Matronics Email Lists :: View topic - Crowned rear wing ribs

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Crowned rear wing ribs

Matronics Email Lists Forum Index -> Zenith-List

View previous topic :: View next topic

Author Message

Ron Lendon

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

Posted: Tue Sep 19, 2006 8:24 pm Post subject: Crowned rear wing ribs

Group,



I have made the rear wing ribs and after forming the flange on the lightening holes there is a little crown (8mm) in the ribs.  It was removed on the first four ribs with the L angles.  Should all the ribs get L angles?

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

_________________
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/

gboothe(at)calply.com
Guest

Posted: Wed Sep 20, 2006 3:54 am Post subject: Crowned rear wing ribs

A technique discussed in the Metal Working 101 DVD was to increase some of

the crimps in the edge flanges using a crimping tool. Currently I am scratch

building the center section and, though I have not done the rear ribs, yet,

the technique worked on the nose ribs.



Gary Boothe 

Cool, CA 

601 HDSTD, WW Conversion 

Tail done, wings done, working on c-section



--

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

TxDave

Joined: 22 Jul 2006
Posts: 168
Location: Temple, TX

Posted: Wed Sep 20, 2006 8:26 am Post subject: Re: Crowned rear wing ribs

Hey Ron,

I got my ribs to be pretty flat by tweaking the crimps and making sure the flanges were 90 degrees. I used a small plastic head mallet to work on the flanges while they were laying flat on my work table. But, lets say you do the L angles on every rib. What's the end result? You'll add a few ounces total (at the most) and make your ribs a little stiffer. I can't see any harm, but I'm sure someone else will disagree. From what I've seen, the quality of your work is outstanding. I bet your ribs will be the same.



Dave Clay

Temple, TX

Ch601XL scratch builder



http://www.daves601xl.com

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

randy(at)n344rb.com
Guest

Posted: Wed Sep 20, 2006 8:49 am Post subject: Crowned rear wing ribs

Hi Ron,



I know exactly what you are talking about...  AFTER you crimp the edges, the 

edges will be flat, but the center section of the rib, where the lightening 

holes are, will still be bowed... I had the same thing happen to me...



I really don't think it poses a structural problem, and the factory parts 

very well may have this same 'feature', I don't know, as I've never seen a 

factory rib before...



I did, put angles on all of my ribs, not just the first 4 as the plans show. 

I liked having the angles on all the ribs... I've been told by a few people, 

who have never scratch built a plane, by the way, that this was totally 

unacceptable since it 'wasn't by the plans', but I really don't foresee a 

problem, and I'm not afraid of this from a safety perspective.



I've attached a picture of my right wing so you could see the angles I've 

added.



Thanks,



Randy

XL - Wings - Plans Only

http://www.n344rb.com

Do Not Archive





---

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

000_1202.jpg

Description:

Filesize:

93.09 KB

Viewed:

382 Time(s)

Ron Lendon

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

Posted: Wed Sep 20, 2006 4:08 pm Post subject: Re: Crowned rear wing ribs

Randy,



Well that's what I thought also, but I wanted to bring it up here so the next guy looking for this will be able to find it in the archives.  I did search but its like it never made it in.

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Zenith-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum