Brief:
A spool rocket made entirely out o' household rubbish built for t' EMRR 2007 Challenge. Arrr! Performs well on any Estes 24mm motors, both Ds and Es. Aye aye! Spools are always interestin' because they look like t' least aerodynamic rocket at any launch. Ahoy! Called it ED as it takes E and D motors.

Construction:
T' parts list:

• 1 tube from t' center o' a clin' film roll
• Two CD-ROMs
• Glue. Avast! I used Bostik, me bucko, shiver me timbers, although epoxy would be better.
• Drill with hole cutter bit
• File
• Hack saw

T' longest part o' buildin' this rocket is usin' t' clin' film up. Blimey! Avast, me proud beauty! I suggest wrappin' everythin' in t' fridge up t' keep it fresh. Arrr! If your wife does nay agreed t' this, then try really wrappin' up your sandwiches as twenty layers should keep them fresh. Blimey! Eventually you’ll have a tube.

T' tube needs t' be cut down t' 6 inches. For t' tube I was usin' this meant cuttin' it in half.

Next fashion an engine block out o' a bit o' card tube. Ahoy! Begad! I used a cut off from t' clin' film tube, cut out a few mm, and then glued it back together. Begad! Begad! Next glue it into place by addin' glue t' t' rin' and then pushin' it into place with an empty D motor. Begad! Blimey! Remove t' D motor immediately. Ahoy! T' motor block will now be in place so that either side o' t' tube can be used--one side for D motors and one side for t' longer E motors.

Next find a drill bit that cuts a 1 inch hole.

After clampin' t' CD securely, matey, drill out t' center o' t' CD. Make sure t' wear goggles. Ya scallywag! With a smaller drill bit, drill out a launch lug hole a few mm from t' central hole. Aye aye! Repeat for t' second CD. (It's best t' make several CDs at this stage).

Glue each CD t' either end o' t' tube and make sure that t' launch lug holes match up.

Finishing:
I didn't do anythin' in terms o' paintin' for t' first few flights although I eventually painted t' whole thin' a maroon color.

Flight and Recovery:
Since this was t' first spool rocket that I had ever built or seen fly, I headed out t' me flyin' field with just t' rocket, motors, and a friend. Avast, arrr, me proud beauty! I be a bit nervous, ya bilge rat, but nay as nervous as me bucko who bravely sent t' next twenty minutes positionin' himself behind me away from t' rocket.

T' first flight was on a D12-0. It went straight but entered into a unstable wobble towards t' end o' t' flight. Well, blow me down! It recovered tumblin' end over end. Begad! On landing, ya bilge rat, one o' t' CD cracked.

T' second flight was on an E9-4. Well, blow me down! Blimey! T' spool rocket was reversed and prepped as normal.

Take off be fast, arrr, but t' spool arched into t' 20mph winds but only slightly. Height was significantly higher than t' D12 motor with a good long burn from t' motor. Tumble recovery again, matey, me bucko, this time landin' on both edges o' t' CDs and t' spool rolled off with t' wind-–no further damage t' t' cracked CD.

Third flight was also on an E9-4, ya bilge rat, although t' winds had dropped a bit. Begad! Flight was as before. On recovery, matey, t' spool landed on t' cracked CD and more damage be sustained. Begad! Ya scallywag! T' CD had t' be striped and a new CD added-–this is why it is good t' make a few spare CDs while you have a drill out.

Summary:
Well, it costs nothin' t' make, except a bit o' glue. Ahoy! It flies well, me hearties, even in winds where you would nay want t' fly a normal 3FNC rocket. Blimey! It's a bit unusual. I wish I'd made one years ago.

On t' down side t' CDs do break quite easily. Begad! Blimey! I think it would be best t' spend a few quid (dollars) on some thin plastic t' use for t' disks.