Using check valve in YS 140DZ fuel system

[tony at radiosouthrc.com]

Ed:

Most of the uses of the check valve are in the injection line going to the head.  This will also prevent the line from going empty during idle maneuvers, and giving a hesitation during throttle up, like at the bottom of an outside loop.  I have installed one earlier this year, and it did seem to help this issue.  


Tony Stillman
Radio South
3702 N. Pace Blvd.
Pensacola, FL 32505
1-800-962-7802
www.radiosouthrc.com
  ----- Original Message ----- 
  From: Ed Deaver 
  To: discussion at nsrca.org 
  Sent: Monday, August 30, 2004 2:06 PM
  Subject: Re: Using check valve in YS 140DZ fuel system


  I've used the check valve in the vent line from day one without any problems.  Have never noticed any pressure buildup at all in the tank.

  ed

  Peter Pennisi <pentagon.systems at bigpond.com> wrote:


    Some flying buddies of mine have been having a discussion about using a
    check-valve in the fuel system to essentially stop fuel from dripping out of
    the vent line. I have been using this system without any problems that I
    know off for some time. One of the pattern flyers I fly with is very good
    with engines and he doesn't think it is a very good idea to use the valve in
    the DZ fuel system as the tank will always have a slight pressure build up
    inside which may result in inconsistent engine runs. I don't know about his
    theory but I do know that all the Japanese flyers at the recent CAOCC event
    were using check valves in the fuel system.

    I would be interested to hear from anyone who may have an opinion on this
    subject.


    Regards,

    Peter


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