|
-
POSTING RULES

-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|

10-27-2009, 01:48 PM
|
|
|
|
Join Date: Jun 2006
Location: St. Louis (Eureka), MO
Posts: 283
|
|
The rack was made to be adjustable with turn buckles on the upper arms, which were leveled with a SmartLevel to take out any twist. Then clamps were used on the the bottom spar and arms after everything was plumbed. I didn't want to trust the pre-drilled holes, so hence going through all this before drilling. Also, to hold the mobile rack in place, caster cups glued to floor were used, so nothing could slide around once in place. I wouldn't be afraid of this type of jig if one needed mobility and did not have a pre-drilled kit, but a fixed steel structure would be best, like Rudy's and many others.
Quote:
Originally Posted by longranger
This is great for the RV7/8/9/10 fully prepunched wings, where the "jig" is really just a work rack to allow access to both sides simultaneously, the alignment being determined by the parts themselves. The -4 and -6 wing construction method relies on the uprights being rigid relative to each other to absolutely assure there is no twist in the spar before drilling skins to ribs.
|
|

10-27-2009, 02:15 PM
|
 |
|
|
Join Date: Jan 2005
Location: northwest georgia
Posts: 315
|
|
you can use "Bondo" to glue it to a concrete floor. Just blob a generous amount to the post/floor joint.
I hardens alot faster than the liquid nails method.
Don't get overly excited about the "jig". Those were the old days before prepunched parts.
Its just a work rack.
__________________
Cary Rhodes
Taylorsville, Georgia
N203CR
Van's RV-7
First Flight April 2004
|

10-27-2009, 03:27 PM
|
 |
|
|
Join Date: Mar 2007
Location: 45G, Brighton, MI
Posts: 1,867
|
|
Quote:
Originally Posted by caryr
you can use "Bondo" to glue it to a concrete floor. Just blob a generous amount to the post/floor joint.
I hardens alot faster than the liquid nails method.
|
With help from a Varieze builder, I used bondo to secure my 4x4 empennage jig posts to the basesment floor, and it worked very well. That was with wife#1, and when that came to an end I had to vacate quickly, so it wasn't practical to remove the jig. I can't say for sure how easy/difficult it would have been to chip out the bondo.
Quote:
Originally Posted by caryr
Don't get overly excited about the "jig". Those were the old days before prepunched parts.
Its just a work rack.
|
The original poster is building a 6A, which IIRC, has prepunched skins, but not ribs, necessitating the wing frame to be square, true, and rigid before drilling the skins to the spars/ribs.
__________________
Miles (VAF# 1238, Paid up as of 2018)
RV-7 TU 904KM (reserved)
Wings Fitted and Finish Kit on site
Construction Log
Picasa: Empennage Album, Wings Album, Fuselage Album
1955 Cessna 170B flying since 1982
'To get something you never had, you have to do something you never did.' -Unk.
|

10-27-2009, 05:13 PM
|
 |
|
|
Join Date: Jul 2007
Location: Molalla, Oregon
Posts: 955
|
|
My wing stand was a little different than most I have seen. I needed to be able to open my garage door while building my wings, so I used one long 4 x 4 from floor to ceiling, and one short one braced to the nearest wall and the longer 4 x 4. I used liquid nails to hold the 4 x 4's to the floor. Worked great and easily scraped off when I dismantled the jig. Very simple. Very strong. Would do it again exactly the same way.
Bruce's easy wing stand
|

10-28-2009, 08:07 AM
|
|
|
|
Join Date: Oct 2008
Location: CAD
Posts: 249
|
|
Bruce, that is a great, simple stand you made.
i'm at that point too and don't like the idea of supports at the bottom.
__________________
RV9.... Tail done. Inspection done! Wings pre-cover MDRA inspection done. Closing them up now. Fuse underway.
|

10-28-2009, 09:55 PM
|
 |
|
|
Join Date: Jul 2006
Location: Poulsbo, WA
Posts: 208
|
|
free standing jig
I used a free standing jig to build my -6A wings one at a time. I got it from a friend that built a set of -8 wings on same jig.
Single picture shown below and other pictures of it from various angles are available at following web page:
http://rv6aproject.ckhand.com/Wings/wings_pg1.htm

|

10-28-2009, 10:39 PM
|
 |
|
|
Join Date: Jul 2007
Location: Molalla, Oregon
Posts: 955
|
|
Quote:
Originally Posted by swixtt
Bruce, that is a great, simple stand you made.
i'm at that point too and don't like the idea of supports at the bottom.
|
Thanks, Pete! I'm glad it's useful to another builder. It's so much easier to walk around the jig when you don't have supports at the bottom. You'll walk around the stand a thousand times or more. Good luck on your wings! It's a great feeling to get them going.
|

10-29-2009, 01:39 PM
|
|
|
|
Join Date: Sep 2009
Location: Kitchener, Ontario Canada
Posts: 36
|
|
2 wing jigs distance apart
We would like to build 2 wing jigs so we can build both wings at the same time. We have about 9.5 feet by 14.5 feet of free space in our garage. Is this big enough for 2 wing jigs? Does it matter how the wings are oriented to to each other?(ie. both wing roots at the same end or opposite?) Do we really need 5 feet between the jigs?
|

10-30-2009, 12:22 AM
|
|
|
|
Join Date: May 2006
Posts: 24
|
|
Wood for wing jigs
I just have to jump in here and share some of my 24 years of wood frame construction experience with you metal airplane building types.
Don't use 4x4s for anything you expect to remain straight!
Use two kiln dried 2x4s glued and screwed together instead.
Here's why. If you look at the end grain of almost all of the 4x4s you will find at your typical home improvement and aircraft parts warehouse store you will find a series of concentric rings. That's the center of the tree. Now lets think about this. That is really just a sapling surrounded by some more uncured wood. How much character and strength did you have when you were just a sapling? How about when you were surrounded by your uncured friends? Trust me a 4x4 is going to twist and warp pretty badly as it drys out.
Get some kiln dried 2x4s and clamp, glue and screw them together such that whatever grain and existing warp or bend they have is opposite to each other so they "fight" each other in their tendancy to warp further.
Evan better than that is to get some salvaged old wood from someones renovation project. It will be evan dryer than the kiln dried stuff and as far as warping and twisting is concerned "it's already done what it's gonna do"
__________________
I'm just grateful to be here.
|

09-05-2019, 08:26 AM
|
|
|
|
Join Date: Oct 2015
Location: Houston (Kingwood), TX
Posts: 59
|
|
Quote:
Originally Posted by BSwayze
My wing stand was a little different than most I have seen. I needed to be able to open my garage door while building my wings, so I used one long 4 x 4 from floor to ceiling, and one short one braced to the nearest wall and the longer 4 x 4. I used liquid nails to hold the 4 x 4's to the floor. Worked great and easily scraped off when I dismantled the jig. Very simple. Very strong. Would do it again exactly the same way.
Bruce's easy wing stand
|
Wow - that was genius! I wish I had read this about 2 weeks ago....
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 07:12 AM.
|