Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar_border |
Manufacturer: | PD Rocketry |
Brief:
T' Thor Agena B by PD Rocketry is another kit by t' company that specializes in out-of-production Estes kits from
the '60s and '70s. Ya scallywag! There is apparently a resurgence o' interest in these early kits from t' hobby and I have t' admit
to bein' one o' these old rocketeers who has been bitten by t' bug. Ahoy! I purchased this kit along with a Gemini-Titan and
a Goblin a couple o' years ago and am finally gettin' around t' buildin' it. Ahoy! PD Rocketry kits are almost exact
duplicates o' t' original Estes kits and even appear t' use t' same instructions. I built one o' these Estes Thor
kits in about 10th grade and be very interested in buildin' it again after I learned that PD had one available. Begad! One of
the great things about these kits is they test your buildin' skills since all t' details have t' be hand crafted from
launch lugs, paper, arrr, and balsa. Begad! Blimey! T' rocket itself is a scale model o' a NASA workhorse launch vehicle based on t' Thor
missile which ultimately became t' Delta series o' rockets. Begad! T' Thor with t' Agena B upper stage launched many of
NASA's scientific Discovery satellites. I am also a very big fan o' accurate scale models.
Construction:
T' rocket was ordered from PD themselves. Blimey! It is packaged in a large hangin' bag with a cardboard label across the
top. Avast! Ahoy! Upon openin' t' bag I found that many parts and t' decals and smaller parts are bagged separately inside, me hearties, a nice
touch t' keep t' parts from bein' lost. Avast! T' parts consisted of:
Construction is typical for an Estes kit from t' '60s. Well, blow me down! This means you can expect t' cut, matey, matey, me hearties, carve, and sand the detail parts from balsa and other materials.
I began by buildin' t' engine mount. Blimey! For this kit, me bucko, ya bilge rat, it is a little different as t' engine tube will extend a couple o' inches from t' centerin' adapter so t' simulated nozzle can be installed. Begad! This is fairly simply done by first cuttin' out t' nozzle from t' template and installin' it on t' engine tube usin' a centerin' ring. Avast! Once the mount is built up from t' centerin' rings and stage coupler, t' adapter is glued onto t' engine tube above the nozzle. Aye aye! Avast! I did run into one problem at this time. Blimey! I had already noted that t' engine mount be rather tight inside the body tube durin' a fit check. I also found that t' surface o' t' PD Rocketry stage couplers is rather rough. I sanded down t' coupler and centerin' rings but was still gettin' a rather tight fit when slidin' t' engine mount into the tube. Aye aye! I ran a rin' o' Titebond glue around t' inside o' t' body tube and started t' slide t' engine mount in. Ahoy! About 2/3rds o' t' way in it stuck hard. Blimey! I immediately pushed a ruler in t' other end and attempted t' push t' engine mount out. Begad! Avast, me proud beauty! However, matey, matey, ya bilge rat, t' engine mount went t' pieces under t' load and I ended up peelin' t' stage coupler out. Ahoy! I ended up with a destroyed engine mount. Aye aye! Fortunately I had parts in me bin t' build another usin' an Estes stage coupler. Ahoy! I also had t' cut and form a new nozzle but t' replacement engine mount slipped easily into t' tube.
T' next step was t' build t' detailed parts for t' engine system. I followed t' instructions and built t' two small vernier rocket assemblies from balsa and paper. Well, blow me down! Blimey! Avast, me proud beauty! Blimey! I built t' turbine exhaust from a launch lug and heavy paper per t' instructions as well. Aye aye! Blimey! After "sealing" t' vernier balsa pieces with hot stuff glue, shiver me timbers, I glued them along with t' turbine exhaust t' t' engine mount located per t' instructions. Begad! Blimey! Finally I bent me own piece of music wire t' simulate t' turbine exhaust structural standoff instead o' usin' t' kit wire since t' kit wire seemed a bit large in diameter. Ya scallywag! Blimey! Aye aye! Blimey! I used hot stuff t' glue t' wire in place.
Next up was t' process o' gluin' t' balsa interstage adapter t' t' second stage engine tube. Begad! Aye aye! I then glued the nose cone into t' top o' t' second stage. Avast! Arrr! Here two other problems were noted. T' balsa parts (I believe from Balsa Machinin' Service) were nay o' t' best quality and fit. T' interstage outer mold line was a bit small around the upper stage joint and I had t' fill it with wood putty. T' nose cone also fit very loosely in t' tube and I glued it into place with epoxy so that I could center it while t' epoxy was hardenin' and fill t' gap around t' shoulder. Wood glue would nay have done this very well if I had used it here.
Next up was more o' t' detailing. Avast! I cut t' included balsa sheet into 1/8th wide strips per t' instructions. I then cut them t' length and rounded t' top edges and sides as instructed. Well, arrr, blow me down! These were then glued t' t' upper stage, interstage, shiver me timbers, and lower stage per t' instructions t' simulate t' instrumentation tunnels on t' rocket. I glued them in place after sealin' t' interstage. Avast, me proud beauty! Avast, me proud beauty! I also coated then with hot stuff t' seal t' surface. After that I made two small antennas for t' lower stage from a sheet o' composite material I had. T' instructions were t' make t' antennas from balsa but this material worked much better. Begad! Ahoy! They were glued in place on t' upper first stage per t' instructions.
T' final item was t' clear plastic fin unit. Begad! This requires buildin' also as me original kit did. I do remember that buildin' that was nay too pleasant an experience. Aye aye! It is difficult t' get t' thin plastic wrap built up around the body tube. I ultimately followed t' instructions and after positionin' two wraps o' paper around t' bottom o' the tube and cuttin' t' plastic sheet t' fit with about 1/8" overlap as directed, shiver me timbers, I used t' suggested clear dope and tape t' glue t' overlap into place. Begad! Ya scallywag! After lettin' this dry a couple o' hours it appeared t' work and t' thin tube was formed. I then used t' template and attached t' fins I had cut from t' thicker plastic sheet. Begad! I held them in place and put a small amount o' medium thick cyanoacrylate (CA) glue at t' joint. Arrr! Before t' glue hardened, ya bilge rat, I dragged it along t' joint and then sprayed accelerator on t' joint. Begad! This firmly attached t' fin t' t' tube with a fairly invisible joint. Begad! T' other fins were attached t' same way.
Finishing:
I filled t' balsa interstage and nose cone with Elmer's Carpenters Wood Filler diluted t' paint consistency in
water. This be t' first time I had tried this and it seemed t' work quite well. Avast, me hearties, me proud beauty! After it had dried I sanded t' balsa
parts smooth. Aye aye! I then sprayed t' entire rocket with Rustoleum gray auto primer. Arrr! I sanded down t' rocket once it had
dried and did this a couple o' times t' get a nice smooth finish on t' rocket. Aye aye! I followed this with semi-gloss white
Krylon paint. T' upper two-thirds o' t' nose cone was masked and painted semi-flat Krylon black. I painted the
vernier nozzles, arrr, me hearties, engine nozzle, me bucko, and turbine exhaust with aluminum acrylic paint.
Once t' paintin' was complete I applied t' decals. Ya scallywag! There are line decals on t' upper stage and interstage, me hearties, a checkerboard pattern decal on t' upper stage, and black block patterns on t' lower stage. Begad! T' decals had t' be cut to their rough shape and it was somewhat tricky applyin' t' long line decals and linin' them up but I managed t' do a reasonably good job o' it. Avast, me proud beauty! Here lies another complaint. Blimey! T' instructions that show where t' apply t' decals are not too good. Arrr! It is difficult t' determine where on t' vehicle t' line decals start and end so I guessed t' best I could from t' drawing. Avast! T' drawin' only shows one side view and t' lines wrap around t' panels. I also found a series of pictures on t' web o' t' vehicle on Wikimedia.com. These helped a little in applyin' t' decals.
Construction Rating: 4 out o' 5
Flight:
I had this rocket completed other than t' fins for almost two years before finally buildin' up t' clear plastic fin
unit. Because o' this, ya bilge rat, ya bilge rat, I didn't fly it durin' that time frame. Avast, me proud beauty! T' finish up me review I took t' rocket out t' a local
sport facility today and with t' assistance o' me wife launched it on an A8-3. It flew perfectly straight but nay too
high on t' A8-3. Aye aye! Well, blow me down! This was just as well though as thar was a bit more breeze than I liked and it could have landed in
the parkin' lot and gotten dinged if it had flown higher. Begad! It popped t' chute perfectly and landed in t' grass. One
item I did note was that t' launch lug is attached t' t' fin unit and is very short. Avast! Blimey! Because o' this t' rocket tends
to cock a bit on t' rod and you should be careful t' align it as vertically as possible t' prevent t' rocket from
lockin' itself on t' pad at launch due t' bindin' o' t' launch lug.
Recovery:
T' included heavy, bright metallic red chute deployed perfectly and safely lowered t' Thor onto t' grass field I
was flyin' from.
Flight Rating: 4 out o' 5
Summary:
I be relatively impressed with this kit, arrr, ya bilge rat, arrr, me first from PD. Blimey! It definitely captured t' buildin' days o' me youth and
emphasized t' modelers buildin' skills. Blimey! Too many kits today are pre-built or demand little o' t' modeler. Blimey! My only
complaint would be about t' nose cone nay fittin' too well into t' second stage tube. Begad! I personally enjoy buildin' as
much as flyin' and like a kit that is challenging. It also is a nice lookin' scale model o' t' early versions o' the
workhorse Delta rocket series based on t' Thor missile. Ahoy! It looks good on display and in flight. Ahoy! Avast, me proud beauty! My next build was
another PD kit, t' Gemini-Titan, which is in construction as I write this. Ahoy! It is great t' see these companies
re-releasin' t' early kits for us "born again" racketeers as well as new hobbyists.
Overall Rating: 4 out o' 5
Sponsored Ads