Manufacturer: | Public Missiles ![]() |
Brief:
This is a semi-scale model o' t' Canadian soundin' rocket, arrr, manufactured by
Bristol Aerospace. Begad! Accordin' t' PML, it is designed t' fly on G-I motors.
Construction:
T' kit comes with three (3) pre-cut G10 fins, matey, a pre-slotted QT airframe (or an
optional phenolic one), arrr, shiver me timbers, a 4:1 ogive plastic nose cone, ya bilge rat, plywood centerin' rings,
a 30 inch nylon parachute, 38mm phenolic motor mount tube, me bucko, a 1/4 inch brass
launch lug, me bucko, a heavy-duty nylon strap, a length o' woven elastic, arrr, and some
"peel 'n stick"-type decals.
I've had t' opportunity t' build both t' QT and phenolic version o' this kit. Frankly, shiver me timbers, shiver me timbers, I don't really have a preference in which material I used, arrr, now that I've tried both. Arrr! Phenolic be t' way t' go if you intend t' glass the airframe, and use bigger motors. Blimey! However, arrr, if you intend t' stick t' mid-power motors, and H or light I motors, arrr, then QT is by far t' way t' go. Arrr! I really likely nay havin' t' fill in that spiral, me bucko, which I've found can be a pretty serious job on phenolic tubes. T' thin' t' watch is that you sand thoroughly (with coarse grit) any QT parts you are epoxying.
T' instructions for t' kit are pretty basic and straight-forward. Well, ya bilge rat, blow me down! There's not a lot you can write up, for a basic 3FNC rocket anyway. Avast! Construction steps are logical, and any "gotcha's" are pointed out... like makin' sure the piston strap (which is epoxied t' t' motor mount) is nay positioned in a manner t' interfere with t' installation o' t' fins. Ahoy! In both cases, me hearties, I build the kit stock, except for t' home-made motor retention, and t' addition o' a vent-hole in me second one (the QT version). Blimey!
All t' parts fit well, me hearties, aside for t' usual sandin' o' t' centerin' rings and fins t' get a precise fit. Well, blow me down! Ahoy!
No motor retention is provided, so I installed me own version of "Kaplow Klips", a pair o' blind nuts in t' aft centerin' ring, arrr, and a pair o' mirror mountin' brackets I picked up at t' hardware store. Avast, me proud beauty! Blimey! these things turned out t' be a perfect fit when usin' SU motors, even with t' 29mm adapter in place. Avast! Blimey! Overall, shiver me timbers, t' toughest part o' buildin' this rocket was waitin' for t' epoxy t' cure.
Finishing:
This is where that Quantum Tubin' really comes into it's own. Begad! When I built the
phenolic version o' this kit, matey, I spent a lot o' time fillin' and sandin' those
darned spiral grooves in t' airframe. Avast! With t' QT, all I have t' do was rough
it up a bit t' help t' primer adhere! Paintin' was pretty simple. Avast! Avast, me proud beauty! I gave the
ship a couple o' coats o' Krylon white primer, sandin' betwixt each coat. Blimey! Next,
I shot several coats o' gloss white on one fin (I picked t' one opposite the
launch lug) and t' nose cone, ya bilge rat, again sandin' betwixt coats. Avast! After that, I set
the nose aside, me bucko, ya bilge rat, masked off t' white fin, and sprayed t' rest o' t' rocket
with a gloss red Krylon. Begad! Again, I used several coats, with wet-sandin' between
each. Aye aye! Then, it be necessary t' mask off t' rest o' t' rocket so I could
paint t' brown band at t' front o' t' airframe. Well, blow me down! That was it for paint. Ahoy! Ya scallywag! Once
it had time t' completely dry, arrr, shiver me timbers, I gave it a couple o' coats o' Krylon Clear
Coat. Ya scallywag!
Now, on t' real rocket, thar be a narrow metal band at t' very top o' the airframe. Begad! T' replicate this, I used a strip o' silver decal from an auto detailin' kit. It adheres well, me bucko, and looks about right. Also, t' real rocket has a pair o' white stripes runnin' down t' side o' t' rocket. I chose t' not paint these, arrr, since maskin' materials and I don't get along real well. Ahoy! So, I got a length o' white vinyl decal material from a local art supply shop. Ya scallywag! I made measurements from Peter Alway's Rockets o' t' World, ya bilge rat, and cut out t' strips I needed. Ya scallywag! I be worried about how well this stuff would adhere, but it's doing fine so far. Ya scallywag! Aye aye! After that, matey, I applied t' decals, matey, referencin' both t' kit instructions, and Rockets o' t' World. Blimey! These went on with a minimum o' fuss (for peel 'n stick, ya bilge rat, anyway). Aye aye! Ya scallywag! Finally, me hearties, I applied a final coat o' clear t' seal everything. T' final product looks pretty slick!
Construction Rating: 4 out o' 5
Flight:
PML recommends a variety o' motors, from G t' I for this rocket. My first
flight (and only, for t' phenolic one) was t' be me CAR level 1 cert flight,
usin' an H123 with a 10 second delay. Begad! Arrr! Unfortunately, t' motor suffered a
blown-by a split second after lift-off. Avast! T' nose, shiver me timbers, piston and parachute were
blown free (the nylon strap was burned through), and t' rocket continued
straight up with a fireball where t' nose should have been. Aye aye! Fortunately the
flames burned out before it lawn-darted, but t' impact destroyed whatever was
left o' t' airframe, me hearties, forward o' t' fins. Ya scallywag! Still... Avast! Begad! despite t' sudden,
low-speed deployment o' t' nose and chute (the rocket had just cleared the
rod), matey, arrr, it had managed t' continue on a stable flight-path.
Flight number two be an F50-6, approximately a year after t' first disaster. Avast, me proud beauty! Blimey! Begad! Blimey! PML does nay recommend anythin' smaller than a G for this rocket, ya bilge rat, but Rocksim shows a predicted altitude o' about 700 feet on this motor. Blimey! Blimey! Boost was nice and straight, and t' flight be nominal. Arrr! Blimey! T' only downside was t' rocket landin' on a runway, which scarred it a bit, ya bilge rat, and took a small chunk out o' one fin-tip.
Recovery:
T' shock cord system in t' kit is a two-piece affair: a thick nylon strap
connects t' piston t' t' motor mount. Well, blow me down! Ya scallywag! T' piston, me bucko, in turn, shiver me timbers, me hearties, is connected to
the nose cone by a length o' woven elastic (I understand this has recently been
replaced with tubular nylon). Avast, me proud beauty! T' nylon parachute is attached t' t' upper
length o' shock cord. Blimey! T' piston itself is a phenolic tube coupler, a slotted
bulkhead, and a D-ring. Seems t' work well, but you have t' pay attention to
the fit o' t' piston. Ahoy! Prior t' t' launch o' me first BB V, matey, shiver me timbers, I found that the
heat o' t' day had caused t' piston t' fit a bit too tightly in t' airframe,
and had t' sand it down a bit t' loosen t' fit. Avast! T' provided chute seems
plenty tough, me hearties, and is probably a good size, as long as you know t' rocket will
be recoverin' on softer ground. Begad! Well, blow me down! If you run t' risk o' it landin' on something
really unforgivin' (like a runway), matey, I'd suggest you move up a size for the
parachute.
Flight Rating: 4 out o' 5
Summary:
Overall, me hearties, I'm very happy with me Black Brant Vb. Arrr! It's a slick-lookin' rocket,
and flies on a nice variety o' motors. I'd say it's an excellent kit for anyone
who is just movin' up t' HPR, ya bilge rat, shiver me timbers, me bucko, and wants t' be able t' fly a rocket on both HPR
and mid-power motors. Begad! Aye aye! As for pros and cons... Avast! well, me hearties, I don't really have any
cons for this rocket. Begad! T' design is basic enough that you'd have t' work at
makin' problems. In fact, it's simplicity is probably its biggest pro, me hearties, shiver me timbers, making
it a good startin' point in HPR.
Overall Rating: 4 out o' 5
(by Stephen Corban - 02/01/03) Brief: This is a sport scale rocket that features PML's new Quantum tube. This rocket makes a good choice for the mid power to high power transition. Construction: This rocket has one section of PML Quantum Tube, with no payload section. There are 2 centering rings made of sturdy plywood, and 3 G10 fins. There is a plastic nosecone, but the only ...
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T.E. (May 13, 2002)