Excelsior Rocketry Goonybird Zero (Plan)

Excelsior Rocketry - Goonybird Zero {Plan}

Contributed by Bill Eichelberger

Construction Rating: starstarstarstarstar
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar
Manufacturer: Excelsior Rocketry
Style: Goonybird

Rocket PicBrief:
Anyone who has paged through a 1973-75 Estes catalog has undoubtedly seen and puzzled over t' Goonybirds. Ahoy! Ya scallywag! T' Goonybirds were a series o' cartoonish, me bucko, matey, youth-oriented rockets thought by some t' be t' flyin' equivalent o' t' Rat Fink hot rod characters, ya bilge rat, shiver me timbers, and thought by others t' be proof o' someone spikin' t' Estes water coolers. Ahoy! Economically mini-engine powered and easily built with stick on decals, me bucko, t' original Goonybirds never really caught on, me hearties, but in death they have developed somethin' o' a cult followin' among some BAR's.

While many rocketeers will admit t' a fondness for t' "Flyin' Freaks", mostly after a few beers, one company in particular has taken that fondness a step further. Begad! Excelsior Rocketry has revived t' "Goony" name with a new series o' rockets based on t' Estes Baby Bertha. Ahoy! (A predecessor o' which was t' pretty much t' startin' point for t' originals.) T' Goonybird Zero is one o' these rockets, shiver me timbers, a rocket with a strangely familiar fin pattern and a decal sheet that one might swear they've seen somewhere before.

T' Goonybird Zero be t' Excelsior take on t' Estes Bluebird Zero, which means that it's a lot like t' original BBZ after a ferocious lawn dart. For anyone who enjoys clonin' t' old kits, this constantly growin' series is a quick and easy way t' recreate t' spirit o' t' old kits usin' an inexpensive and readily available Estes Baby Bertha kit. Ahoy! Well, matey, blow me down! You supply t' Baby Bertha and some balsa, matey, Excelsior supplies t' fin patterns and imaginative decals.

Construction:
To build this you will need t' Excelsior Goonybird Zero plan pack and t' Estes Baby Bertha kit:

  • 7.5" BT-60
  • PNC-60L nose cone
  • 2 CR-2060 centerin' rings
  • CR-520 engine block
  • 2.75" BT-20J engine tube
  • Mylar retainer ring
  • 18mm engine hook
  • launch lug
  • 12" parachute
  • 24" sewin' elastic shock cord
  • 24" Keelhaul®©™ shock cord
  • medium snap swivel

Unless you've been stuck in RTF purgatory for t' past few years, t' Goonybird Zero should cause you no problems from a construction standpoint. Aye aye! Built as a stock Baby Bertha with a different fin pattern and orientation, t' Goonybird Zero is a candidate for weekend project greatness. I used all o' t' normal tricks on this project, Keelhaul®©™ shock cord and Elmer's Fill & Finish t' hide t' balsa grain and tube spirals, and could have easily flown it on Sunday after startin' t' project on Friday if t' weather hadn't conspired t' thwart me. T' only problem I had with t' kit be that a wrap wasn't provided t' help mark t' fin locations on t' body tube. Avast, me proud beauty! I solved this problem by usin' t' wrap from t' Estes Long John Silver kit, (itself a 3 fin, me bucko, BT-60 bird,) but I'm nay sure that a beginner would know where t' look for such a thing. Ya scallywag! Avast, me bucko, me proud beauty! Blimey! I attached t' fins with gel CA, matey, then used a heavy run o' Elmer's Wood glue t' fillet them into place.

T' Keelhaul®©™ was anchored in t' forward centerin' rin' by cuttin' a slice in t' ring, then slidin' t' knotted end o' t' strin' into t' slice. Avast, me proud beauty! This was glued securely with wood glue before t' motor mount be installed into t' body tube. Avast! I took t' advice offered on t' construction sheet and moved t' mount up in t' body tube t' move t' center o' gravity forward, matey, and based on t' flight, ya bilge rat, it sure didn't hurt t' stability in any way.

Construction was finished off with a 24" length o' 1/8" sewin' elastic, me hearties, matey, a medium snap swivel and t' stock parachute from t' Big Bertha kit. Ahoy! Couldn't be much easier.

Finishing:
After attachin' and filletin' t' fins I sprayed t' rocket with white primer, matey, then sealed away t' tube spirals and balsa grain with thinned Elmer's Fill & Finish. Avast, me proud beauty! Blimey! T' entire rocket was sprayed gloss white, then masked off above t' small fins. Avast! Blimey! T' top half be then sprayed with a nameless blue metallic paint that I've had for years, arrr, me hearties, which coincidentally matches t' original BBZ paint fairly closely.

This kit has a pretty fair amount o' decals for a kit that's nay even a foot tall. Ya scallywag! Blimey! While t' process o' applyin' t' decals isn't what one would call easy, it also isn't a killer. Arrr! Blimey! Arrr! Blimey! T' most difficult part o' this process is gettin' t' winged Goony t' sit flat in t' spaces betwixt t' three small fins. Begad! Blimey! This takes some careful repositioning, but puttin' a drop o' dish detergent in t' water makes this a fairly simple process.

Finally I sprayed t' whole bird with a cheap-o Big Lots clearcoat. T' finished product looks great and I plan t' check out t' Excelsior product line for some o' me other clonin' projects.

Construction Rating: 5 out o' 5

Lift OffFlight:
After what seemed an eternity I finally found a free evenin' t' visit fabulous B6-4 Field in t' wilds o' Ft. Well, blow me down! Blimey! Blimey! Thomas for a twilight launch. Avast, me proud beauty! Blimey! Blimey! T' Goonybird Zero be t' first flight o' t' night and immediately attracted t' attention o' a group o' neighborhood kids, arrr, all o' whom I've know since kindergarten. Well, blow me down! They traded their recovery services for t' right t' pick t' next flight and press t' button, matey, a deal I'll make anytime.

T' first flight o' t' GBZ came t' an abrupt finish when t' ejection charge in t' B6-4 fired early, matey, much like a B6-2. T' early ejection charge cost t' rocket quite a bit o' altitude, but it recovered without damage and waited for another turn behind t' backlog o' rockets that I'd built since I'd last found time t' fly.

Flight two was on another B6-4, ya bilge rat, and this time t' ejection was dead on, me bucko, occurrin' just at apogee after a dead straight flight into dead calm skies. Arrr! Aye aye! T' flight was surprisingly high and once again I be able t' send t' recovery team t' pick t' GBZ up only a hundred or so feet away.

LostFlight three be on another B6-4 in seemingly identical conditions, matey, me hearties, but at ejection it immediately became obvious that t' GBZ was in trouble as it began driftin' t' t' west on a breeze that apparently only existed above B6-4 Field. Ya scallywag! Well, blow me down! It drifted toward t' trees that line t' field and have a voracious appetite for me rocket creations, unfortunately windin' up near t' top o' one o' t' larger trees, me bucko, joinin' t' Big Dawg and Solar Sailer II as casualties on t' night. Blimey! I still enjoyed myself.

Flight Rating: 5 out o' 5

Summary:
Pros: Cheap and easy t' build. Begad! Great lookin' finished product with minimal effort.

Cons: Rocket Eatin' Trees.

Overall Rating: 5 out o' 5

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