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Sticking yoke



 
 
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  #1  
Old February 20th 06, 05:06 AM posted to rec.aviation.owning
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Default Sticking yoke

When doing steep turns, I noticed that there is a little resistance to pitch
changes on the yoke. It seems it binds a little in the bearing through the
panel. Does anyone have a suggestion for the type of lubricant I could use
on this? Do they make anything for this purpose?


  #2  
Old February 20th 06, 05:29 AM posted to rec.aviation.owning
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Default Sticking yoke

If its really sticking you need to have it looked at. Its not likely a
lube issue, its probably an issue with something mechanical (bell
crank, etc). My Mooney requires 100 hr control tubes lube. When
controls need lube they certainly do not stick, they just feel
"heavier" in general.

-Robert

  #3  
Old February 20th 06, 06:14 AM posted to rec.aviation.owning
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Default Sticking yoke

When doing steep turns, I noticed that there is a little resistance to
pitch changes on the yoke. It seems it binds a little in the bearing
through the panel. Does anyone have a suggestion for the type of lubricant
I could use on this? Do they make anything for this purpose?


A shot of silicone spray on the yoke shafts every 10 - 20 hours will keep
everything nice and loose.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"


  #4  
Old February 20th 06, 04:04 PM posted to rec.aviation.owning
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Default Sticking yoke

Probably don't use an oil based lube. It may cause the bushing in there
to swell. I use a clear synthetic grease, then wipe off excess after
working it around lots. A silicone lube should be okay too.

soxinbox wrote:

When doing steep turns, I noticed that there is a little resistance to pitch
changes on the yoke. It seems it binds a little in the bearing through the
panel. Does anyone have a suggestion for the type of lubricant I could use
on this? Do they make anything for this purpose?



  #5  
Old February 21st 06, 12:17 AM posted to rec.aviation.owning
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Default Sticking yoke

At the risk of disagreeing with Jay, I would not use a silicone spray. The
carrier for the silicone oil has destroyed more plastic than I care to tell.

I used silicone spray on the heater control levers on my car when they
started binding. Worked great, until all of the levers broke off within a
week of each other. Used it on plastic ski boots. Looked great and the snow
didn't stick. I dropped one onto concrete and it shattered into several
pieces.

My control yoke goes through a plastic bushing. Personally, I don't use
silicone spray on anything other than metal. I would try dry graphite, if
the bearing is black, or talcum powder, if the bearing is white and
completely free of oil or grease. If you use the silicone and the shaft
moves through a plastic bearing, spray it on the metal and let the carrier
evaporate before sliding it back and forth.


"Jay Honeck" wrote in message
news:bfcKf.809772$xm3.486405@attbi_s21...
When doing steep turns, I noticed that there is a little resistance to
pitch changes on the yoke. It seems it binds a little in the bearing
through the panel. Does anyone have a suggestion for the type of
lubricant I could use on this? Do they make anything for this purpose?


A shot of silicone spray on the yoke shafts every 10 - 20 hours will keep
everything nice and loose.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"



  #6  
Old February 21st 06, 04:43 AM posted to rec.aviation.owning
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Default Sticking yoke

At the risk of disagreeing with Jay, I would not use a silicone spray.
The carrier for the silicone oil has destroyed more plastic than I care to
tell.


Interesting -- I've never heard that before. Having your yoke come off in
your hands could ruin your whole day.

Anyone else experienced this nasty side effect of silicone sprays?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"


  #7  
Old February 21st 06, 04:55 AM posted to rec.aviation.owning
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Default Sticking yoke

In article t%vKf.811830$xm3.579900@attbi_s21,
"Jay Honeck" wrote:

At the risk of disagreeing with Jay, I would not use a silicone spray.
The carrier for the silicone oil has destroyed more plastic than I care to
tell.


Interesting -- I've never heard that before. Having your yoke come off in
your hands could ruin your whole day.

Anyone else experienced this nasty side effect of silicone sprays?


yes - not with any plastic on an aircraft. But I've seen silicone destroy
some plastic years ago.

--
Bob Noel
Looking for a sig the
lawyers will hate

  #8  
Old February 22nd 06, 12:35 AM posted to rec.aviation.owning
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Default Sticking yoke


"soxinbox" wrote in message
...
When doing steep turns, I noticed that there is a little resistance to
pitch changes on the yoke. It seems it binds a little in the bearing
through the panel. Does anyone have a suggestion for the type of lubricant
I could use on this? Do they make anything for this purpose?


My yoke goes through a plastic-like bushing and the co-pilot side squeaked
like heck. It was loud, sharp and would rattle my teeth. I asked my
mechanic if I could just give it a shot of WD40 or silicone spray. He said
not to use any liquid-like spray. Not because it destroyed plastic, but
because it would attract dirt and get all sticky and gummed up eventually.
He recommended graphite powder.

I tried the graphite and it didn't work. Frustrated, I sprayed WD40 in
there and haven't heard a peep since. I will now have to keep an eye on the
bushing.

Kobra


  #9  
Old February 22nd 06, 12:59 AM posted to rec.aviation.owning
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Default Sticking yoke


soxinbox wrote:
When doing steep turns, I noticed that there is a little resistance to pitch
changes on the yoke. It seems it binds a little in the bearing through the
panel. Does anyone have a suggestion for the type of lubricant I could use
on this? Do they make anything for this purpose?



What sort of airplane is it? Some of the older 172s had a
problem with a bending/breaking panel brace that would let the panel
flex enough that the control shaft bearing would start snagging and
restricting elevator control.
172s also have a problem with cracking forward horizontal stab
spars (caused mostly by people pushing down on the stab to turn the
airplane on the ground when parking or whatever) and I have seen the
spar broken clear through so that only the skin was keeping things
straight. Under higher loadings (such as a steep turn) the stab will
flex downward, misaligning the elevator hinges and making the elevator
stiffer. A really bad sign. Might be a good idea to get it checked, if
it's a 172. Look around the big lightening hole in the stab's forward
spar.
Sticky controls also result when pulley bearings dry out and
the pulley stops (or resists) turning.

Dan

  #10  
Old February 22nd 06, 06:13 AM posted to rec.aviation.owning
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Default Sticking yoke

"Kobra" writes:


I tried the graphite and it didn't work. Frustrated, I sprayed WD40 in
there and haven't heard a peep since. I will now have to keep an eye on the
bushing.



WD40 is a lousy lubricant. It's not supposed to be one...

You can look at the LPS series, there are various grades.
I also have a no-name silicon spray with a KS number,
but doubt you can find it easily...





--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433
 




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