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Castellated Nuts.
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bryanmmartin

Joined: 10 Jan 2006
Posts: 1018

Posted: Wed Apr 23, 2008 4:29 pm Post subject: Castellated Nuts.

Seat belts aren't safety of flight items, control cable connections are.



Afterfxllc(at)aol.com wrote:

 	  Quote: 	
		   Guys you don't use a castle nut on your seat belt attach or the canopy bolt  

 or a number of other places that you don't tighten the nut ...


	


-- 

Bryan Martin

Zenith 601XL N61BM

Ram Subaru, Stratus redrive

Do Not Archive

_________________
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive.

n801bh(at)netzero.com
Guest

Posted: Wed Apr 23, 2008 5:09 pm Post subject: Castellated Nuts.

Ben Haas

N801BH

www.haaspowerair.com



-- Bryan Martin <bryanmmartin(at)comcast.net> wrote:




[quote]Seat belts aren't safety of flight items, control cable connections are

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Thu Apr 24, 2008 5:22 am Post subject: Re: Castellated Nuts.

They are designed to be "lock nuts" when torqued. When not torqued I'm not sure they are locked. I'm not an engineer and that is one of the reasons I generally follow the advice of the ACs and the designer.



 	  msherman95632(at)yahoo.co wrote: 	
		  Gig.

 

I would have to disagree that a non-torqued lock nut is only slightly less likely to back off.  Your kidding, right.  That is the hole point of having a lock nut, so they don't back off.

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

jmcburney(at)pobox.com
Guest

Posted: Thu Apr 24, 2008 5:49 am Post subject: Castellated Nuts.

If the problem with castellated nuts is cotter pins being worked loose (by

feet or something), I'd suggest using safety wire instead of cotter pins in

the castellated nuts.  Put it through the nut, twist it, run through the

clevis, twist, turn the twist back through the clevis.  Try it, you may like

it.



Blue skies and tailwinds



Jim

CH-801

DeltaHawk diesel

Augusta GA

90% done, 90% left

frankroskind(at)HOTMAIL.C
Guest

Posted: Thu Apr 24, 2008 6:11 am Post subject: Castellated Nuts.

You may hold a repairman's certificate after you build, but if for any reason you are unavailable to perform the condition inspection required annually, the aircraft would have to be inspected by an Airframe and Powerplant rated mechanic.  I, for one, would not risk my certificate on a castellated nut secured by safety wire.

[quote] From: jmcburney(at)pobox.com

 To: zenith-list(at)matronics.com

 Subject: Re: Re: Castellated Nuts.

 Date: Thu, 24 Apr 2008 09:44:54 -0400

 --> Zenith-List message posted by: "Jim McBurney" <jmcburney(at)pobox.com>

 If the problem with castellated nuts is cotter pins being worked loose (by

 feet or something), I'd suggest using safety wire instead of cotter pins in

 the castellated nuts. Put it through the nut, twist it, run through the

 clevis, twist, turn the twist back through the clevis. Try it, you may like

 it.

 Blue skies and tailwinds

 Jim

 CH-801

 DeltaHawk diesel

 Augusta GA

 90% done, 90% left

========================> 

In a rush? Get real-time answers with Windows Live Messenger.   	  Quote: 	
		  [b]

nyterminat(at)aol.com
Guest

Posted: Thu Apr 24, 2008 7:35 am Post subject: Castellated Nuts.

Just use a bushing as suggested before and torque your nylon lock nut!!!!!!

 Bob Spudis

   	  Quote: 	
		   	  Quote: 	
		  --> Zenith-List message posted by: "Gig Giacona" <wr.giacona(at)suddenlink.net (wr.giacona(at)suddenlink.net)>



They are designed to be "lock nuts" when torqued. When not torqued I'm not sure 

they are locked. I'm not an engineer and that is one of the reasons I generally 

follow the advice of the ACs and the designer.

msherman95632(at)yahoo.co wrote:

 	  Quote: 	
		   Gig.

  

 I would have to disagree that a non-torqued lock nut is only slightly less 

likely to back off.  Your kidding, right.  That is the hole point of having a 
	


lock nut, so they don't back off.  

 	  Quote: 	
		    


	


	
	


 

 

 --

ggower_99(at)yahoo.com
Guest

Posted: Thu Apr 24, 2008 10:13 am Post subject: Castellated Nuts.

In our 701  in the left Rudder pedal  (with my best english)  we broked twice the outer wire from the pin...  The pin did not came off in either two of the events (was hold by the remaining wire.  The first time we just changed the pin (in the prefight) and that was it.  

   

  The second time the wire of the pin broked (rubbing with the shoe, I think)  we chosed to put a safety wire, it went inside the hole of the bolt and around the two strips and twisted in the back.   Has worked perfectly (40 hrs to date since the change).

   

  I think the material of the safety wire will resisit the job in this particular bolts.

   

  Probably a photo is better, but until next sunday or monday.

   

  Saludos

  Gary Gower

  701 912S    (about 150 hrs) Cant remember  exactly. 

   

  

Afterfxllc(at)aol.com wrote:

  [quote]      I know the regs but in the case of the foot pedal cables you can snag the pin with your shoe or pants and work it loose and when it rotates the pin can fall out allowing the nut to back off. Van's has about the same set up for the rudder cables and after a few pins came out they advised NOT to us castle nuts in that situation.

   

  43-13 says that castle nut and cotter pins be used whenever the fitting is subject to rotation.

  [quote]   

  Steven Bornstein

475 E. North Broadway

Columbus, Ohio 43214

614 263-5819    

    In a message dated 4/23/2008 3:16:17 P.M. Eastern Daylight Time, amyvega2005(at)earthlink.net writes:

  [quote]--> Zenith-List message posted by: Juan Vega <amyvega2005(at)earthlink.net>



not smart to NOT use castlenuts where there is motion, the motion could back out a noncastle nut.  CAstle nuts need to be used where the is motion directly on the  nut.  such as the stering rods, control horns, etc. with the correct attachements of cotter pins there would not be problems with pins coming undone.



Juan



--

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Thu Apr 24, 2008 10:59 am Post subject: Re: Castellated Nuts.

Good a licenced A&P. Would you OK a lock nut in the same position?

 	  frankroskind(at)HOTMAIL.C wrote: 	
		  You may hold a repairman's certificate after you build, but if for any reason you are unavailable to perform the condition inspection required annually, the aircraft would have to be inspected by an Airframe and Powerplant rated mechanic.  I, for one, would not risk my certificate on a castellated nut secured by safety wire.

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

gfmjr_20(at)HOTMAIL.COM
Guest

Posted: Thu Apr 24, 2008 11:10 am Post subject: Castellated Nuts.

Since this thread is still continuing, let me add one more suggestion. There are self-locking castle nuts available from AS. They are number MS17825. I used them on my alieron cable connections at control pivot.

  

 George May

 601XL 912s



  	  Quote: 	
		    From: frankroskind(at)HOTMAIL.COM

To: zenith-list(at)matronics.com

Subject: RE: Re: Castellated Nuts.

Date: Thu, 24 Apr 2008 10:07:58 -0400



   .ExternalClass .EC_hmmessage P {padding:0px;} .ExternalClass body.EC_hmmessage {font-size:10pt;font-family:Tahoma;}  You may hold a repairman's certificate after you build, but if for any reason you are unavailable to perform the condition inspection required annually, the aircraft would have to be inspected by an Airframe and Powerplant rated mechanic.  I, for one, would not risk my certificate on a castellated nut secured by safety wire.



 	  Quote: 	
		   From: jmcburney(at)pobox.com

 To: zenith-list(at)matronics.com

 Subject: Re: Re: Castellated Nuts.

 Date: Thu, 24 Apr 2008 09:44:54 -0400

 

 --> Zenith-List message posted by: "Jim McBurney" <jmcburney(at)pobox.com>

 

 If the problem with castellated nuts is cotter pins being worked loose (by

 feet or something), I'd suggest using safety wire instead of cotter pins in

 the castellated nuts. Put it through the nut, twist it, run through the

 clevis, twist, turn the twist back through the clevis. Try it, you may like

 it.

 

 Blue skies and tailwinds

 

 Jim

 CH-801

 DeltaHawk diesel

 Augusta GA

 90% done, 90% left

 

========================


	


 	  Quote: 	
		   

 

 


	


  In a rush? Get real-time answers with Windows Live Messenger.  	  Quote: 	
		  



arget=_blank>http://www.matronics.com/Navigator?Zenith-List

p://forums.matronics.com

blank>http://www.matronics.com/contribution



	
	
In a rush? Get real-time answers with Windows Live Messenger.  [quote][b]

frankroskind(at)HOTMAIL.C
Guest

Posted: Thu Apr 24, 2008 11:14 am Post subject: Castellated Nuts.

No



[quote] Subject: Re: Castellated Nuts.

 From: wr.giacona(at)suddenlink.net

 Date: Thu, 24 Apr 2008 11:59:01 -0700

 To: zenith-list(at)matronics.com

 

 --> Zenith-List message posted by: "Gig Giacona" <wr.giacona(at)suddenlink.net>

 

 Good a licenced A&P. Would you OK a lock nut in the same position?

 

 

 

 frankroskind(at)HOTMAIL.C wrote:

 > You may hold a repairman's certificate after you build, but if for any reason you are unavailable to perform the condition inspection required annually, the aircraft would have to be inspected by an Airframe and Powerplant rated mechanic. I, for one, would not risk my certificate on a castellated nut secured by safety wire.

 

 

 --------

 W.R. &quot;Gig&quot; Giacona

 601XL Under Construction

 See my progress at www.peoamerica.net/N601WR

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=178992#178992

 

 

 > 

 

 

Spell a grand slam in this game where word skill meets World Series. Get in the game.   	  Quote: 	
		  [b]

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Thu Apr 24, 2008 12:34 pm Post subject: Re: Castellated Nuts.

I didn't know they made those. That sounds like the best solution.



Thanks George.

 	  gfmjr_20(at)HOTMAIL.COM wrote: 	
		  Since this thread is still continuing, let me add one more suggestion. There are self-locking castle nuts available from AS. They are number MS17825. I used them on my alieron cable connections at control pivot.

  

 George May

 601XL 912s

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

planecrazydld(at)yahoo.co
Guest

Posted: Thu Apr 24, 2008 1:51 pm Post subject: Castellated Nuts.

also, cotterpins becoming undone if installed correctly can usually be managed by reversing the direction of insertion of the bolt to result in the nut/cotterpin on the side away from the dragging interface.



Juan Vega <amyvega2005(at)earthlink.net> wrote:[quote] --> Zenith-List message posted by: Juan Vega 



not smart to NOT use castlenuts where there is motion, the motion could back out a noncastle nut.  CAstle nuts need to be used where the is motion directly on the nut.  such as the stering rods, control horns, etc. with the correct attachements of cotter pins there would not be problems with pins coming undone.



Juan



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