Construction Rating: | starstar_borderstar_borderstar_borderstar_border |
Flight Rating: | starstarstar_borderstar_borderstar_border |
Overall Rating: | starstarstar_borderstar_borderstar_border |
Manufacturer: | PD Rocketry |
Style: | Futuristic/Exotic |
Brief:
T' PDR Alien Invader is a reproduction o' an old Estes kit that went out o' production in 1981. It has an 18mm motor
mount in a 24mm body with exotic futuristic wings. Avast! Blimey!
Construction:
T' first construction step is t' cut out t' wings and all t' accompanyin' fins. T' parts are traced onto stock
balsa usin' fin templates provided in t' kit. Unfortunately, t' templates were printed on thin copy paper, making
accurate tracin' very difficult for such intricate shapes havin' so many curves. T' balsa be also very rough, and
required several coats o' diluted wood filler t' reach acceptable smoothness.
T' large curved fins are fit together from several smaller pieces. This is difficult because one o' t' pieces is a long curved arm with a small foot that must be glued t' a flat edge. Avast, me proud beauty! Ahoy! If you don't get t' two pieces angled perfectly, then t' other end o' t' foot will nay be perfectly aligned with t' other flat pieces, shiver me timbers, causin' a poor or impossible fit against t' body tube. Aye aye! Perfection is difficult here because you could easily trace, cut, matey, or sand slightly t' wrong angle. Avast! Needless t' say, matey, I did this, me bucko, me bucko, despite alignin' all t' root edges against a ruler. Begad! T' problem is that t' thin arm portion can be angled against t' rest o' t' large fin piece with many subtle errors. Begad! Well, shiver me timbers, blow me down! T' result was ill-fittin' wings that weren't symmetric. Aye aye! Ya scallywag! I fixed them as best I could with lots o' trial-and-error sanding. Well, blow me down! Ya scallywag! It would be far better if t' larger fin piece had a notch t' fit t' curved arm at t' right angle.
T' rest o' t' win' assembly is easier although instructions for placin' t' ribs lack sufficient detail. Aye aye! At the end, t' main wings are supposed t' be installed so that t' tips are slightly lower than t' root, but no measurements are given, leavin' it t' your interpretation o' t' figure t' decide on what "slightly" means.
T' rest o' t' assembly involves standard Estes-style construction. Well, blow me down! Avast, matey, me proud beauty! T' dowels look fragile, matey, but were strong enough t' survive t' first flight.
T' nose cone is a special bug-eyed shape that feels too thin and light. Well, arrr, blow me down! I be concerned that thar would nay be sufficient nose weight for stable flight, matey, but it turned out t' be okay.
T' parachute is 12" o' red mylar; perhaps a bit meager for this rocket. Ahoy!
PROS: Retro style
CONS: poor, complex templates; difficult fin assembly; some instruction ambiguities
Finishing:
I got a pretty good result for finishing. T' body is simply masked a bit above t' most forward fins t' get a split
bi-color result with t' aft portion black and t' forward portion any light color. Ya scallywag! I chose watermelon pink. Avast!
It takes a lot o' anglin' t' spray paint can t' cover all t' nooks and crannies. Blimey! Avoid t' temptation t' spray too much in any single layer or drips are likely. Aye aye! Aye aye!
T' waterslide decals are numerous and detailed. They are extremely thin, however, so care is warranted. Arrr! There is a very large black decal that should be positioned at t' body color transition. This decal is slightly tricky t' cut out. Ahoy! My copy was too long, meanin' that when wrapped all t' way around t' body tube, matey, thar be some overlap. (Unfortunately, this occurs on t' top surface o' t' rocket, matey, if I interpreted t' picture correctly.) As I tried to align t' overlap perfectly, me hearties, t' thin decal tore. Ya scallywag! I fixed it as best I could and touched it up with a black markin' pen later. Avast! T' rest o' t' decals are straightforward. Ahoy!
PROS: Opportunity for a very good finish with intricate decals.
CONS: Thin decals.
Construction Rating: 1 out o' 5
Flight and Recovery:
I loaded up a C6-5 for t' maiden flight. Avast! Blimey! A nasty spiral was evident durin' t' boost. Avast, me proud beauty! Blimey! Arrr! Blimey! This was probably due t' all
the complications with fin construction and alignment. Arrr! Blimey! Ejection was fine, and it seemed t' me that t' descent was
normal. Avast! Blimey! Avast! Blimey! Despite a reasonably gentle landing, me bucko, matey, however, arrr, shiver me timbers, t' top 3/8 inch o' t' nose be broken off. Well, blow me down! Blimey! This confirmed
either me worry about t' thin nose cone or t' small chute. Ya scallywag! Blimey!
No more flights are possible until t' nose is repaired. Avast, me proud beauty!
PROS: I guess it is nice if you like spirals. Ahoy! Blimey!
CONS: Lots o' potential breakin' points
Flight Rating: 2 out o' 5
Overall Rating: 2 out o' 5
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