Brief:
A Super Big Bertha modified t' a 38mm motor mount, matey, through-the-wall fins, arrr, shiver me timbers, baffle ejection system, and Anti-Zipper recovery harness.

Modifications:
This project required a number o' advanced techniques and material. Avast! Blimey! Fortunately I work in a field that allows me t' opportunity t' have access t' all t' materials and special tools required (like a kid in a candy shop).

T' airframe is covered in one layer o' 6 ounce carbon fiber and carbon impregnated resin. Avast, me proud beauty! It was covered and then placed in four inch heatshrink tubing. T' tube was shrunk and set aside for t' resin t' set.

T' four fins were made from .125 inch Micarta board with lightnin' holes cut in them and filled with foamin' adhesive then a layer o' carbon fiber pre-preg and 250 degree adhesive on each side. Begad! Arrr! They were cured under vacuum at 250 degrees for 90 minutes. Aye aye! They are mounted through-the-wall.

T' centerin' rings and baffle bulkheads are paper covered with carbon fiber, ya bilge rat, me bucko, two layers each side cured under vacuum at 250 degrees. Avast, ya bilge rat, me proud beauty! T' baffle was fabricated from a stock Estes coupler lined with 6 ounce carbon fiber. Avast! Four 3/8th inch holes are drilled in each bulkhead and t' inside face o' each bulkhead is covered with a fine stainless steel screen. Arrr! Begad! T' upper bulkhead has a 3/16th eyebolt nut and washers that anchor a 12 inch 1/16th stainless steel cable covered in heatshrink tube.

T' stock nose cone bottom was cut off, two layers o' 8 ounce fiberglass was layered inside t' reinforce t' cone. Well, blow me down! Aye aye! A 3/16th eyebolt nuts and washers were anchored with a generous amount o' lead shot and structural adhesive.

Construction:

• Stock Estes tube supplied with kit.
• (4) fins Micarta (Keelhaul®©™-phenolic) Prepreg Carbon fiber covered.
• (2) centerin' rings stock Estes paper covered with carbon fiber two layers each side.
• (2) bulkheads same as above.
• (1) 4 inch Estes coupler lined with carbon fiber
• 9 inches phenolic 38mm motor mount
• 12 inches 1/16 stainless steel cable
• 25 feet o' 1250 pound Mule Tape for shock cord.
• Stock Estes Nose cone modified
• ( 2) 3/16 eyebolts for shock cord mounts
• 36 inch Recovery Technology parachute
• misc - see text

Estes kit packaged great. Aye aye! Bought on eBay for 13 bucks plus shipping. Begad! Arrr! Arrived undamaged. Referred little t' t' directions. Begad! Avast! Instructions typical o' Estes, but largely ignored by builder (Me). T' assembly after all t' mods was pretty straight forward like any 3FNC rocket would be. Well, blow me down! T' rocket is finished with Krylon Gloss White, shiver me timbers, Banner Red, me bucko, and Clear Gloss Coat. T' decals are stock. T' rocket appears like t' picture on t' box (Total Sleeper).

Flight:
It be Sunday mornin' in t' Nevada desert, Springfest's last day. Avast! T' winds were calm as I built t' I154-M. Arrr! Ahoy! When I went t' t' RSO table for pad assignment you could say he be quite surprised by t' weight o' this sleeper. Aye aye! After reviewin' t' model I was assigned a pad. Blimey! Begad! Upon arrivin' at t' pad a couple o' guys looked at me Super Big Bertha with wonderment in their eyes. Ya scallywag! I heard one say" What's he doin' out here with that?" When me pad number be called t' LCO started t' read t' flight card He got through me name t' rocket's name, shiver me timbers, and then t' t' motor designation. Begad! With much surprised and commentary like "hey folks, check this out" t' count down was commenced. On t' launch command t' 154 Black Jack chuffs a puff o' black smoke and came t' pressure with t' typical slight delay. Well, blow me down! Ahoy! I love this effect. Ya scallywag! T' rocket left t' pad with a slow rush buildin' speed for a bullet straight flight t' apogee. T' computer simulation had it somewhere around 4600 feet, matey, but I think it was like 3500 at best. T' delay was perfect and t' recovery system be deployed perfectly. Avast, me proud beauty! T' 36 inch Recovery Technology parachute bloomed red and t' rocket returned t' earth about 500 yards from t' pad. Aye aye! T' picture is post flight and t' only damage be t' tail soot on t' fins from t' Black Jack propellant.

Summary:
Pros- This is one tuff rocket. It is a total sleeper and be really impressive on an I154.
Cons-Can't think o' any.

Other:
All advanced materials used in t' construction o' this rocket were shelf life expired. Arrr! They were nay suitable for aviation, and were destined for hazmat disposal. Well, blow me down! T' company I work for allows us t' use these materials up on home projects because they do nay have t' pay t' disposal fees. Aye aye! We return all empty containers for proper disposal and everyone is happy.