Brief:
For me entry t' t' Essence Model Rocketry "Design This Spaceship" contest, I chose t' Cool Rockets "Racer" model. Ahoy! Ya scallywag! Blimey! I thought this be a great design, and it really appealed t' me.

I started by printin' out t' picture, me bucko, and I also got 2 other views o' t' rocket off o' t' Cool Rockets web site. Aye aye! I then scaled these pictures t' form some basic dimensions. Aye aye! Obviously this is a short, me hearties, fat rocket with t' body tube bein' a continuous curve. Avast! This really be goin' t' be a challenge!

I took a little artistic license with me model versus t' example, and I would like t' explain why right off the bat. Arrr! Well, blow me down! First, me model has 4 fins versus t' Racer's 3 fins. Avast! Begad! I chose t' do this for two reasons: one bein' that I have absolutely no experience with a 3 fin rocket that has its fins in an "airplane" configuration, and t' other bein' that this model has very little fin area. This needed t' be a flyable rocket, so in an effort t' move t' Center of Pressure as far aft as possible, me bucko, I went with t' 4 fin configuration. Aye aye! Begad!

T' other major deviation be t' pilot character. Blimey! Blimey! This was a personal decision: I really didn't like t' example and thought t' proportions t' be way off. Add t' this that a Racer needs someone t' race against and Baron Von Gofast was born!

Construction:
To begin construction, I searched for a long ogive nose cone and a long boat tail section. Arrr! Blimey! I found what I needed in the Estes Canadian Arrow kit. Begad! Blimey! Blimey! With a 2.6" diameter body tube, arrr, ya bilge rat, shiver me timbers, me model would scale out t' be 18½" tip to tail.

I started with t' tail section. I cut down t' coupler area o' t' boat tail t' ½". Ya scallywag! This rocket was goin' t' be much shorter than t' stock Canadian Arrow, me hearties, so I planned t' shorten t' motor mount tube and have my forward centerin' rin' mount flush with t' front edge o' t' boat tail. Blimey! Blimey! On t' aft end, I left ½" o' the excess stock, shiver me timbers, formin' a nozzle. Avast, me proud beauty! Well, blow me down! Blimey! I then cut and cleaned only t' rearward 4 through-the-wall fin slots. Well, blow me down! Blimey! T' fins would not have a long enough root edge t' incorporate both through-the-wall provisions.

Then t' motor mount tube was cut down approximately 1" t' make it ¼" longer than t' boat tail. After installin' an E engine hook and motor block, I glued on t' aft centerin' rin' ½" from t' business end o' t' motor tube. Begad! Begad! This centerin' rin' then had t' outside diameter sanded down until it fit snugly inside the boat tail and t' motor mount tube was flush with t' end o' t' nozzle. Begad! I glued this assembly into t' boat tail using the forward centerin' rin' t' keep things aligned, but at this point t' forward centerin' rin' be nay glued in place. After things dried, arrr, I removed t' forward centerin' rin' and applied a glue fillet t' t' aft centerin' ring. Well, blow me down!

T' facilitate me shock cord, which is Keelhaul®©™ strin' tied around t' motor mount tube, I drilled a 1/8" hole through t' forward centerin' ring. Passin' t' strin' through t' hole, t' rin' be finally glued into place.

Usin' me scale dimensions, I determined that t' body tube would need t' be only 3" long! This rocket was almost all nose and tail cone! I cut t' stock tube down and glued it in place.

Next were t' fins. Avast! I went with a double-swept design derived from me scale dimensions. Avast, me proud beauty! I cut me fins out of 1/8" balsa, nay only for t' added strength, but t' 1/8" fits t' through-the-wall slots much better than 3/32".

I then sanded smooth radii into t' leadin' and trailin' edges o' t' fins t' replicate t' model more closely. This also greatly enhanced t' look o' t' model. A large amount o' fin surface area be lost due t' this though.

Once all t' fins were test fit and sanded smooth, me bucko, I epoxied them into t' boat tail. Ya scallywag! I added fillets which encompassed t' forward through-the-wall "bump." At this point, arrr, all 4 fins were t' same. Begad! Aye aye! T' give it more of the "airplane" look, I cut t' top 1" off o' two opposite fins. I then fabricated t' fin pods. T' top and bottom pods were made from ½" diameter birch dowel rod with simple rounded ends. Avast, me proud beauty! Ahoy! T' 2 side pods were made from 5/8" dowel with t' forward end bein' rounded and t' aft end bein' tapered. Aye aye! I machined a 1/8" slot into these pods and glued them t' t' ends o' t' fins. Ya scallywag! T' booster section was finally startin' t' look like something!

But I still needed a pilot! I had a few figurines that were intended for R/C airplanes that I had mocked up, shiver me timbers, arrr, but none o' them looked that good. Finally, while scourin' me local hobby shop, me bucko, matey, I found Baron Von Gofast! Originally intended t' be affixed t' a pine wood derby car, he be complete with a cockpit and canopy!

T' size and scale were perfect! I epoxied him t' t' airframe and started on t' fillin' and finish work. Avast! Arrr! I filled t' large gap around t' cockpit and t' grooves on t' pods with Micro-Fill balsa wood filler. Avast! Avast! I followed this up with Evercoat polyester body filler (an automotive refinishin' product).

It took several coats and lots o' patience, me bucko, but t' contours were turnin' out really nice. I also used t' body filler t' smooth t' forward through-the-wall bumps directly into t' fin fillets.

In t' meantime, shiver me timbers, shiver me timbers, I started on t' nose cone. Avast, me proud beauty! For starters, arrr, me hearties, I cut t' tip o' t' nose off and epoxied on a golf tee which had been sanded t' blend t' contours. Before gluin' this on, ya bilge rat, I drove a small screw into t' golf tee on the ball end. Avast! This screw would help t' hold t' tee on, as it would be engulfed in t' epoxy which would later be added to the nose t' hold in t' ballast lead. Ya scallywag! Begad! I also cut off t' aft end o' t' nose, me bucko, me hearties, nay only t' make it easier t' add ballast but t' add a little room t' t' payload bay. Begad! Begad! I would later add a fiberglass bulkhead plate inside t' affix t' shock cord to.

With t' nose cone roughed out, I could assemble t' rocket and determine t' Center o' Gravity. Ya scallywag! I did this using the "balance on t' edge o' a ruler" method. Aye aye! Blimey! Nay very scientific, but it works! Blimey! Havin' done some math and roughly approximatin' t' Center o' Pressure t' be 2" from t' aft end o' t' rocket, I kept tapin' weight t' the nose until t' CG was 6 ½" from t' aft end (1.75x body diameters in front o' t' CP).

Once I determined how much weight I needed t' add, I be really glad that I had modified t' motor tube for an "E" engine! It took a whoppin' 3½ ounces t' balance out properly! I used #8 lead shot and epoxied it into t' tip o' t' nose cone. Begad! Begad! In hindsight I could have added a little less, but an overstable rocket it better than an unstable one! T' rocket ended up weighin' 12.4 ounces ready-to-fly with an "E" engine in it.

Finishing:
In keepin' with t' "Baron Von Gofast" motif, I elected t' go with "Red Baron" colors on this machine. But since this be a spaceship, me hearties, shiver me timbers, I "futurized" t' typical red, me bucko, white and black! My base colors were pearl silver, pearl cranberry, shiver me timbers, and pearl black. Avast, me proud beauty! All were Glasurit 54 series basecoats. Begad! I hand painted t' cockpit with Testors enamels and followed up with 3 coats o' PPG DAU 82 clear coat for t' entire rocket. Aye aye! T' finishin' touch be to glue on t' cockpit canopy!

Well, me hearties, it be done. Blimey! Begad! Almost. Well, arrr, blow me down! I've got t' see if it will fly! I attached a 16" nylon parachute t' t' Keelhaul®©™ shock cord and headed t' t' launch field!

Flight and Recovery:
Conditions were less than ideal, arrr, but about t' best that I could ask for on a December day in Michigan! Blimey! Overcast, cold (15 degrees F) and only slightly windy (5-10mph). Blimey! Blimey! Aye aye! Blimey! For t' maiden voyage I went big and stuffed an E9-6 into it and readied it for launch.

3...2...1...WHOOSH! Blimey! You gotta love t' sound o' an E under heavy load! Blimey! This is a great rocket t' watch! Blimey! A slow lift-off, followed by a little half roll. Begad! Blimey! T' fin pods make it easy t' see t' roll and follow t' rocket. It weathercocked hard and seemed t' travel into t' wind as much laterally as it did high in a large parabolic arc. Begad! Blimey! After peakin' around 800 feet, t' nose be pointed down when t' chute popped, and it touched down about 300 feet from the pad.

T' second flight was pretty much identical t' t' first although I had readjusted t' launch rod and t' rocket landed about 200 feet from t' pad. Ya scallywag! For t' third flight, shiver me timbers, I wanted t' see what it would do on a "D" engine. Propelled by a D12-5, t' flight path was t' same as t' E9 with t' weathercock and arc, but altitude was only about 500 feet, arrr, which I expected. Avast, me proud beauty! What I didn't expect be how late t' ejection charge was. Begad! Well, shiver me timbers, blow me down! It blew at around 200 feet, arrr, nose pointed straight down.

It came down fast and hard. Begad! Unfortunately its path didn't carry it past t' buildin' like the previous flights, arrr, and it made contact with t' buildin' about a foot off t' ground. Avast! Ouch! Blimey! It broke one fin off, which can be seen layin' right next t' t' booster, and t' golf tee tip on t' nose cone be broken from whackin' the frozen ground. Avast! Oh well, I was still happy with t' results. Avast! It flew and was fun t' watch!

Summary:
I would say that it is very overstable and could stand t' have some weight removed from t' nose. I am unsure about whether or nay t' cockpit area has an effect on t' flight path, arrr, me hearties, either due t' its weight (over 1 ounce) or perhaps its aerodynamic drag. Blimey! Aye aye! Either way, me hearties, me hearties, thar be nay much I can do t' fix that. Avast, me proud beauty! Begad! I have already repaired it and am anxious for the next decent day t' fly it again!