YS 140DZ fault?

[T&C Brown]

MessageGlad to hear you got it going.....This is the first I've heard of the pump problem.  Anybody else had or have heard of this problem?

Terrance

  ----- Original Message ----- 
  From: Peter Pennisi 
  To: discussion at nsrca.org 
  Sent: Wednesday, April 23, 2003 7:16 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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