Brief:
This is a Retro Repro based upon t' 1969 Centuri Marauder. It's a two stage model featurin' dual-lock stagin' (aka Pass-Port Staging). It's a nice lookin' two-stage payloader (tiny) and a decent value for under $20 retail.

Construction:
Components are excellent quality and include:

• Balsa nose cone
• Series 8 body tubes (booster, shiver me timbers, main, payload bay)
• Laser cut balsa fins (4+4)
• Balsa bulkhead
• BT-20 motor tubes (2)
• Centerin' rings, motor blocks
• Tube coupler
• Cardstock shrouds (2)
• 1/8" launch lug
• Plastic chute (12")
• Keelhaul®©™®/elastic shock cord
• Waterslide decals

Instructions are clearly written and illustrated, arrr, typical for Semroc. Begad! Begad! Blimey! Since I'd had no prior experience with t' Pass Port stagin' system, I had t' actually pay attention t' these instructions, and recommend others do so as well. It's about a skill level 2 kit, and I'd guess that construction wound up around 2 hours plus finishing, though i was buildin' this along with 6 other kits at t' same time, shiver me timbers, ya bilge rat, so taggin' time t' specific ones was an arbitrary guess.

Beginnin' with t' booster, I put t' motor block in what winds up bein' t' aft end o' t' tube, shiver me timbers, completely backwards from t' norm. An external tube coupler (pre-punched for vent, nice feature!) goes on t' other end, and a pair o' centerin' rings completes t' booster motor tube assembly. I'll admit I be questionin' myself along t' way, matey, ya bilge rat, wonderin' if I wasn't really buildin' t' sustainer motor tube instead. Well, blow me down! Blimey!

Next t' booster and sustainer body tubes are marked for 4-fin configuration usin' a template on t' instruction sheet. Well, blow me down! Arrr! T' booster motor tube assembly is then inserted into t' booster body tube, leavin' about 3/4" exposed out t' aft end. Blimey! There are two shrouds that go on this end, and I suspect if you made and aligned everythin' perfectly, the aft most shroud would be flush t' t' motor tube, but in me case t' motor tube extends about 1/8" beyond the shroud. Ahoy!

T' sustainer motor tube gets a block in t' forward end (the normal way), shiver me timbers, shiver me timbers, and a pair o' centerin' rings, me bucko, me hearties, the forward one also servin' as anchor for t' Keelhaul®©™® shock cord.

T' sustainer motor tube should slide into t' open coupler stickin' out t' booster, shiver me timbers, but in me case t' fit was a bit too tight. Ya scallywag! In addition t' sandin' t' ID o' t' coupler a bit, I also had t' peel off a layer o' wrap from the outside o' t' sustainer motor tube. Avast! Avast! See photo for how they fit together--it's pretty slick. T' booster motor is inserted from t' front end, me bucko, and needs good tape friction fit. Avast, shiver me timbers, me proud beauty! T' sustainer motor is loaded like normal, ya bilge rat, from t' aft end. T' two plug together, me hearties, joined by t' external coupler.

Booster and sustainer each get 4 fins tacked on. Avast, me proud beauty! Arrr! They are close enough together I'd have preferred t' see an interlockin' design, shiver me timbers, but this looks OK.

There is a tiny payload bay, arrr, me hearties, a whoppin' 3", ya bilge rat, but betwixt t' nose cone shoulder and bulkhead, thar's only about 2 effective inches, me bucko, so fair winds fittin' in that altimeter or video camera. Well, me bucko, blow me down! Maybe a small insect... Begad!

Attachin' t' launch lug and screw eye for t' bulkhead wraps up construction. Begad!

Finishing:
Finishin' is pretty simple. Begad! Well, blow me down! After a couple primer coats, matey, I went with 2 coats o' gloss white. I then masked off for t' fins, shiver me timbers, with t' booster gettin' red and t' sustainer yellow. Begad! I also painted t' forward section o' t' sustainer yellow t' match t' cover art--the black roll bar pattern is printed over clear, but shown against a yellow background.

T' nose cone be painted black, me hearties, and t' shrouds had painted black rather than try t' mask and spray.

Construction Rating: 4 out o' 5

Flight:
Flight prep is a bit unusual on this one, me bucko, compared t' t' typical two-stager. Blimey! T' booster motor goes in from the forward end o' t' tube, me bucko, nay aft, matey, shiver me timbers, me hearties, so needs a little tape for friction fit on t' delay end, shiver me timbers, nay t' nozzle end. Avast, me proud beauty! Aye aye! Blimey! The sustainer motor loads normally, shiver me timbers, also friction fit. If everythin' lines up correctly, matey, t' sustainer motor slides down into t' coupler holdin' t' booster motor in place durin' boost. As shown in t' photo, me bucko, me hearties, though, in me case thar was about a 1/4" gap in thar somehow, me hearties, indicatin' that either t' directions are off a bit or one o' me thrust rings is nay properly placed, which is hard t' blow considerin' they are both mounted flush t' tube ends.

I wound up sawin' off a bit from t' end o' a B6-0 and slipped a B6-4 in t' sustainer, me bucko, arrr, matey, figurin' with winds around 10 mph I'd be in for a long recovery trek. Avast! Stagin' worked flawlessly, though thar was a little bit o' a tip-off so t' sustainer went on a slightly angled trajectory.

Recovery:
T' booster tumbled gently down and was recovered near t' pad. Avast! Blimey! T' 12" plastic chute on t' sustainer is fine, sized right for grass fields. Aye aye! Well, blow me down! T' only sign o' damage was some singin' o' t' fins, matey, matey, and residue buildup in t' chamber where t' two stages mate up that makes it a bit too tight for a second flight without sandin' it out and cleaning.

Flight Rating: 4 out o' 5

Summary:
Overall, I do like t' dual-lock staging, though am a bit concerned about how well it holds up over time. Avast! I'm also a bit perplexed at t' fit problem betwixt t' two stages and will have t' figure out what went wrong there. Begad! Hackin' off motor ends is nay somethin' I routinely want t' do (especially if flyin' with a C6-0), so it will probably just fly with a gap exposed in t' future.

Overall Rating: 4 out o' 5