| Manufacturer: | Scratch |
Brief:
This has been an interestin' year for me. Ahoy! Arrr! I call it "Rocketry On A Budget". Aye aye! Ahoy! A box o' parts be donated by
Jonathan Stewart from Plano Texas. Avast, me proud beauty! Begad! I thank him for his generosity. Begad! Aye aye! I received me box on March 4, 2009.
Construction:
An inventory o' t' parts:
Some o' t' tubes have been pulled from older painted models. Arrr! There is some epoxy glue residue and paint. Aye aye! I'll have t' cut off some o' t' rough edges and fill some imperfections.
With so many small, arrr, decorative pieces sent, ya bilge rat, me bucko, it made t' best sense t' build a sci-fi fantasy spaceship.
It seemed thar be too many parts in t' box! Rather than just gluin' everythin' t' t' main tube, I'll try to combine as many (recognizable) parts into sub-assemblies and then attach them t' t' model.
Most all construction is documented on the PDF instructions and patterns. Avast! Blimey! Arrr! Blimey! All parts listed above are referenced in t' file by t' same reference letter(s), too. Ahoy! Blimey! This PDF is the Assembly View
I had opened t' box when everythin' had first arrived. Aye aye! I be a little overwhelmed. Ya scallywag! I wanted t' incorporate as many interestin' parts as possible but t' try and do it with some sort o' consistent decorum. Blimey! I also had the "Surprise Items" t' consider. Ahoy! Avast! For instance, how do I add four popsicle sticks? They have t' be recognizable but still stay with t' flow o' t' design.
I visualized many o' t' body tubes and one adapter together on t' floor. From t' aft forward: T' large diameter BT-80 "engine compartment" (K) will connect t' t' trimmed Yellow Plastic Dome (GG). Avast! Avast! Larger coolant "vanes" (UU) will be cut t' fit t' dome and tube transition. Arrr! This would continue t' t' BT-55 (F). Next is the Plastic 55/60 adapter.(P) T' ends will be trimmed and coated with epoxy t' protect t' plastic interior from the ejection charge. Blimey! T' adapter connects t' t' BT-60.(J) This tube is slotted. I'll add 2 forward fins and "guns" (X) here. T' "Street Marker Conical Cone" (V) will top off t' model. Blimey! Avast! It'll require heavy fillin' and trimmin' t' work.
I re-drew t' model for t' third time. Avast! I played with variations and came up with "Butterflied" rudder tips. Avast! Begad! T' wings would have down turned win' tips. Arrr! "Engines" (M, ya bilge rat, N, matey, & A) will fit into t' angle formed by the win' tips.
A ram-jet style nose cone was made out off part Q. I cut ½" off t' tip with a razor saw
then sanded t' cuts flat with a sandin' block. Well, me hearties, blow me down! Blimey! More sandin' followed until it achieved t' right visual balance. Aye aye! Arrr! Blimey! This
will be joined t' a shortened BT-5 (A) and be glued t' t' middle o' t' rudder's butterflied top. Blimey! Avast, matey, me proud beauty! Blimey!
T' balsa cone (S) was split down t' middle then sanded t' t' contour o' a BT-60. Begad! Aye aye! These would be used t' make side engine intakes on both sides o' t' rudder. Begad! Avast! T' BT-20 (C) was split lengthwise down t' middle t' fit t' two sides from t' split nose cone.
1-1/4" was cut off t' BT-56 (G) t' make a coupler. Blimey! Ya scallywag! It was split lengthwise and slid it into t' BT-55. Avast, me proud beauty! Avast, me proud beauty! The overlap was marked then trimmed t' fit snugly. Begad! It took some "shimming" t' make these two (close diameter) tubes fit. Arrr! Begad! T' butt-joint was hidden under t' aft tubing.
T' Red plastic Sanford Pen Casin' (KK) be cut into thirds. Begad! Two were centered in t' front o' t' win' engine assemblies. Well, me bucko, blow me down! T' remainin' third piece would go out t' end o' t' rudder tube.
T' 6-½" long BT-5 tube (A) was cut into equal thirds. Blimey! I needed two win' "engine tubes" and one rudder ramjet tube.
I used t' four white plastic engine nacelles on either side o' t' engine tubes. Avast! Blimey! Well, matey, blow me down! Blimey! T' front end was cut
down, ya bilge rat, arrr, ya bilge rat, I didn't want an exhaust nacelle on t' front o' t' engine.
Centerin' rings were cut out o' t' shippin' box for t' stuffer tube inside t' aft BT-80 tube. Well, blow me down! Blimey! Begad! Blimey! T' interior BT-55 tube was offset t' t' top o' t' BT-80. Ya scallywag! Blimey!
T' Stuffer tube was made out o' two pieces o' BT-55 and 56 (parts F and G) joined by a coupler made from a short piece o' t' supplied BT-55. Ahoy! Ya scallywag!
T' engine will be a D12 fittin' into a BT-50 motor mount tube. Avast, me proud beauty! (Part E). Ahoy! A 3" piece o' BT-50 be cut for an engine mount. Ahoy! T' BT-50 be notched for t' suppled engine hook (U). Begad! Begad! T' end o' t' hook extended 1/4" beyond the engine mount tube. Avast, me proud beauty!
There be plenty o' centerin' rings but no 50/55 rings. Well, blow me down! Blimey! From t' shippin' box, I made a 1" wide centering ring. Well, blow me down! Blimey! I kept wrappin' t' cardboard strip round until it made a slip fit into t' BT-55 stuffer tube. Well, blow me down! Blimey! I'll lay white glue t' plug t' open holes in t' corrugated cardboard.
There be no Keelhaul®©™®, so I made a standard Estes style tri-fold mount.
T' engine mount be glued inside t' shorter BT-55 tube until t' BT-50 engine tube be even with t' aft of the 55 tube.
It was obvious t' cut t' cone (V) down t' fit t' BT-60 upper tube. I decided t' cut it at an angle so t' tip would be angled down, matey, much like t' old SST Jetliner when it was in flight. Well, blow me down! Well, blow me down! However, after trimmin' it looked too saggy at t' front. Arrr! Avast! I trimmed and sanded t' tip back at an angle. T' hole in t' nose cone tip was now an enlarged oval. I cut a piece o' scrap BT-55 (H) and CA'd it t' t' tip. Blimey! T' edges were sanded down t' match t' new conical shape. The nose cone adapter be easier than I would have thought. Well, blow me down! I took a piece o' BT-60 (I) and split it. Avast! Avast! It was set into the upper BT-60 and t' overhang "tab" was CA'd in place. T' adapter be simply glued t' t' cone edge, centerin' it all around. Ya scallywag!
T' transition dome (GG) was t' hardest t' cut out. Well, blow me down! Even after cuttin' and makin' an inside transition angle, the match wasn't close enough for me. Ya scallywag! I built up t' open gaps with strips cut from scrap BT-55. Begad! I sanded t' fill pieces smooth with sandpaper wrapped around a BT-50 tube scrap.
T' form t' 55/60 plastic transition (P), t' original 3" long BT-60 was cut off t' transition piece. Arrr! I coated t' inside with 15 minute epoxy t' protect it from t' ejection charge.
T' upper parachute tubin' (J) be a left over tube from a kit, me bucko, already laser slotted for through t' wall fins. I'll have t' patch t' holes and fill t' seams. Begad! BT-60 scrap (I) was cut t' 1-½" t' make an inside tube coupler. Aye aye! This gives an inside wall t' glue t' patch pieces onto. After t' coupler was glued in place, scrap body tube strips were white glued in t' slots. Begad!
Three transitions vanes were cut from t' 1/8" basswood (UU). Begad! Two transitions had t' be matched, matey, ya bilge rat, the
curved aft dome (GG) and t' upper plastic transition.(P) Also, on t' two smaller outside vanes, t' dome angle had
to be sanded t' an angle t' match t' curve. Blimey! This and t' dome were t' hardest parts o' t' build.
Two wings, arrr, rudder, and win' tips were cut from t' 1/8" basswood. Avast! (TT)
T' black plastic angles (II) were used for t' win' cannon housings. Blimey! I made "plugs" out o' laminated scrap 1/8" basswood. Aye aye! T' white Star Wars "guns" (00) were shortened and glued into 1/8" holes drilled in t' plugs.
T' plastic candy package (PP) be sanded t' t' BT-80 body tube contour. Well, blow me down! I used only ½" o' two ends of t' BT5 pod assemblies(L). Avast, me proud beauty! They were both sanded t' t' BT-80 curve and t' flat front o' t' candy package. T' assembly was centered t' t' bottom o' t' BT-80 then super glued in place. Aye aye!
Finishing:
Finishin' t' rocket, I did t' best I could without too much complex masking. Avast! Avast! Blimey! T' built rocket was painted gloss
white, t' aft engine compartment painted black. T' popsicle stick vanes were first painted white, matey, then glued onto
the black engine tube.
I had plans for usin' many o' t' decals that were sent. Aye aye! While thar were plenty o' decals
included, shiver me timbers, most all were older and unusable. Arrr! Avast! Some rolled off t' paper onto themselves, me hearties, me bucko, others cracked. Aye aye! Begad! I know thar are
decal solvents and repair solutions available, arrr, but I didn't have time t' order and fly t' model by t' deadline. Blimey! I
wanted t' use what was supplied. Blimey! Ya scallywag! I did t' best I could without too much complex masking. I'm nay complaining, Mr.
Stewart sent plenty o' parts for a fun build. Begad! Ya scallywag!
T' first time, shiver me timbers, I pieced together some yellow decal stripes on t' wings and rudder. Avast, me proud beauty! Others stayed together enough for t' rolled up edges t' be tacked into place with white glue. Ya scallywag! Arrr! As t' decals dried, matey, they pulled up on the edges. Ahoy! I tried re-tackin' them down again, shiver me timbers, but t' next day they lifted again. Arrr! I let things sit for a few days while I tried t' think o' a solution. I removed most o' t' lifted decals.
On t' USPS Priority Mail Box were names and logos. Arrr! Begad! I lightly scored t' eagle logo, ya bilge rat, names, and navy blue stripes with a razor blade. Well, blow me down! Aye aye! T' thin top layer o' paper was peeled off. Avast, me proud beauty! Usin' t' USPS logos changed t' theme and back story of t' model.
I lightly wet t' peeled paper back with a sponge and carefully scraped off what be left o' t' brown cardboard layer and glue.
From thar be was pretty simple, a thin coat o' white glue and placement. Aye aye! I did lay some water on t' body tube where t' paper art was t' go. Arrr! It helped with t' positionin' as I could slide t' glued paper into position.
Flight and Recovery:
T' first launch was scheduled for June 6, 2009. Aye aye! T' weather was clear, but t' launch area be waterlogged! Many
days o' rain in central Florida had left t' launch field too wet and unusable.
I usually don't fly with t' "Big Boys" in Bunnell, me bucko, ya bilge rat, Florida, ya bilge rat, me bucko, me hearties, but I went t' t' NEFAR Half-Blast for the first flight on June 13. Aye aye! Blimey! Blimey! Blimey! I flew two small test models before t' Postal Express. T' loadin' was typical, matey, me bucko, a D12-3 and wadding. I was nervous as it be a heavy build with lots o' nose weight.
Launch was show and straight maybe t' 350 feet. Begad! I be concerned t' angled nose cone might effect t' vertical trajectory, but it didn't seem t' affect it at all. Blimey! It slowed and blew it's chute just prior t' apogee. Ahoy! Begad! Someone said there was a zipper. There couldn't be a zipper, thar wasn't any Keelhaul®©™® to cut through t' body tube. Avast! Ya scallywag! T' shock cord be hangin' from about halfway down t' body, nay from t' nose. Ya scallywag! It was hung up around t' toothpicks on t' center o' t' BT-55.
Upon landing, t' nose cone broke cleanly away from its adapter. Begad! One o' t' forward fins was gone, broken above the fillet joint. Blimey! T' snap back o' t' ejection must have hit t' forward fin. Avast! Both are repairable, ya bilge rat, arrr, and I'll fly it again at t' June 27 R.O.C.K. launch. Ya scallywag!
All repairs were made for t' local NAR, shiver me timbers, me bucko, me bucko, ROCK Section o' Orlando launch on June 27, me hearties, 2009. Avast, me hearties, me proud beauty! As always, shiver me timbers, I grabbed a smaller rocket and did a low level test flight t' get a feel for t' field and conditions. Ahoy! Begad! I noticed t' plastic dome on t' Postal Express transition was loose, and I hit it with a few drops o' CA glue. Aye aye! T' remembered t' earlier flight on a D12-3 thinkin' ejection be a hair early so I loaded up a D12-5.
Launch was slow and ejection occurred after apogee, matey, on t' way down. T' chute ejected but be wrapped
once around t' shock cord. Arrr! Ahoy! It never fully opened but slowed t' descent with no damage.
A short rain held up launchin' for 15 minutes. Blimey! I loaded up again, this time with a D12-3. This seems t' be the best available engine. Ahoy! If someone were t' make a D12-4 engine it would be close t' perfect. Begad! Avast, arrr, me proud beauty! This be t' best launch yet. Well, blow me down! Straight up, full parachute and no damage on landing.
Summary:
PROs: Lots o' fun buildin' with supplied parts. Quite a learnin' experience. Blimey! Begad! When doin' an out-of-the-ordinary build,
you change directions many times and pick up a few new techniques along t' way.
CONs: Some small parts break off. Arrr! Blimey! If I had t' resources, it would have flown higher with an E or F engine.
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