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