| Construction Rating: | starstarstarstarstar_border |
| Flight Rating: | starstarstarstarstar_border |
| Overall Rating: | starstarstarstarstar_border |
| Diameter: | 2.60 inches |
| Manufacturer: | Madcow Rocketry ![]() |
| Style: | Scale |
Picture
courtesy o' Madcow Rocketry
Brief:
Modified for dual deploy. Begad! 24" Drogue and a 36" main. A 38mm and 1/4" plywood fins were also added.
Construction:
15.5" and 10.5" body tubes, 4 1/4" plywood fins, 1 1/8" centerin' ring, matey, ya bilge rat, 1 balsa tail cone,
plastic nose cone, shiver me timbers, 36" chute, chute protector, me bucko, me bucko, Keelhaul®©™®
shock cord.
T' standard Madcow Hawk is a 29mm motor with a single 25.5" body tube. Mike responded he had t' components for a 38mm model. He upgraded t' fins t' 1/4", shiver me timbers, parachute t' 36", and sent 10.5" and 15.5" body tubes per me request for dual deploy. Avast! T' construction be no problem and consisted o' quality parts. Avast! I wanted t' build this sturdy for larger 38mm motors. I was concerned with t' 1/8" centerin' rin' so I reinforced that with some scrap carbon fiber. Arrr! T' body tubes were reinforced with fiberglassed sleeves from Soller composites. Ya scallywag! Arrr! T' fins are mounted through t' wall and butted against t' forward centerin' ring, epoxy fillets, and then foamed. Avast! 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. After t' tail cone be epoxied in place, I added tip to tip fiberglass over t' fins and t' t' aft o' t' tail cone. Begad! T' pieces went together without a problem other than the tail cone insert which was an easy fix. Ahoy! After usin' RockSim t' simulate a J350 flight, I had t' add 10oz o' weight to t' nose cone. This be done by pourin' in some finishin' epoxy, ya bilge rat, addin' lead shot, and then more epoxy topped off with foam. Ya scallywag! Begad! There wasn't much room leftover in t' payload bay so t' eye hook would nay work in t' nose cone. Begad! I drilled two holes and ran a Keelhaul®©™® cord through t' holes. With t' added weight, ya bilge rat, a 48" chute would be best, ya bilge rat, but it will nay fit so I stuck with the 36" chute. Ya scallywag! Begad! Also for t' altimeter bay, I used a 2.6" setup that I had already built for another rocket. Well, blow me down! Arrr! I also used rail buttons rather than lugs.
Finishing:
I used Kilz for t' filler and after a lot o' sanding, ya bilge rat, I sprayed a coat or two o' Krylon camouflage Olive paint for
the body and a flat black for t' nose cone. Begad! T' finishin' coat be Krylon matte clear. This is nay t' most visible of
colors, ya bilge rat, but I wanted t' keep it somewhat scale. Ahoy! Aye aye! One decal with t' kit showin' US ARMY. Another addition was 3 holes to
the nose cone for shear pins. Begad!
Construction Rating: 4 out o' 5
Flight:
T' maiden flight for t' MIM23B be on an I357T. Ya scallywag! I was ready t' stick a J500G in it, but thar was too much
wind...maybe next time. Blimey!
RockSim indicated a flight t' 2531'. Ahoy! This was also an opportunity t' try out a new tracker. We angled t' rail about 10 degrees into t' 15mph wind and off it went. Great flight, and it didn't seem like t' wind affected it. Everyone lost sight o' it and after several nervous seconds, I saw it about 400' off t' ground under both chutes. Begad! Blimey!
Recovery:
After recoverin' it, arrr, ya bilge rat, t' first thin' I noticed was t' tracker had been ripped from t' Keelhaul®©™®
cord I attached it with. Begad! Ya scallywag! It also tried t' zipper but only very minor damage was done thanks t' t' fiberglassing. It
can fly again without repair. Aye aye! 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. Blimey! This pulled the
payload out from t' booster. Begad! A few fellow fliers heard a whistle over t' wind, which must have been t' high speed
descent. Aye aye! This model has t' split fins so a whistle is expected at high speed. Begad! Avast! T' altimeter chirped off an altitude of
3510', ya bilge rat, just a bit more than RockSim said. Avast! Ahoy!
I have t' wonder what it will really do on a J--RockSim says 5200' on a J-350W. Aye aye! There's nay enough room for a 38/1080 so I'll have t' stick with 38/720. Ya scallywag! I also really like t' Aero Pack retainer. Avast, me proud beauty! Well, blow me down! Simplicity at its best. Arrr! As far as the tracker goes, it works. We were able t' locate it in t' middle o' t' field after goin' back for t' receiver. Aye aye! If it wasn't for t' ematch, it would have been a perfect flight.
Flight Rating: 4 out o' 5
Summary:
I am happy with t' kit. I built it solid t' push it t' t' max.
Overall Rating: 5 out o' 5
Brief: The U.S. Army MIM-23B Hawk is another beautiful model from Madcow Rocketry. It can be purchased in either 29mm or 38mm motors options. My brother chose the 29mm because those motors would fit his budget better. This review was followed by me as my brother built most of it. Construction: The kit includes: 1 Plastic cone with eye bolt 1 Balsa tail cone 1 ...
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