
> tricky to get to the right
> adjustment point. The DZs sound different than the
> Ls so you cannot use that
> as a measure. Worst case start at a very rich 2 or
> 3 turns out and keep
> leaning it out, chances are that you may not see
> appreciable RPM increase
> from 1-3/4 turns out down to 1 turn out. When you
> reach a point that the
> RPM actually decreases a little you have just passed
> the optimum point, and
> back out several clicks or 1/8 or little more. You
> also may have to lean
> the low end too. Here use the standard method.
>
> The raw fuel being injected directly into the
> cylinder will put out the glow
> plug if it is too rich. The DZs do not like to run
> too rich.
>
> Hope this helps your friend with the DZ in his
> Synergy.
>
> Wojtek
>
>
> -----Original Message-----
> From: Rodney Tanner
> [SMTP:rtanner at bbbeurorscg.com.mx]
> Sent: Tuesday, November 12, 2002 8:40 PM
> To: discussion at nsrca.org
> Subject: Re: Two/Four Stokes
>
> Quality - sure. But those YS "Dingos" seem to flame
> out a lot.
> Last Sunday a friend was testing his new Synergy
> with a new Dingo.
> 4 flights - 4 flame outs.
> My Webra 145: 4 flights - 0 flame outs
> Anyway Ron has been waiting for a long time for a
> 2-stroke revival.
> So let
> him revel a bit!
>
> A memorable quote from Ron in the KF, if my memory
> serves, went
> something
> like "4-strokes are just a momentary aberration,
> caused by a
> misguided rule
> change". . . ?? :-)
> We will just have to wait to see the listings after
> the 2003? F3A
> World
> Champs in Poland? Somehow I don´nt think much will
> change at that
> level.
> Until then I know which I prefer. The Webra 145.
> I have sold my YS´s and the Moki 2.10s (I had for
> IMAC)
> As for a weight limit - well its just not relevant.
> A Pattern Plane
> needs to
> be under 10 pounds, at least at this altitude.
>
> Rodney
> NSRCA #2906
>
>
>
>
> on 12/11/02 6:23 PM, Terry Terrenoire at
> amad2terry at juno.com wrote:
>
> > 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
=== message truncated ===
=====
Bob Kane
getterflash at yahoo.com
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