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