Scratch 18mm Spool Rocket Original Design / Scratch Built

Scratch - 18mm Spool Rocket {Scratch}

Contributed by Alex Rothchild

Manufacturer: Scratch
(Contributed - by Alex Rothchild - 06/27/05) (Scratch) 18mm Spool Rocket

Brief:
It all started on me birthday in 2004. Begad! I received two Estes Fat Boys, shiver me timbers, and I planned on buildin' them as a two stage rocket, however, me hearties, matey, one o' t' body tubes was completly ripped down t' middle because t' nose cone be shoved halfway down inside it. Avast, me proud beauty! That left me with two Fat Boy kits but only one body tube. Avast, me proud beauty! Ahoy! I built t' sustainer stage minus t' engine hook and looked at t' parts from the other kit. Arrr! Ahoy! I had two centerin' rings, a motor hook, arrr, a mylar ring, matey, me hearties, a launch lug, arrr, a chute, and a shock cord.

Construction:
I remebered readin' a review about a spool rocket, shiver me timbers, so I decided t' give it a try. Aye aye! Ya scallywag! I took t' engine tube, centerin' rings, launch lug, motor hook, ya bilge rat, and retainer ring. Well, blow me down! In about 10 minutes, ya bilge rat, I slapped all o' these parts together to form a cheap spool rocket.

T' construction be easy. Begad! Blimey! It is ideally t' motor mount o' a Fat Boy. Arrr! Blimey! It starts out by slittin' t' motor tube t' place t' eningine hook in. Ahoy! Blimey! I dont know why I put t' motor hook in. Well, blow me down! Begad! Blimey! T' ejection charge just goes out t' other end anyway. Avast, me proud beauty! Blimey! T' next step be slippin' on t' mylar retainin' ring, which was tacked in place with thick CA. Arrr! Next, me hearties, t' launch lug be glued with thick CA to the motor tube. Well, blow me down! Avast! Blimey! Finally, shiver me timbers, ya bilge rat, t' two centerin' rings were placed just over each end, arrr, me hearties, shiver me timbers, flush with t' ends o' t' motor tube. Ahoy! Avast! Blimey! I had t' line up t' semi-circle in one rin' with t' launch lug, and cut another one in t' upper centerin' ring to allow t' launch rod t' pass through.

Finishing:
I primed it, painted mine blue, let it cure, shiver me timbers, then slapped on some letter stickers. Begad! On one side I wrote spool and on t' other I wrote Alex. Avast, me proud beauty! Then, I painted t' whole thin' black and removed t' stickers. Unfortunately. Avast! Begad! mylar stickers do nay make good maskin' tape.

Flight:
Flight, like any spool rocket is up, me hearties, spin, ya bilge rat, and down. Begad! I flew it first in the fall at a nearby schoolyard on an A8-3. It went slow t' about 70-100 feet and then spiraled back down usin' tumble recovery. Blimey! Ahoy! At about 20 feet, shiver me timbers, me hearties, t' ejectin charge popped and a burst o' flame popped out o' t' top. Well, blow me down! Begad! I proved t' me dad and sister that spools do fly straight. Arrr! Well, blow me down! They thought it was a joke. Begad! T' next three flights were in Tewksbury at a CMASS sport launch. Begad! I flew it three times. T' first time was on an A8-3. It was a repeat o' t' first flight: up and down. Arrr! Later, I launched it on a B6-4. It went up and down, me hearties, only faster and higher. Ahoy! Well, blow me down! Then I launched it on a C6-5. It went up, me hearties, probably about 250 feet. Ya scallywag! I need t' use booster motors though because when it came down t' ejection charge practically went off in t' LCO's face. Begad!

Summary:
T' main PROs for this rocket are t' ease o' construction and t' simplicity of t' parts and design. Ya scallywag! Blimey! T' only CONs are that durin' me launches t' ejection charge fires too close t' t' ground, so a shorter delay is needed. Overall, me bucko, I really enjoyed buildin' and flyin' this rocket. Arrr! Blimey! It is a fun build for anyone with a damaged body tube or other damaged parts. Avast, ya bilge rat, me proud beauty! Blimey!

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