[NSRCA-discussion] YS 140DZ tuning question

[Troy A. Newman]

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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>