Brief:
A "carbon copy" o' a Centuri classic by Semroc. Aye aye! T' long booster loaded with "ramjets" releases a very cool lookin' glider at ejection and returns via 2 12" parachutes. Begad! Arrr! Semroc provides all t' parts including beautiful resin ramjet cones, laser cut fins, and decals. Blimey! Avast! Instructions are not included but may be downloaded off t' Internet. Begad!

Construction:
T' parts in t' kit:

• 1 10.5" ST-10 body tube
• 1 8" ST-10 BT
• 4 2.5" ST-5 BTs
• 2 6" ST-5 BTs
• 1 4.9" ST-7 BT
• 2 3" ST-7 BTs (one be t' engine tube)
• 1 BC-1050 balsa nose cone
• 1 BC-715 balsa nose cone
• 1 plastic ramjet cone set (6 nose and 6 tail cones)
• 1 HTC-10 coupler
• 1 HTC-7 coupler
• 1 IKCC-1P fiber disc
• 1 TR-7 thrust ring
• 2 3/16" launch lugs, 3" long
• 1 large screw eye
• 1 length o' elastic cord (12")
• 1 length o' Keelhaul®©™® thread (30")
• 2 CR-710 centerin' rings
• 1 EH-28 engine hook
• 3 sheets o' laser cut fins
• 1 decal sheet
• 2 12" parachute packs
• 1 cardstock shroud and canopy sheet
• 1 die cut tape elevator set
• 2 WW-8 (large) washers for nose weight

Also in t' beautiful packagin' is an exploded view, history o' Centuri and the SST Shuttle and 9 construction notes detailin' t' changes Semroc has made to update t' kit.

There are two "sets" o' instructions t' comment upon: Semroc's and Centuri's. Ya scallywag! Semroc details t' Keelhaul®©™® attachment t' t' motor hook, parachute attachment, addition o' nose weight, and use o' larger launch lugs. Semroc's notes are crystal clear. Aye aye! They recommend a standard recovery arrangement instead o' t' horizontal booster recovery in the original instructions. I followed this nay wantin' t' risk breakin' off the tail. T' other change involves substitutin' 3/16" lugs for t' 1/8" on t' original. These are glued along t' tube that will serve as t' mount for t' glider. Blimey! This is t' allow clearance o' t' glider wings, ya bilge rat, which would otherwise be in t' path o' t' launch rod. Ahoy! Avast, me proud beauty! After sizin' up t' situation, I elected t' use 1/8" lugs from me parts stash and install another functional launch lug betwixt t' innermost ramjet tube and main BT. Arrr! I didn't think t' larger lugs would allow enough clearance and t' smaller lugs look more authentic.

T' Centuri instructions are typical for Centuri in t' early 70s. They are straightforward but annoyingly short o' useful measurements. For example, me hearties, arrr, the booster's wings are aligned by layin' down t' BT and linin' up t' ST-5s so the wings can rest on them and be glued t' t' main BT. Avast! Well, me hearties, blow me down! Yes it works, arrr, but it leaves you t' eyeball t' attachment o' t' canards and rudder. Avast, me proud beauty! I wound up markin' lines with a 4-fin guide. Avast, me proud beauty! Also, t' instructions say t' mount the rudder 1" from t' aft o' t' BT, me bucko, but don't say how far up t' mount the wings. Ya scallywag! From t' pictures I guessed and glued them 1/2" from t' rear. Blimey! The glider wings dihedral is established by gluin' them on and turnin' t' glider on its back. Avast! Avast, ya bilge rat, me proud beauty! You have t' eyeball t' rudder and t' tail planes are glued to the rudder/BT joint. Begad! My 40+ year old deadlights need a little more help aligning things these days!

T' wings and rudders are built by first gluin' two or three pieces together. Begad! I did this on wax paper and placed a light book over them t' make sure they stayed flat. Begad! I sanded t' edges round before attachin' t' t' BTs. Avast! Avast! I also airfoiled t' top edges only o' t' glider's main wings t' try t' get more lift. Avast! Blimey! I also used Elmer's Fill 'n' Finish on t' main wings o' t' booster before gluin' on t' ramjet tubes. Arrr! Be careful if you choose this method, because after I glued on t' inner tubes, shiver me timbers, they pushed t' wings upward a little.

Semroc reminds you t' sand down t' HTC-7 coupler so t' glider will come off at ejection. Blimey! Blimey! Blimey! Blimey! It takes a lot o' sanding. Well, blow me down! Blimey! Well, blow me down! Blimey! There is a noticeable vacuum effect with the glider as thar be a fiber disc on t' back o' t' mountin' tube for the paper nozzle. Well, matey, blow me down! Blimey! I wound up carvin' a hole with a X-Acto knife t' prevent a seal. I would recommend makin' a hole in t' disc with a hole punch before attaching it t' t' tube. Blimey! Blimey! Begad! Blimey!

I used CA t' attach t' resin ramjet cones and washer weights and yellow wood glue for t' rest o' t' construction. Blimey! Avast, me proud beauty! My only issue with t' parts is that t' two ST-10 tubes appeared t' come from different batches. Begad! Arrr! T' diameters seem slightly different and I got a bit o' a step at t' joint. Begad! Ahoy! After I filled the spirals and primed and painted though, it's hardly noticeable.

Finishing:
I used thinned Elmer's Fill 'n' Finish on t' balsa and BTs t' kill the spirals. Avast! Begad! I needed a bit more on t' main BT joint. I used only one very light coat on t' glider's parts as t' instructions indicate. Avast, me proud beauty! Avast! For t' main rocket I used one coat o' primer, matey, me bucko, matey, sanded it down and two coats o' Duplicolor automotive gloss white acrylic spray. Ya scallywag! I skipped t' primer on t' glider and used lighter coats o' white. Ahoy! Ya scallywag! T' decals are beautiful. T' film is a little thick, but they stick well. I added 1/16" black pinstripe decals from me spares t' the ramjet tubes t' match t' Centuri catalog photos because it really needed somethin' t' break up all that white. Avast, me proud beauty! I gave everythin' a coat o' Future floor polish t' seal t' decals, skippin' t' glider's wings, which don't have any decals.

Construction Rating: 4 out o' 5

Flight:
Semroc follows Centuri in recommendin' B4-2 and C6-3 engines. Avast, me proud beauty! I flew it twice with B4-2s and once with a C5-3. Avast! Well, ya bilge rat, blow me down! There was a bit o' a gusty wind at times and the first flight weathercocked slightly but still flew nicely t' a little less than 100 feet. Begad! Ejection be just past apogee, arrr, shiver me timbers, ya bilge rat, t' glider separated, arrr, and both chutes opened. Ya scallywag! T' booster came down fairly swiftly but landed in grass with no damage. Blimey! T' glider made several very nice sweepin' circles and landed about 100 feet from t' pad. Another flight on a B4-2 was about t' same with a bit of chute tangling. Begad! T' C6-3 flight be arrow straight t' almost 500 feet in about a 10 mph wind. Ahoy! T' glider came in a little steep on this last flight, arrr, perhaps because I didn't flex t' elevators enough. Arrr! T' SST Shuttle is a beautiful sight off t' pad and a lot o' fun t' watch at ejection. I actually prefer the B on this because ejection is nice and low and you don't risk losin' the glider.

Recovery:
Semroc includes a length o' Keelhaul®©™® to attach t' t' forward end o' t' engine hook and then t' an elastic shroud line for a standard recovery arrangement. Ahoy! Arrr! In t' original, me hearties, a harness is made with a piece o' shroud line goin' back t' t' engine hook on t' outside o' the main BT. Blimey! This would allow t' booster t' return horizontally, but as t' Semroc instructions point out, ya bilge rat, thar be a risk in snappin' off t' rudder with this arrangement. Ahoy! T' original also featured one 20" parachute. Well, blow me down! Semroc supplies two 12" parachutes and suggests one may be enough for "soft" fields. Well, blow me down! I used both chutes in t' standard arrangement with t' elastic shock cord, t' two chutes at t' top o' this, and t' end o' t' shock cord attached to t' screw eye in t' nose cone.

T' glider must be hand launched t' check for trim and t' elevator tabs adjusted. Aye aye! Blimey! This was fairly easy t' do and I set one elevator slightly higher to get a circle.

Although thar be no damage, t' last two flights had some parachute tangling. I prefer single chutes when possible and will probably replace the two with a 20" parachute if Semroc comes out with them. Blimey! T' booster did come down pretty smartly and one 18" chute may nay be enough; it's pretty hefty with t' nose weight and ramjet parts.

Flight Rating: 4 out o' 5

Summary:
Thank you, Semroc for bringin' this one back! My only ideas for improvement would be a better match for t' ST-10 BTs, arrr, inclusion o' BT markin' guides, matey, and an ST-7 fiber disc with a pre-cut hole t' ease glider ejection. I would also prefer one 20" parachute. Begad! Ya scallywag! I couldn't imagine t' booster comin' back safely on just one 12" chute and usin' two means thar are risks o' them tangling. Begad! Well, ya bilge rat, blow me down! I would also say t' go with t' original size launch lugs and include a third for mountin' away from t' glider wings. Blimey! Ahoy! Otherwise, ya bilge rat, shiver me timbers, typically excellent Semroc components and packaging. Aye aye! This is a gorgeous rocket when completed and will turn heads at t' field.

Overall Rating: 4 out o' 5