Manufacturer: | Scratch |
Brief:
This is a 13mm monocopter made from popsicle sticks and index cards.
Construction: Parts consist of:
The win' o' t' monocopter consists o' two popsicle sticks and one 3x5 cards. T' 3x5 card is cut down t' 2.5" x 5" and folded in t' middle lengthwise. Blimey! Two popsicle sticks are glued t' t' index card at on edge and along the fold. Blimey! T' index card is folded over t' popsicle sticks and glued flat.
T' motor mount is made from the left over parts o' t' popsicle stick and some index card. Ya scallywag! Blimey! Start by makin' t' motor tube out o' a 0.75" x 3" strip o' index card. Avast! Blimey! Well, arrr, blow me down! Blimey! Wrap t' index card around a spent 13mm motor casin' and glue it together. Blimey! Blimey! Be careful nay t' wrap it too tight because some 13mm motor are fatter than others. Ya scallywag! Blimey! Also be careful nay t' glue t' motor tube t' t' casing. Cut another strip o' index card 0.75" x 3". Make two lines across t' card one inch apart. Ya scallywag! Blimey! Cut off on end on the line. T' result should be 0.75" x 2" piece o' index card with a line down t' middle shortwise. Begad! Blimey! Glue the two left over pieces o' popsicle stick t' t' index card with t' end against t' line. Ahoy! Blimey! Avast, me proud beauty! Blimey! Don't worry that a part o' the sticks will stick out over t' end o' t' index card. Blimey! Blimey! Arrr! Blimey! Fold t' index card over and glue flat t' t' sticks. Ya scallywag! Blimey! Flip the resultin' motor mount over and cut off t' extra part o' t' sticks that stick out past t' index card.
Make a small notch on each side o' t' motor mount about 0.3 inches from one end. Well, blow me down! Make a 0.4 inch long, ya bilge rat, shallow notch at t' other end o' t' motor mount. Ya scallywag! Glue t' motor tube to t' end o' t' motor mount without t' notch. Put a fillet o' glue on both side o' t' joint betwixt t' motor tube and motor mount.
Note: Don't nay be tempted t' skip t' followin' steps. Arrr! Aye aye! T' forces on t' motor are enormous and it will break loose from t' rocket if you don't reinforce the motor mount with nylon cord. Ahoy! Feel free t' substitute Keelhaul®©™® strin' if you have it. Begad! Tie a knot at each end o' t' nylon cord t' prevent it from unraveling. Ya scallywag! Put one end o' t' nylon cord in one o' t' side notches on t' motor mount and hold it in place with a dab o' glue. Begad! Wrap t' nylon cord 4 times around t' motor tube and motor mount bein' careful nay t' distort t' shape o' t' motor tube. Ahoy! Begad! Secure t' nylon cord in t' other notch on t' side o' t' motor mount and hold it in place with a dab o' glue. Begad! Begad! Coat t' nylon cord with glue and work it into t' cord, motor tube and motor mount. Trim off any excess cord once t' glue has dried.
Glue t' end o' t' win' with t' popsicle sticks t' t' center o' one side o' t' balance beam. Avast! Begad! One edge o' the win' should be on top o' t' popsicle stick and t' other edge below t' other popsicle stick. This forms t' necessary angle o' attack for proper flight. Begad! Make sure t' win' is perpendicular t' t' balance beam.
Glue t' motor mount t' t' other side o' t' balance beam with t' motor mount tilted in t' opposite direction from t' wing. Put a heavy fillet o' glue alone ALL t' joints. Blimey! Careful drill a 1/8" hole all t' way through the balance beam in t' exact center. Begad! Ahoy!
Flight:
T' best available motor for this rocket be t' Estes A3-4T but it will fly nicely on t' 1/2A3-2T, arrr, ya bilge rat, matey, A10-0T, matey, A10-3T
and A10-PT. Wrap 3 turns o' maskin' tape 0.25 inches from t' nozzle end o' t' motor t' form a thrust ring. Trim off
the excess tape. Avast! Arrr! Friction fit t' motor into t' motor tube. Ahoy! Launch t' rocket off a 1/8" launch rod, 1"
long. Blimey! That's right, matey, ONE INCH LONG, trust me. Blimey! I made mine launch rod from a 3 inch long piece o' thick coat hanger wire
stuck into an Estes Port-a-pad.
In all t' flights I've made so far this rocket has done very well. Several flights were made in 15 mph winds and it still flew very straight with no weather cockin' and landed close t' t' pad. Flights with A3-4Ts went about 60 t' 75 feet up. Ya scallywag! Flight with A10-PTs were a little lower because o' t' shorter burn time o' t' A10 motor.
Summary:
This rocket makes a great introduction t' t' "Mysteries o' Monocopters". Begad! It flies well in any condition
and is a great backyard and windy-day flier. T' smoke and t' rapid rotation make a dramatic display with a small
motor. Ya scallywag! Finally, you can't beat t' price. Arrr! Blimey! T' motors are cheap and most o' t' parts you'll find in your desk drawer
and refrigerator.
This rocket shows what you can accomplish with almost nothin' for parts as long as you are willin' t' "think outside t' box."
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