YS 140DZ fixed!

[Chad Northeast]

Message16.5x12W @ 8500
16x13 @ 8400
17x12 @ 8100

30% nitro as well, and more power than I know what to do with :)
  ----- Original Message ----- 
  From: Troy Newman 
  To: discussion at nsrca.org 
  Sent: Wednesday, April 23, 2003 6:35 PM
  Subject: Re: YS 140DZ fixed!


  You are in the ball park RPM wise...I'm turning the 16.5-12W at 8400....peaks out at about 8700...and I'm flying at about 8300-8400....

  that is of course on Cool Power 30% heli pro.....

  TN
    ----- Original Message ----- 
    From: Peter Pennisi 
    To: discussion at nsrca.org 
    Sent: Wednesday, April 23, 2003 5:16 PM
    Subject: RE: YS 140DZ fault?


    The problem is fixed by replacing the whole pump assembly. When I removed the original one the piston or whatever in the pump was seizing. Motor appears to be running OK. There is a small leak I need to investigate.


    What sort of ground RPM are people swinging with this engine. I tached 8500 on a 16x12 APC on 25% heli fuel. (Klotz KL-198 heli glow). 


    Peter Pennisi
    Pentagon Systems
    P.O Box 4280
    Eight Mile Plains
    QLD 4113
    Australia
    Phone:    61+0738414234
    Fax:        61+0738414264
    Mobile:   0408007206
    Email: pentagon.systems at bigpond.com
      -----Original Message-----
      From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On Behalf Of PENNISI Peter
      Sent: Wednesday, 23 April 2003 13:23 PM
      To: 'discussion at nsrca.org'
      Subject: RE: YS 140DZ fault?


      Thanks Terrence,

      A big problem I am having is it wont go to full throttle. At about 1/3 throttle or less it goes lean and stops. How can this be rich. I tried this approach even at 1 1/2 turns out on main needle with the same results. What about the loud metal rattle that is coming from the pump assembly.

      Regards,

      Peter
        -----Original Message-----
        From: T&C Brown [mailto:tncbrown at charter.net]
        Sent: Wednesday, 23 April 2003 1:01 PM
        To: NSRCA
        Subject: Fw: YS 140DZ fault?



        Peter,

        It sounds like your running the engine way too rich.  When I got my first DZ, I set it up the same way, and had the same problem.  You cannot run it like an "L".  If you have adjusted the pump from the factory setting......return it to it's original position and start with the high speed needle at 1 1/8 to 1 1/4 turns out from full closed.  If the motor starts.....let it warm up a minute then advance it to full throttle.  Once at full throttle, slowly  (one or two clicks at a time) turn the needle in to lean it until the RPM drops.  Once you hear the RPM start to drop, richen it back three or so clicks and run it.  I know what your thinking...."It sounds way to lean"  but this is how Richard from YS Performance told me to set it up, and I've had no problems with this.  Once the motor is broke in the high speed needle should be around 3/4 to 1 turn out from full close.  Hope this helps.

        Terrance Brown
        YS Field Rep

           
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