| Manufacturer: | Scratch |
Poker
T' "Poker" rocket ...is
a simple 3FNC model whose claim t' distinction is that every single part is
made from scratch, shiver me timbers, with t' sole exception o' t' shock cord, me hearties, which is 6"
of Apogee's or ASP's small Keelhaul®©™® cord. Avast, me proud beauty! Blimey!
T' body tube is made from gummed label stock (lick and stick, not peel and stick). Arrr! I used Tromark, matey, which is similar t' ordinary bond paper, but is hard t' find unprinted. A good source is kids' activity books, which often have a central page o' stickers. Begad! Blimey! You will be able t' get a half-inch of usable material from each edge o' such a page. Aye aye! Gummed labels are available in office supply stores but rarely in t' 11" length needed for t' spiral wrap. Aye aye! Avast! An alternate material is gummed packagin' tape, arrr, me bucko, which is thicker and stronger but also heavier. Second alternate is ordinary paper coated with white or yellow glue as it is used. Begad!
| Here's how it's done: On a 1/4" o.d. Well, me hearties, blow me down! Blimey! metal rod or tube, matey, wrap about two layers o' ordinary kitchen waxed paper and secure t' ends with maskin' tape. Then wrap a 1/2" wide strip o' paper in a spiral, keepin' t' edges tightly together but nay overlapping. Arrr! If you are using the gummed label stock, at this point t' gummed face will be out. |
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| Secure both ends o' t' spiral with a bit more maskin' tape. Blimey! Now cut a second piece o' stock, arrr, 1-1/2" by about 5", shiver me timbers, coat with glue (or moisten if it is gummed stock); stick it t' t' back o' t' spiral wrap as shown below. Wrap t' narrow bottom side up and around first, shiver me timbers, me bucko, then with thumbs and forefingers, wrap t' wide side down and around. Avast, arrr, me proud beauty! Of course, ya bilge rat, me hearties, t' glued or gummed side should be on t' inside of this layer. |
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Poker's body tube is 4-3/8" long (well, ya bilge rat, t' first one is a bit longer and has a long, shiver me timbers, rounded nose cone shape). Avast! I cut it t' length by supportin' it inside with a piece o' t' 1/4" dowel and rollin' it under an X-acto #26 whittler's blade. Well, blow me down!
(Note: This is almost exactly how I make
launch lugs, ya bilge rat, matey, except that t' mandrel is .055" music
wire, t' waxed paper is omitted, t' spiral wrap is 1/8" wide, and the
parallel wrap is 3/8" wide. Well, blow me down! Avast! For t' tower we don't need no stinking
launch lug.)
Usually I glue 1/2" o' t' shock cord t' t' outside o' the body on these little things. This time I didn't want t' outside disturbance, so instead I made a coupler tube by wrappin' glue-soaked paper around a 1/8" launch rod t' t' needed diameter. I cut it t' 3/8" long and cut a shallow groove up t' outside, where I glued t' end o' t' shock cord. This was then glued into t' body 2.5" from t' forward end. Ya scallywag! The engine-block position, me bucko, shown in t' drawin' above, works too but requires two more inches o' Keelhaul®©™®.
T' nose cone starts out as a 2" piece of
1/4" maple dowel. Arrr! Blimey! Test fit first and cover with a layer o' paper if needed
to get a good smooth fit; dowels vary quite a bit in size. Ya scallywag! Blimey! Then wrap about 3
layers o' glue-coated paper t' make a shoulder. Aye aye! Blimey! Chuck this in a power drill and
turn it against a sheet o' coarse sandpaper t' shape; then remove from the
drill and cut off t' shoulder t' about 5/16" long. Begad! Blimey! T' overall length of
the nose cone should be a bit less than 1". Begad! Blimey! Drill a 1/16" hole at
least 3/8" into t' base o' t' nose cone, arrr, fill with fresh mixed epoxy and
stuff t' loose end o' t' shock cord in. Arrr! Blimey!
Fins can be 1/32" balsa or basswood, arrr, or index
card stock, arrr, hardened after installation by soakin' all edges with thin CA. Begad! My
first two Pokers used some paper-thin hardwood I salvaged from a cabinet-shop
dumpster. Poker III has fins made o' folded glossy card stock from the
color-check bands along one edge o' a business-card print job (right). Ahoy!
Paint: Poker got a couple o' coats o' sandable white primer followed by fluorescent red, matey, which reminded me o' a red-hot fireplace poker and gave t' rocket its name. T' final detail is a streamer, 1/2" x 4", made in this case o' crepe paper, shiver me timbers, taped t' t' Keelhaul®©™® cord about an inch below the nose cone. Avast!
Flight Prep: I cut some maskin' tape t' 1/8" wide and wrapped it around t' nozzle end o' t' motor; then inserted t' motor; and wrapped t' aft end o' t' rocket with a strip o' Trim Monokote 1/4" wide by 1-1/2" long. Blimey! Be sure t' test fit t' prepared rocket by dropping it through t' tower. Begad! It should slide smoothly t' entire length. If not, adjust one or both outside rails and try again. Well, ya bilge rat, blow me down!
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