[NSRCA-discussion] Pull-Pull

[wgalligan]

Ohhh yah   I forgot about that method.  Good one Bob.

Wayne G

----- Original Message ----- 
From: "Bob Miller" <n444bm at yahoo.com>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Wednesday, January 10, 2007 10:50 AM
Subject: Re: [NSRCA-discussion] Pull-Pull


> I'm using a combination of MK bellcrank that is connected via pull pull to
> the servo.  Works for me.
>
> Bob M.
> ----- Original Message ----- 
> From: "Dave Burton" <burtona at bellsouth.net>
> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> Sent: Wednesday, January 10, 2007 9:23 AM
> Subject: Re: [NSRCA-discussion] Pull-Pull
>
>
>> Maybe I just don't get it, but any kind of tensioner or sliding servo is
>> just going to introduce slack into the rudder or elevator system when
>> under
>> load. Why do you want that? Seems to me you would want the cables as
>> rigid
>> as possible. That's how I've always set them up.
>>
>> -----Original Message-----
>> From: nsrca-discussion-bounces at lists.nsrca.org
>> [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Fred Huber
>> Sent: Wednesday, January 10, 2007 10:19 AM
>> To: NSRCA Mailing List
>> Subject: Re: [NSRCA-discussion] Pull-Pull
>>
>>
>> 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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>>
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