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Control Cable

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John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Thu Nov 30, 2006 7:05 am Post subject: Control Cable

Morning Bob B:



Took the liberty of changing the subject line to something a little 

more appropriate.



Don't know if a dab of grease would help or not.  Probably would, if 

it did not also attract dirt and grit.



Not a big problem, but something to keep you eye on if you put a lot 

of hours on your mkIII.



I can't remember how many times I have changed out the rudder and 

elevator cables over the 2500 hours my mkIII has been flying, but not 

that often.



john h

mkIII

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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Thu Nov 30, 2006 7:21 am Post subject: Control Cable

| Another serious elevator issue that I have seem on some kolbs is 

with

| cable turnbuckles. Where turnbuckles are bolted directly to the

| control horn on the stick sometimes there is not enough  clearance

| for full stick movement in the yoke of the turnbuckle causing the

| yoke of the turnbuckle to bottom out on the horn  causing bending

| side pressure on the stem of the turnbuckle. This condition will

| eventually cause the turnbuckle  to fail. The solution is to file or

| grind the control horn to allow for full stick movement without the

| yoke of the turnbuckle bottoming out on the horn.

|

| Gene



Gene Z:



I have also seen this turn buckle clearance problem on Kolbs.  You are 

absolutely right.  It will eventually cause the turn buckle to fail. 

I remember Old Kolb sending out a supplemental change to grind out 

clearance on a Firestar control stick to prevent this from happening.



Another place that a cable gets bent with a hard side load is the 

forward end of the throttle cable, where it is attached to the clevis. 

If it bends enough it will eventually break.



These are areas that need to be checked and corrected before they 

break.



Thanks for the turn buckle problem.  I had forgotten about that one.



I changed the subject line to reflect what we are discussing.



john h

mkIII

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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

ul15rhb(at)juno.com
Guest

Posted: Thu Nov 30, 2006 10:57 am Post subject: Control Cable

John and all, I've never changed elevator or rudder cables in the 20 

years of flying my Kolb. I've inspected them many times and they are 

still good.



Ralph

Original Firestar

20 years flying it

-- "John Hauck" <jhauck(at)elmore.rr.com> wrote:




 Morning Bob B:



Took the liberty of changing the subject line to something a little 

more appropriate.



Don't know if a dab of grease would help or not.  Probably would, if 

it did not also attract dirt and grit.



Not a big problem, but something to keep you eye on if you put a lot 

of hours on your mkIII.



I can't remember how many times I have changed out the rudder and 

elevator cables over the 2500 hours my mkIII has been flying, but not 

that often.



john h

mkIII 



________________________________________________________________________

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John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Thu Nov 30, 2006 12:58 pm Post subject: Control Cable

| John and all, I've never changed elevator or rudder cables in the 

20

| years of flying my Kolb. I've inspected them many times and they are

| still good.

|

| Ralph



Hi Ralph:



That is great!



Now, how does 20 years flying equate to hours flown?



Flight hours gives us a better idea of how much use/wear has been 

placed on a piece of equipment.  Most Kolb owners don't fly 50 hours a 

year, and many of them do not log their flight time.



Guess you are getting geared up to start flying off the ice.  



john h

mkIII



I change mine out about every 1,000 hours.



john h

mkIII

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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

ul15rhb(at)juno.com
Guest

Posted: Thu Nov 30, 2006 7:07 pm Post subject: Control Cable

John, sorry about not posting the hours. I have 810 hours on the 

Firestar in 20 years. I'm a weekend flyer.



Ralph

Original Firestar

-- "John Hauck" <jhauck(at)elmore.rr.com> wrote:


 | John and all, I've never changed elevator or rudder cables in the 

20

| years of flying my Kolb. I've inspected them many times and they are

| still good.

|

| Ralph



Hi Ralph:



That is great!



Now, how does 20 years flying equate to hours flown?



Flight hours gives us a better idea of how much use/wear has been 

placed on a piece of equipment.  Most Kolb owners don't fly 50 hours a 

year, and many of them do not log their flight time.



Guess you are getting geared up to start flying off the ice.  



john h

mkIII



I change mine out about every 1,000 hours.



john h

mkIII 



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Thom Riddle

Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)

Posted: Fri Dec 01, 2006 6:54 am Post subject: Re: Control Cable

For those of you who do not have your very own AC 43.13, here is a link to the section about aircraft cables. Very informative.



http://www2.tech.purdue.edu/at/courses/at308/Technical_Links/Ac43-13-1B/CH7_8.pdf



Here it is in as a Tiny URL, in case the previous one line wraps.



http://tinyurl.com/ymlu68

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_________________
Thom Riddle
Buffalo, NY (9G0)

Don't worry about old age... it doesn't last very long.
- Anonymous

ul15rhb(at)juno.com
Guest

Posted: Fri Dec 01, 2006 12:32 pm Post subject: Control Cable

I have two nicros at each end of the cable. The ends of the cable are 

just inside the end of the last nicro in the uncompressed part. 

Testing? Is 20 years 810 hours long enough?



I've noticed the cables have stretched. I will replace them in a 

couple of years. There are no broken strands under the pulleys even 

when they are twisted backwards. The cables have lasted a long time 

due to the light load and the small angle around the pulleys.



Ralph

Original Firestar

20 years flying it

-- "Ralph" <ul15rhb(at)juno.com> wrote:




John, sorry about not posting the hours. I have 810 hours on the 

Firestar in 20 years. I'm a weekend flyer.



Ralph

Original Firestar

-- "John Hauck" <jhauck(at)elmore.rr.com> wrote:


 | John and all, I've never changed elevator or rudder cables in the 

20

| years of flying my Kolb. I've inspected them many times and they are

| still good.

|

| Ralph



Hi Ralph:



That is great!



Now, how does 20 years flying equate to hours flown?



Flight hours gives us a better idea of how much use/wear has been 

placed on a piece of equipment.  Most Kolb owners don't fly 50 hours 

a 

year, and many of them do not log their flight time.



Guess you are getting geared up to start flying off the ice.  



john h

mkIII



I change mine out about every 1,000 hours.



john h

mkIII 



______________________________________________________________________

__

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WhiskeyVictor36(at)aol.co
Guest

Posted: Fri Dec 01, 2006 6:33 pm Post subject: Control Cable

In a message dated 12/1/2006 3:35:09 P.M. Eastern Standard Time,  ul15rhb(at)juno.com writes:

  	  Quote: 	
		  Testing?    Is 20 years 810 hours long enough? 	


 

 Hi there Ralph,

  

 I see that you are heeding John Haucks advice and including  testing data now.  hehehe

  

 Bill  Varnes

Original Kolb FireStar

Audubon NJ

Do Not  Archive

  [quote][b]

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