elevator servo torque

[David Lockhart]

elevator servo torqueWayne,

The 9411sa would be fine.  Swapping the final output gear from metal to nylon with save almost a 1/2 oz total for 3 servos.

Run an unregulated 5cell pack (~1oz more than a 4cell pack) and you will have about 20% more torque and speed.  Or, just bump up the output on your voltage regulator to 6.3v if going that route.

Regards,

Dave Lockhart, Team JR
DaveL322 at comcast.net

  ----- Original Message ----- 
  From: Wayne at Bolly Props 
  To: discussion at nsrca.org 
  Sent: Saturday, January 08, 2005 11:06 AM
  Subject: elevator servo torque


  I'm trying to figure out the amount of torque required for my elevator servo (single, in a pull-pull system).  I'm doing an electric Impact and trying to save as much weight as I can.  I'm considering either the DS8411SA or the DS9411SA.  Not sure if the 82 oz/in of the 9411 will be enough?  Savings of .7oz (every little bit helps) times 2 aileron and one elevator servo makes it worth while.

  There used to be a site on the net that showed a way to calculate the required torque, however I can't find it.

  Any first hand experience or good theories welcome!

  Wayne P.


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