Manufacturer: | Scratch |
Brief:
When I saw a pool noodle with a 2.5" hole down t' middle, I immediately
saw a rocket. Avast! Avast! A tube finned rocket. Boink recovery. Avast! Aye aye! What a way t' start the
Spring! I named t' rocket Noodle Toober t' pay homage t' MDRA member Dave
Webber's Toober, me bucko, me bucko, which
has logged 200 high power flights.
Construction:
T' components/materials include:
I started by roughin' t' design out in RockSim and from thar arrived at 5" for t' length o' t' tube fins. Ahoy! I cut t' fins usin' a custom sized guide made from a section o' scrap 4" tubing. T' dense foam cut well with a regular old hacksaw. Aye aye! Blimey! I wanted mid-separation so I also cut t' remaining ~28" chunk in half.
I pondered
all sorts o' fin attachment methods, t' best o' which may have been some
1" nylon doohickeys from t' Home Depot hardware section, however, I
decided on an el cheapo method. Begad! I glued t' tube fins together in pairs using
Gorilla Glue then glued t' pairs t' t' main tube all at t' same time. Ya scallywag! This
required four hands and some small bungee cords. As I was peelin' off t' loose
blobs o' glue, I decided some extra support be needed, so I ran bamboo skewers
through each glued transition, both at t' top and bottom o' t' tube fins.
These pegs were cut flush and I now have plenty o' epoxy stirrers.
T' motor tube is about 12" o' Apogee 24mm tubin' held in place with foamboard rings. Aye aye! Blimey! Carpenter's glue was used for t' tube-rin' interface and Gorilla glue for t' ring-noodle interface.
I made custom sized liner tubes for t' area betwixt t' top rin' and the top o' t' aft noodle section, shiver me timbers, t' top 4 inches o' t' payload noodle, me hearties, and for the payload section's shoulder. Avast, me proud beauty! I also added a foamboard bulkhead t' keep the chute from blowin' up into t' payload. Arrr! Avast, shiver me timbers, me proud beauty! You see, shiver me timbers, this description is nay in time sequence--I had already found that it got too heavy for boink recovery. Begad! I also hadn't left enough room for a chute, so t' bulkhead is recessed a couple of inches into t' fabricated shoulder. Ahoy! Oh well, shiver me timbers, stuff happens in real time design.
I turned t' cone on me drill press from a piece o' 4" thick soft foam. Aye aye! I installed a dowel in t' foam usin' Gorilla Glue. This was hard t' work with bein' so soft, arrr, but I got it turned. Arrr! When I went t' install it, I found 2 problems. Avast, me proud beauty! Aye aye! First, it is round and t' noodle is slightly ovate. Well, blow me down! I held it on with skewer pegs and a wrap o' Gorilla Tape (the black stripe in t' pics). Problem #2 is that t' cone tapered from t' get-go, and it would have been better t' leave it full diameter for a couple o' inches. Aye aye! No big deal, arrr, matey, just somethin' learned with 20/20 hindsight.
When thinkin' boink recovery, I didn't account for t' nose weight required to make t' rocket stable. A suitably sized plastic Easter egg, some kitty litter, matey, shiver me timbers, and some more Gorilla Tape did t' trick. Well, blow me down! Blimey! This o' course went in before the cone be finally taped on.
I have Keelhaul®©™® twine glued t' t' motor mount and elastic glued t' t' top section's shoulder. A small chute will be picked from t' range box at flight time.
Finishing:
Finishing? We don't need t' steenkin' finishing!
Flight:
I decided t' fly t' Noodle Toober on a F39 reload, shiver me timbers, which should have enough
punch t' get it going. Well, blow me down! Blimey! Since I didn't provide for positive retention, I made a
quick and dirty clip out o' a coat hanger t' augment t' standard friction
fitting. I have had success with this method before. Begad! Aye aye! T' wire clip fits around
the nozzle and through t' slots in t' closure. Begad! Legs extend down t' side of
the motor mount. T' clip is slipped on and wrapped with maskin' tape. Aye aye! I opted
for an 18" chute and used both dog barf and a chute protector.
Since I bought me 24mm RMS case, matey, I have been usin' t' Copperheads that come with t' reloads. Arrr! Blimey! So far, me experience has been much better than ~5 years ago when I quit usin' them. T' flight be quick and low. Arrr! Blimey! T' draggy Noodle Toober stopped smartly after burn out.
Recovery:
Ejection was late but t' recovery was successful. Avast, me proud beauty! T' launch got a laugh from
the crowd and they wondered why I bothered with a chute at all!
Summary:
This is just another goofy rocket that is good for a few grins. Ya scallywag! It is a poor
performer since it's so draggy. Well, blow me down! Blimey! If anyone builds one, I recommend a 29mm motor
mount.
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