[NSRCA-discussion] Pull-Pull

[Fred Huber]

Tensioner... servo mounted on sliding tray (we should al remember how to do 
that from doing elevons without computer mixing... CF tubes instead of the 
old nyrod on wire inherant slop should dissapear.) with a spring to pull the 
servo in the opposed direction to the pull-pull wires.  (simplest 
mechanicly... not sure if its the lightest)

You could play with the idea...

Run pull-pull back to a free pulley that is pulled by the tensioner spring, 
taking the side load off the servo.  Slightly more complex and adds the 
weight of the pulley, but should reduce servo wear.

If you like having a bellcrank to adjust travel relationshoip between servo 
and pull-pull... mount the bellcrank on the sliding servo tray.


----- Original Message ----- 
From: "Jay Marshall" <lightfoot at sc.rr.com>
To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
Sent: Wednesday, January 10, 2007 9:07 AM
Subject: Re: [NSRCA-discussion] Pull-Pull


> Well then, no logical reason. All, including myself, agree that it works; 
> I
> also use it. It would also seem that if a tensioner is used, as with 
> timing
> belts on a car, that the 
> trim-change-with-temperature-due-to-fuse-expansion
> problem would disappear.
>
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Ron Van 
> Putte
> Sent: Wednesday, January 10, 2007 9:15 AM
> To: NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] Pull-Pull
>
>
> On Jan 10, 2007, at 8:09 AM, Gene Maurice wrote:
>
>> I have been using pull-pull on elevators for 15 years with great
>> success. It
>> is a little more difficult to setup, but once done, it is
>> completely idiot proof.
>
>
> Gene - I'm absolutely sure someone will say, "Well, you should know",
> but not me.  <VBG>
>
> Ron Van Putte
>
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