REFLECTOR: Ignition Noise

Ron Brown romott at roadrunner.com
Mon Jun 11 12:37:21 CDT 2007


MessageActually, I have been chasing a spark noise in my Garmin 430 for a several weeks.  It is only coming in the 430, it goes away when I turn off the Jeff Rose Electroair electronic ignition, it changes frequency with engine RPM, it does not come in to the #2 com which is a lowly Microair 760, it does not make noise if the antenna is disconnected from the 430.  Arrrggghhh!

I have changed antennas from right to left, used a portable antenna, bought new plugs and plug  wires, connected the 430 to a separate battery, swapped 430's with a friend, removed ground wires, cleaned and retightened them, installed noise filters on the 430 and Electroair, removed and inspected new plugs and new wires.  Next I am going to remove the timing unit from the distributor hole, spin the unit and see if I can hear sparks, then try  replace one high energy coil at a time.   

We are planning to fly to Colorado next week and I sure would like to NOT hear sparking noises when I am receiving a far away aircraft or ATC.

Any other suggestions from the collective???
Ronnie

  ----- Original Message ----- 
  From: Chuck Jensen 
  To: Velocity Aircraft Owners and Builders list 
  Sent: Monday, June 11, 2007 1:11 PM
  Subject: Re: REFLECTOR: elevator cuff was Brake authority


  Ron,

  Thanks for the cuff description, I can visualize what you were describing but since I don't have any, I was just curious.  I was suffering from cuff-envy until I realized it was fashionable not to have 'em.

  P.S.  Nice looking paint and trim job on the bird.  Now that its all painted up, I'm surprised you haven't found anything that you want to change!

  Chuck Jensen 

   -----Original Message-----
  From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Ron Brown
  Sent: Monday, June 11, 2007 10:41 AM
  To: Velocity Aircraft Owners and Builders list
  Subject: Re: REFLECTOR: elevator cuff was Brake authority


  Chuck,

  Don't have a picture - but I can describe them.  It was a C shaped piece that was installed on the leading edge of the Elevator - which reduces the gap between the back of the canard and the elevator such that when the elevator is down, the gap is reduced from what it would be if the cuff wasn't there.

  It was installed on the inner half, span wise of the elevator.

  Ronnie   
    ----- Original Message ----- 
    From: Chuck Jensen 
    To: Velocity Aircraft Owners and Builders list 
    Sent: Monday, June 11, 2007 10:10 AM
    Subject: Re: REFLECTOR: elevator cuff was Brake authority


    Does anyone have a photo of the "cuffs" that are being discussed.  I'm not sure I've ever seen the cuffs on the Velo.  You're welcome to email directly.

    Chuck Jensen 

     -----Original Message-----
    From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Laurence Coen
    Sent: Friday, June 08, 2007 12:39 PM
    To: Velocity Aircraft Owners and Builders list
    Subject: Re: REFLECTOR: elevator cuff was Brake authority


    Al,

    The way I understand it, the elevator cuffs were one of three things done to address the deep stall problem.  Your current main wing was redesigned and the canard was shortened.  The cuffs are no longer needed.  They were a modification for existing Velocities at that time.  I received cuffs with my kit but never installed them.  Their purpose is to increase the stall speed of the elevator which would explain your high stall speed.

    Larry Coen
    N136LC
      ----- Original Message ----- 
      From: Al Gietzen 
      To: 'Velocity Aircraft Owners and Builders list' 
      Sent: Thursday, June 07, 2007 11:34 AM
      Subject: Re: REFLECTOR: Brake authority




      I concur with Larry - 10KIAS makes a big difference.

      My canard stalls at 60KIAS with just me, 65KIAS with

      two people up front.



      I still have about half the width of the elevator cuff on the elevators. It gives a very gentle pitch-buck at stall, I've never felt a lack of elevator authority; and I never have full aft stick on landing.  However; would removing the rest of the cuff reduce the stall speed?



      I have my ground idle set to about 500 RPMs (Lyc

      IO-540 with two mags) which is pretty much as slow as

      it will run



      My engine idle is about 850; that's about 210 rpm on the prop.



      Al



--------------------------------------------------------------------------


      _______________________________________________
      To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

      Visit the gallery!  www.tvbf.org/gallery
      user:pw       Check new archives: www.tvbf.org/pipermail
      Check old archives: http://www.tvbf.org/archives/velocity/maillist.html


----------------------------------------------------------------------------


    _______________________________________________
    To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

    Visit the gallery!  www.tvbf.org/gallery
    user:pw     Check new archives: www.tvbf.org/pipermail
    Check old archives: http://www.tvbf.org/archives/velocity/maillist.html


------------------------------------------------------------------------------


  _______________________________________________
  To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

  Visit the gallery!  www.tvbf.org/gallery
  user:pw   Check new archives: www.tvbf.org/pipermail
  Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tvbf.org/mailman/private/reflector/attachments/20070611/59393d3a/attachment-0001.html 


More information about the Reflector mailing list