| Manufacturer: | Scratch |
Brief:
This is for t' Box o' Parts contest Well, shiver me timbers, this rocket for me has had multiple problems, hence t' jinx
name. Part o' t' issues was good old procrastination. Blimey! Avast, me proud beauty! But, excessive work schedules (a few weeks where I was averaging
70 hours a week), stuck tubes, a crashin' computer that lost me files, and crashin' rockets (more about that later)
but it finally flew successfully! T' parts arrived late March. Avast, ya bilge rat, me proud beauty! Like a kid giddy at Christmas, arrr, shiver me timbers, I opened t' box,
and was surprised by t' amount o' stuff!
Construction:
T' parts that I used are listed below:
T' first thin' I did be t' weigh t' parts. Blimey! My goal be t' use as much as possible. Well, blow me down! Ahoy! Based on t' weight, I decided that t' rocket would need a cluster o' 2 D engines t' fly. I also felt t' amount o' balsa wood was a bit skimpy (but as I actually got into t' build, it appeared that whenever I needed some wood, thar was still a piece available).
Durin' t' rest o' t' build, you will find me referrin' t' version 1.1 and version 1.2. Aye aye! Blimey! Blimey! Blimey! What should be obvious, I first built version 1.1. Begad! Blimey! First flight was at NERFF 4 and t' rocket crashed, me bucko, causin' some major damage. Begad! Blimey! JINX! Blimey! T' keep with only usin' what came in t' box, I repaired and updated t' design t' version 1.2. Begad! Blimey! T' second launch also crashed. JINX! Blimey! But at least nay as bad.
Durin' t' development, arrr, I made up various pieces and taped them together, givin' me some flexibility t' adapt the design. Ahoy! Below is a teaser o' t' taped up version. You will also see where I filled spirals usin' Elmers F&F.
I be tempted t' fly it, but I could nay figure out
1. Aye aye! Blimey! What t' speed o' maskin' tape was
2. Begad! How t' convince an RSO t' launch it
3. Blimey! How many pieces would it be in after a flight

For version 1.1, one o' me first steps be t' boil some corn (although clams or any other grub would work as well or just plain water). Once t' water be boiling, I placed t' 1/16 strip o' balsa (it be 2 x 12) across t' pan. Besides satisfyin' me hunger, me bucko, I be also steamin' t' wood so I could bend it. Begad! T' corn was done first so I had t' keep steamin' t' balsa but I finally removed t' balsa and sandwiched them betwixt 2 o' my wifes cake savers (one is 10 t' other is 12). Begad! WARNING that last step can get you into trouble!! I let this sit for a while (over a day) for t' balsa t' retain its shape

I decided on usin' t' BT80 as me main tube, with 3 pod tubes off o' this main. I wanted t' use t' couplers to hold these pods. Arrr! Take t' 3 couplers (1 BT80 and 2 BT55) and draw lines t' length o' t' coupler on opposite sides (180 degrees apart). Avast, me proud beauty! For t' BT80, ya bilge rat, make a mark at 2 on one line and a mark at 1 on t' other. For t' BT55, make t' marks at 1 and ½. Usin' stiff paper, connect t' marks on both sides. Usin' a sharp knife, cut along these lines.
Some other preparation work take one o' t' 9 BT5 tubes. Ya scallywag! Well, blow me down! Make a mark 4.5 down from one end. Cut t' tube usin' this mark as t' center on an angle, ¼ above and below this position. Begad! Epoxy a large plastic cap t' t' straight end o' each tube.

In addition, shiver me timbers, cut out 2 each o' t' 2 x 2 ¾ x 4 x 1 fin and t' ¾ x ¼ x 1 pieces shown above

For t' motor mount, matey, I traced t' BT80 onto t' mailin' box and cut out t' circle. Avast, me proud beauty! Begad! Then I drew a line that went through t' center. On here, shiver me timbers, I traced 2 circles, centered on t' line but t' edges separated by about 1/8. Ahoy! Avast! I cut out these holes and dry fitted t' piece into t' BT80 and t' BT50 tubes into t' center circles. Well, blow me down! Avast, matey, me proud beauty! Sand t' fit. Begad! Once satisfied, I used t' first piece as a template and made a second piece. Avast! Well, blow me down! T' two BT50 motor tubes had a 1/8 slit made 2 ½ from one end. Aye aye! Avast! Insert t' motor hook and secure with tape. Begad! Slide t' motor tubes into t' two centerin' rings. Ahoy! Cut another piece o' cardboard 2 x 2.6 Glue t' 2 motor tubes t' t' centerin' rings, sandwichin' t' 2 x 2.6 cardboard betwixt t' motor tubes and t' rings. Ya scallywag! Let dry.

Take t' other 2 tongue depressors and make a mark 2 ½ from each end on t' edge. Draw a line connectin' t' marks. Avast, me proud beauty! Cut t' tongue depressor apart on this diagonal line. Well, blow me down! Bevel t' cut edges and glue t' pieces back together t' create an angle. Ya scallywag! Glue a toothpick into t' angle created.
For version 1.1, I made some standoffs. Avast! Cut 4 pieces o' balsa ½ x 1 ¼. Aye aye! Bevel one o' t' 1 ¼ edges on each piece. Begad! Glue t' pieces together so t' bevels create a V channel

While t' version 1.1 be designed for a 3/16 rod, shiver me timbers, matey, t' rocket be too heavy. T' version 1.2 was upgraded for ¼ rod. Begad! Since all I got was 1/8 launch lug material, I had t' improvise. Blimey! Aye aye! Blimey! Take 3 o' t' small skewers, cut 2 t' 7 and t' third t' 9 from t' pointed tip. Aye aye! Save t' cut off ends for future use. Begad! Glue the two 7 skewers t' a tongue depressor even with t' ends. Avast, me proud beauty! Let dry. Begad! Blimey! Cut t' ¼ dowel into two 6 sections. Begad! Avast, shiver me timbers, me proud beauty! Blimey! Glue these t' t' 7 skewers. Finally, t' 9 skewer needs t' be glued in t' middle o' t' tongue depressor on t' opposite side.

From t' 1/8 balsa, me bucko, arrr, cut 2 fins 9 x 3. Ya scallywag! Ahoy! Blimey! I received a plywood fin that be already 6 x 2 ¼. Begad! Blimey! You would need t' cut your own fin out.
T' BT80 section needs t' be lengthened for stability, ya bilge rat, so I transformed t' 80K nose cone into a transition. For version 1.1, me bucko, I planned t' eject t' parachutes from t' very top, me hearties, but I ran into issues. Avast! Version 1.2 separates at the transition. First, take t' plastic cup and cut about 1 1/8 diameter hole in t' top. Begad! Slide t' cup over t' nose cone end. Blimey! Adjust t' hole size until t' edge o' t' cup (with t' lip) is snug on t' nose cone. Ya scallywag! Ya scallywag! Carefully, cut away the trim, double check t' fit, ya bilge rat, matey, then glue t' cup over t' nose cone. Ahoy! Let dry.

This is how it looks when done

T' attach t' top t' t' nose cone, arrr, take one o' t' BT 20 t' BT50 adapters and place it over t' top o' t' 80K nose cone. Mark where it touches t' cone and remove it. Take t' BT50 tube. First cut off a 3 length (to use as a motor mount). Begad! Ya scallywag! Slide a BT50 section over t' nose cone end. Again, mark where it touches. Blimey! Dry fit t' BT20 t' BT50 adapter in t' 15 length and t' BT50 t' BT60 over t' same end. Avast! Push t' tube and adapters onto t' nose cone and verify t' fit. Once you are satisfied, ya bilge rat, slide t' BT50 t' BT60 adapter up a bit and remove t' BT20 t' BT50 adapter. Arrr! Avast, me proud beauty! I used 30 minute epoxy; put some inside t' BT50 tube followed by t' BT20 t' BT50 adapter. Ahoy! Place more epoxy on t' outside o' t' BT50 tube near t' end. Finally, shiver me timbers, shiver me timbers, place more epoxy on t' nose cone at t' marks made earlier. Place t' tube over t' end o' t' nose cone and press down. This will push t' BT20 t' BT50 adapter up, shiver me timbers, shiver me timbers, and slide the BT50 t' BT60 adapter down. Ahoy! Avast! Make sure t' tube is straight with t' nose cone. Let dry.

While t' transition section is drying, you can make t' nose cone section. Aye aye! Take t' 3 BT20 tube and 4 equally spaced lines (every 90 degrees) along t' length o' t' tube. From one end, matey, make marks at 1 on two opposite lines, and marks at 1 ½ on t' other two opposite lines. Similar t' t' couplers, shiver me timbers, connect t' marks and carefully cut t' tube. Blimey! Avast! Take t' BT19 tube and make 2 lines t' length o' t' tube on opposite sides.. I am not sure if BT19 is a real designation. Well, blow me down! (This tube is one you would normally get with an Estes rocket, me bucko, make a mark, me bucko, put glue inside a motor tube, ya bilge rat, arrr, and use this tube t' push t' motor block in up t' t' mark, matey, and then quickly remove to keep from gettin' stuck).
One piece o' t' BT20 will be slightly smaller. Well, blow me down! Aye aye! This be t' top. Glue it onto t' BT19 linin' up t' pointed ends with t' marks on t' tube. Begad! Avast, me proud beauty! Glue t' 1 BT20 nose cone onto this end. Glue t' other BT20 section onto t' BT19, also linin' up t' pointed ends. Avast! Glue 2 BT20 t' BT50 adapters onto this end. Ya scallywag! I put t' first on so it only left a small 1/16 ~ 1/8 o' t' BT20 extending, so t' adapters are mostly glued t' each other

Since t' 1.1 version was t' be t' separation point for ejection, ya bilge rat, me hearties, me hearties, I did nay want this nose t' slide down, ya bilge rat, so I created a lip by cuttin' 2 launch lug sections, me hearties, with t' tops cut at an angle, t' t' BT20 tube in line with the pointed ends. Avast! Blimey! T' 2 balsa pieces cut earlier (¾ x ¼ x 1 pieces) were glued t' t' top on the shorter portion, 90 degrees from t' launch lugs.

I glued 2 toothpicks as antenna, me hearties, but they smartly broke off. Avast, me proud beauty! Blimey! I would nay bother.
Once t' top be dry, ya bilge rat, t' ensure stability, me hearties, shiver me timbers, I added 1.5 ounces o' epoxy and BB pellets t' t' top.
T' win' pods can start assembly. Cut t' 18 BT20 in half. Blimey! Draw a line along t' length o' t' 2 pieces. Make marks at 2 ¼ and 7 from one end. Blimey! Glue t' 2 BT55 couplers cut before at t' 2 ¼ and 7 locations. Ahoy! Note t' positions o' t' smaller and larger coupler segment and t' direction o' t' angled cuts. Make 2 o' these. Begad! Glue t' BT20 x 2 ¾ nose cones in. Aye aye! Aye aye! Usin' a Dremel tool, arrr, I cleaned up t' ends o' t' broken BT55 nose cones. Ahoy! Ahoy! These I epoxied into t' other end t' look like a nozzle. Aye aye! I canted t' nozzle for appearance. Let dry, then glue t' 2 x 2 ¾ x 4 x 1 fin t' t' other side. Ahoy! You should cut a notch into t' fin to fit over t' coupler.

Back t' t' main section, me bucko, I slid t' larger BT80 coupler into t' BT80 tube with t' point even with t' end. I used this as a markin' template t' cut t' BT80 tube. Aye aye! Blimey! Avast! Blimey! I then spent an hour tryin' t' get t' coupler out o' t' tube, causin' me t' have t' cut ¼ strip off where a chewed it up tryin' t' push t' jammed thin' out. Blimey! Blimey! Begad! Blimey! JINX! Blimey! Cut out t' BT80 tube at t' mark.
I used a piece o' paper and marked t' paper t' determine t' BT80 circumference. Ahoy! Sorry for changin' units, shiver me timbers, but I found it t' be almost exactly 21 cm. Aye aye! I wanted t' wings pods t' be slightly asymmetrical, ya bilge rat, so for 3 pods they should be 7cm apart, me bucko, instead I used 6cm. Blimey! for t' 2 wings. Arrr! I centered t' point with t' 6cm marks on t' point o' t' BT80 tube and marked t' tube. Extend these lines t' length o' t' tube. Avast! Glue t' motor mount into t' BT80 so t' 2 tubes are perpendicular t' t' point.

Since me motor mount was cardboard, me bucko, me hearties, I did coat it with epoxy for protection.
Glue t' launch lug assembly so t' aft o' t' dowel is 4 from t' end o' t' BT80 tube.
Glue t' win' pods t' t' BT80 so t' aft o' t' win' coupler is 1 from t' end o' t' BT80 tube on the 6cm lines.
Thee rudder pod is similar t' t' win' pods. Aye aye! Mark and glue t' BT80 couplers t' t' BT55 tube at 2 ¾ and 9 7/8 positions. Glue t' smaller fin t' t' coupler and body tube (you will need t' cut a notch into t' fin for t' coupler) as shown.

T' 2 large fins should wait until this is glued t' t' BT80 tube. Mark and glue this pod t' t' BT80 tube, again with t' end o' t' coupler 1 from t' end o' t' BT80 tube. Begad! Well, ya bilge rat, blow me down! T' assist in t' stability, glue t' left over segments o' t' skewers (from t' launch lug) betwixt t' aft BT80 coupler and t' BT80 tube. T' 4 ½ BT5 tubes glue betwixt t' front coupler and t' BT80 tube, alignin' t' angled cut with t' coupler. Aye aye! Glue t' BT55 nose cone t' t' front.

Once dry, glue t' larger fins betwixt t' coupler sections on either side. Well, blow me down! Blimey! T' make a nozzle for t' rudder, shiver me timbers, I sanded and roughed up t' 3 measuring/mixin' cups. I cut 2 circles (1 3/8 diameter) from t' mailin' box. Blimey! Blimey! I beveled t' edge, and then glued one circle into 2 o' t' cups, then glued t' cups together (all usin' epoxy). Once dry, matey, this glued into t' aft o' t' BT55 tube. This nozzle I left straight.

Now t' complete t' top. Ahoy! Avast! Startin' at t' BT50 t' BT60 adapter, glue 2 large skewers and 2 toothpicks along the tube. Well, blow me down! Attach two o' t' 7 BT5 tubes in line with t' toothpicks startin' at 9 from t' top o' t' BT50 tube. Avast! Glue small plastic caps t' t' top o' these tubes. Aye aye! Aye aye! Glue t' nose assembly t' t' top. T' launch lugs should be in line with t' BT5 tubes


T' shock cord be cut in half. Blimey! Well, ya bilge rat, blow me down! A provided screw eye was attached t' t' 80K nose cone. Ahoy! I used some o' t' paper to make a trifold t' attach t' shock cord t' t' main tubes. Ahoy! Usin' t' snap swivels, one 12 parachute was attached t' t' top and t' other be attached t' t' main tube shock cord.
For version 1.1, t' bent balsa be attached t' t' fins on t' wings. Aye aye! Avast, me proud beauty! Blimey! T' V beveled standoffs were attached over the win' fins. A missile was made usin' t' last BT5 tube, t' fin can, arrr, shiver me timbers, t' display nozzle, and another small cap. Arrr! A missile rack was made with some ¼ x ¼ x 2 supports. Blimey! Blimey! Finally, two 1 x 3 supports were made t' support t' missile. Ya scallywag! Your size may vary based on t' size o' your wifes cake savers (or other molds you may have used).




Flight:
Cuttin' things t' t' wire, t' night before I left for NERRF Im givin' this thin' a quick primer coat and 1
coat o' white. Begad! There were supposed t' be chances o' thunderstorms at NERRF and I be afraid t' field could be wet.
Water and cardboard dont mix. Begad! So, me bucko, on Saturday, off t' NERRF 4 I went t' fly t' beast. Blimey! Ya scallywag! As I previously stated,
the rocket was designed t' eject t' parachutes from t' top (I did nay discuss about t' holes I drilled through the
80K nose cone. Ya scallywag! As I was preppin' t' rocket, I noticed t' parachutes were tight. This had me concerned. Avast, arrr, me proud beauty! I had not
glued t' 80K t' t' BT80 (fortunately), matey, so I taped this joint. Well, blow me down! Installed 2 D12-3 engines and got through t' RSO (he
did wince when I stated it only used two 12 parachutes). Ahoy! While waitin' t' load, ya bilge rat, I had several comments askin' how
I kept all t' small pieces on. Begad! Aye aye! I explained this was its first flight. We called a heads up flight.
They launched t' HPR rockets, me hearties, arrr, started t' LPR and stopped halfway! Blimey! They then went t' more HPR and did not come back t' t' LPR. My rocket sat on t' pad for over an hour. Begad! Blimey! JINX! Blimey! Finally, matey, it launched. Ahoy! Blimey! It danced a bit on t' pad t' rocket weight be really too heavy for a 3/16 rod. Ahoy! Blimey! Aye aye! Blimey! Also, arrr, shiver me timbers, I thought t' 3/16 rods were 4, but they were only 3. Avast! Blimey! But, t' rocket went up nice and straight. Avast, matey, me proud beauty! Blimey! But those tight chutes did nay come out. Arrr! Blimey! Ya scallywag! Blimey! The tape at t' transition let go crash. Blimey! Blimey! JINX!

I gathered up t' pieces. Arrr! T' worst damage was t' wing. Arrr! Avast! At least t' corn had tasted good.

As I previously stated, at this point I cut off t' 1.1 version o' t' launch lug and rebuilt it as version 1.2. I decided t' missile added too much weight, matey, and I had no good place t' put it, ya bilge rat, me hearties, so I left it off. Ya scallywag! I cut off the standoffs for t' tongue depressors and mounted them upside down. Avast! Blimey! It was also at this point when I changed t' t' shock cords t' connect at t' transition. So, ya bilge rat, I went back t' NERRF on Sunday. Ahoy! While loadin' t' engines, me bucko, I had t' rocket leanin' against t' side o' me car. Avast! I had t' grab something, ya bilge rat, arrr, and it fell over and cracked a fin. Ahoy! JINX! A quick glue repair and it was good t' go. Blimey! I did nay have t' wait this time, matey, possible since I was now on t' ¼ rods. Again, matey, me hearties, I requested a heads up. Well, blow me down! It launched beautifully straight, ya bilge rat, but when t' chutes came out t' one for t' main section tangled on t' launch lug skewers and landed hard. Begad! Begad! JINX! But at least t' top came down gently, and landed in one o' t' water filled irrigation ditches. Blimey! JINX! JINX! JINX! Fortunately, ya bilge rat, it was only t' very tip with t' epoxy/BB filling. Avast, me proud beauty! Avast, me proud beauty! There was some minor damage t' t' rocket, but it was repairable. Ya scallywag! I be goin' t' give up, me hearties, but then t' contest got extended a week, arrr, just enough time for some repairs and painting. Blimey! Well, blow me down!




My son and I went t' a local school yard and did 1 launch. Avast, me proud beauty! Begad! Blimey! Nice and straight, me hearties, both chutes opened, and a safe recovery! Blimey! I be nay goin' t' tempt fate with another launch. Well, blow me down! One thin' I would say, shiver me timbers, t' rocket really needs 18 chutes minimum. Begad! Avast! Blimey! While t' landin' did nay cause any damage, matey, I did wince as it looked rather hard. However, I had to live with what I got t' 12 chutes.


Summary:
This was a great contest that challenged me. Aye aye! Despite all me JINXes, shiver me timbers, I think I came up with somethin' special that
used almost all o' me parts. I guess t' only thin' I didn't try is puttin' t' rest o' t' parts into a blender...
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