[NSRCA-discussion] servo support

Dave Burton burtona at bellsouth.net
Sun Jan 14 08:00:38 AKST 2007


Servo support devices.
Sounds like a solution in dire need of a problem!
  -----Original Message-----
  From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Lance Van
Nostrand
  Sent: Sunday, January 14, 2007 11:47 AM
  To: NSRCA Mailing List
  Subject: Re: [NSRCA-discussion] servo support


  Sorry, but I have to question this.  I don't see how this can work well.
It is very pretty and has all the right materials (ball bearings, carbon
fiber), but from a geometric point of view it raises many questions.  The
carbon base is cantilevered to the aluminum standoffs and the mounting screw
line is normal to the load, doing nothing to support the load.  The
standoffs put pressure on the CF base ina point load, something CF is poor
at withstanding.  THe geometric stability is provided only by the aluminum
standoff diameter, which is minimal.

  The old JR ones worked, but barely.  The base was a full metal frame,
which improved the standoff cantilever problem.  As long as the metal frames
were straight and the aluminum standoffs were tightly screwed in and any
bending was prevented (once bent they never worked right again).

  Granted, these can be installed but whether or not they relieve the stress
on the servo is a totally different matter.  A design that I would believe
in would increase the base of the standoffs.  One way would be to use the MK
fluted control arms.  Another would be to make a triangular standoff with
the base wide at the bottom and lined up with the servo stress.

  -Lance
    ----- Original Message -----
    From: george w. kennie
    To: NSRCA Mailing List
    Sent: Saturday, January 13, 2007 9:42 PM
    Subject: Re: [NSRCA-discussion] servo support


    Boy, that looks even more positive than the JR type that I've been using
for years. Good stuff Rex !
    G.



      ----- Original Message -----
      From: Rex LESHER
      To: NSRCA Mailing List
      Sent: Saturday, January 13, 2007 6:05 PM
      Subject: Re: [NSRCA-discussion] servo support


      Here's two more, of a different variety....   one for Futaba, one for
JR servos.
      http://www.ronlund.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=he
li&Product_Code=4DRCF  for Futaba servos....

      http://www.ronlund.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=he
li&Product_Code=4DRCJ   for JR servos....

      These are a little different, but they have lots of neat parts on
them...   If the standard JR support has changed and did away with the
      metal frame, these might be better for our use....

      Rex


        ----- Original Message -----
        From: JFGREEN
        To: 'NSRCA Mailing List'
        Sent: Saturday, January 13, 2007 2:45 PM
        Subject: [NSRCA-discussion] servo support


        Does anyone know anyone other  than Horizon that might carry the KS
servo support.  Horizon is out of them – Jerry green



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