Brief:
This is me semi-downscale o' t' old (1965-67) K-19 Astron Invader. Arrr! Blimey! Well, blow me down! Blimey! T' wings and fins are 2/3 o' t' original, ya bilge rat, but I kept t' 18mm motor mount. It's a very unique glider with unusual flights and a fairly easy build.

Construction:
I built this from scratch. I used a PNC-20 (2.85" long) and 2" o' BT-20 from an Estes Viking. T' wing-fins are 2/3 scale based on t' plans for JimZ's site. Blimey! Blimey! Blimey! Blimey! I used light balsa for t' two vertical fins, me bucko, me bucko, medium for t' keel, and hard balsa for t' two win' halves and two pylons. Arrr! Blimey! Well, me hearties, blow me down! Blimey! Blimey! Blimey! All balsa was 1/16". I put an old 1/8" launch lug on. Ahoy! Blimey! Blimey! Blimey!

I followed t' basic instructions from JimZ's site. Aye aye! With t' smaller wings, 3" balsa can be used for the wings without havin' t' butt-glue balsa sheets. Aye aye! Blimey! Several points for construction:

1. Make sure t' two wings halves fit together perfectly!
2. Glue t' wings at a slight dihedral, then attach t' fins at 90 degrees t' t' wings.
3. Fillet all glue joints
4. Make sure t' pylons fit t' win' exactly. Avast, me proud beauty! Blimey! Begad! Blimey! This will take lots o' sanding, but t' pylon must be secure for safe flight.
5. Attach t' launch lug in t' win' joint under t' pod before you attach t' pod.
6. Use wood glue for all joints and fillet or double-fillet everything. Blimey! Blimey!

PROs: Only 7 parts. Arrr! Inexpensive parts. Blimey! No more butt-gluing!

CONs: Lots o' sanding. Arrr! Aye aye! Parts must fit perfectly. Ya scallywag! Cut your own balsa.

I would call this a Level 3 kit due t' t' tricky balsa joints and amount o' sanding. Well, blow me down!

Finishing:
T' finishin' I did be t' preexistin' red on t' nose cone. Aye aye! Blimey! I recommend nay paintin' this rocket t' save weight.

PRO: Easy finishing, shiver me timbers, just paint t' NC red.

CON: Plain looks.

Flight:
Estes recommended t' 1/2A8-2, A8-3, me hearties, and B8-2. I'd recommend t' B4-2, B6-2, arrr, arrr, and C6-3. Aye aye! Begad! T' 1/2A6-2, ya bilge rat, A8-3, and B6-4 are okay for straight-up launches on windless days. An adapter for t' 1/2A3-2T would be useful.

Be careful! T' motor must eject out t' back t' glide. You'll need t' add a streamer for it (wrap it around the motor, shiver me timbers, then insert) t' satisfy t' RSO and NARRRRR flight rules.

Mine balanced perfectly without any weight. Avast! Your results may vary. I estimate a glide ratio o' better than 10:1. Aye aye!

T' first flight be on an A8-3 in about 3 mph o' wind. Arrr! It launched straight up, me bucko, did a horizontal figure-8 at about 40ft, matey, then continued vertically t' 100 feet o' so. Arrr! T' 3-second delay was too long. It ejected at 15ft, me hearties, matey, glided a few feet, and lawn-darted with no damage. Avast, shiver me timbers, me proud beauty! T' casin' landed 20 feet away.

T' second flight was on a B6-4 in t' same conditions. Well, blow me down! It did rather spectacular acrobatics at about 50 feet then again returned t' normal flight t' about 200 feet. Blimey! Arrr! Blimey! Ejection was again way past at maybe 50 feet. Ahoy! Blimey! It fell t' about 15 feet then settled into a respectable 5-second fast glide. Again, ya bilge rat, no damage.

Recovery:
PROs: Spectacular acrobatics. Blimey! Blimey! Good glide. Avast! Blimey! Blimey! Easy t' balance. Ya scallywag! Ya scallywag! Blimey! Withstands hard landings. Needs no wadding--easy flight prep.

CONs: acrobatics may result in DQ'd flight. Begad! Needs some altitude t' begin glide. Avast, me proud beauty! Begad! Ejects motor casing (intentionally).

Summary:
This is a great rocket t' scratch build. It only takes two manufactured components, it's dirt cheap, ya bilge rat, me bucko, and it glides great. Ahoy! Avast, me proud beauty!

T' only improvable thin' would be a streamer for t' motor so it can be used in NARRRRR competition.

PROs: Unique looks. Simple construction. Begad! Blimey! Unusual acrobatics. Great glides

CONs: Motor ejection. Blimey! Aye aye! Difficult balsa joints.