Model Rocket Building Blog
Semroc (Centuri) Excalibur KV-43 BackgroundAccording to the Semroc website - The first version of the Excalibur was introduced in the 1972 Centuri catalog - The Semroc website says it had streamer recovery, but it did use a 12" parachute. In 1973, a booster was added, this kit variation was renamed the Excalibur 2. The Excalibur single ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 1, PartsHere's all the parts - The face card on the Semroc instructions shows another paint job - an overall light gray with the red decals. I'll do a more interesting decor. The 12" parachute is one of the original Semroc (Centuri) style in yellow and black. The original kit had plastic nose cone ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 2, Fin PrepThe fins were removed from the card stock sheet using a hobby knife. The ash left from the laser cutting darkens up the edges. Trust me on this - Wipe off the burnt ash from the edges before proceeding. Remove most of the ash with a paper towel. Sand off the remaining ash and hold-down tics with a ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 3, Engine MountThe engine mount tube had a small "stab" cut meant for the upper bend of the engine hook. I extended the left side of the slot with my knife using the flat back side to square it off. I didn't want to punch the engine hook through the stab slot and tear up the tube. The Kevlar line gets a loop ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 4, Filler PrimerThe fins were sprayed with filler/primer before gluing onto the body tubes. On the left is one of the larger, lower fins after sanding down the filler/primer. The remaining gray filler shows how uneven the surface is. On the right is the small upper fins, before and after sanding to surface. The ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 5, Fin GluingThe engine mount was glued in first. As I mentioned before, there is not much clearance between the ST-8 and ST-7 motor mount tube. TIP: By gluing the engine mount in before gluing on the fins, I can then mark the tube and center the engine hook between two fins. Here's the small upper fins on the ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 6, Shock Cord FeedFeed the Kevlar line out the top of the lower tube. I mark the Kevlar below the top lip of the tube. If the ejection were to happen too early or too late you could end up with a Zipper. A Zipper is a tear down the body when the Kevlar extends beyond the top tube end. Here's the steps to feed the ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 7, Prepping For PaintHere's another rough shoulder on a balsa nose cone. The picture on the left shows the before and after. On the right - Slide the nose cone out of the tube a bit, wide enough for a folded over piece of 400 grit sandpaper. Gently run the folded sandpaper around the joint knocking down the rough ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 8, Decal Draw & Red MaskMentioned earlier, I'll be trying to duplicate this version from the Centuri Big Shot catalog page. There were decals included in the Semroc kit, but these were mostly in red. The Centuri model decals were black. I drew up new decals, some with a bit of red. This is an interesting mask - the ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 9, Yellow MaskThe yellow is masked. The yellow bars are between the two vertical red bars. They aren't as tall and sit inside the ends of the red. I use a Q-tip to press down and seal the edges of the Scotch tape masks. Take extra care in the corners where the tape overlaps. When the tape was lifted I lost some ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 10, Decal PlacementThe tricky decals are the vertical fin stripes. The fins are thin fiber stock and I won't be able to roll the ends over the top. There isn't a real rounded edge. On the left the two parallel lines are cut to size while still on the backing sheet before soaking. When I got the length right, I ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, Part 11, Tying It All TogetherThe motor mount tube extends below the main air frame tube. The catalog picture shows the tube extension painted black. I used the Contact Paper Blackboard covering material. A strip was cut and started under the engine hook. This was rolled around the tube, the trimmed end stuck under the engine ...[Read More]
Semroc (Centuri) Excalibur KV-43 Build, FinishedThe touch-ups worked well, you have to look close to find them. I did make duplicate decals, some in red. The black decals looked better, there was already plenty of red on the model. This is another build I was always curious about. A good looking tall, skinny scale-like model. I'm not a fan of ...[Read More]
Sponsored Ads
 |
 |