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Rib form angles

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brothapig(at)HOTMAIL.COM
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Posted: Fri Jan 05, 2007 7:55 am Post subject: Rib form angles

I'm building a 701, and currently making the wing rib forms.  The material will be .025 6061.  What would be an appropriate angle to sand the edges of the forms, to assure that my flanges come out 90 deg?  Is there a formula to use for different thickness material?



Ryan

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WClagg

Joined: 30 Jun 2006
Posts: 21

Posted: Fri Jan 05, 2007 9:19 am Post subject: Rib form angles

Ryan,

  I just finished making my wings for a 701and 10 degrees worked  best for me. That allowed for the spring back. If I can be of any help you can  contact me directly if you like.

 Wayne

 rclaggf4u(at)aol.com

  [quote][b]

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_________________
Wayne Clagg

larry(at)macsmachine.com
Guest

Posted: Fri Jan 05, 2007 9:40 am Post subject: Rib form angles

Hi Ryan,

The forms should have a 7-degree back angle, regardless of thickness of 

material

which will allow you to bring the flanges around to see them spring back 

to 90 degrees

or near. Minor straightening is usually necessary and crimping 

adjustments will help

as well during the last pass at bending flanges.



Larry McFarland - 601HDS at www.macsmachine.com

Ryan Vechinski wrote:

 	  Quote: 	
		   

 I'm building a 701, and currently making the wing rib forms.  The material will be .025 6061.  What would be an appropriate angle to sand the edges of the forms, to assure that my flanges come out 90 deg?  Is there a formula to use for different thickness material?



 Ryan

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ggower_99(at)yahoo.com
Guest

Posted: Thu Jan 11, 2007 9:06 am Post subject: Rib form angles

Hello Ryan,



No need for extra thickness in the ribs (or any other part of the aiplane)  other than the specified in the plans...   As IK learned from older experienced builders...  "Add only Lightness and Simplicity to any Airplane".



At the end all the extra weight will limit your gasoline on board, passenger weight and baggage....   Performance always suffer in any "heavy" airplane.



Hope this helps.



Saludos

Gary Gower.

701 912S 

Building  601XL.

Ryan Vechinski <brothapig(at)hotmail.com> wrote: 	  Quote: 	
		   --> Zenith-List message posted by: Ryan Vechinski 

I'm building a 701, and currently making the wing rib forms.  The material will be .025 6061.  What would be an appropriate angle to sand the edges of the forms, to assure that my flanges come  out 90 deg?  Is there a formula to use for different thickness material?



Ryan

	




   Any questions?  Get answers on any topic at Yahoo! Answers. Try it now. [quote][b]

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ter_turn(at)yahoo.com
Guest

Posted: Thu Jan 11, 2007 11:48 am Post subject: Rib form angles

Ryan, what you're looking for is the form flange angle to compensate for the "spring back", which should be about 10 degrees or so. You can always finesse the flange of the rib with wide seaming pliers to get them just right. Good luck!

   

  Terry Turnquist

  601 XL-Plans

  St. Peters, MO 

  [quote]



Ryan Vechinski <brothapig(at)hotmail.com> wrote:  [quote]--> Zenith-List message posted by: Ryan Vechinski 

I'm building a 701, and currently making the wing rib forms. The material will be .025 6061. What would be an appropriate angle to sand the edges of the forms, to assure that my flanges come out 90 deg? Is there a  Need a quick answer? Get one in minutes from people who know. Ask your question on  Yahoo! Answers. [quote][b]

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