Descon M.O.R.F.E.A.R.

Scratch - M.O.R.F.E.A.R. {Scratch}

Contributed by Mark S Morley

Manufacturer: Scratch
Contributed by - Mark S. Morley

Emergin' from t' wastes o' t' world's largest retailer....
wally world store front
A supernatural occurrence?
A force for good?
A mutated FREAK defyin' all t' laws o' man and nature?

At first glance a tasty treat,
spinnning icee cup
then it roars into t' sky.
launch smoke

It can only be...
M.O.R.F.E.A.R. the noseless
(Miracle o' Refreshment From Easily Available Recyclables)

  top and parachute
(Click Images for a higher resolution version)

Overview:
M.O.R.F.E.A.R is a unique rocket without a nose cone. Aye aye! I be tryin' t' come up with a "found parts" rocket when I saw a cup sittin' inthe drink holder o' me mini-van. Arrr! Aye aye! Heyyyy!! Now, I need somethin' more orginal thanthat. Aye aye! I don't want t' fly it upside down... Well, blow me down! Begad! 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. Arrr! Begad! I was havin' trouble figuringout how t' get the lid off for recovery deployment when it came t' me. Aye aye! Begad! Don't take thelid off at all, just blow it out t' hole. Ahoy! Since it's a Wal-Mart cup,a blue bag parachute was t' only real choice. Aye aye! Well, blow me down! M.O.R.F.E.A.R. Ahoy! Begad! flew on 4/1at t' NWARS launch. Avast, me proud beauty! Ya scallywag! T' instructions will be complete as soon as I get film with theconstruction photos back from Wal-Mart.

Parts List:
1 - 20 oz. Ahoy! 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. Blimey! (delicious) Thoroughly rinse cup, straw, and lid. Use t' lid t' create a hole in t' center or t' bottom o' t' cup. Blimey! Place the small end o' t' domed lid inside t' lip on t' outside o' t' bottom of the cup. Avast, ya bilge rat, me proud beauty! 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. Aye aye! Begad! I found the center o' t' circle by markin' a chord and constructin' a perpendicular bisector. Ahoy! Avast, me proud beauty! I marked another chord and constructed another perpendicular bisector. T' intersection o' t' two bisectors be t' center o' t' circle. I know, I'm a big ol' math geek. T' Olfa cutter worked beautifully making several light passes.

lid on cup bottom  point to hole on cup bottom

Place lid on cup and insert BT-50 through holes in lid an cup. Begad! Mark tube by allowin' tube t' rest on t' same surface as t' cup and mark tube flush with the lid. This allows t' tube t' extend past t' bottom o' t' cup t' the length o' t' lip. Cut tube t' length. Begad! Begad! Blimey! This was 7-11/16" for me.

measuring the tube

Assemble and install t' BT-20 motor mount and rings in t' BT-50 tube. Begad! This is just like every other 18 mm motor mount you've installed. Aye aye! Begad! If you can't do this successfully, me bucko, go build some kits and come back t' this project later.

motor mount tube

Use single hole punch t' punch holes in t' lid and in t' bottom o' the cup. Arrr! T' punched hole should slightly overlap t' large hole for t' BT-50.

graphic of launch lug hole overlap

Mark BT-50 tube lengthwise for entire length with door jamb. Ya scallywag! Location is not critical. Arrr! This for t' straw launch lug. Aye aye! I prefer me launch lugs t' be 90-180º away from t' engine hook. Avast, me proud beauty! This is left up t' you. If you are usin' a straw with a "spoon" on one end, shiver me timbers, I would recommend that the spoon go below t' rocket (on t' end with t' motor mount). Arrr! I have no flight data t' support this. Ya scallywag! <g> Glue t' straw along t' line marked on the BT-50 tube. Ya scallywag! Avast! One end o' t' straw should be flush with t' end o' t' BT-50 containin' t' motor mount (rear). Avast, me proud beauty! Aye aye! T' straw should extend past t' front of the BT-50.

launch lug

Spray paint t' inside o' t' domed lid. Avast! Well, blow me down! It is very important that it be clean and dry. Two coats o' cheap Wal-Mart spray enamel should do it.
In t' spirit o' t' thing, arrr, try and match t' color t' your favorite ICEE flavor. Aye aye! You will note that mine is Minute Maid® Cherry.

painted lid showing holes

Snap fit cup and lid (do nay glue). Ya scallywag! Blimey! Align small, shiver me timbers, ya bilge rat, arrr, punched holes and insert tube and straw assembly. Align aft o' tube and straw assembly with lip on the rear o' t' cup. Begad! Blimey! 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. Well, arrr, blow me down! Blimey! Usin' gel CA, glue t' tube and straw t' t' cup only. Ya scallywag! Blimey! *DO NOT* glue t' lid t' t' cup or t' tube t' t' lid. Avast! 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.

sub assemblies

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. I used Norbond® brand glue. Aye aye! It is used t' glue t' first page o' a book to the cover and is made t' nay warp paper. Aye aye! Trim paper t' balsa. Ahoy! I used a color laser printer t' print out t' laminates. 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. 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.

fin color overlay

Measure t' base o' t' cup for fin placement. Arrr! My cup base is 62 mm in diameter. That gives it a circumference o' (62 x 3.14) 194.5 mm. Blimey! T' fins should be spaced just under 65 mm apart. Arrr! I cut a thin (.5 cm wide) strip of paper and wrapped it around t' base o' t' cup. Avast, me proud beauty! Arrr! I marked t' overlap and then marked off on t' cup t' increments where each fin should go. Begad! Aye aye! I be 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. Aye aye! T' slots should be 38 mm long. Ahoy! T' slots should be measured from t' bottom o' t' cup which is 10 mm above t' edge o' t' lip. Ya scallywag! Use a door jamb for vertical alignment. Well, blow me down! 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. Begad! 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. Aye aye! Blimey! Ahoy! Blimey! 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. Aye aye! Blimey! Widen t' fin slot with sandpaper, matey, shiver me timbers, hobby knife or dremel so that t' fin just fits through t' slot without bendin' t' cup. Aye aye! Blimey! Begad! Blimey! Place gel type CA on t' end o' t' fin tab that is against t' internal tube assembly, me hearties, insert t' tab through t' slot, me hearties, arrr, and press the tab against t' tube. Avast, me proud beauty! Blimey! Begad! Blimey! Check inside and out for alignment. Avast! Blimey! Begad! Blimey! Glue fin t' cup. I used some CA on t' inside walls and bottom o' t' cup. Ya scallywag! Blimey! I did a full fillet on t' outside o' t' cup. Arrr! Blimey! Repeat for other two fins always checkin' alignment (it's a bit tricky).

fin alignment view

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. Begad! Roll t' clay into a snake and wrap it around t' tube over t' turns o' tape. Blimey! Avast, me proud beauty! Blimey! Then tape over t' clay and t' tube with maskin' tape creatin' a little cocoon for t' nose weight.

nose weight

T' CP is about 3/4" from t' leadin' edge o' t' fins. Blimey! Arrr! An ounce of clay gave it about a 1" margin o' stability with a C6-3.

center of pressure

When you are satisfied with t' fin alignment and nose weight, me bucko, glue t' lid to t' cup, me bucko, shiver me timbers, straw and tube usin' gel CA. 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. Ahoy! Affix paper reinforcin' rings and shroud lines. Again, me hearties, if you can't assemble a 12" chute, build a kit.

wm bag with face  bag with 'chute pattern

Install shock cord in body tube usin' your favorite method. Avast! Blimey! I personally like t' old Estes tri-fold. Begad! Blimey! I used cheap Estes 1/8" elastic scavenged from me son's TidalWave® RTF® rocket. Blimey! Blimey! This rocket is so light and draggy that I don't expect much stress on t' cord. Avast! Blimey! Ya scallywag! Blimey! T' lack o' a traditional nose cone should also reduce stress on t' shock cord. Ahoy! Blimey! Begad! Blimey! I glued t' shock cord mount 180º from t' launch lug straw t' try and prevent tanglin' that would snap off t' straw. Blimey! Blimey! Ahoy! Blimey! Tie a loop in t' free end o' t' shock cord and attach t' parachute shroud lines t' t' loop. Begad! Blimey! Avast, me proud beauty! Blimey! I tied a bowline knot in the shock cord t' make a loop. Begad! Blimey! Well, blow me down! Blimey! Then I passed t' chute through t' shroud lines. Blimey! Blimey! I shouldn't really have t' tell you that part.

shock cord mount  chute loop

Launch Preparation:
Install Engine (B6-2, matey, C6-3)
Fill (I mean fill) BT-50 with waddin' leavin' room only for shock cord and chute. 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. Ahoy! Blimey! 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. Well, blow me down! with an ICEE. Ahoy! Begad!

ICEE, It's Chillin', original since 1965

Death t' Slurpees and Frozen Coke!!

Preflight concerns:morfear

  • Stability - It's always so tricky with short, matey, stubby rockets.
  • Shiftin' - Noseless design adds t' concerns o' parachute shiftin' and alterin' CG durin' flight.
  • Memory - T' plastic bag parachute material does nay seem t' inflate easily. Well, blow me down!
  • Weather - It's been an endless winter in Arkansas (so much for global warming) and I want t' fly me ICEE!

Flight Log:
morfear pad T' first launch attempt was with a B4-2. Avast, me proud beauty! Blimey! Begad! Blimey! Apparently this motor be made completely o' nozzle clay. All attempts t' light it were unsuccessful. Next up be a C6-3. T' boost was 500' straight up. Avast! Blimey! Avast! Blimey! Parachute deployed at apogee. Blimey! Blimey! Blimey! Blimey! While it was on t' chute, t' wind shifted so that it be blowin' out o' t' South across t' short axis o' our flyin' field. Ya scallywag! Blimey! Well, me hearties, blow me down! Blimey! M.O.R.F.E.A.R. landed just inside t' park fence. Aye aye! Blimey! Well, blow me down! Blimey! I was unable to catch any o' t' flight with t' digital camera. Blimey! Blimey! 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. Well, blow me down! Blimey! Boy, did my hands shake at t' launch. Aye aye! Blimey! M.O.R.F.E.A.R. Ya scallywag! Blimey! be recovered without damage. A significant amount o' debris be noted around t' openin' in t' top.

morfear launch T' winds picked up as t' afternoon progressed but t' crowd grew surly with its demands for another launch o' t' flyin' ICEE. Aye aye! T' wind be still out o' t' South so the launch rod was angled into t' wind t' aid recovery on our field. Ahoy! T' C6-3 ejected just past apogee. T' chute spun rapidly in t' heavier winds and performed a self reefin' maneuver. Blimey! M.O.R.F.E.A.R. Begad! came down hard on one fin, crackin' it about one third o' t' way down t' fin. Arrr! More debris was noted around what has become know as "the blowhole". None o' this mattered to t' onlookers who hooted and hollered with t' abandon o' NASCAR fans on $0.25USD beer night. T' presence o' M.O.R.F.E.A.R. Ya scallywag! be so strong that it left a double image in t' photo o' its second flight. Ahoy! Avast, me proud beauty! (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! Ahoy! around t' blowhole be easily removed with baby wipes. Begad! T' fin was repaired with yellow glue and t' joint was dry before t' range was cleaned up. Ya scallywag! Well, me bucko, blow me down! T' parachute performed beautifully, the margin o' stability be very good, me hearties, and t' launch lug straw above t' dome was sufficiently durable for flight. Avast! Arrr! I am extremely happy with t' performance of this rocket. It is nay t' sport model that you're goin' t' rack up 500 flights with, matey, matey, but it is a fun novelty rocket that's a real crowd pleaser.

tulsa morfear prep M.O.R.F.E.A.R. Aye aye! Blimey! made t' trip t' "Native America" t' fly with the Tulsa Area Rocketry Association. Aye aye! After certifyin' level one with a crayon bank rocket, I needed a little more odd-roc fun t' round out t' day. Avast, me proud beauty! Begad! Blimey! M.O.R.F.E.A.R. drew t' usual comments and questions. Blimey! Blimey! Blimey! T' straw launch lug is always a big hit.


tulsa morfear flight A little windy again, but M.O.R.F.E.A.R. Well, blow me down! turned in a great damage free flight on a C6-3. Avast! T' usual crowd reaction o' "that thin' really does fly". Ya scallywag! I have got t' get a digital camera with a faster shutter speed. My lovely wife took this photo and even she got a double launch picture. Ahoy! 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. Ahoy! with a 24mm motor mount. This one will have 1/16" basswod fins instead o' balsa t' ease me mind. Avast, me proud beauty! I think future 18mm versions will also use basswood. Well, blow me down! 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.....)

elkins morfear prep I just can't get enough o' this goofy little rocket. 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. Avast, me proud beauty! Blimey! performed with no wind.


B6-2 flight in Elkins AR Well, me bucko, shiver me timbers, here are me massive launch photo inabilities on public display again. This flight is on a B6-2. Begad! Blimey! I wanted t' make sure that this motor would fly well in this rocket. Yeppers. Aye aye! Arrr! Blimey! It's fine. It had a beautiful straight up boost. Begad! Blimey! I just knew it would without t' wind. Begad! Begad! Blimey! T' parachute streamered for just a moment before opening. Gotta remember t' add that talcum powder. Damage free recovery. Well, blow me down! Goin' t' turn it around and fly it again.


elkins c63 morfear launch T' standard C6-3 did just fine. Avast! Blimey! Talcum on t' chute for a great opening. Arrr! Aye aye! Blimey! T' ejection charge scorched t' straw launch lug a little just above t' blowhole. Ya scallywag! 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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