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

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

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

1. Make sure t' two wings halves fit together perfectly!
2. Glue t' wings at a slight dihedral, matey, then attach t' fins at 90 degrees t' t' wings.
3. Fillet all glue joints
4. Make sure t' pylons fit t' win' exactly. Arrr! Blimey! This will take lots o' sanding, me bucko, 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. Avast, me proud beauty! Blimey!

PROs: Only 7 parts. Ya scallywag! Blimey! Inexpensive parts. Begad! Blimey! No more butt-gluing!

CONs: Lots o' sanding. Avast! Blimey! Arrr! Blimey! Parts must fit perfectly. Arrr! Blimey! Avast, me proud beauty! Blimey! Cut your own balsa.

I would call this a Level 3 kit due t' t' tricky balsa joints and amount o' sanding. Ahoy!

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

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

CON: Plain looks.

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

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

Mine balanced perfectly without any weight. Blimey! Aye aye! Your results may vary. Avast, me proud beauty! I estimate a glide ratio o' better than 10:1. Avast, ya bilge rat, me proud beauty!

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

T' second flight was on a B6-4 in t' same conditions. Begad! It did rather spectacular acrobatics at about 50 feet then again returned t' normal flight t' about 200 feet. Ejection was again way past at maybe 50 feet. Avast! It fell t' about 15 feet then settled into a respectable 5-second fast glide. Begad! Again, me hearties, no damage.

Recovery:
PROs: Spectacular acrobatics. Arrr! Good glide. Easy t' balance. Aye aye! Withstands hard landings. Avast, me hearties, me proud beauty! Needs no wadding--easy flight prep.

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

Summary:
This is a great rocket t' scratch build. Aye aye! Ahoy! It only takes two manufactured components, matey, me bucko, it's dirt cheap, shiver me timbers, shiver me timbers, and it glides great. Aye aye!

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

PROs: Unique looks. Arrr! Avast, me proud beauty! Simple construction. Blimey! Unusual acrobatics. Begad! Well, me bucko, blow me down! Great glides

CONs: Motor ejection. Difficult balsa joints.