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aileron slop

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jonboede(at)hotmail.com
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Posted: Fri Feb 23, 2007 1:08 am Post subject: aileron slop

If you "clamp" one aileron from moving and then wiggle the other one, how 

much movement is "ok" before you should consider getting new links?



I have determined that all the slop is being allowed in the last linkage to 

the aileron.  When I hold one and move the other I can jiggle it about 

3/16ths of an inch.  Makes me a little nervous.



Jon

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dsavarese(at)elmore.rr.co
Guest

Posted: Fri Feb 23, 2007 5:39 am Post subject: aileron slop

Jon,

IMHO, no slop is acceptable.  The slop you've identified may be caused by a 

damaged bearing either on one of the bellcranks or at the aileron itself. 

Many of the bearings are self aligning bearings and if not properly 

maintained over the years (pre Jon Boede), especially the ones exposed to 

the elements, can literally fall apart.  Dirt and grit are a bearing's worst 

enemy.  If it were my airplane, I would confirm the cause of the slop and 

correct it immediately.

Dennis



---

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rvfltd(at)televar.com
Guest

Posted: Fri Feb 23, 2007 9:02 am Post subject: aileron slop

Jon,

Slop in the ailerons can come from three places.  One or more pivot 

bearings on the ail are totally gutted, OR the bearing in the end plate 

on the inbd end of the aileron is loose (This can jamb the ailerons in 

flight if it comes loose), OR your aileron links are shot, which is my 

guess.  The aileron links H2-5316-00 (actually called #7 pull rod in the 

parts book) have 2 bearings in each of them.  There are however two 

types of aileron links, thin (for earlier CJ's, and thick for the later 

CJ's.  The bearings can wear out rather rapidly if your aileron stop 

bolts are not properly adjusted or the rubber tips are crushed or 

missing.  The stop bolts are the little bolts which have rubber tips on 

them, there is one on each side of the stick in the front cockpit, they 

have a lock nut on them, this is where you adjust/limit the travel of 

the aileron.  There are also stop bolts on the rudder peddles which 

limit the travel of the rudder .  It takes a while but not using your 

gust locks also tends to help destroy the rubber tips on the stop bolts 

when the ailerons bang in the wind.  I do not know of any published 

"slop tolerances" that are acceptable in either the ailerons or the 

rudder.   That's not saying that  your going to fall out of the sky if 

you don't fix the problem immediately, but this condition should not go 

long without someone taking a very serious look at where the slop is 

actually coming from.



Hope all this helps,



Always Yakin,

Doug Sapp



Jon Boede wrote:



 	  Quote: 	
		   



 If you "clamp" one aileron from moving and then wiggle the other one, 

 how much movement is "ok" before you should consider getting new links?



 I have determined that all the slop is being allowed in the last 

 linkage to the aileron.  When I hold one and move the other I can 

 jiggle it about 3/16ths of an inch.  Makes me a little nervous.



 Jon

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cpayne(at)joimail.com
Guest

Posted: Fri Feb 23, 2007 5:49 pm Post subject: aileron slop

Doug wrote:

 >

 > It takes a while but not using your 

 	  Quote: 	
		   gust locks also tends to help destroy the rubber tips on the stop bolts 

 when the ailerons bang in the wind.

 >

 Exactly! That's why I made up industrial strength gust locks that relieve the strain from the control system. Helps me to sleep at night when "baby" is on the tiedown. I'm such a firm believer that I now offer these gust locks for sale. The stuff you buy from Spruce or Sporty's only concentrates loads on a small area of each control surface; little comfort from wind or snow/ice loads when outside.

 I even put them on when parked in group hangers. I've seen more damage to my airplanes in group hangers than I have on tiedowns.

 Once I saw what the propwash from a DC-3 did to a C-175 owned by a friend, nasty damage on the empennage. He used the yoke pin type lock that did nothing to protect the actual surfaces or cable system.

 Craig Payne

 cpayne(at)joimail.com (cpayne(at)joimail.com)

  [quote][b]

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