REFLECTOR: Stick Force

Ken C. Baker kenb at velocityaircraft.com
Tue Dec 18 17:36:13 CST 2007


Joe,

Scott Swing has developed an alternative trim spring configuration  
that solves the "radio clearance dilemma."

The new trim spring is slightly more progressive in its K-Factor,  
which is nice - but it was specifically designed to have the smallest  
possible "footprint" intruding into rear panel space.

I don't have any pictures or dimensions here at home, but if you're  
interested, I can put something together for you when I get into the  
office tomorrow to see if it will work for your setup.

-Ken Baker
kenb at velocityaircraft.com

On Dec 18, 2007, at 6:10 PM, "Joe Ewen" <Jewen at comporium.net> wrote:

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> All,
> Thanks for the feedback on the topic, it is appreciated.
>
> Al,
> I would certainly appreciate any measurements you can make.
>
> Thanks,
> Joe
>
>
>  ----- Original Message -----=20
>  From: Al Gietzen=20
>  To: 'Velocity Aircraft Owners and Builders list'=20
>  Sent: Tuesday, December 18, 2007 11:30 AM
>  Subject: Re: REFLECTOR: Stick Force
>
>
>  Subject: REFLECTOR: Stick Force
>
>
>
>  Has anyone measured the force on the control stick in flight?  If  
> not =
> does anyone have an estimate on the force the trim spring applies or  
> the =
> force required to make a control deflection.  I can not use the  
> factory =
> trim spring, there is no room left behind the panel for it.  I think  
> I =
> have a concept that will work, I just need to calculate the spring  
> force =
> and rate.  All help is appreciated.
>
>  Thanks,
>
>  Joe
>
>  Joe;
>
>
>
>  I'll be at the airport sometime in the next few days, and can get  
> an =
> approximate measurement on my plane for you if that would still be =
> useful.  I narrowed the original factory spring to reduce the force  
> to =
> make it possible to get near full deflection in one direction while  
> the =
> trim motor was run to the extreme in the opposite direction.   
> Basically =
> the idea is that if the motor ran to full down trim (elevator up)  
> for =
> whatever reason (such a case has been reported here), it would still  
> be =


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