[NSRCA-discussion] YS 140DZ tuning question

[adriancwong at earthlink.net]

Troy,

You better hope Jenny is not reading your post.

Adrian

-----Original Message-----
>From: Bob Kane <getterflash at yahoo.com>
>Sent: May 1, 2006 1:40 PM
>To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
>Subject: Re: [NSRCA-discussion] YS 140DZ tuning question
>
>Whew !!  I was worried how to explain to the wife that
>it was to help the engine run better ;)
>
>--- "Troy A. Newman" <troy_newman at msn.com> wrote:
>
>> 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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>
>
>Bob Kane
>getterflash at yahoo.com
>
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