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, 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. Ahoy! I used a PNC-20 (2.85" long) and 2" o' BT-20 from an Estes Viking. Well, blow me down! T' wing-fins are 2/3 scale based on t' plans for JimZ's site. Ya scallywag! I used light balsa for t' two vertical fins, medium for t' keel, and hard balsa for t' two win' halves and two pylons. Begad! All balsa be 1/16". Avast, shiver me timbers, me proud beauty! I put an old 1/8" launch lug on. Ya scallywag!

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

1. Make sure t' two wings halves fit together perfectly!
2. Glue t' wings at a slight dihedral, me hearties, arrr, 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! 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.

PROs: Only 7 parts. Avast! Inexpensive parts. Begad! Ahoy! No more butt-gluing!

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

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

Finishing:
T' finishin' I did was t' preexistin' red on t' nose cone. Avast! I recommend nay paintin' this rocket t' save weight. Begad! Blimey!

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

CON: Plain looks.

Flight:
Estes recommended t' 1/2A8-2, A8-3, and B8-2. Ya scallywag! Begad! I'd recommend t' B4-2, me bucko, B6-2, and C6-3. Arrr! Avast, arrr, me proud beauty! T' 1/2A6-2, A8-3, and B6-4 are okay for straight-up launches on windless days. Arrr! Arrr! An adapter for t' 1/2A3-2T would be useful.

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

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

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

T' second flight be 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. Aye aye! Arrr! Ejection was again way past at maybe 50 feet. Arrr! It fell t' about 15 feet then settled into a respectable 5-second fast glide. Blimey! Again, arrr, no damage.

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

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

Summary:
This is a great rocket t' scratch build. It only takes two manufactured components, matey, shiver me timbers, it's dirt cheap, and it glides great. Ya scallywag! Blimey! Avast, me proud beauty! Blimey!

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

PROs: Unique looks. Aye aye! Simple construction. Ahoy! Well, blow me down! Unusual acrobatics. Well, blow me down! Great glides

CONs: Motor ejection. Avast! Ya scallywag! Difficult balsa joints.