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Rudder cable tension.

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ggower_99(at)yahoo.com
Guest

Posted: Fri Oct 23, 2009 12:26 pm Post subject: Rudder cable tension.

Hello Ernest,

  

 Had the same thoughts as you about the pulleys, so I just used the "good enough" tension gauge built in my hands...      Just at the moment the rudder looked firm when I tried the play...  Also check (while adjusting the tension) that the front wheel is straight when the rudder is centered.

  

 Hope this helps.



 Saludos

 Gary Gower.

  

 

--- On Fri, 10/23/09, ejessee <eejessee(at)us.ibm.com> wrote:



 [quote]

From: ejessee <eejessee(at)us.ibm.com>

Subject: Rudder cable tension

To: zenith701801-list(at)matronics.com

Date: Friday, October 23, 2009, 3:29 PM



 --> Zenith701801-List message posted by: "ejessee" <eejessee(at)us.ibm.com (eejessee(at)us.ibm.com)>



I'm full of questions as I begin re-assembly after paint.  Thanks for your patience.



Even before painting, I felt that my rudder cables might need to be tightened.  I have searched the forum.  I found plans for a tension guage:  

http://forums.matronics.com/viewtopic.php?t=55022&highlight=rudder+cable



However, I would have expected that even 10 lbs might be too much for the pullies that the cables go through as they turn up toward the tail from level with the floor.



Any pointers on setting this tension.  Do I need to build this tension gage and if so, what is correct  tension?  I have all the drawings, but have not located any guidance on setting that tension.



--------

Ernest Jessee

N4931M





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=269139#269139

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dashwood

Joined: 24 Jan 2009
Posts: 73
Location: sw ontario canada

Posted: Sun Oct 25, 2009 8:16 pm Post subject: Re: Rudder cable tension.

you will find that as you tighten the elevator cables tight to too tight you will get binding and resistance from full right aileron, needs to be set to best feel kind of setting with the bungie installed  to stop cables chafing together.. i had some severe yaw issues with my rudder as purchased from the builder. turned out to have the lower piece missing in the rudder(lower forward rudder rib 7r1-6. ) which caused deformation of the front half skin and spar. in some conditions the rudder was searching to full stops from side to side.  new rudder installed and also put tension springs along the cables at the rudder peddles. stopped the yaw / wondering . there are also some posts on the yahoo groups 701 builders site of some spring mods and variations to the nose wheel  steering rods. to give more tension and feel to the rudder.



http://groups.yahoo.com/group/701builders/



reprint from zl1tbg" <sanson> 

zl1tbg Re: 701 Front wheel / Rudder / Oilcanning 

"The rudder cables should always be tight in flight, when the nosewheel

bungee is not compressed. On the ground, the more compressed the bungee

the slacker the cables go because of the sliding connection to the

nosewheel steering. Must adjust tension tight when nosewheel is off the

ground."

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_________________
Ross Alexander: CH701 driver 912ul 788tt
It only takes two things to fly, airspeed and money

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