[NSRCA-discussion] YS 140DZ tuning question

[jivey61 at bellsouth.net]

Troy
 That was a good one. I thought we were trying to fix Bob's engine. hehehe

Jim Ivey
----- Original Message ----- 
From: "Troy A. Newman" <troy_newman at msn.com>
To: "Troy A. Newman" <troy_newman at msn.com>; "NSRCA Mailing List"
<nsrca-discussion at lists.nsrca.org>
Sent: Monday, May 01, 2006 3:54 PM
Subject: Re: [NSRCA-discussion] YS 140DZ tuning question


> That was position not prostitution!
>
> Spell checker going too fast
>
> Troy
> ----- Original Message ----- 
> From: "Troy A. Newman" <troy_newman at msn.com>
> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> Sent: Monday, May 01, 2006 12:53 PM
> Subject: Re: [NSRCA-discussion] YS 140DZ tuning question
>
>
> > I would recommend leaning the HS a few clicks and try it out and see if
> > its too lean. If its not too lean then fly it and see.
> >
> > The DZ motors run in a leaner spot of the HS than an pressurized version
> > will. Yes it will make great gobs of MOE rich but it will not idle well
if
> > its too rich and it will shake bad too. Just lean it down a bit and see
> > where it wants to be. I usually end up with a fairly new motor about
> > 1.25turns out. You are a little further away and most like 1/4 turn on
the
> > needle will solve the problem for you.
> >
> > Basically a good rule of thumb on any motor is to not be a prostitution
> > where if it quits right now you can't make it back. I guess you learned
> > that one this time.
> >
> >
> > Troy
> > ----- Original Message ----- 
> > From: "Troy A. Newman" <troy_newman at msn.com>
> > To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> > Sent: Monday, May 01, 2006 12:42 PM
> > Subject: Re: [NSRCA-discussion] YS 140DZ tuning question
> >
> >
> >> Bob,
> >>
> >> too rich...most likely on the HS...but could be too much pressure out
of
> >> the
> >> pump.
> >>
> >> Its no longer a pressure regulator its a pump. This is common when the
HS
> >> is
> >> too rich...the raw fuel is dumped into the head of the engine and puts
> >> the
> >> fire out.
> >>
> >> Troy
> >> ----- Original Message ----- 
> >> From: "Bob Kane" <getterflash at yahoo.com>
> >> To: <nsrca-discussion at lists.nsrca.org>
> >> Sent: Monday, May 01, 2006 10:50 AM
> >> Subject: [NSRCA-discussion] YS 140DZ tuning question
> >>
> >>
> >>> You may have seen my previous post about replacement
> >>> landing gear for my Temptation which were broken by a
> >>> "landing" in a farmers field after an untimely
> >>> deadstick.
> >>>
> >>> I could use some DZ tuning guidance. I'm pretty good
> >>> at setting up the FZ/L series, but this experience
> >>> does not help much with the DZ.  The deadstick occured
> >>> on a downline after testing the vertical performance.
> >>> I pulled the plane vertical and rolled on the throtle,
> >>> it rocketed straight up. Satisfied with the ample
> >>> vertical performance, I rolled the throttle back and
> >>> did a sloppy wingover to get the plane pointed back
> >>> down. I pulled back to horizontal and rolled the
> >>> throtle up to about 1/2 and watched in shock as the
> >>> prop slowed and stopped. You know the rest of this
> >>> story.
> >>>
> >>> Is this a symptom of too rich, too lean, bad plug or?
> >>> The needle was open 1 5/8 turns, which seemd to be
> >>> good on the ground. I was running PowerMaster 20% DZ
> >>> blend, Mejzlik 16X12 prop, OS F plug. The tank is on
> >>> the CG, YS foam clunk, no header tank. The vent line
> >>> has a check valve to keep fuel from leaking out.  My
> >>> plan right now is to bench run the engine to see if I
> >>> can figure out the needle sweet spot, but I know
> >>> performance in the air can vary. Any help is
> >>> appreciated.
> >>>
> >>> Bob Kane
> >>> getterflash at yahoo.com
> >>>
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