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Skybolt Wings

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-Ribs

This page was updated on 10/04/2008
Welcome to the "wings" page for my Skybolt construction.  This is where all the woodworking is.  You gotta like spruce, mahogany, sawdust, and epoxy glue to enjoy this!

Smooth Landings,

Capt Al

Click on the images to enlarge them.  Click on the 'Back' button to make them small again.

Spruce Ribs

 
8/15/04-  I did my assembly of the rib sticks and gussets in my air-conditioned hobby shop in the house.  For cutting and beveling sticks, I just set up the little 4" table saw from Harbor Freight and my cheapy sander on the back of my pickup truck.  For some reason, my wife doesn't like sawdust in the house. BevelRibSticks1.5.jpg (63966 bytes)
There's over 1400 gussets, so I made patterns and stacked the 1/16" plywood 16 high and cut them out on my band saw.  Just make sure you have the stacks securely taped together. DrawingGussets1.5.jpg (52797 bytes)
That's all the top rib sticks numbered and organized in zip-lock bags, ready to put into the jig. SticksInBags1.5.jpg (56594 bytes)
The nose ribs are all cut on a band saw out of 1/4" ply. RibNoses1.5.jpg (51375 bytes)
The jigs are built.  Be careful!  Double-check your full-size rib plans dimensions.  My plans had stretched an 1/8" between spars, throwing the dimensions off.  I had to re-draw the plans to make the jigs accurate. FitRibSticks1.5.jpg (54996 bytes)
The first top rib sticks are in the jig ready to have the gussets glued and weighted down. RibJigProto21.5.jpg (52569 bytes)
I had the local steel yard cut 40 2"x2" steel weights for me and I use all of them when gluing gussets on 2 ribs at a time.  Make sure that you put a THIN layer of T-88 glue on both surfaces.  I bought a box of 1000 popsicle sticks at the craft store that work well.  Sometimes I used flux brushes which I buy by the box. RibWeightedDown1.5.jpg (87676 bytes)
Gently pop the rib out of the jig and glue gussets to the back side.  If I was building jigs again, I would make them out of Starboard since epoxy doesn't stick to it. BacksideWeighted1.5.jpg (53676 bytes)
This rib is getting sheeted on both sides.  I completely coated the inside surfaces with thin epoxy before closing it up. RibSheeting1.5.jpg (73992 bytes)
10/15/04-  That's a complete stack of ribs for the lower and upper wings. RibStack1.5.jpg (54826 bytes)