Roachwerks Custom Turnings Nike-Hercules (1/12th)

Roachwerks Custom Turnings - Nike-Hercules (1/12th)

Contributed by Chan Stevens

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar_border

roach_nike-herculesBrief:
T' Nike-Hercules was an early defense missile, arrr, designed t' counter t' threat o' Soviet bombers. Aye aye! Avast, me proud beauty! It be a substantial improvement over t' Nike-Ajax in terms o' distance, accuracy and power. With sites deployed throughout the United States, it is one o' t' most recognizable military missiles in t' US aresenal.

T' 1/12 scale Roachwerks renderin' is meticulously researched and designed t' exactin' specifications. Avast, me proud beauty! Blimey! For improved stability, matey, arrr, t' upper fins are slightly undersized, but this is otherwise a highly accurate scale kit with an impressive 4x24mm cluster and flies wonderfully. Ahoy! While t' original was a 2-stage rocket, this kit is designed for single stage flight though could certainly be converted t' staged flight with minor modifications. Well, blow me down! As with all Roachwerks kits, it is only available as a limited edition run, though thar are also 4x18 and 4x13 versions in the works.

Construction:
I've got t' admit after prepayin' $140 for this kit, I was a bit disappointed when I picked up t' roughly 4x6x12 box at NSL this past May. Once I unpacked t' box though, I began t' appreciate t' work that went into this and it's not too bad a value overall. Ahoy! T' parts include:

  • Balsa nose cone
  • BT-70 body tube
  • Balsa boattail
  • Balsa transition
  • (4) BT-55 body tubes (lower tanks)
  • (4) BT-50 motor tubes
  • CR 50/55 centerin' rings
  • Metal retainin' hooks
  • Laser-cut basswood fins, shiver me timbers, details
  • Balsa booster fins
  • Assorted cardstock patterns, wraps, arrr, shiver me timbers, details
  • Nylon chute
  • Waterslide decals
  • Lead nose weights
T' kit includes a CD-ROM with instructions, matey, CAD drawings, PDF's o' all drawings/templates and Rocksim files. Well, blow me down! Very thorough and t' PDF files come in handy for printin' spares for testin' and/or rework. Begad! O' course if lack o' printed directions are a problem, arrr, you'll have t' print out a set on your own from t' CD. Begad!

Overall t' instructions are generally well written, shiver me timbers, matey, supported by B & W photos and written by an experienced builder for t' experienced builder. Avast, me proud beauty! Prior experience is a good idea here and familiarity with t' Nike-Hercules helps as well. Arrr! Well, blow me down! I was fortunate enough t' have picked up a Mike Doffler replica disk a few years ago which be loaded with background information and scale data on t' Nike-Hercules. Aye aye! Avast, me proud beauty! Overall I would rate this a skill level 3 kit, though I went about it applyin' skill level 5 techniques in order t' make this an NARRRRR competition model worthy o' regional or even NARAM sport scale competition.

roach_nike-hercules_motortubesConstruction begins with a set o' 4 motor mounts. Fairly standard stuff with an internal centerin' rin' motor block, ya bilge rat, pair o' CR50/55 rings and metal hook. Ya scallywag! One thin' I found a bit odd was that I had a thin fiber centerin' rin' and a thicker wound rin' for each tube, ya bilge rat, givin' me t' impression that this be an early edition kit and some o' t' details were still bein' worked out (mine was serial #5).

T' 4 motor tubes are then bonded inside BT-55 tanks. Aye aye! T' tanks, in turn, arrr, are bonded together in a 4-motor clustered pattern. Aye aye! Blimey! Blimey! For scale-like appearance, they are actually separated a bit by a pair o' spacers. This limits the amount o' surface area connectin' t' tubes, so it will need a good glue joint.

roach_nike-hercules_transitionWith t' lower tank assembly completed, matey, it's time t' move on to shapin' o' t' transition. Arrr! Begad! T' transition on this rocket is a real work o' art, ya bilge rat, very carefully machined. Avast, me proud beauty! Nay only does it exhibit complex geometry externally but it is also drilled for t' 4-motor cluster and upper stage boattail. It is turned oversized though, arrr, shiver me timbers, so needs t' be sanded down a good bit t' conform t' t' tanks. After shapin' it, it's a good idea t' sand t' insides a bit as they are pretty rough plus coat everythin' with a good layer o' wood glue or epoxy t' prevent ejection charges from burnin' through t' balsa.

On me kit, I wound up spendin' a bunch o' time treatin' t' wood grain and sandin' down t' a nice smooth finish before I realized that t' transition was machined wrong and a bit too tall. Avast, me proud beauty! With t' contest deadline looming, matey, I sent a panicked note t' Sandman (aka Gordon Agnello o' Roachwerks), arrr, who assured me I'd have a replacement in a few days. A few days? T' contest was 3 days away and I needed at least 1 very long evenin' t' shape, surface prep, arrr, me hearties, prime and paint. Blimey! Around 11:00 PM I sent him a request t' expedite and started lookin' over me collection for a plan B t' enter in the contest. Arrr! T' next mornin' before headin' out t' work, me bucko, I caught an update from Sandman that he'd turned me a new transition overnight and was sendin' it out Express Mail that morning. Avast, me proud beauty! Begad! Wow! What an amazin' response t' a desperate plea for help! T' replacement arrived t' next day in beautiful shape and I had a long night o' work but got it prepped and ready in time.

roach_nike-hercules_boosterfinsT' last aspect o' booster work involved t' fins. Begad! Blimey! There are 4 rough-cut balsa fins which you need t' sand down t' sharp leadin' and trailin' edges and leave a pronounced centerline. Well, blow me down! Blimey! Ya scallywag! Blimey! There are templates t' assist with this, arrr, matey, though I wound up simply maskin' off me center line and sanding down each edge on me own. Begad! Blimey! I then used t' templates as skins. Nay only did this save me some time fillin' t' gains but I had requested a special version o' t' patterns that included rivet details. Well, ya bilge rat, blow me down! Blimey! I wound up applyin' tiny glue-dots where the pattern sheet indicated bolts for added realism.

When t' fins are finished, arrr, shiver me timbers, shiver me timbers, you can either bond them t' t' tanks or for better lookin' finish, me bucko, shiver me timbers, paint t' tanks olive drab first and paint t' fins flat white then tack t' fins on with a very thin layer o' epoxy. This avoids a painful maskin' task later.

roach_nike-hercules_boattailT' sustainer is a bit simpler. Begad! Begad! Blimey! You start with a beautiful balsa boattail, arrr, me hearties, bonded t' a BT-70 (after anchorin' a Keelhaul®©™® shock cord t' a screw eye). Well, blow me down! Blimey! Next bond a set o' 4 laser-cut basswood fins. Since t' fins span most o' t' BT-70 plus sweep down t' transition, shiver me timbers, they need t' be carefully sanded t' fit. Fortunately, matey, t' laser-cut does a very good job of gettin' them pretty close, so t' trim and fit effort be minimal. Blimey! Once t' fins are in place, attach 4 elevons t' the boattail about 1/8" aft o' t' sustainer fins. I used a steel ruler and clamps t' keep everythin' precisely aligned.

roach_nike-hercules_strakesNext, you get t' cut (8) hinge pieces and antennae from leftover basswood stock. Begad! I decided t' postpone this step until I could concentrate on doin' all t' do-dads which turned out t' be a mistake. Aye aye! Well, blow me down! Without t' hinges glued in place t' t' elevons and sustainer fin trailin' edges, matey, the elevons are barely attached t' t' boattail and prone t' breakin' off. Aye aye! I think I had t' reattched 3 elevons durin' this build.

roach_nike-hercules_noseconeThere are two more sets o' fins (technically extensions o' t' sustainer fins) that get bonded t' t' nose cone. Ya scallywag! Again, careful alignment usin' a steel ruler and clamps is advised. Arrr! Also, make sure t' mark an alignment line on t' nose cone shoulder and inside o' t' BT-70 for orientation later, just t' make sure t' fins are perfectly aligned throughout.

As with t' lower fins, I passed on grain fillin' t' apply skins instead which included rivet and bolt details.

roach_nike-hercules_sustainercompleteT' completed nose/sustainer assembly is then bonded t' t' transition and painted a flat white. Avast! Once t' paint has cured out, shiver me timbers, you can epoxy t' sustainer assembly t' t' booster tank assembly (assumin' it's already been painted olive drab).

There are two lead weights provided for nose weight. Ahoy! You can probably get by with just one (the Rocksim file included provides t' target CG location) but I was conservative and went with 2, shiver me timbers, which would enable other motor selections such as 4 E9's or possibly even clusterin' F12's if I want t' get really daring.

Construction is then completed by applyin' a skin/wrap t' t' lower tanks betwixt t' fins. Mine didn't quite line up perfectly, indicatin' a slight error in fin alignment. As I fumed over touchin' up and adjusting, shiver me timbers, matey, it dawned on me that this would probably have been a much better idea t' bond t' wrap FIRST, ahead o' t' fins.

There are additional optional details that can be made, matey, most notably a set o' elevon lock plates. Blimey! I had t' skip out on this in t' interest o' makin' me deadline and because they appeared t' be incredibly difficult t' make by hand compared t' t' slight benefit visually they'd offer.

roach_nike-hercules_profileFinishing:
Lookin' over t' fantastic detailin' o' bolt and rivet patterns, I decided t' go a little nuts before painting. First, me bucko, shiver me timbers, I picked up a set o' syringes and micro tips from Lee Valley Tools. Blimey! I loaded a syrin' with 10% dilluted white glue and started makin' tiny little glue-drop bolts. Next, matey, I used a 0.3mm drill bit and Dremel t' score out little recesses for t' rivets. Ya scallywag! Arrr! All told, shiver me timbers, thar are over 5000 rivets and bolts on t' finished model. Avast, me proud beauty! Begad! This little diversion wound up takin' about 5 hours one evenin' but I think t' effect was well worth it. Well, blow me down! T' model is stunnin' when viewed up close.

I also printed out copies o' most o' t' wraps and templates and cut out cardstock layers t' make hinge and brackets, me hearties, which I attached overlayin' t' pre-printed patterns on t' wraps, givin' it a 3-D finish.

Paintin' as noted, was largely done before t' final assembly. Ya scallywag! Arrr! I used Testors rattle can olive drab and Krylon semi-gloss white. Avast, me proud beauty! Once t' olive drab had dried, matey, shiver me timbers, I then applied t' Excelsior decals supplied with t' kit and used a 3-part Micro Scale series o' decal treatments. I finished up with 3 light coats o' Testor's lusterless clearcoat. This took care o' t' mismatch betwixt t' gloss finish o' t' decals and t' flat finish o' t' painted surfaces. It's goin' that extra mile or so that I think sets this apart from me typical finishes, me bucko, ya bilge rat, and t' finished model is quite impressive.

Construction Rating: 4 out o' 5

roach_nike-hercules_allenginesgoFlight:
For t' maiden flight, I went with t' recommended cluster set o' 4 D12-5's. Avast, me proud beauty! Begad! I checked t' igniters carefully, cherry-pickin' t' best I had handy. Well, blow me down! I then hooked up a 4-motor clip-whip and went t' t' pad. Blimey! I had skipped t' launch lugs in favor o' a pop lug for an even more scale-like appearance and t' pop lug fit snugly on t' rocket and then down t' 3/16 rod. Blimey! Arrr! Given t' weight o' t' rocket, ya bilge rat, I'll consider usin' rail buttons on me pop lug in t' future, me hearties, arrr, ya bilge rat, as there is a fair amount o' rod whip.

T' motors all lit immediately and t' rocket took off surprisingly quickly. Blimey! I was very impressed with t' flight, perfectly straight and nay a trace o' roll. Aye aye! It weathercocked slightly in t' 8 mph winds. Well, blow me down! T' 5 second delay be the right choice, as t' model had just arced over when I could pick out t' distinct pops o' 4 different ejection charges. I would estimate altitude t' be around 400-500 feet.

Recovery:
Sandman's wife hand sews t' nylon chutes in his kits. Begad! Blimey! This kit came with a beautiful yellow and purple X-form chute which I thought would be a fine choice given t' winds. Avast, me proud beauty! T' chute deployed perfectly though one o' t' shroud lines tore loose from t' stitches holdin' it t' t' nylon, ya bilge rat, so t' descent was agonizingly fast. Blimey! Blimey! I lucked out in that the field was soakin' wet and muddy from near flood rains t' past few days. Even though t' rocket came down fairly quickly, thar was no damage at all.

Flight Rating: 5 out o' 5

Summary:
Overall, shiver me timbers, this is a very impressive scale renderin' with exceptional quality parts. It is nay true scale (sustainer fins undersized) but could easily be modified t' get there. Ahoy! Blimey! It flies very well and is a great kit for t' craftsman.

My only "cons" are minor with t' hinges and antenna should have been included on t' laser nest rather than cut by hand from t' basswood scrap and me decals were white instead o' yellow. Avast! While thar be some evidence that there were white-lettered missiles as well as yellow-lettered missiles, matey, me bucko, me bucko, t' overwhelmin' majority o' publicly available photos shows yellow lettering, which means it is goin' t' be difficult t' provide supportin' photos when this is entered in contests.

Overall Rating: 4 out o' 5 out o' 5

Other:
I am delighted with t' performance o' t' Lee Valley Tools syringe I used for glue bolt heads. Begad! In addition t' doing a good job on that tiny detail, me bucko, I am also startin' t' use it t' apply razor thin fillets.

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