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Rigging elevator?

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Curt.Thompson(at)verizon.
Guest

Posted: Wed Oct 14, 2009 1:34 pm Post subject: Rigging elevator?

I'm working on rigging the elevator and have a couple of questions:



1) Why do the elevator cables have their turnbuckles in the middle of the

cable?  Why not at the end near the bellcrank?  It seems like there would be

less places for the cable to fail.



2)  Is there an up and down stop that the up elevator hits?  I can see

anywhere it is going to stop.



Curt

Plans building CH701.

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agibeaut

Joined: 21 Mar 2007
Posts: 64

Posted: Thu Oct 15, 2009 4:04 am Post subject: Rigging elevator?

I'm at the same stage you are right now, and I think the answer is that there is not enough clearance between the elevator horn and the various obstructions at full deflection for the turnbuckles to be placed there. I used a string and made a rough model of a turnbuckle and it did not clear.



My stops at full down appears to be the horn hitting the "L" angle at the top rear fuselage skin, so I added a small piece to reinforce it, and the full up stop for mine, (at least for now) is the nose skin touching the bracket on the rear of the horiz. stab. I have the required angles of deflection in both directions. Hope that helps. 



--- On Wed, 10/14/09, Curt Thompson <Curt.Thompson(at)verizon.net> wrote:



 	  Quote: 	
		   From: Curt Thompson <Curt.Thompson(at)verizon.net>

 Subject: Rigging elevator?

 To: zenith701801-list(at)matronics.com

 Date: Wednesday, October 14, 2009, 4:33 PM

 --> Zenith701801-List message

 posted by: "Curt Thompson" <Curt.Thompson(at)verizon.net>

 

 

 I'm working on rigging the elevator and have a couple of

 questions:

 

 1) Why do the elevator cables have their turnbuckles in the

 middle of the

 cable?  Why not at the end near the bellcrank? 

 It seems like there would be

 less places for the cable to fail.

 

 2)  Is there an up and down stop that the up elevator

 hits?  I can see

 anywhere it is going to stop.

 

 Curt

 Plans building CH701.

 

 

 

 Zenith701801-List Email Forum -

 FAQ,

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 Dralle, List Admin.

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Tommy Walker

Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207

Posted: Thu Oct 15, 2009 4:23 am Post subject: Rigging elevator?

Hi Curt,

  

 I rigged my 701 so that full back on the yoke was  the up elevator stop.

 If you look closely at the plans, you will see that  the "L" at the center of the rear spar is to be left untrimmed on the bottom  side.  

 The plans say to trim this for the elevator down  position after positioning the elevator.

  

 Hope this helps,

  

 Tommy Walker in Alabama

 N8701T

   [quote][b]

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_________________
Tommy Walker
N25A - Anniston, AL

JohnDRead(at)aol.com
Guest

Posted: Thu Oct 15, 2009 8:11 am Post subject: Rigging elevator?

I too am at the rigging stage. There is not much space around the rear of  the fuselage and making any adjustments there will be difficult. I am going to  place the turnbuckles behind the cockpit where all the other mixing bits and  pieces are, there is plenty of room and I can easily adjust them in the future  through the big hole in the bottom of the fuselage. Plenty of room too to check  the cable tension while adjusting the cables.

  

 John  Read

CH701 - Elbert CO - Jabiru 3300



Phone: 303-648-3261

Fax:  303-648-3262

Cell: 719-494-4567   

  In a message dated 10/15/2009 6:05:04 A.M. Mountain Daylight Time,  aagibeaut(at)yahoo.com writes:

  	  Quote: 	
		  -->    Zenith701801-List message posted by: Art Gibeaut    <aagibeaut(at)yahoo.com>



I'm at the same stage you are right now,    and I think the answer is that there is not enough clearance between the    elevator horn and the various obstructions at full deflection for the    turnbuckles to be placed there. I used a string and made a rough model of a    turnbuckle and it did not clear.



My stops at full down appears to be    the horn hitting the "L" angle at the top rear fuselage skin, so I added a    small piece to reinforce it, and the full up stop for mine, (at least for now)    is the nose skin touching the bracket on the rear of the horiz. stab. I have    the required angles of deflection in both directions. Hope that helps.    



--- On Wed, 10/14/09, Curt Thompson <Curt.Thompson(at)verizon.net>    wrote:



 	  Quote: 	
		   From: Curt Thompson    <Curt.Thompson(at)verizon.net>

 Subject: Rigging    elevator?

 To: zenith701801-list(at)matronics.com

 Date: Wednesday,    October 14, 2009, 4:33 PM

 --> Zenith701801-List message

    posted by: "Curt Thompson" <Curt.Thompson(at)verizon.net>

 

    

 I'm working on rigging the elevator and have a couple of

    questions:

 

 1) Why do the elevator cables have their    turnbuckles in the

 middle of the

 cable?  Why not at the    end near the bellcrank? 

 It seems like there would be

    less places for the cable to fail.

 

 2)  Is there an up    and down stop that the up elevator

 hits?  I can see

    anywhere it is going to stop.

 

 Curt

 Plans building    CH701.

 

 

 

 Zenith701801-List Email Forum    -

 FAQ,

    - MATRONICS WEB FORUMS -

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 Dralle, List Admin.

 

 

 

    


	




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  [quote][b]

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Curt.Thompson(at)verizon.
Guest

Posted: Thu Oct 15, 2009 8:39 am Post subject: Rigging elevator?

Art,



I think you are right about the turnbuckle interference if I put them

directly on the elevator horn.  I see that now that I have started to

install the cables.



Curt



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georgerace

Joined: 25 Oct 2006
Posts: 788
Location: Albion, MI

Posted: Thu Oct 15, 2009 1:32 pm Post subject: Rigging elevator?

I choose to put the elevator turnbuckles right above the opening in the

bottom of the fuselage.  The foot or so of cable on the forward end allowed

the turnbuckles to easily clear the lower part of the baggage area and made

it very easy to sit on my little wood box and work on the cables.



George 



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_________________
Check out my CH-701 project at:
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