Paul,

  Do you have a source for the spring-loaded teflon buttons used on the
 slide
  throttle?  Also, do you have a drawing for the end piece that secures the
  throttle cable to the slide throttle assembly?

  Thanks,
  Mark S.

  They don't have to be spring loaded.
  A little slop will not hurt.

  Craig bought some
  1/4 teflon rod from McMaster and cut them on a lathe as I recall.
  Drill four 3/16" dia. 3/16" deep holes in the four corners of the slide.

  Paul Lamar


  I used 3/16 solid teflon rod from scientific commodities. No springs.
  trimmed to proper dimension with razor blade after press fit.
  http://www.scicominc.com/teflon_solid_rod.htm
  C. Smith

  CS,
 Correct me if I'm wrong, but aren't you installing these teflon rod pieces
 into aluminum sliders to prevent metal to metal contact?  My 3-rotor slide
 throttle has a teflon slider, so I see no benefit to adding these teflon
 pieces.  But thanks anyway for the excellent link.

 Mark S.

 That is correct.
 You brought it up Mark.

 Now I am beginning to wonder what "spring-loaded teflon
 buttons used on the slide throttle" you are talking about.

 All our slide throttle kits now use thin sheet teflon between
 the front and back covers with a plain aluminum slide.
 The small buttons we are talking about go in the top and bottom
 edges of the slide.

 Paul Lamar

 Paul,

I'm still on the previous design which called for the slide to be made of a
solid piece of teflon.  Not sure why I thought it needed teflon buttons too.
 Obviously it doesn't.  One less step for me in the mfg. process.

Mark S.

I might point out for people the reason we went to the aluminum
slide was the $100 cost of the solid 3/8 thick Teflon material.
This cost is much higher for a 3 rotor due to the length
of the slide.

One can buy it cheaper but the relaxed  thickness tolerance
+/- .018 would force us to surface finish every slide in the NC mill.
It is called mechanical grade PTFE in the Mc Master catalog.

Also Teflon is hard to hold down under these circumstances.

Mark has already discovered this last point as he is
building a long slide three rotor version.

Paul Lamar