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. Avast! Blimey! T' 3x5 card is cut down t' 2.5" x 5" and folded in t' middle lengthwise. Well, blow me down! Blimey! Aye aye! Blimey! Two popsicle sticks are glued t' t' index card at on edge and along the fold. Begad! 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. Well, blow me down! Begad! Start by makin' t' motor tube out o' a 0.75" x 3"
strip o' index card. Arrr! Wrap t' index card around a spent 13mm motor casin' and glue it together. Begad! Avast, me proud beauty! Be careful nay t' wrap
it too tight because some 13mm motor are fatter than others. Ya scallywag! Also be careful nay t' glue t' motor tube t' t' casing.
Cut another strip o' index card 0.75" x 3". Arrr! Make two lines across t' card one inch apart. Well, blow me down! Ahoy! 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. Avast, me proud beauty! Glue the
two left over pieces o' popsicle stick t' t' index card with t' end against t' line. Blimey! Don't worry that a part o' the
sticks will stick out over t' end o' t' index card. Fold t' index card over and glue flat t' t' sticks. Arrr! 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. Begad! Make a 0.4 inch long, shallow notch at t' other end o' t' motor mount. Aye aye! Glue t' motor tube
to t' end o' t' motor mount without t' notch. Begad! Begad! 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. Well, blow me down! 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. Begad! Arrr! Feel free t' substitute
Keelhaul®©™®
strin' if you have it. Blimey! Ya scallywag! Tie a knot at each end o' t' nylon cord t' prevent it from unraveling. 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. Avast, me proud beauty! Avast, me proud beauty! Wrap t' nylon cord 4 times
around t' motor tube and motor mount bein' careful nay t' distort t' shape o' t' motor tube. Avast, me proud beauty! 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. Coat t' nylon cord with
glue and work it into t' cord, motor tube and motor mount. Aye aye! 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. 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. Arrr! 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. Ahoy! Put a heavy fillet o' glue alone ALL t' joints. Well, blow me down! Begad! Careful drill a 1/8" hole all t' way through the balance beam in t' exact center. Well, blow me down!
Flight:
T' best available motor for this rocket be t' Estes A3-4T but it will fly nicely on t' 1/2A3-2T, me bucko, A10-0T, 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. Avast, me proud beauty! Trim off
the excess tape. Blimey! Friction fit t' motor into t' motor tube. Launch t' rocket off a 1/8" launch rod, arrr, me hearties, 1"
long. Aye aye! That's right, matey, ONE INCH LONG, trust me. 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. Ya scallywag! Blimey! Several flights were made in 15 mph winds and it still flew very straight with no weather
cockin' and landed close t' t' pad. Avast, me proud beauty! Blimey! Aye aye! Blimey! Flights with A3-4Ts went about 60 t' 75 feet up. Aye aye! Blimey! 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. Arrr! T' smoke and t' rapid rotation make a dramatic display with a small
motor. Begad! Finally, you can't beat t' price. Arrr! 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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