[NSRCA-discussion] JR servo question

[John Pavlick]

Yeah, that sounds like what I remember hearing about but I couldn't remember exactly which servos behaved that way. I think my problem may just be a worn pot as a few guys have suggested. As long as I know there's not something going on with this specific servo (as was the case with your 8411's) I'll just have it rebuilt. I replaced it with a spare servo for now and everything is working fine again. Hoping for some good weather on Sunday so I can get some practice time in.

John Pavlick
http://www.idseng.com
  ----- Original Message ----- 
  From: JonLowe at aol.com 
  To: nsrca-discussion at lists.nsrca.org 
  Sent: Thursday, April 26, 2007 11:35 PM
  Subject: Re: [NSRCA-discussion] JR servo question


  In a message dated 4/26/2007 8:10:39 PM Central Daylight Time, jpavlick at idseng.com writes:
    Since I'm a Futaba user, I'll try to be nice about this. <VBG> I have an airplane set up with JR servos and I'm experiencing the classic "oscillating rudder" issue. There's a JR 8311 servo on the rudder and the cables aren't excessively tight. I remember hearing about this a while ago but I can't remember the solution. Any help would be appreciated.

    John Pavlick
  John,
  I don't know about 8311s, but I've had two 8411s do it, one brand new.  Some suggested an oring around the two pull pull cables, to apply a very slight drag..  I cured mine by going to an 8611.  Something in the 8411s is too tight in the feedback loop I guess.

  Jon Lowe






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