Brief:
T' Semroc Goliath is a 4FNC LPR that allows you t' build it with your choice o' 3 different motor mounts: 1 18mm motor, 1 24mm motor, shiver me timbers, or 3 18mm motor cluster. Well, blow me down! T' Goliath design, as explained in t' instructions, arrr, is part o' Semroc's RetroRepro line and accordin' t' t' historical information in t' instruction manual, shiver me timbers, me hearties, was originally inspired by t' Estes Ranger.

Construction:
T' kit includes t' followin' parts:

• 1 Balsa ogive nose cone (reminds me o' t' FlisKits' Deuce's Wild!)
• 1 Balsa bulkhead
• 1 6" BT-60 body tube
• 1 12" BT-60 body tube
• 4 laser cut balsa fins (3/32" thick)
• 4 laser cut centerin' rings (2 for 18mm MMT and 2 for 24mm MMT)
• 3 3" BT-20 tubes
• 1 3" BT-50 tube
• 2 12" parachute kits
• Screw eye, launch lug, matey, 4 motor blocks, me bucko, me hearties, Keelhaul®©™ thread, shiver me timbers, elastic, ya bilge rat, and 1 motor clip
• Waterslide decal
• Instruction manual

T' kit arrived from BRS Hobbies well packaged with all parts present and no damage. Avast, me proud beauty! T' front o' t' packagin' is first rate and on par with any o' t' leadin' manufacturer's kits on t' market. Blimey! T' header card is ingeniously t' front page o' t' instruction manual. Ya scallywag! T' instructions remind me o' t' classic Estes-style instructions (even down t' t' font used) containin' plenty o' illustrations and even an exploded view o' t' kit in t' center pages o' t' manual. I also thought it very cool that t' instructions contained historical background information about Semroc and t' Goliath kit.

T' build starts with markin' t' body tube for t' fins and sandin' t' fins t' be uniform (although with t' precision laser cuts, matey, thar be very little t' be done!) I also lightly sanded t' 12" BT-60 t' give t' fins somethin' t' bite into when I glued them on.

Then it is time t' make a major decision: which motor mount are you goin' t' use? I, like many folks, arrr, am a big fan o' t' Estes Big Bertha/Ranger design but I at least felt that t' Big Bertha be sometimes just underpowered...so I built mine with t' 3 18mm cluster. Ya scallywag! Blimey! Clusters rock! Blimey! No centerin' rings are needed for this configuration as t' 3 tubes fit snuggly together inside t' main BT-60 airframe. Avast, me proud beauty! Blimey! Arrr! Blimey! I did however, find it odd that only one motor hook was included, so I was left t' friction fit t' motors for use. Aye aye! Blimey! I glued t' tubes together with aliphatic resin (yellow wood glue). Well, blow me down! Blimey! A generous length o' Keelhaul®©™ thread is tied around one o' t' motor blocks and then t' 3 motor blocks are glued into place before insertin' t' entire subassembly into t' BT-60. Blimey! Blimey! T' instructions recommend usin' glue soaked tissue t' fill in t' gaps around t' motor tubes, however, arrr, I used polyurethane glue, matey, which expands as it cures nay t' mention makes t' aft end o' t' rocket solid as a rock.

One gotcha (that in fact got me) is that t' BT-20 MMT tubes are 3" long, nay t' 2.75" tubes that you normally find. Avast! T' extra tube length is compensated for with wider (3/8") motor blocks, shiver me timbers, however, ya bilge rat, matey, shiver me timbers, it still requires t' motor block be inserted 1/8" from t' end instead o' t' typical flush-with-the-end-of-the-tube mount. I didn't catch this until t' glue had already had a pretty good chance t' cure. Ya scallywag! Blimey! That left me with only 1/8" o' exposed motor t' pull t' used motors out. Begad! Aye aye! Difficult but nay impossible...

Next is attachin' t' fins. Begad! I tacked them t' t' airframe with yellow wood glue before addin' generous fillets 2 at a time. Ahoy! T' launch lug is attached t' t' rocket by lyin' in a fin fillet givin' t' rocket cleaner lines.

T' rest o' t' build goes smartly in gluin' t' bulkhead into one end o' t' 6" BT-60 tube, ya bilge rat, screwin' t' screw eye into t' bulkhead, me hearties, and friction fittin' t' nose cone into place. Well, blow me down! Ahoy! I waited until after I finished t' rocket before assemblin' t' parachutes and attachin' t' shock cords.

Finishing:
Nothin' unusual here. Apply diluted Elmer's Fill 'n' Finish t' all balsa pieces. Begad! Sand. Prime with Krylon. Blimey! Sand. Avast! Paint Krylon gloss white. Avast! Let dry. Wet sand. Arrr! More gloss white. Avast, me proud beauty! Let dry. Well, blow me down! T' paint scheme on t' packagin' had a black nose cone, white BT, ya bilge rat, and blue fins but I wanted t' use colors that complimented t' large decal. Arrr! So I painted t' nose cone Krylon red followed by tapin' off t' body tube and painted t' fins Krylon green. Let dry. Arrr! Apply single, matey, large waterslide decal. Well, matey, blow me down! Done. Arrr! Let's go flying!

Construction Rating: 4 out o' 5

Flight:
Recommended motors for t' 3 18mm cluster configuration is 3 C6-7s. Begad! It's also worth mentionin' that Semroc includes projected altitudes with each MMT configuration. Avast, me proud beauty! Avast! T' 3 C6 motors should put t' Goliath up t' 1350ft! Pluggin' t' design into RockSim, arrr, I wanted t' see how it'd do with 3 B4-4s, me hearties, plus I wanted t' make certain that I wasn't goin' t' have any instability issues. RockSim showed that I should expect about 800ft with 3 B4-4s (although ejection might be just a hair early) and when built stock, t' design is still plenty stable with 3 C6-7s loaded. Ahoy! Excellent!

First flight was on a trio o' B4-4s. Begad! Blimey! Aye aye! Blimey! Even with these motors, t' Goliath didn't waste any time in gettin' going! Blimey! Straight flight t' ~750ft. Ya scallywag! Blimey! Ejection be just a hair early but could clearly hear t' "pop-pop-pop" o' t' ejection charges! Blimey! T' motor exhaust did peel most o' t' paint off t' first inch or so on t' "inside" edge o' t' fins. If you want a small field cluster, this be t' right motor-rocket combo.

Second flight was a week after t' first flight but with 3 B6-4s. Begad! I did brin' a pack o' C6-7s too but I thought it be a bit too windy t' attempt a flight with them. Begad! Again, t' Goliath didn't waste any time on t' pad after pressin' t' ignition button. Begad! With a 3 x 18mm cluster, you can forget about any images o' a majestic liftoff that'd you'd see when t' same rocket is powered by only a single motor...

Recovery:
I wasn't overly crazy about havin' a 3oz rocket recover separately under a pair o' 12" chutes at least on its first flight. Begad! Begad! Blimey! Besides, ya bilge rat, me hearties, thar was a steady but slight breeze and I didn't feel like chasin' rockets all over t' field. Ahoy! Blimey! I typically fly at soft, shiver me timbers, grassy locations so I can usually afford a quick recovery, however, I felt it best that I still make t' recovery system as flexible as possible in case I want t' use either one or two chutes in t' future. Well, blow me down! Aye aye! Blimey! This conversion was very easy t' do--I merely added swivels t' each o' t' chutes and tied small loops in t' end o' t' elastic attached t' both t' main airframe and payload sections. Aye aye! If I want t' use one chute, me bucko, I hook both elastic loops with t' single swivel, effectively makin' for a very long shock cord. Well, blow me down! Blimey! And if I want both chutes, I can clip a chute t' each piece o' elastic allowin' t' upper and lower parts recover separately. Well, blow me down! Avast! Blimey! Goin' with t' one chute configuration, it did come down smartly as expected under one chute, arrr, however, thar was no damage.

I really wanted t' give t' dual chute recovery a chance so I cut spill holes in both chutes t' help minimize drift for its second flight. However, matey, with t' 8-10mph winds, ya bilge rat, again I was nay in t' mood t' go chasin' rockets all over t' field. Begad! This time I swapped out t' stock chutes for a 15" nylon one from me range box. Ahoy! With t' B6-4s, ejection was one t' early side although nay by much. Begad! I would recommend usin' B6-6s in t' future though. Avast! Recovery went smoothly and safely but drifted quite a ways from t' pad.

On a calm day in t' future, matey, I will keep those C6-7s and t' twin stock chutes for t' designed recovery method.

Flight Rating: 4 out o' 5

Summary:
I have always been fond o' t' Big Bertha stylin' but felt that it sometimes needed a little more oomph than a single 18mm motor. Aye aye! With t' Semroc Goliath, I really enjoyed bein' able t' have t' choice o' which motor mount configuration at t' time o' t' build and without t' hassle o' havin' t' request anythin' at t' time I placed me order. Begad! T' combination o' t' old school design mixed with all t' modern LPR components and techniques made this a super rocket t' build and fly. Aye aye! Arrr! I would strongly recommend t' serious LPR builder consider pickin' up this kit.

Overall Rating: 4 out o' 5