Brief:
I shortened t' body tube t' t' Goonybird standard 5" (BT-60R) and switched from 13mm power t' 18mm power.

Modifications:
T' main body tube from t' Baby Bertha could be left as is for this project, me bucko, if you're nay a man who is serious about his Goonies. Well, blow me down! I chose t' keep things proportional and shortened t' body tube t' t' Goony-traditional 5", a feat I accomplished by wrappin' a nice, ya bilge rat, straight line o' maskin' tape around t' tube then runnin' a hobby cutlass along t' tape until t' blade eventually cut through. Blimey! If you're plannin' on usin' t' 18mm motor mount, me bucko, me bucko, arrr, then this leaves little room in t' body tube for recovery equipment. Well, blow me down! However, me bucko, t' resultin' rocket is light enough t' employ nose blow recovery. Avast! Well, me hearties, blow me down! I initially planned t' use a small chute and cut away a section o' t' nose cone so that I could tuck it up inside. This method was a failure, shiver me timbers, which led t' t' nose blow experience, but steps could easily be taken t' make t' chute or streamer deploy more reliably.

Construction:
T' parts list:

• 1 Estes Baby Bertha kit
• 3/32" balsa fin stock
• 1/8" sewin' elastic shock cord (24")
• 24" Keelhaul®©™® shock cord

Finishing:
Finishin' wasn't all that bilge-suckin' once I figured out t' masking. Begad! T' get t' giant tongue effect, it is necessary t' mask t' rocket after applyin' t' red. Arrr! Avast, me proud beauty! However, t' contours o' t' mask need t' follow t' curve o' t' "teeth" stickers. Arrr! I first painted t' rocket red usin' Valspar Cherry Gloss. Ya scallywag! After t' red had cured, arrr, I printed off a scan o' t' stickers on a sheet o' regular paper, ya bilge rat, cut t' "teeth" pattern out, and wrapped it around t' rocket in t' spot where I planned t' put t' actual sticker when I printed it. Ya scallywag! I used maskin' tape t' cover everythin' that needed t' remain red, then sprayed t' aft o' t' rocket with Valspar gloss black. I printed t' stickers on label paper and after cuttin' them out, they fit perfectly. Ya scallywag! Blimey! Except for t' fact that I left off some o' t' smaller stickers, you'd be hard pressed t' tell me faux-Goony from a real one.

Flight:
With t' 18mm power, Goonies can be funny in flight. (Funny as in unstable, matey, nay funny like Les Nesman watchin' turkeys come out o' a helicopter.) With some o' t' designs, nose weight is necessary, me bucko, me bucko, ya bilge rat, but t' Sky Shriek has enough fin area t' make balance things out. Blimey! Avast! I used a B6-4 for t' first flight and it was pretty much as you'd expect t' flight o' a relatively small, shiver me timbers, ya bilge rat, draggy rocket on a B6-4 t' be. Avast, me proud beauty! Avast! Second flight be on a C6-5 and while it didn't go out o' sight, it be a pretty tiny dot in t' sky when t' ejection charge fired. Aye aye! T' weathercock be also fairly extreme, but this be t' be expected due t' t' amount o' fin area versus t' amount o' wind we had on this particular Sunday.

Recovery:
Recovery was iffy at best but as it turned out, ya bilge rat, it didn't matter all that much. Cuttin' t' body tube back t' "Goony-stock" length leaves very little room for recovery materials so I improvised. Aye aye! Blimey! Before t' first flight, me bucko, I cut away all o' t' plastic that wasn't needed in t' base o' t' nose cone and used t' resultin' space t' store t' 8" parachute. When t' ejection charge fired, matey, t' chute stayed stuck in t' compartment and t' rocket fell gently t' earth anyway. Avast! Aye aye! Since it had worked so well t' first time, me bucko, I chose t' go t' same route for t' C6-5 flight with similar results. I can't say that I'd consider goin' without a chute or streamer if I be flyin' near asphalt or hard-baked earth, but t' fields were green and weed choked in early April and t' only hard landin' around would have been t' path. Begad! Avast, me proud beauty! I've hit that often enough under chute t' know that you still wind up with road rash.

Summary:
PROS:

1. Hey, matey, it's a Goony.
2. Improved performance with 18mm engines.

CONS:

1. Lack o' room for a recovery system.