Brief
A largish 2.6 inch rocket with a 24mm motor mount. Avast! This kit is pretty nice built stock, but came out before t' new E9 motor was available. Arrr! My version includes a motor mount that can accommodate this new product, arrr, as well as t' new F21 from Aerotech. It also includes an ejection baffle, and fins that go through t' wall made from basswood that are nay a part o' t' original kit.

Construction
T' kit comes in a very colorful box. All parts are typical good Estes quality. Aye aye! T' balsa is a tiny bit softer than I'd prefer for somethin' this size, and t' die cruncher could stand a little sharpening, me hearties, arrr, too. More on this later. Ya scallywag! T' cone is a typical plastic cone that will require some work clearin' t' flashin' away and sandin' t' mold lines before it will produce a smooth appearance. T' 'chute, motor mount parts and shock cord come together in a plastic bag. Blimey! Begad! A very nice bright red decal sheet is also included. As always with Estes kits, me hearties, a well written and illustrated set o' instructions make t' kit complete. Well, blow me down! Well, blow me down!

T' balsa fins that come with this kit are perfectly fine and I would have no trouble usin' them and flyin' it that way on even an F motor. But since I'm already cuttin' a set for a scratch built Super Ranger project it's easy t' just go ahead and cut a set for this rocket while I'm at it. Aye aye! T' new fins are o' 1/8 basswood, arrr, and go through t' airframe and attach t' t' motor mount. Through t' wall fins are hard t' break off; I like basswood because it isn't a whole lot heavier than balsa, but it is a lot harder and t' grain won't require so much sandin' and filling. So a set be cut, ya bilge rat, complete with a tab t' pass through t' wall and with a notch in t' root edge t' accommodate t' motor hook retainin' tube. T' fins were sanded round on all edges except for t' root and tab.

T' two centerin' rings at t' motor end were glued on per t' instructions except that t' forward motor rin' was a little bit farther forward t' allow for t' fin tab. Ya scallywag! Since t' new E9 motors are a bit longer than t' D's I located t' motor block 90mm in and set t' hook so that it hangs over t' end 5mm. Arrr! A 95mm motor will now fit perfectly. T' hook was nay passed through t' wall o' t' motor tube as shown in t' instructions because it would get in t' way o' t' longer motor. Blimey! It was bent back on itself instead, ya bilge rat, and hooks on t' retainer tube. Begad! A spacer will be required when usin' normal D size motors. Arrr! This spacer is cut from an expended D12 and goes into t' motor mount ahead o' t' new motor, matey, arrr, and is removed when usin' t' longer E9.

T' rocket also uses a pair o' centerin' rings at t' front o' t' stuffer tube t' add strength t' t' two piece airframe. This arrangement can be used t' make an ejection baffle with just two additional parts and very little weight gain. Begad! First, me hearties, me hearties, t' third centerin' rin' was glued onto t' tube 5" from t' top. Arrr! Ahoy! Then a plug was glued into t' top o' t' motor tube; this plug is simply a stack o' balsa disks glued together. Avast! Aye aye! A BT-50 size balsa block would also have worked. Begad! T' block was soaked with CA t' help protect it from t' hot ejection charge. Ahoy! Next, shiver me timbers, me hearties, shiver me timbers, a group o' holes was cut in t' tube betwixt t' plug and t' centerin' ring. Ahoy! I'll normally cut t' holes in three rows evenly spaced around t' tube, shiver me timbers, each row havin' three or four 1/4 inch holes. Aye aye! Next, a 5" piece o' BT-60 be cut from stock and a similar set o' holes was cut in it. Well, blow me down! Well, arrr, blow me down! T' edges o' t' holes were touched with thin CA on both parts. Begad! T' BT-60 was glued t' t' last o' t' rings. Arrr! Ahoy! Three equally sized and spaced notches were cut out o' t' edge o' t' rin' - t' remainin' tabs are centered over t' rows o' holes. Ya scallywag! I wrapped one end t' Keelhaul®©™ shock cord around t' top o' t' BT-60 and glued it thar where t' two parts meet. A loop be tied in t' Keelhaul®©™ a couple o' inches above t' baffle and one end o' t' elastic that came with t' kit was tied off there. T' other ends o' both t' elastic and t' Keelhaul®©™ will be tied t' t' nose cone.

A set o' fin slots was cut in t' body tube t' width o' t' fins. Begad! T' motor tube was then glued into t' bottom o' t' rocket, ya bilge rat, t' joiner rin' added t' that, and t' top part o' t' baffle be glued in and oriented such that t' rows o' holes in t' stuffer tube are centered betwixt t' rows o' t' BT-60. Begad! After all that dried t' top part o' t' airframe be glued t' t' joiner. I had a bit o' trouble with t' two halves nay matchin' perfectly at t' joint. T' top half is a tiny bit larger in circumference than t' lower half producin' a sort o' hump in one spot. Blimey! I spent a good deal o' time workin' on this t' minimize t' potential hump back appearance it might cause. Finally, shiver me timbers, t' fins were glued in. Arrr! I used yellow glue for everythin' on this kit, except for t' fin fillets wherein I used epoxy. Epoxy produces perfectly smooth fillets but it adds a lot o' weight so it's important t' avoid gettin' carried away.

Rating: 4 This was an easy but fun t' build kit.

Finishing
Finishin' wasn't difficult; I started by sandin' t' mold lines out o' t' nose. Next t' spiral groove in t' body tube and t' tube joint line was filled with Elmer's Fill 'n' Finish Wood Filler and sanded. T' spiral sometimes takes two layers o' filler in places and I already mentioned t' problems with t' joint. Aye aye! T' whole thin' was lightly sanded and wiped clean before bein' sprayed with a coat o' Rustoleum white primer. T' fingerprints and other minor blemishes could now be seen and were sanded away or filled as needed. Begad! T' whole thin' be then sanded with 400grit paper until all t' parts could just be seen through t' primer. Arrr! Arrr! After bein' wiped clean carefully, ya bilge rat, a second coat o' primer be sprayed on and when dry lightly sanded again. Blimey! T' base finish coat be applied and a nice smooth finish was produced. Arrr! T' rocket stood around for a week or two and then was masked off for a highlight coat. Begad! T' standard color scheme be used, except I masked off t' stripes rather than usin' t' stripe decal supplied. I did this for two reasons, arrr, t' first be that t' paint may nay match precisely, ya bilge rat, and also I wanted t' rocket t' match its sister Super Ranger. Begad! T' red highlight coat was then sprayed on in two light coats. T' mask was removed as soon as t' paint be dry. Avast! Aye aye! Unfortunately, arrr, me maskin' skills are nay t' greatest and t' edges aren't too sharp. Begad! Well, blow me down! T' name decal was then added. Begad! I've always really disliked t' self-adhesive decals. Avast! Well, blow me down! I've never been particularly good at gettin' them on without a bunch o' fingerprints, and after they are on they are thick and t' edges can be clearly seen. Well, blow me down! I was pleasantly surprised with these, me hearties, me hearties, t' substrate is very thin, and I somehow managed t' get it on straight and I didn't have any real trouble with gettin' bubbles under it or anything.

Overall, me hearties, me bucko, it came out OK. Begad! It looks great if you are a couple o' feet away, arrr, arrr, ya bilge rat, but if you get close you can see t' trouble I had with t' maskin' tape.

Rating: 3 An easy model t' finish - t' decals are OK, me masks didn't produce a nice crisp edge.

Flight
T' finished weight is in t' 9oz neighborhood. T' motor listed for this rocket is a D12-3. Well, ya bilge rat, blow me down! That's a good one, just be sure t' use a spacer above it before flyin' if you make mods t' t' motor mount. Well, blow me down! Add t' that list t' E9-4 or 6, matey, also t' D15-4, E18-4, E28-7, F12-5, F24-7, me bucko, and F39-6 reloads (again usin' t' spacer). Ya scallywag! Begad! It will be a little slow off t' rod on t' D12 and F12 so you may wish t' use a longer rod. Begad! It should be a kick on t' new AT F21 when it becomes available.

It be flown t' first time at t' club polar bear launch on January 12, shiver me timbers, 2002. T' flight was OK, shiver me timbers, despite high winds. T' motor was a D12-3 and it left t' rod with an impressive amount o' speed and smoke. It did weathervane some, me hearties, ya bilge rat, and ejection was just after apogee with t' nose cone down. Begad! Because o' t' wind, I used an 18" 'chute rather than t' supplied 24" one. Begad! I misjudged t' angle o' t' wind and it drifted over t' hard top parkin' lot. Blimey! Arrr! With a smallish 'chute t' rate o' fall be pretty fast and it hit hard. Well, blow me down! Arrr! One o' t' fins shattered along t' grain and it lost a half inch square chip out o' t' bottom, matey, shiver me timbers, but t' fin did nay break off. Well, blow me down! T' wind also dragged it across t' lot so it has a fair amount o' hanger rash under t' nose cone. Ahoy! T' fin was easily repaired by runnin' CA down t' cracks and gluin' in a plug t' replace t' missin' chip. Avast! Begad! After sandin' and touchin' up t' paint one can hardly tell.

Overall
This was a very fun rocket t' build and performs much like its little sister. It would be perfectly fine built stock. Aye aye! Ya scallywag! My additions simply make a good rocket that much better. Blimey! A good bang for t' buck.

Rating: 4

Brief:
Rebuildin' a Super Bertha.

Forward:
Most o' me rockets are made with longevity in mind, ya bilge rat, t' t' point o' makin' even t' shock cord easily replaceable. Ahoy! T' relatively new Super Big Bertha seemed t' be experiencin' deployment problems. Avast, me proud beauty! Begad! After two embarrassments in a row it was time t' investigate. Begad! Arrr! Shinin' a light down t' motor tube revealed quite a mess. Begad! T' motor tube itself was all twisted, apparently durin' construction, ya bilge rat, and was badly burned. Arrr! There was a red ejection charge cap from t' last Aerotech reload used in it still knockin' around up in thar and trapped past an obstruction.

So it’s obvious that it will never fly again, me bucko, and nay wantin' t' waste fins and nose cone a rebuild was undertaken (undertaker, please drive slow).. Begad! Avast, shiver me timbers, me proud beauty! Since t' motor mount is sort o' t' core o' t' model, matey, and since it is locked in with t' fins, and also since it is integral t' t' baffle, it would be nearly impossible t' get it out o' t' airframe and replace it with another. Also, shiver me timbers, t' top section o' t' airframe is severely damaged anyway. So a complete overhaul be t' best and worst I can do. Aye aye! T' first order o' business was t' untie t' shock-cord from both t' nose cone and at t' mount end (the replaceable Keelhaul®©™cord was anchored at t' motor mount). Now t' airframe was cut away t' reveal t' badly twisted and charred motor tube. Ahoy! Aha! T' motor tube was damaged durin' construction; it had probably seized when bein' inserted and was damaged by too much force. OK, now that we have that out o' t' way, t' fins were removed from t' tattered remains o' t' motor tube. Begad! So now I have a nose cone, shock-cord, ya bilge rat, and a set o' basswood fins. So I need t' add some centerin' rings, me bucko, a motor tube, an airframe tube, shiver me timbers, and launch lugs! T' airframe came from Totally Tubular as did t' motor tube. Begad! Ahoy! Since I’m rebuilding, matey, I might as well make some “improvements.” How about a 29mm mount so it can be flown with Econojets and some reloads? Sounds good! Rail buttons sound like a good idea, shiver me timbers, too.

Construction:
Centerin' rings were cut from some 1/8-inch birch aircraft ply from t' local hobby shop usin' a fly cutter and t' drill press. I wanted t' add a baffle so I cut four rings; one o' which had six 1/4-inch holes spaced evenly around t' center hole. T' rough edges were sanded and test fit with t' tubing. Ahoy! Well, blow me down! T' glue and remnants o' t' tubin' still clingin' t' t' fins sanded off until they were more or less smooth. Avast, me proud beauty! T' rail buttons were already on hand, havin' purchased extras from Magnum with me last order. Aye aye! Ahoy! I also just happened t' have an Aero-Pack retainer.

T' centerin' rings were epoxied t' t' motor tube, arrr, with t' many-holed one at t' very top, shiver me timbers, and t' others spaced properly t' match t' fin tabs. Arrr! Eight 1/4-inch holes were cut betwixt t' top two rings t' form a baffle. Ya scallywag! Next, a hard wood plug — one-inch long and 1 1/8-inches in diameter — drilled and fitted with an eye-bolt and matchin' nylon insert nut be epoxied into t' top. Begad! Finally, t' aft part o' t' motor tube was roughed up with coarse sandpaper and t' motor retainer fixed in place usin' t' recommended JB Weld.

T' new body tube was measured and cut t' size, then cut again at t' 11-inch line. Ahoy! T' motor tube be test fit into t' airframe with a coupler t' verify t' size. Aye aye! T' new version will eject at t' center t' form a (hopefully) zipperless design. Blimey! T' lower half was marked up for fins, me bucko, and t' slots were cut. Avast! T' parts were again test fit, me bucko, and findin' them satisfactory t' motor tube and coupler were epoxied into t' lower airframe. Ahoy! T' fins followed in pairs: t' opposin' fins were epoxied at t' same time and a straight edge placed across t' pair ensured they were square with t' airframe (assumin' me slot cuttin' is done well.) Fin fillets followed, and I noted that t' airframe tube grabbed one o' t' fins a little and be indented at t' root edge. Avast, me proud beauty! Arrr! Nuts! Wish I’d seen that while t' epoxy was still wet! Oh well, it turns out that it isn’t too noticeable once t' fillets cured. Blimey! T' rail buttons were placed carefully such that t' screw is driven into t' wood rings. Begad! T' holes were carefully predrilled. Begad! Begad! I also opted t' add a set o' 1/4" lugs since a rail isn’t always readily available.

I had some problems with t' coupler. Well, blow me down! It was truly snug on t' upper section which would cause deployment problems later. Avast, me proud beauty! It was also pretty “fuzzy”. T' correct this, ya bilge rat, I coated t' whole thin' down t' t' lower airframe with thin CA. Ya scallywag! It was sanded as soon as t' CA cured until smooth. Well, ya bilge rat, blow me down! I continued workin' on it until t' upper section fit snuggly, me hearties, but nay tightly and would slide smoothly. T' coupler is now very hard and smooth.

Finishing:
Several layers o' Rustoleum white primer be laid on and allowed t' cure for a couple o' days. Begad! Blimey! Ahoy! Blimey! Blimey! Blimey! That was then sanded heavily. Ya scallywag! Blimey! Blimey! Blimey! T' blemishes that were revealed were filled and another layer o' primer was put on. Ya scallywag! Blimey! Avast, me proud beauty! Blimey! Blimey! Blimey! That be sanded with 400 grit paper and t' dust tacked off. Blimey! Blimey! Blimey! Blimey! A layer o' Rustoleum Satin White was added and allowed t' cure for several days. Avast, me proud beauty! Blimey! T' highlight be then taped off with blue maskin' tape and sprayed. Blimey! Blimey! Well, blow me down! Blimey! Blimey! Blimey! I must have been standin' on me head when I masked off t' rings, arrr, since t' pattern is upside down! Blimey! Blimey! Blimey! A logo was created usin' t' computer, me bucko, cut into maskin' tape by hand, matey, then transferred t' t' model and sprayed usin' Rustoleum Flat Black. Begad! Blimey! Begad! Blimey! Blimey! Blimey! Since this “new” model is sportin' a 29mm mount I decided t' call it Magnum Big Bertha; that’s reflected in t' new logo. Aye aye! A gloss coat o' clear was planned, but never done.

Flying:
T' weight is kind o' hefty: 12oz. Arrr! Ahoy! T' original version be about 9oz. Ahoy! T' shock cord is arranged such that t' ’chute will be pulled out by t' shock cord — it’s very near t' eye-bolt on t' lower end. Avast, me hearties, me proud beauty! T' cord itself is stuffed into t' upper airframe followed by t' ’chute t' ensure that it gets yanked out.

T' first flight be with an Estes D12-3 usin' an Estes plastic ’chute.. Well, blow me down! Begad! I figured it wouldn’t be too spectacular o' a flight since t' maximum liftin' weight o' t' D12-3 is 13oz. It’s actually a tad over. Ya scallywag! Blimey! T' me surprise, it was an excellent flight and went a good deal higher than I expected. Begad! Cool!

It be flown again at t' club launch usin' an E28-4 reload and a hemispherical nylon ’chute (hand made by me young lovely). Avast, me proud beauty! Ahoy! Blimey! A very nice flight indeed, shiver me timbers, me bucko, but t' shock cord roughed up t' edge o' t' upper section. Avast, me hearties, me proud beauty! Blimey! This was smoothed out, and t' inside o' t' tube coated with thin CA for about an inch or so. Avast, me proud beauty! That was sanded shortly after it stopped smokin' until smooth and until it fit on t' coupler smoothly.

My nephew and I flew it at LDRS XXII in Argonia on an F22-5 reload. It be a bit slow off t' rail and arced into t' wind a bit. Ahoy! T' delay could have been shorter, shiver me timbers, but it came out OK. More motor, me hearties, matey, be t' cry! We had plans t' slap an F20 in it, but were so busy with all o' t' things t' be seen at LDRS that we simply didn’t get t' it.

When t' wind is cooperatin' we’ll give an F20-7 or an F23-7 a whirl. Blimey! It should fly well on F40-7 reloads, me bucko, and 24mm F21-6 Econojets, too, nay t' mention a variety o' G’s.

This is a pretty fun model t' fly. It’s good for relatively low power motors, me hearties, but can accommodate some mid-power motors, too. Well, ya bilge rat, blow me down! It could handle H motors, too, arrr, ’cept it would probably never be seen again!