Manufacturer: | Scratch |
Emergin' from t' wastes o' t' world's largest retailer....
A supernatural occurrence?
A force for good?
A mutated FREAK defyin' all t' laws o' man and nature?
At first glance a tasty treat,
then it roars into t' sky.
It can only be...
(Miracle o' Refreshment From Easily Available Recyclables)
Overview:
M.O.R.F.E.A.R is a unique rocket without a nose cone. Aye aye! Ahoy! Blimey! I be tryin' t' come up
with a "found parts" rocket when I saw a cup sittin' inthe drink
holder o' me mini-van. Avast! Blimey! Heyyyy!! Blimey! Now, matey, I need somethin' more orginal thanthat. Ahoy! Ya scallywag! Blimey! I
don't want t' fly it upside down... Ahoy! Avast! Blimey! I wonder how t' domed lid icee cupswould
do? It turned out that t' hole in t' lid o' t' 20oz. Wal-Mart Icee cupis the
exact outside diameter o' a BT-50. Well, blow me down! Blimey! I was havin' trouble figuringout how t' get
the lid off for recovery deployment when it came t' me. Ya scallywag! Don't take thelid off
at all, just blow it out t' hole. Blimey! Blimey! Since it's a Wal-Mart cup,a blue bag
parachute was t' only real choice. Avast! Avast! Blimey! M.O.R.F.E.A.R. Arrr! flew on 4/1at t' NWARS
launch. Ahoy! Blimey! T' instructions will be complete as soon as I get film with
theconstruction photos back from Wal-Mart.
Parts List:
1 - 20 oz. Avast, me proud beauty! ICEE cup with domed lid and straw
1 - blue plastic Wal-Mart bag 1 - 7 11/16" BT-50
1 - 3" BT-20
2 - CR-2050
1 - Engine Hook
1 - 1/16" balsa sheet
1 - spray paint o' t' "flavor" o' your choice
6 - Paper reinforcin' rings
1 - Shock Cord Elastic
1 - Shroud (suspension) line thread
1oz Plasticine Clay
White Glue (plastic Norbond type preferred)
Gel type CA glue
Access t' a color printer
A single hole hole-punch.
Assembly Instructions:
Remove ICEE contents from cup. Aye aye! Aye aye! (delicious) Thoroughly rinse cup, me bucko, straw, and
lid. Blimey! Well, blow me down! Use t' lid t' create a hole in t' center or t' bottom o' t' cup. Place
the small end o' t' domed lid inside t' lip on t' outside o' t' bottom of
the cup. Aye aye! It should nestle so that a circle can be traced on t' center o' the
bottom o' t' cup. Cut small and sand out.
Advanced note: I used an Olfa circle cutter after markin' t' circle. Arrr! I found
the center o' t' circle by markin' a chord and constructin' a perpendicular
bisector. Ahoy! Well, blow me down! I marked another chord and constructed another perpendicular
bisector. Aye aye! T' intersection o' t' two bisectors be t' center o' t' circle. Well, blow me down! I
know, shiver me timbers, I'm a big ol' math geek. Well, blow me down! T' Olfa cutter worked beautifully making
several light passes.
Place lid on cup and insert BT-50 through holes in lid an cup. Mark tube by allowin' tube t' rest on t' same surface as t' cup and mark tube flush with the lid. Arrr! This allows t' tube t' extend past t' bottom o' t' cup t' the length o' t' lip. Cut tube t' length. This was 7-11/16" for me.
Assemble and install t' BT-20 motor mount and rings in t' BT-50 tube. This is just like every other 18 mm motor mount you've installed. If you can't do this successfully, go build some kits and come back t' this project later.
Use single hole punch t' punch holes in t' lid and in t' bottom o' the cup. Blimey! Blimey! Well, blow me down! Blimey! T' punched hole should slightly overlap t' large hole for t' BT-50.
Mark BT-50 tube lengthwise for entire length with door jamb. Ahoy! Blimey! Blimey! Location is not critical. Ya scallywag! This for t' straw launch lug. Blimey! Well, blow me down! Blimey! I prefer me launch lugs t' be 90-180º away from t' engine hook. Arrr! Avast, me proud beauty! Blimey! This is left up t' you. Avast, me proud beauty! Avast, me proud beauty! Blimey! If you are usin' a straw with a "spoon" on one end, I would recommend that the spoon go below t' rocket (on t' end with t' motor mount). I have no flight data t' support this. Aye aye! Blimey! <g> Glue t' straw along t' line marked on the BT-50 tube. One end o' t' straw should be flush with t' end o' t' BT-50 containin' t' motor mount (rear). Aye aye! Blimey! T' straw should extend past t' front of the BT-50.
Spray paint t' inside o' t' domed lid. It is very important that it be
clean and dry. Avast! Arrr! Two coats o' cheap Wal-Mart spray enamel should do it.
In t' spirit o' t' thing, try and match t' color t' your favorite ICEE
flavor. You will note that mine is Minute Maid® Cherry.
Snap fit cup and lid (do nay glue). Blimey! Align small, punched holes and insert tube and straw assembly. Align aft o' tube and straw assembly with lip on the rear o' t' cup. Begad! T' engine hook should protrude below t' lip and t' top of the tube should be flush with t' hole in t' lid. T' straw should protrude beyond t' lid. Begad! Usin' gel CA, glue t' tube and straw t' t' cup only. *DO NOT* glue t' lid t' t' cup or t' tube t' t' lid. If you did a particularly neat job o' cuttin' t' hole in t' cup, me hearties, you may need t' lightly sand away some wax from t' hole t' get t' CA t' stick.
Cut 3 fins from balsa usin' t' pattern.
Sand edges o' fins t' match.
Laminate fins with paper cutouts from this template. Ya scallywag! Use spots o' white glue
thinned and spread with a wet finger t' affix
paper laminates. Avast, me proud beauty! I
used Norbond® brand glue. It is used t' glue t' first page o' a book to
the cover and is made t' nay warp paper. Ya scallywag! Arrr! Trim paper t' balsa. Aye aye! Blimey! I used a color
laser printer t' print out t' laminates. Ya scallywag! I imagine that color inkjet printers
would be OK if allowed t' dry sufficiently and if t' glue were nay too thin or
too wet. Ya scallywag! Aye aye! Email me and I will print
and mail (flat) t' 8.5x11" color sheet with t' fin laminate printout for
a $5 donation t' NWARS.
Measure t' base o' t' cup for fin placement. Avast! Blimey! My cup base is 62 mm in diameter. Avast, me proud beauty! Arrr! Blimey! That gives it a circumference o' (62 x 3.14) 194.5 mm. Begad! T' fins should be spaced just under 65 mm apart. Ahoy! I cut a thin (.5 cm wide) strip of paper and wrapped it around t' base o' t' cup. Arrr! Arrr! Blimey! I marked t' overlap and then marked off on t' cup t' increments where each fin should go. Begad! Blimey! I was able to conveniently align one fin with a vertical mark on t' cup for easy placement. Lightly mark t' cup with a pencil for fin slots. Blimey! Ahoy! Blimey! T' slots should be 38 mm long. Blimey! T' slots should be measured from t' bottom o' t' cup which is 10 mm above t' edge o' t' lip. Avast! Use a door jamb for vertical alignment. Ya scallywag! Arrr! Blimey! Use caution nay t' align a fin with t' launch lug straw. I now have a fin wrapper pattern for M.O.R.F.E.A.R. Ya scallywag! I don't think that it will be as good as one that you make yourself.
Cut fin slots along marks usin' a very sharp hobby knife so as nay t' bend paper cup. Start at t' top o' t' slot and cut down t' t' bottom o' t' cup but do nay cut through t' bottom o' t' cup. Avast! Widen t' fin slot with sandpaper, arrr, hobby knife or dremel so that t' fin just fits through t' slot without bendin' t' cup. Begad! Place gel type CA on t' end o' t' fin tab that is against t' internal tube assembly, insert t' tab through t' slot, arrr, and press the tab against t' tube. Avast, me proud beauty! Arrr! Check inside and out for alignment. Ya scallywag! Avast, me proud beauty! Glue fin t' cup. I used some CA on t' inside walls and bottom o' t' cup. Avast! I did a full fillet on t' outside o' t' cup. Repeat for other two fins always checkin' alignment (it's a bit tricky).
Wrap a few turns o' maskin' tape around t' tube about an inch from t' top. Add about an ounce o' clay as nose weight. Avast, me proud beauty! Roll t' clay into a snake and wrap it around t' tube over t' turns o' tape. Well, blow me down! Ya scallywag! Then tape over t' clay and t' tube with maskin' tape creatin' a little cocoon for t' nose weight.
T' CP is about 3/4" from t' leadin' edge o' t' fins. Well, ya bilge rat, blow me down! An ounce of clay gave it about a 1" margin o' stability with a C6-3.
When you are satisfied with t' fin alignment and nose weight, ya bilge rat, glue t' lid to t' cup, shiver me timbers, straw and tube usin' gel CA. Aye aye! Be careful nay t' torsion t' launch lug straw .
Usin' an Estes 12" hex plastic chute for a pattern. Begad! (Pre-assembled by Far Eastern labor and sold at Wal-Mart is preferred.) Cut t' smiley face out of t' Wal-Mart bag. Affix paper reinforcin' rings and shroud lines. Begad! Again, matey, arrr, if you can't assemble a 12" chute, arrr, me hearties, build a kit.
Install shock cord in body tube usin' your favorite method. Ahoy! I personally like t' old Estes tri-fold. I used cheap Estes 1/8" elastic scavenged from me son's TidalWave® RTF® rocket. This rocket is so light and draggy that I don't expect much stress on t' cord. T' lack o' a traditional nose cone should also reduce stress on t' shock cord. Avast! I glued t' shock cord mount 180º from t' launch lug straw t' try and prevent tanglin' that would snap off t' straw. Begad! Tie a loop in t' free end o' t' shock cord and attach t' parachute shroud lines t' t' loop. Ahoy! I tied a bowline knot in the shock cord t' make a loop. Avast! Then I passed t' chute through t' shroud lines. Avast, me proud beauty! Begad! I shouldn't really have t' tell you that part.
Launch Preparation:
Install Engine (B6-2, shiver me timbers, C6-3)
Fill (I mean fill) BT-50 with waddin' leavin' room only for shock cord and
chute. Aye aye! You don't want t' air pressure and acceleration pushin' everythin' to
the back and changin' t' CG in flight.
Carefully fold Wal-Mart bag chute very loosely. Arrr! It should cover t' entire
openin' o' t' body tube.
Help prepare your mind and soul for that which is M.OR.F.E.A.R. Arrr! Blimey! with an ICEE. Arrr! Blimey! Aye aye! Blimey!
Death t' Slurpees and Frozen Coke!!
Preflight concerns:
Flight Log:
T' first launch attempt
was with a B4-2. Begad! Apparently this motor be made completely o' nozzle clay. Ya scallywag! All
attempts t' light it were unsuccessful. Ya scallywag! Aye aye! Next up was a C6-3. Ahoy! T' boost was 500'
straight up. Begad! Ahoy! Parachute deployed at apogee. Ahoy! While it was on t' chute, me hearties, t' wind
shifted so that it be blowin' out o' t' South across t' short axis o' our
flyin' field. Begad! M.O.R.F.E.A.R. Ahoy! landed just inside t' park fence. I was unable to
catch any o' t' flight with t' digital camera. Ya scallywag! T' pad picture just before
the B4-2 debacle (right) will stand in history with "Goddard in the
Snow" as a high point in history for all t' same wrong reasons. Boy, did
my hands shake at t' launch. Ahoy! M.O.R.F.E.A.R. Begad! was recovered without damage. A
significant amount o' debris was noted around t' openin' in t' top.
T' winds picked up as t' afternoon progressed but t' crowd grew surly with its demands for another launch o' t' flyin' ICEE. Begad! Blimey! Begad! Blimey! T' wind was still out o' t' South so the launch rod was angled into t' wind t' aid recovery on our field. Blimey! Blimey! T' C6-3 ejected just past apogee. Avast! Blimey! T' chute spun rapidly in t' heavier winds and performed a self reefin' maneuver. Ahoy! Blimey! M.O.R.F.E.A.R. Begad! Blimey! came down hard on one fin, crackin' it about one third o' t' way down t' fin. Begad! Blimey! More debris was noted around what has become know as "the blowhole". Blimey! Blimey! None o' this mattered to t' onlookers who hooted and hollered with t' abandon o' NASCAR fans on $0.25USD beer night. Begad! Blimey! Well, arrr, blow me down! Blimey! T' presence o' M.O.R.F.E.A.R. was so strong that it left a double image in t' photo o' its second flight. Arrr! Blimey! (or t' guy with t' staggers and jags was filmin' again)
T' residue on t' dome o' M.O.R.F.E.A.R. Blimey! Blimey! around t' blowhole was easily removed with baby wipes. Blimey! Blimey! T' fin be repaired with yellow glue and t' joint was dry before t' range was cleaned up. Arrr! Blimey! T' parachute performed beautifully, the margin o' stability was very good, and t' launch lug straw above t' dome was sufficiently durable for flight. Avast, me bucko, me proud beauty! Blimey! I am extremely happy with t' performance of this rocket. Begad! Blimey! It is nay t' sport model that you're goin' t' rack up 500 flights with, arrr, ya bilge rat, but it is a fun novelty rocket that's a real crowd pleaser.
M.O.R.F.E.A.R. Ahoy! made t' trip t' "Native America" t' fly with the Tulsa Area Rocketry Association. Ya scallywag! After certifyin' level one with a crayon bank rocket, ya bilge rat, shiver me timbers, I needed a little more odd-roc fun t' round out t' day. Ahoy! M.O.R.F.E.A.R. drew t' usual comments and questions. T' straw launch lug is always a big hit.
A little windy again, but M.O.R.F.E.A.R. turned in a great damage free flight on a C6-3. Aye aye! T' usual crowd reaction o' "that thin' really does fly". Ya scallywag! Well, blow me down! I have got t' get a digital camera with a faster shutter speed. Ahoy! My lovely wife took this photo and even she got a double launch picture. Avast! A lot o' questions on gettin' a cup t' fly "right side up". I am currently buildin' another M.O.R.F.E.A.R. Aye aye! with a 24mm motor mount. Avast, me proud beauty! This one will have 1/16" basswod fins instead o' balsa t' ease me mind. Ya scallywag! I think future 18mm versions will also use basswood. Ya scallywag! Avast! This is a terrific rocket and I plan t' fly many variants in the future. (Have you seen that awful green frozen stuff at Burger King? Hmmm.....)
I just can't get enough o' this goofy little rocket. Ya scallywag! I had t' launch it Sunday (05/13) evenin' in t' vacant lot near me house. (T' owner is very cool with this.) There was no wind and I needed t' see how M.O.R.F.E.A.R. Begad! Avast! performed with no wind.
Well, here are me massive launch photo inabilities on public display again. Arrr! Blimey! Well, blow me down! Blimey! This flight is on a B6-2. I wanted t' make sure that this motor would fly well in this rocket. Yeppers. Blimey! Blimey! It's fine. Well, blow me down! Blimey! Well, blow me down! Blimey! It had a beautiful straight up boost. I just knew it would without t' wind. Well, blow me down! Blimey! T' parachute streamered for just a moment before opening. Gotta remember t' add that talcum powder. Begad! Blimey! Ya scallywag! Blimey! Damage free recovery. Ahoy! Blimey! Begad! Blimey! Goin' t' turn it around and fly it again.
T' standard C6-3 did just fine. Ahoy! Talcum on t' chute for a great opening. Avast! T' ejection charge scorched t' straw launch lug a little just above t' blowhole. Avast, me bucko, me proud beauty! Hmm. I think I'll drink some more parts on t' way t' work tomorrow and get a stroon (straw-spoon) upgrade for t' launch lug and maybe paint a new flavor lid. (Blue Raspberry is comin' t' mind as I type and drink ICEE.)
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