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Rear Wing Channels (Scratch Builder Question)

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sky_ranger161

Joined: 07 Jun 2006
Posts: 91

Posted: Fri Jun 30, 2006 2:57 am Post subject: Rear Wing Channels (Scratch Builder Question)

Hi guys,

   

  I'm to the point of fabricating the rear wing channels and on my XL. These things are 12' long, and my plan is to bevel the edge of my work table for proper springback, use the router to radius the edge and basically make a 12' form block out of the edge of my table. Seems logical enough to me, but I was wondering if  (a.) this has already been tried and (b.) was it successful?

   

  If not, how did you guys make this 12' bend? I saw on Scott Laughlin's site that he had cut his, but never shows the bending process. I've seen some pretty ingenious press brakes out there too, but am looking at this from a cost vs. return standpoint as well. As always, any help is greatly appreciated.

   

  Debo Cox

  XL/Corvair

  Working on wings



  	 		Sneak preview the [url=http://us.rd.yahoo.com/evt=40762/*http://www.yahoo.com/preview] all-new Yahoo.com[/url]. It's not radically different. Just radically better.

mgraves(at)usmo.com
Guest

Posted: Fri Jun 30, 2006 3:49 am Post subject: Rear Wing Channels (Scratch Builder Question)

Debo,



I have never tried 12ft this way,  I have bent aprox 7 ft this way.  It is 

not as good as finding a brake that will bend it.   But I think acceptable.



If you do end up bending your channels this way.    I would suggest using a 

piece of plywood aprox 2 ft long to start the bend.   Strike the plywood 

with the mallet and move it along.   It makes a nicer piece than just 

striking the alum directly with the mallet in these long pieces.



Its also makes a better piece to use most of a full sheet of alum width 

wise....  bend the first lip,  move it out,  bend the middle,  move it out 

bend the last lip,  and snip it off of the larger sheet.  This way you get 

a much better clamping surface.



Monty



At 03:52 AM 6/30/2006 -0700, you wrote:

 	  Quote: 	
		  Hi guys,



I'm to the point of fabricating the rear wing channels and on my XL. These 

things are 12' long, and my plan is to bevel the edge of my work table for 

proper springback, use the router to radius the edge and basically make a 

12' form block out of the edge of my table. Seems logical enough to me, 

but I was wondering if  (a.) this has already been tried and (b.) was it 

successful?



If not, how did you guys make this 12' bend? I saw on Scott Laughlin's 

site that he had cut his, but never shows the bending process. I've seen 

some pretty ingenious press brakes out there too, but am looking at this 

from a cost vs. return standpoint as well. As always, any help is greatly 

appreciated.



Debo Cox

XL/Corvair

Working on wings

Sneak preview the 

<http://us.rd.yahoo.com/evt=40762/*http://www.yahoo.com/preview>all-new 

Yahoo.com. It's not radically different. Just radically better.

nfivesl(at)yahoo.com
Guest

Posted: Fri Jun 30, 2006 5:12 am Post subject: Rear Wing Channels (Scratch Builder Question)

Debo:



I bent the two pieces with the 8' brake I built from

Larry McFarland's plans.  If you can find an 8' sheet

brake you can build the rear channel and splice it.  I

think the spliced rear channel is stronger than the

full piece because you have to drill that large hole

for the aileron control.  The splice happens to fall

right where you drill the hole so you have much

thicker material there where the rear channel is the

weakest.  



Using the table or any other form block will give you

a twisted channel - especially over a 12' length.  I

know this because I tried it.  The splice really is a

good solution.  I got a hand drawing from Chris Heintz

for the splice.  I think it may be posted on

ch601.org.  



Have a good day,



Scott Laughlin

www.cooknwithgas.com

In the home stretch.



--- Debo Cox <sky_ranger161(at)yahoo.com> wrote:



 	  Quote: 	
		   Hi guys,

    

   I'm to the point of fabricating the rear wing

 channels and on my XL.


	


__________________________________________________

sky_ranger161

Joined: 07 Jun 2006
Posts: 91

Posted: Fri Jun 30, 2006 3:12 pm Post subject: Rear Wing Channels (Scratch Builder Question)

Thanks for the replies guys. Once again the list comes through. I appreciate the help.

   

  Debo Cox

  XL/Corvair

   

  Do Not Archive

Ron Lendon

Joined: 10 Jan 2006
Posts: 685
Location: Clinton Twp., MI

Posted: Fri Jun 30, 2006 7:46 pm Post subject: Re: Rear Wing Channels (Scratch Builder Question)

Hey Debo,



I am getting ready to tackle the wings also and in doing some research I came up with this link in the archives:



http://www.matronics.com/photoshare/HeatonHE(at)aol.com.05.07.2006/index.html



The pictures show how Herb Heaton made a 12' long press brake and made his parts.  I am thinking of going along these same lines.



I am currently sidetracked tearing down what looks like a 110 corvair motor.

_________________
Ron Lendon
WW Corvair with Roy's Garage 5th bearing
CH 601 XLB
N601LT - Flying
http://www.mykitlog.com/rlendon
Corvair Engine Prints:
https://sites.google.com/site/corvairenginedata/

dclaytx2(at)HOTMAIL.COM
Guest

Posted: Mon Jul 03, 2006 10:29 am Post subject: Rear Wing Channels (Scratch Builder Question)

I just made my rear wing channels today. Bent them with my trusty $75 

bending brake. They turned out great. I'm going the 6 foot spliced route. If 

the good folks at Can Zac think it's OK, and Zen-Master Scott Laughlin 

thinks it's OK, and most importantly, if Chris Heintz thinks it's OK...then 

its OK with me.



If anyone is interested I can email you step by step instructions (with 

photos) showing how I did this task.



Dave

Scratch building wings



_________________________________________________________________

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randy(at)shadycreekoutlaw
Guest

Posted: Mon Jul 03, 2006 11:17 am Post subject: Rear Wing Channels (Scratch Builder Question)

If you'd like me to post the step by step on my site, send them to me and 

I'll put em' up...



Thanks,



Randy

---

ch601xl(at)gmail.com
Guest

Posted: Mon Jul 03, 2006 12:16 pm Post subject: Rear Wing Channels (Scratch Builder Question)

You know I will as well Dave...Please send.



On 7/3/06, Dave and Jan Clay <dclaytx2(at)hotmail.com (dclaytx2(at)hotmail.com)> wrote:  	  Quote: 	
		  I just made my rear wing channels today. Bent them with my trusty $75

bending brake. They turned out great. I'm going the 6 foot spliced route. If 

the good folks at Can Zac think it's OK, and Zen-Master Scott Laughlin

thinks it's OK, and most importantly, if Chris Heintz thinks it's OK...then

its OK with me.



If anyone is interested I can email you step by step instructions (with 

photos) showing how I did this task.



Dave

Scratch building wings



_________________________________________________________________

	


-- 

Christopher W. E. Smith 

fly1m1

http://ch-601xl.com

nfivesl(at)yahoo.com
Guest

Posted: Mon Jul 03, 2006 12:45 pm Post subject: Rear Wing Channels (Scratch Builder Question)

Wow Dave! That picture looks like you came to my

garage and cleaned it up and took that picture!  Mine

used to be that clean but somehow it got messy and I

can't bring myself to stop and re-organize it before I

finish my airplane.  



Your rear channel bend looks great.  I think the

spliced channel is stronger than the 12' version since

you reinforce the channel right where you drill the

big hole for the aileron control rod.  Chris H. is

good with it and I have a sketch from him to prove it.

 Just to be clear, the splice is a mini-channel that

fits inside the flanges of the channel, not just a

plate.  It's a tricky bend to get just right so get

some scrap pieces ready for trial and error.



Great work,



Scott Laughlin

www.cooknwithgas.com

Wishing my garage was as clean as Dave's.

DO NOT ARCHIVE



--- Dave and Jan Clay <dclaytx2(at)hotmail.com> wrote:



 	  Quote: 	
		   I just made my rear wing channels today. Bent them

 with my trusty $75 

 bending brake. They turned out great. I'm going the

 6 foot spliced route. If 

 the good folks at Can Zac think it's OK,


	


__________________________________________________

waj(at)quik.com
Guest

Posted: Mon Jul 03, 2006 2:03 pm Post subject: Rear Wing Channels (Scratch Builder Question)

Great looking work Dave ,your brake design must be working well .Building 

the brake is my next task .Please e-mail me the rear wing channel photos 

.Thanks Wade

---

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