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Instructions for horizontal tail.

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occom

Joined: 26 Aug 2006
Posts: 404

Posted: Mon Oct 22, 2007 12:25 pm Post subject: Instructions for horizontal tail.

I might be missing a few more pages from the  original cover and finish section of my Mod IV 1050 rebuild. The two panels that  cover the triangular area below the stab are held on by a series of tabs. I  cannot devine what method is used to secure 

 them.

  

  

 Dave Goddard- Mod IV 1050/582

do not  archive

   [quote][b]

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Tom Jones

Joined: 12 Mar 2006
Posts: 752
Location: Ellensburg, WA

Posted: Mon Oct 22, 2007 12:58 pm Post subject: Re: Instructions for horizontal tail.

Dave, the Classic 4 manual instructs to drill the fuselage tabs 7/64 and use 6R X 3/8" Truss Type A screws to attach the covers.  The covers should be as close to the stabilizer and as far foreword as possible.  back drill through the tabs and cover.



It also says you may want to postpone drilling and installing the covers until you make some test flights.  You might have to move the front of the Horizon stab down to adjust pitch trim.



The tabs on my fuselage were hardened (from the welding I suspect) so I burned up a couple bits drilling them.  Then the truss screws didn't work because the tabs were so hard the screws stripped without threading into the tabs.  I then drilled the tabs out larger and put some #6 machine screw U nuts on the tabs and used #6 stainless machine screws.

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_________________
Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA

pwmac(at)sisna.com
Guest

Posted: Mon Oct 22, 2007 4:12 pm Post subject: Instructions for horizontal tail.

Quite a pain. I had the same issue but mine were in the wrong places 

to attach the metal. Had to make do with added tabs. Yes - Add the 

metal after flight test in case the horizontal needs to be adjusted. 

At least make sure the tabs have holes & screws that fit, and are in 

places that allow the metal to be installed.

Paul

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

At 02:58 PM 10/22/2007, you wrote:

 	  Quote: 	
		  



Dave, the Classic 4 manual instructs to drill the fuselage tabs 7/64 

and use 6R X 3/8" Truss Type A screws to attach the covers.  The 

covers should be as close to the stabilizer and as far foreword as 

possible.  back drill through the tabs and cover.



It also says you may want to postpone drilling and installing the 

covers until you make some test flights.  You might have to move the 

front of the Horizon stab down to adjust pitch trim.



The tabs on my fuselage were hardened (from the welding I suspect) 

so I burned up a couple bits drilling them.  Then the truss screws 

didn't work because the tabs were so hard the screws stripped 

without threading into the tabs.  I then drilled the tabs out larger 

and put some #6 machine screw U nuts on the tabs and used #6 

stainless machine screws.



--------

Tom Jones

Classic IV, Phase one

503 Rotax, 72 inch Two blade Warp

Ellensburg, WA

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Mon Oct 22, 2007 5:32 pm Post subject: Re: Instructions for horizontal tail.

I change the position of my horiz. stab twice a year when going from floats to wheels and back again. 



I use the top hole on wheels  ( front of horiz. stab up more) 



And the bottom hole while on floats.  



Plane is flyable either way but just a bit more stick pressure, but defiantly not un bearable thanks to the Kitfox's light controls. 



When testing you will likely find your best cruise   582 ?   5800 to 6000 rpm  and set your horiz stab accordingly.   If you have trim is not as big of a deal. I don't have trim and really the controls are so light it just extra weight    



Keep em light !!

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Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Tue Oct 23, 2007 3:16 am Post subject: Instructions for horizontal tail.

I used very small sheet metal screws...can't recall the size right  

now, but if they ever strip, I can always go larger or use J-nuts/U- 

nuts.

Lynn Matteson

Grass Lake, Michigan

Kitfox IV Speedster  w/Jabiru 2200

flying w/420+ hrs

On Oct 22, 2007, at 4:26 PM, Dave G. wrote:



 	  Quote: 	
		   I might be missing a few more pages from the original cover and  

 finish section of my Mod IV 1050 rebuild. The two panels that cover  

 the triangular area below the stab are held on by a series of tabs.  

 I cannot devine what method is used to secure

 them.

 Dave Goddard- Mod IV 1050/582

 do not archive

 http://www.matronics.com/Navigator?Kitfox-List_- 

 ============================================================ _- 

 forums.matronics.com_- 

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

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Lynn
Kitfox IV-Jabiru 2200
N369LM

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Tue Oct 23, 2007 5:52 am Post subject: Instructions for horizontal tail.

The tail of the plane can be subjected to a lot of vibration.  In the C185s

they have similar fairings around the tail.  Those fairings are mostly held

in place by two machine screws and nuts per side, and then several PK screws

I think they were #10.  It is amazing how well they can hold!  All the tail

fairings on the C are curved to give them extra strength when held

(securely) in place.



Noel



[quote] --

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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

kerrjohna(at)comcast.net
Guest

Posted: Tue Oct 23, 2007 8:01 am Post subject: Instructions for horizontal tail.

tinnerman nuts.

  

 John Kerr

  

 [quote]-------------- Original message -------------- 

From: "Dave G." <occom(at)ns.sympatico.ca> 

    I might be missing a few more pages from the original cover and finish section of my Mod IV 1050 rebuild. The two panels that cover the triangular area below the stab are held on by a series of tabs. I cannot devine what method is used to secure 

 them.

  

  

 Dave Goddard- Mod IV 1050/582

do not archive

 	  Quote: 	
		  

	
[b]

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Tue Oct 23, 2007 8:07 am Post subject: Re: Instructions for horizontal tail.

mine got  tiny Philips screws. 

 they tabs are hard to drill --  i put in larger ones.

 

not sure size really  about  # 8s maybe ? 



I also made gap seal coversimilarar for the top of the horiz stab.

not sure why it was left open.

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