REFLECTOR: [SPAM] Re: Pitch trim

[Scott Baker]

The linear actuator that powers the pitch trim should react instantly to the application of power (forward or back).
The bolts and mounting connections between the pitch trim servo, pitch trim spring, and elevator should have no slack.
The elevators should have complete freedom of movement - no binding at the hinges, no binding at the canard wing tips, no binding against the fuselage sides, and no binding on the underside of the canard.
The bottom line ... during ground test ops, there should be little to no lag between when the pitch trim command switch is pressed - to when motion is observed in the pitch trim actuator.
Is the pitch trim system hooked up through a relay?  Is everything okay there (i.e. it's not a relay with a time delay)?

SB

  ----- Original Message ----- 
  From: Christopher Barber 
  To: Velocity Aircraft Owners and Builders list 
  Sent: Tuesday, June 19, 2007 12:15 AM
  Subject: [SPAM] Re: REFLECTOR: Pitch trim


  3 seconds, maybe more.  I will try to remember to time it on the morrow (or even tomorrow <g>).  I hope to spend the day at the hangar.  Thanks.

  All the best,

  Chris
    ----- Original Message ----- 
    From: Darrell & Nora Kufalk 
    To: 'Velocity Aircraft Owners and Builders list' 
    Sent: Monday, June 18, 2007 10:31 PM
    Subject: Re: REFLECTOR: Pitch trim


    Chris,



    Define "considerable".  ½ second?  3 seconds?  My elevator moves up or down the instant (less than a ½ second) I press the button.



    Darrell









    -----Original Message-----
    From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Christopher Barber
    Sent: Monday, June 18, 2007 10:00 PM
    To: Velocity Aircraft Owners and Builders list
    Subject: REFLECTOR: Pitch trim



    I wired up the pitch trim tonight and noticed there is considerable lag between when I activate the swith/motor and the trim spring/elevator actually start moving.  Is this normal?  Is there a way to adjust this.  What, praytell, am I missing this time.  Thanks.



    All the best,



    Chris



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