Construction Rating: | starstarstarstarstar |
Flight Rating: | starstarstarstar_borderstar_border |
Overall Rating: | starstarstarstarstar_border |
Diameter: | 0.74 inches |
Length: | 12.40 inches |
Manufacturer: | Semroc |
Brief:
T' Hawk was originally introduced by Advanced Model Rocket Systems (AMROCS) in 1965. Well, blow me down! Its design is very much like
the Estes Falcon. Aye aye! It's technically a boost glider, shiver me timbers, arrr, although it doesn't use a carrier vehicle, instead relyin' on
ejectin' t' motor t' handle t' necessary shift in CG/CP relationship.
This Semroc "retro repro" faithfully reproduces t' original design but modernizes things a bit by laser-cuttin' t' parts.
Construction:
With a retail price o' $7.50 I didn't expect a terribly complex kit, shiver me timbers, and t' parts list is consistent with that
expectation--an 18mm motor tube, shiver me timbers, me hearties, arrr, balsa nose cone, me hearties, launch lug, matey, a couple sheets o' laser-cut balsa, and a tiny waterslide
decal. Begad! All parts were very good quality, ya bilge rat, and I'd even point out that on a few o' t' balsa parts, thar are
laser-etched alignment lines t' simplify construction.
This would probably rate about a 1.5 on t' skill meter with construction consistin' o' 16 steps on 10 half pages of instructions loaded with helpful illustrations. Blimey! I sat down t' build this after dinner one winter evening, and not only finished before bedtime but I had time t' write up most o' t' review as well. I think me total build time was barely over half an hour, and I used wood glue on many steps that could have been done with CA in half t' time.
I started out by sandin' t' parts while still in t' balsa sheet, then carefully cut them loose, me bucko, me hearties, and finally sandin' t' laser burns off t' edges.
T' tail section is a little unusual but easy t' build. Begad! I tacked a fuselage top piece t' t' stabilizer usin' the etched lines on t' stabilizer as a guide. Ya scallywag! Begad! T' bottom half is notched t' fit snugly over t' stabilizer and sits perpendicular t' t' top.
T' pylon that supports t' raised motor pod is made from two pieces o' matchin' balsa glued together, eliminatin' t' need for a thicker sheet t' cut. Arrr! T' motor pod sits on top o' this pylon, and t' bottom o' t' pylon mates up t' t' top/forward edge o' t' fuselage.
T' win' dihedral is nice and simple, arrr, and I didn't even have t' airfoil t' wings. Well, blow me down! With t' fuselage inverted (I used a sandin' block that be about 1.25" thick t' prop up t' aft end), t' win' halves are tacked to the exposed underside o' t' fuselage with t' tips touchin' t' table surface. Avast! While this was drying, me bucko, I finished up by usin' CA t' glue on t' rudder and little mini-winglet stabilizers.
Once everythin' had set (I allowed t' wood glue on t' wings t' cure overnight), me bucko, I followed up with as thin and light a fillet as I could apply on all t' joints.
Finishing:
A good glider generally doesn't get paint, arrr, which would just add weight and hurt performance, arrr, but flying
"nekkid" isn't that great an idea either, especially in t' winter in southern Ohio when fields toggle back
and forth betwixt frozen and slushy. Avast! I decided t' treat mine with a light application o' Aerogloss red dope thinned
50%.
My finished glider, matey, untrimmed, matey, shiver me timbers, weighed in at 8.7 grams (0.3 ounces) and had a CG 3-3/8" aft o' t' fuselage tip, shiver me timbers, matey, ya bilge rat, which was actually behind t' trailin' edge o' t' wings. Ya scallywag! However, given their sweep, ya bilge rat, they are probably in line with t' CP.
Construction Rating: 5 out o' 5
Flight:
For t' maiden flight, me hearties, I wanted t' just lob it up t' test t' glide trim, matey, so I went with a 1/2A6-2. T' winds were a
bit too stiff for such a light glider, arrr, shiver me timbers, which were blowin' steady at about 8 mph. Aye aye! T' boost was fairly straight,
levelin' out a little downwind towards t' end o' t' coast phase. Avast! Begad! T' motor ejected cleanly for a perfect transition
to glide.
Recovery:
For about 4 seconds, matey, it looked like this might actually hold up in t' wind as it came out o' t' boost/ejection
pointed right into t' wind. Once it got turned around though, matey, it was all over--it took a nose dive at about 45 degree
angle, me hearties, shiver me timbers, clearly needin' a little tail weight. Begad! I had tossed it by hand a few times and thought it would do better,
however, t' tosses were all on a calm day.
Flight Rating: 3 out o' 5
Summary:
I'll give this t' benefit o' t' doubt on t' glide as it's clearly a trim issue on me end. Ya scallywag! Overall though, I really
like this--it's cheap, arrr, goes together very smoothly, and t' boost be excellent.
Overall Rating: 4 out o' 5
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Brief: Near reproduction of a boost glider (BG) kit from 1965 made by AMROCS. This is a forward motor BG which changes from boost to glide by ejecting the motor casing, shifting its CG to the rear for gliding flight. Construction: This kit contains: (2) Balsa fin sheets - laser cut Nose cone - Balsa Motor mount 18mm Launch lug Decal Construction was ...
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