[NSRCA-discussion] since the list is slooooooow...

[John Pavlick]

Nice. Yeah the other problem with nylon horns and clevis'  is that I haven't been able to find a 4-40 threaded clevis with a nylon pin. Why would I want this? Simple. The metal pin in the clevis wallows out the hole in the control horn and you develop slop. It's OK to use them on pull-pull setups but on a standard push-pull linkage you have to replace the horns frequently or just use the ball bearing stuff.
I like the setup you've shown because the ball links seem to last a long time although I've never used them in this way. Maybe it's worth a try.

John Pavlick
http://www.idseng.com
  ----- Original Message ----- 
  From: J N Hiller 
  To: jpavlick at idseng.com ; General pattern discussion 
  Sent: Wednesday, October 22, 2008 9:34 PM
  Subject: RE: [NSRCA-discussion] since the list is slooooooow...


  Jason I totally agree with John Pavlick regarding aileron connectors with insufficient or excessive offset. The 1/4" offset is too close to the hinge line and most of them have too much clearance for a clevis pin and loosen prematurely. The attached photo shows a clevis I made from a glass filled motor mount to accept a DuBro ball link. I made a couple pair of these and really like them I have a 3/8 offset but 1/2 would probably be better. I also use 8-32 x 2 studs. I sent this to DuBro a year or two ago and understandably they weren't interested in adding it to their line.

  Jim Hiller  

   

   
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