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elevator control horn drilling

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MauleDriver(at)nc.rr.com
Guest

Posted: Sun Feb 18, 2007 1:26 pm Post subject: elevator control horn drilling

John (or anyone), what was Vans final advice regarding this situation?  

I may be facing a similar situation with reduced material between the 

hole and the end of the horn.



I've searched the forum but can't find additional references.



Thanks

do not archive



John Gonzalez wrote:

 	  Quote: 	
		   

 Hi Richard,



 I just got off the phone with Van's and asked them to have the powers 

 that be review the building manual and make a comment about being 

 careful to respect the up/down dimension of where the drill will exit 

 out of the second hole on the second horn. Not jus tbe concerned about 

 the most aft horn being the designated guide.



 I wanted to ask you the minimum edge distance as you stated, is that 

 in steel or in alluminum?



 I discussed the issue of welding on a plate and  and he did not think 

 that was necessary, there also could be a weakening of the original 

 material at the intersection of the new plate and the horn.



 Just for discussion, (If I could not sleep because of this) he 

 discussed an alternate remedy, riveting another plate of similair 

 material(4130 steel) with say 6 rivets using the same hole, just to 

 extend the gap between the hole edge and the bottom edge of the horn.



 As I have stated, I have 6/32 of material on the bottom edge from hole 

 edge to horn bottom edge, and when this is all torqued down with 

 washers pinching this together I wonder how exposed to stresses this 

 6/32" of material will be.  still need to review the connection, but 

 alteast there are a couple of alternative remedies other than rework



 JOhn G. 409

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indigoonlatigo(at)msn.com
Guest

Posted: Sun Feb 18, 2007 7:46 pm Post subject: elevator control horn drilling

I had the additional requirement of needing to align my counter balance 

arms, my horn hole was slightly less than 90 degrees itrue in all 

dimensions.  I ended doing the plate and riveting it on to the horn.



I"ll send picture tomorrow if you are interested.



JOhn G.

 	  Quote: 	
		  From: MauleDriver <MauleDriver(at)nc.rr.com>

Reply-To: rv10-list(at)matronics.com

To: rv10-list(at)matronics.com

Subject: Re: elevator control horn drilling

Date: Sun, 18 Feb 2007 16:25:58 -0500






John (or anyone), what was Vans final advice regarding this situation?  I 

may be facing a similar situation with reduced material between the hole 

and the end of the horn.



I've searched the forum but can't find additional references.



Thanks

do not archive



John Gonzalez wrote:

>

>Hi Richard,

>

>I just got off the phone with Van's and asked them to have the powers that 

>be review the building manual and make a comment about being careful to 

>respect the up/down dimension of where the drill will exit out of the 

>second hole on the second horn. Not jus tbe concerned about the most aft 

>horn being the designated guide.

>

>I wanted to ask you the minimum edge distance as you stated, is that in 

>steel or in alluminum?

>

>I discussed the issue of welding on a plate and  and he did not think that 

>was necessary, there also could be a weakening of the original material at 

>the intersection of the new plate and the horn.

>

>Just for discussion, (If I could not sleep because of this) he discussed 

>an alternate remedy, riveting another plate of similair material(4130 

>steel) with say 6 rivets using the same hole, just to extend the gap 

>between the hole edge and the bottom edge of the horn.

>

>As I have stated, I have 6/32 of material on the bottom edge from hole 

>edge to horn bottom edge, and when this is all torqued down with washers 

>pinching this together I wonder how exposed to stresses this 6/32" of 

>material will be.  still need to review the connection, but alteast there 

>are a couple of alternative remedies other than rework

>

>JOhn G. 409

- The Matronics RV10-List Email Forum -

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MauleDriver(at)nc.rr.com
Guest

Posted: Wed Feb 21, 2007 10:15 am Post subject: elevator control horn drilling

Thanks for the response John (I missed it at first)



I have 5/32 of hole edge to bottom edge distance - 1/32 less then you.  

Van's Ken suggested welding the hold closed and redrilling.  Sounds 

clean but checking with my EAA Tech Counselor next.  It would seem that 

anyone familiar with welding chromoly (sp) should know if that's 

suitable and should know how to do.  I'm not a welder.



I would very much like to see your pics.



Bill (a bit frustrated by the elevator horns but can see the end of the 

empennage - QB wings and fuse await) Watson

#406

http://www.mykitlog.com/MauleDriver/



John Gonzalez wrote:

 	  Quote: 	
		   



 I had the additional requirement of needing to align my counter 

 balance arms, my horn hole was slightly less than 90 degrees itrue in 

 all dimensions.  I ended doing the plate and riveting it on to the horn.



 I"ll send picture tomorrow if you are interested.



 JOhn G.

> From: MauleDriver <MauleDriver(at)nc.rr.com>

> Reply-To: rv10-list(at)matronics.com

> To: rv10-list(at)matronics.com

> Subject: Re: elevator control horn drilling

> Date: Sun, 18 Feb 2007 16:25:58 -0500

>

> 

>

> John (or anyone), what was Vans final advice regarding this 

> situation?  I may be facing a similar situation with reduced material 

> between the hole and the end of the horn.

>

> I've searched the forum but can't find additional references.

>

> Thanks

> do not archive

>

> John Gonzalez wrote:

>> 

>> <indigoonlatigo(at)msn.com>

>>

>>

>> Hi Richard,

>>

>> I just got off the phone with Van's and asked them to have the 

>> powers that be review the building manual and make a comment about 

>> being careful to respect the up/down dimension of where the drill 

>> will exit out of the second hole on the second horn. Not jus tbe 

>> concerned about the most aft horn being the designated guide.

>>

>> I wanted to ask you the minimum edge distance as you stated, is that 

>> in steel or in alluminum?

>>

>> I discussed the issue of welding on a plate and  and he did not 

>> think that was necessary, there also could be a weakening of the 

>> original material at the intersection of the new plate and the horn.

>>

>> Just for discussion, (If I could not sleep because of this) he 

>> discussed an alternate remedy, riveting another plate of similair 

>> material(4130 steel) with say 6 rivets using the same hole, just to 

>> extend the gap between the hole edge and the bottom edge of the horn.

>>

>> As I have stated, I have 6/32 of material on the bottom edge from 

>> hole edge to horn bottom edge, and when this is all torqued down 

>> with washers pinching this together I wonder how exposed to stresses 

>> this 6/32" of material will be.  still need to review the 

>> connection, but alteast there are a couple of alternative remedies 

>> other than rework

>>

>> JOhn G. 409

>>

>>

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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