[NSRCA-discussion] Rudder pull-pull

[Lance Van Nostrand]

Bob,

In my imagination, I see what you are saying and agree.  This could be equal 
to the wheel in neat little tricks.
Thanks,
--Lance

----- Original Message ----- 
From: "Bob Richards" <bob at toprudder.com>
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
Sent: Monday, May 12, 2008 6:08 AM
Subject: Re: [NSRCA-discussion] Rudder pull-pull


> --- On Sun, 5/11/08, Lance Van Nostrand <patterndude at tx.rr.com> wrote:
>> If you use a shorter servo arm and more servo
>> throw the cables will go slack.  The round servo wheel is a
>> compromise by offsetting this slack tendency and letting you
>> get more servo throw.  It's not a perfect match but it
>> can be very close.
>
> It is possible to adjust the geometry so the cables will actually go 
> tighter at the servo is deflected. Simply move the attachment points on 
> the servo arm rearward, so they are slightly behind the center axis.
>
>> Anyone that can do the math on this and present a complete
>> answer can get a recommendation to advance from a shade
>> tree aerodynamicist to an apprentice.
>
> :-) IMHO, empirical data trumps math and theory. According to the math, 
> bumble-bees can't fly.
>
> Bob R.
>
>
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