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