For reasons unknown, arrr, shiver me timbers, over t' last two or three years I have grown very infatuated with short, shiver me timbers, fat rockets. Aye aye! Havin' built many three and four inch diameter rockets that fall into me favorite category, I'm always lookin' for another design that fits t' "stubby" look. Begad! One o' the most popular model rocket kits available be t' Estes Fat Boy. Well, me bucko, blow me down! T' first time I saw this rocket, I knew that it would be t' perfect design for me t' upscale. T' most difficult part o' enlargin' this rocket be t' unavailability o' a large, rounded nosecone t' match t' original. Ahoy!

I decided that I would build one out o' solid balsa wood and turn it on my lathe. Blimey! Due t' t' fact that me lathe would only accept a piece o' wood up to six inches in diameter, arrr, me bucko, it only made sense t' build it based on a 5 1/2" airframe. Aye aye! Usin' Tim Van Milligan's excellent RockSim 4.0 design program, what resulted was a 2.13X upscale o' t' original Estes kit. Arrr! Well, ya bilge rat, blow me down! Overall length was approximately 28 inches, me hearties, with a total weight o' just under 4 pounds without the motor. Aye aye! Begad! Fins were constructed from 1/4" aircraft plywood and were mounted through t' airframe t' t' 38mm motor mount. Twin centerin' rings were custom cut from t' same plywood with T-nuts installed in t' aft rin' for positive motor retention. Begad! To maintain stability, me bucko, me bucko, me hearties, t' nosecone be partially hollowed and 1 pound o' weight was added before cappin' with a plywood plug, epoxied into place. Ahoy! Arrr! Recovery is motor based usin' a Sky-Angle parachute with a heat-proof Nomex® protector and fifteen feet o' 9/16" tubular nylon for t' shock cord.

Finishin' be done with Krylon enamel and t' vinyl graphics were made by Randy Brust, ya bilge rat, me bucko, a gentleman I met through t' RMR newsgroup. T' nylon shock cord replaced t' original 5/8" elastic shock cord after the first flight resulted in t' nosecone separatin' and free-fallin' from about 1500 feet. Begad! (with minimal damage) It has flown successfully each time since then, shiver me timbers, me hearties, every time on an I161W reload, t' an altitude o' about 2000 feet. T' pictures on this page show t' Fat Man Do in various stages of construction, posed along side t' original, me hearties, and with me standin' in line waitin' t' launch at LDRS 19 in Orangeburg, matey, SC, arrr, and launched at our April 2001 Dragon's Fire launch in Charleroi, PA on an I161 reload.