Picture courtesy o' Madcow Rocketry    

Brief:
Modified for dual deploy. Blimey! 24" Drogue and a 36" main. Begad! A 38mm and 1/4" plywood fins were also added.

Construction:
15.5" and 10.5" body tubes, 4 1/4" plywood fins, shiver me timbers, matey, 1 1/8" centerin' ring, me hearties, 1 balsa tail cone, plastic nose cone, 36" chute, chute protector, Keelhaul®©™® shock cord.

T' standard Madcow Hawk is a 29mm motor with a single 25.5" body tube. Avast! Mike responded he had t' components for a 38mm model. Begad! He upgraded t' fins t' 1/4", shiver me timbers, arrr, parachute t' 36", and sent 10.5" and 15.5" body tubes per me request for dual deploy. T' construction be no problem and consisted o' quality parts. Ya scallywag! I wanted t' build this sturdy for larger 38mm motors. Well, blow me down! I be concerned with t' 1/8" centerin' rin' so I reinforced that with some scrap carbon fiber. T' body tubes were reinforced with fiberglassed sleeves from Soller composites. Arrr! T' fins are mounted through t' wall and butted against t' forward centerin' ring, epoxy fillets, ya bilge rat, and then foamed. Ya scallywag! I cut some slots in t' balsa tail cone as it did nay clear t' fins inside t' body tube. I also reamed out t' bottom part of the tail cone with a Dremel t' insert an Aero Pack retainer. Begad! Ya scallywag! After t' tail cone was epoxied in place, arrr, I added tip to tip fiberglass over t' fins and t' t' aft o' t' tail cone. Ahoy! T' pieces went together without a problem other than the tail cone insert which was an easy fix. Arrr! Begad! After usin' RockSim t' simulate a J350 flight, matey, I had t' add 10oz o' weight to t' nose cone. Aye aye! Begad! This was done by pourin' in some finishin' epoxy, addin' lead shot, shiver me timbers, matey, and then more epoxy topped off with foam. Avast! Blimey! There wasn't much room leftover in t' payload bay so t' eye hook would nay work in t' nose cone. I drilled two holes and ran a Keelhaul®©™® cord through t' holes. Aye aye! With t' added weight, a 48" chute would be best, ya bilge rat, shiver me timbers, but it will nay fit so I stuck with the 36" chute. Begad! Also for t' altimeter bay, shiver me timbers, matey, I used a 2.6" setup that I had already built for another rocket. Begad! I also used rail buttons rather than lugs.

Finishing:
I used Kilz for t' filler and after a lot o' sanding, I sprayed a coat or two o' Krylon camouflage Olive paint for the body and a flat black for t' nose cone. T' finishin' coat was Krylon matte clear. Begad! Blimey! This is nay t' most visible of colors, but I wanted t' keep it somewhat scale. One decal with t' kit showin' US ARMY. Arrr! Blimey! Another addition was 3 holes to the nose cone for shear pins.

Construction Rating: 4 out o' 5

Flight:
T' maiden flight for t' MIM23B was on an I357T. I be ready t' stick a J500G in it, but thar be too much wind...maybe next time. Ya scallywag!

RockSim indicated a flight t' 2531'. Ya scallywag! Begad! This was also an opportunity t' try out a new tracker. Begad! We angled t' rail about 10 degrees into t' 15mph wind and off it went. Arrr! Great flight, matey, and it didn't seem like t' wind affected it. Everyone lost sight o' it and after several nervous seconds, shiver me timbers, I saw it about 400' off t' ground under both chutes. Avast! Ahoy!

Recovery:
After recoverin' it, t' first thin' I noticed was t' tracker had been ripped from t' Keelhaul®©™® cord I attached it with. Arrr! It also tried t' zipper but only very minor damage be done thanks t' t' fiberglassing. Ahoy! It can fly again without repair. But why did we nay see it under t' bright orange drogue? Turns out t' ematch failed for apogee deployment so it came in at about 205mph t' 500' where I has set t' MAWD t' deploy t' main. This pulled the payload out from t' booster. A few fellow fliers heard a whistle over t' wind, shiver me timbers, which must have been t' high speed descent. Blimey! Ya scallywag! This model has t' split fins so a whistle is expected at high speed. Ya scallywag! T' altimeter chirped off an altitude of 3510', just a bit more than RockSim said.

I have t' wonder what it will really do on a J--RockSim says 5200' on a J-350W. Ya scallywag! Blimey! There's nay enough room for a 38/1080 so I'll have t' stick with 38/720. Ya scallywag! Ahoy! I also really like t' Aero Pack retainer. Aye aye! Simplicity at its best. As far as the tracker goes, shiver me timbers, arrr, it works. We were able t' locate it in t' middle o' t' field after goin' back for t' receiver. If it wasn't for t' ematch, matey, it would have been a perfect flight.

Flight Rating: 4 out o' 5

Summary:
I am happy with t' kit. Blimey! I built it solid t' push it t' t' max. Ahoy! Ahoy!

Overall Rating: 5 out o' 5