This is the Estes Super Neon that I modified to become the Klingon Star Dart. I added 3 fins and moved the tube fins out to the ends of these new fins.
The motor mount was built stock.
I cut out my new fins from 3/32" balsa. They were sized 3 1/2" at the root and tip with a span of 1 3/4". The slant length is 2 1/2" long.
I glued the tubes together in pairs (I always liked the dual engine look of the B-52).
The fins were glued to the body tube 1/2" from the rear and were swept forward. The tube pairs were glued to the ends of these fins.
Then I had to figure out what to do with the 6 small fins supplied with the kit. I decided to glue one from each fin to the body tube, and then the other fins inline on the outboard of the tube fins.
The rocket came with a BT-50 main body tube and 6 BT-50 tube fins. There were six small balsa fins, a BT-20 motor mount (with engine hook, engine block, and centering ring), plastic nose cone, parachute, launch lug, typical Estes shock cord (although 24" long--not too bad), and decals.
I sealed the balsa and primed the rocket. I first sprayed the rocket gold, then covered with a light coating of green metal flake. I made the original fins black with a stripe continuing onto the body tube. The kit decals did not fit with my paint scheme so I did not use them. I did a final coat with Future Polish.
Flight and Recovery:
I used "dog barf" for wadding and installed a 12" chute. The engine has a standard Estes motor mount. The Super Neon recommends the A8-3, B4-4, B6-4, and C6-5. For my first flight I tried the A8-3. There was a voice in the back of my head that was telling me this was a mistake--and it was right! The rocket went straight up but did not go that high. It tipped over and headed down. Just before hitting the ground (about 5' up), the ejection charge went off getting the nose cone and chute out of the way so the body tube took the full impact. However, I think the ejection did slow the rocket down and the ground was soft. It dug in over an inch and I had to dig the dirt out of the tube. Only a little bit of the edge was damaged. I straightened it out and kept flying.
The next flight was on a B6-4. Again, a nice straight flight. The rocket went up higher. Ejection was 1~2 sections after apogee and returned to a nice safe landing.
Third flight was on a C6-5. Again, straight and higher. The wind caught it so I had a hike to get it back. While it was coming down, I had a bit of panic. It landed only 5ft from the tree line (and these trees were tall!)
The Super Neon is a nice kit, but I like the looks of the Klingon Star Dart better. I would not use either the A8-3 or B4-4. The extra weight and drag just won't get it high enough.