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Rudder Rear Skin Question

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rbjjr

Joined: 18 Mar 2007
Posts: 36

Posted: Mon Apr 16, 2007 4:08 am Post subject: Rudder Rear Skin Question

My CH 701 rudder skeleton is nearly done and I'm thinking about the rear skin.



I am following the plans and don't necessarily want to deviate, but it occurred to me that I might get a cleaner looking and maybe stronger result if I continued the rear skin all the way down to the bottom of the bottom rib.  To me this would look better than stopping the skin at the top of the bottom rib rather than taking it down flush with the bottom.  



Has anyone done this on the 701?  Is it designed this way due to the aluminum sheet size restriction or for some other reason? 



Thanks 



Burke Johnson

CH 701

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tommylutz(at)gmail.com
Guest

Posted: Mon Apr 16, 2007 5:19 am Post subject: Rudder Rear Skin Question

I'm at the same point you are on my 701 rudder, and as a disclaimer, I am a complete newbie to building.  I didn't think about your suggestion before trimming the skin, but your idea raises some questions in my mind that I do not have the answers to.  Where would you put the rivet line?  Would you put two rivet lines?  If you change the location of the rivet line without adding a second one, will that let the rudder skin flex more?  Will adding a second rivet line decrease the strength of the bottom rib because of the extra holes?  If you notice similar opportunities to change the original design, how much accumulated weight will be added to the airframe? 

  

 Tom



 

 On 4/16/07, rbjjr <burkeandsusan(at)verizon.net (burkeandsusan(at)verizon.net)> wrote: [quote]--> Zenith-List message posted by: "rbjjr" <burkeandsusan(at)verizon.net  (burkeandsusan(at)verizon.net)>



My CH 701 rudder skeleton is nearly done and I'm thinking about the rear skin.



I am following the plans and don't necessarily want to deviate, but it occurred to me that I might get a cleaner looking and maybe stronger result if I continued the rear skin all the way down to the bottom of the bottom rib.  To me this would look better than stopping the skin at the top of the bottom rib rather than taking it down flush with the bottom. 



Has anyone done this on the 701?  Is it designed this way due to the aluminum sheet size restriction or for some other reason?



Thanks



Burke Johnson

CH 701





Read this topic online here: 



[b]

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tommylutz(at)gmail.com
Guest

Posted: Mon Apr 16, 2007 5:21 am Post subject: Rudder Rear Skin Question

Burke,

  

 Did you install your rudder horn yet?  I had some problems installing the horn because the rivets on the very bottom edge of the spar were hitting the horn rivets. Had to drill out those smaller rivets and install the horn first. 

  

 Tom



 

 On 4/16/07, rbjjr <burkeandsusan(at)verizon.net (burkeandsusan(at)verizon.net)> wrote: [quote]--> Zenith-List message posted by: "rbjjr" <burkeandsusan(at)verizon.net  (burkeandsusan(at)verizon.net)>



My CH 701 rudder skeleton is nearly done and I'm thinking about the rear skin.



I am following the plans and don't necessarily want to deviate, but it occurred to me that I might get a cleaner looking and maybe stronger result if I continued the rear skin all the way down to the bottom of the bottom rib.  To me this would look better than stopping the skin at the top of the bottom rib rather than taking it down flush with the bottom. 



Has anyone done this on the 701?  Is it designed this way due to the aluminum sheet size restriction or for some other reason?



Thanks



Burke Johnson

CH 701





Read this topic online here: 



[b]

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cltvet(at)mail.ocis.net
Guest

Posted: Mon Apr 16, 2007 5:32 am Post subject: Rudder Rear Skin Question

--

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agibeaut

Joined: 21 Mar 2007
Posts: 64

Posted: Mon Apr 16, 2007 6:29 am Post subject: Rudder Rear Skin Question

I also am a newbie and only a little further along

than you guys are. I'm done with the Rudder, Horiz.

Stab., and the Elevator and here is what I've learned

so far. Build it strictly to the plans. I lurked for

several months here before I decided to build the 701,

and that theme keeps coming back over and over. Even

the most experienced among us will routinely caution

not to deviate. I'm still a rookie at this, so take

this advice for what it is worth. I've had a couple of

instances already where I was tempted to deviate, and

then 5 or 6 steps down the line realized what a

mistake that would have been. This website has a

wealth of advice and encouragement from some great

people, who routinely share the knowledge gained from

their success and their failures. Priceless. Stick to

the plans. I hope you guys are enjoying this as much

as I am. 



Do not archive

--- Tom Lutz <tommylutz(at)gmail.com> wrote:



 	  Quote: 	
		   I'm at the same point you are on my 701 rudder, and

 as a disclaimer, I am a

 complete newbie to building.  I didn't think about

 your suggestion before

 trimming the skin, but your idea raises some

 questions in my mind that I do

 not have the answers to.  Where would you put the

 rivet line?  Would you put

 two rivet lines?  If you change the location of the

 rivet line without

 adding a second one, will that let the rudder skin

 flex more?  Will adding a

 second rivet line decrease the strength of the

 bottom rib because of the

 extra holes?  If you notice similar opportunities to

 change the original

 design, how much accumulated weight will be added to

 the airframe?

 

 Tom

 

 

 On 4/16/07, rbjjr <burkeandsusan(at)verizon.net> wrote:

 >

 > 

 <burkeandsusan(at)verizon.net>

 >

 > My CH 701 rudder skeleton is nearly done and I'm

 thinking about the rear

 > skin.

 >

 > I am following the plans and don't necessarily

 want to deviate, but it

 > occurred to me that I might get a cleaner looking

 and maybe stronger result

 > if I continued the rear skin all the way down to

 the bottom of the bottom

 > rib.  To me this would look better than stopping

 the skin at the top of the

 > bottom rib rather than taking it down flush with

 the bottom.

 >

 > Has anyone done this on the 701?  Is it designed

 this way due to the

 > aluminum sheet size restriction or for some other

 reason?

 >

 > Thanks

 >

 > Burke Johnson

 > CH 701

 >

 >

 >

 >

 > Read this topic online here:

 >

 >



http://forums.matronics.com/viewtopic.php?p=107242#107242
	


 	  Quote: 	
		   >

 >

 >

 >

 >

 >

 >

 >

 >

 >

 >

 


	




__________________________________________________

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AVIIDFLYIER(at)aol.com
Guest

Posted: Mon Apr 16, 2007 6:34 am Post subject: Rudder Rear Skin Question

My manual says not to put the rudder horn until later. So I taped it to the  rudder and put away until I am ready to install.

  

 Tom Knox

 CH-701  Tail feathers,

  Left wing 90%



See what's free at AOL.com. 

  [quote][b]

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rbjjr

Joined: 18 Mar 2007
Posts: 36

Posted: Tue Apr 17, 2007 2:41 pm Post subject: Re: Rudder Rear Skin Question

Thanks for the feedback.  



Sticking to the plans is a point well taken.  I only plan to deviate if I get factory permission and for necessary items.  For example I asked about adding a beacon to the top of the rudder and for some small holes in which to spray Corrosion X after construction.

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