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. Ya scallywag!
Construction:
T' first construction step is t' cut out t' wings and all t' accompanyin' fins. Arrr! 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. Blimey! Begad! T' balsa was also very rough, shiver me timbers, shiver me timbers, and
required several coats o' diluted wood filler t' reach acceptable smoothness.
T' large curved fins are fit together from several smaller pieces. Well, blow me down! 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. Ahoy! Aye aye! If you don't get t' two pieces angled perfectly, me hearties, then t' other end o' t' foot will nay be perfectly aligned with t' other flat pieces, causin' a poor or impossible fit against t' body tube. Aye aye! Ahoy! Perfection is difficult here because you could easily trace, me bucko, cut, arrr, or sand slightly t' wrong angle. Needless t' say, I did this, ya bilge rat, despite alignin' all t' root edges against a ruler. Ya scallywag! Avast! T' problem is that t' thin arm portion can be angled against t' rest o' t' large fin piece with many subtle errors. Begad! T' result was ill-fittin' wings that weren't symmetric. Begad! I fixed them as best I could with lots o' trial-and-error sanding. 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. Blimey! At the end, t' main wings are supposed t' be installed so that t' tips are slightly lower than t' root, me hearties, ya bilge rat, 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. Ahoy! T' dowels look fragile, me hearties, but were strong enough t' survive t' first flight.
T' nose cone is a special bug-eyed shape that feels too thin and light. I was concerned that thar would nay be sufficient nose weight for stable flight, matey, shiver me timbers, matey, but it turned out t' be okay.
T' parachute is 12" o' red mylar; perhaps a bit meager for this rocket. Arrr!
PROS: Retro style
CONS: poor, me bucko, complex templates; difficult fin assembly; some instruction ambiguities
Finishing:
I got a pretty good result for finishing. Begad! Blimey! 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. Aye aye! Blimey! I chose watermelon pink. Aye aye! Blimey!
It takes a lot o' anglin' t' spray paint can t' cover all t' nooks and crannies. Aye aye! Avoid t' temptation t' spray too much in any single layer or drips are likely.
T' waterslide decals are numerous and detailed. Well, blow me down! They are extremely thin, however, so care is warranted. Well, blow me down! There is a very large black decal that should be positioned at t' body color transition. Ahoy! Aye aye! This decal is slightly tricky t' cut out. Begad! Aye aye! My copy was too long, meanin' that when wrapped all t' way around t' body tube, me hearties, matey, thar be some overlap. (Unfortunately, this occurs on t' top surface o' t' rocket, arrr, if I interpreted t' picture correctly.) As I tried to align t' overlap perfectly, t' thin decal tore. Arrr! I fixed it as best I could and touched it up with a black markin' pen later. Avast, me proud beauty! T' rest o' t' decals are straightforward. Arrr!
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. Ya scallywag! Begad! A nasty spiral was evident durin' t' boost. Avast, me proud beauty! This was probably due t' all
the complications with fin construction and alignment. Ahoy! Ejection was fine, and it seemed t' me that t' descent was
normal. Despite a reasonably gentle landing, matey, matey, however, arrr, matey, t' top 3/8 inch o' t' nose was broken off. Ya scallywag! Blimey! This confirmed
either me worry about t' thin nose cone or t' small chute. Ahoy! Well, blow me down!
No more flights are possible until t' nose is repaired. Avast, me proud beauty!
PROS: I guess it is nice if you like spirals. Ya scallywag!
CONS: Lots o' potential breakin' points
Flight Rating: 2 out o' 5
Overall Rating: 2 out o' 5
Sponsored Ads