http://www.spacemodeling.org/JimZ/centuri/ka-12.pdf
The fins are on Page 6, the body shroud is on Page 7.
Pages 6 and 7 are printed on 110 lb. card stock.
On the first print of the shroud I tried the "fit to page" setting.
It was a a little large with a ST-7 tube slid in.
A second print was made with the "fit to page" setting off. That seems to be correct.
My print was offset to the left and didn't get all the border lines. A little bit was cut off. That's okay, I can live with that.
A X-24 search on YORF brought up many different shroud skins, some you can make up in your choice of colors: CLICK HERE
Check out Posts #9 and #71 by Ironnerd and Rosko Racer
The fins were printed with the "fit to paper" setting turned off.
You'll also need a sized bulkhead, called a "former" in the instructions.
For the former bulkhead cutting template, print off page 8 on 20 lb. paper.
In addition to the printed parts on 110 lb. card stock, here's the parts you'll need -
(not shown)
- The Estes plastic nose cone # 070323, the same small conical cone from the Yankee kit.
- 3" of ST-7 tubing (or BT-20 tubing, the slightly larger diameter ST-7 tubing will better fit the hole at the top of the shroud print. To fit the larger opening you can build up the tube top diameter with a strip of cardstock )
- 4 launch lugs, each cut to 1 3/4" long
- Cardboard for the "former" bulkhead. The original Centuri former looks like it was cut from light Masonite.
