Brief:
This be t' Estes BT-80 sized V2 that be recently re-issued. Avast! Begad! It is a 1/25 scale model o' a production V2. Ahoy! It has significantly over-sized fins for stability purposes, me bucko, arrr, and a minimal amount o' scale detail. Well, blow me down! It flies on a 24mm motor, recommended t' be a D12-5, matey, although most will look for more power.

Construction:
T' components are typical Estes, ya bilge rat, me bucko, which is largely pretty good. Arrr! T' body tube is a standard BT-80. Ahoy! T' nose and tail cones are rotational molded plastic. This is done reasonably well with visible, but acceptable, mold lines. T' tail cone has a significant discontinuity ridge near t' tenon and also is nay entirely fair, ya bilge rat, showin' a significant concavity right near t' fin leadin' edge. Avast! Ahoy! T' nose cone is nay really very accurate, arrr, bein' a bit too short and has a rounded tip. Avast, me proud beauty! T' round I chose t' model be White Sands round #56 which had a pointy nose, ya bilge rat, as do most.

T' shock cord attachment is a molded plastic loop, shiver me timbers, which as you will see later, was nay t' brightest thin' in t' world. Ya scallywag! Blimey! T' recovery system is also typical Estes, with a plastic parachute. Begad! Blimey! T' shock cord be t' usual absurd 1/8" short elastic cord, matey, me bucko, which lasted about 2 seconds after I opened t' package. I replaced this with 3/8" sewin' elastic, shiver me timbers, 3 feet long.

T' fins are die-cut balsa. T' wood in me kit be typical "rocket wood"- about 15 lb/cu ft c-grain. Ya scallywag! Blimey! This was satisfactory and I used it, me bucko, matey, but t' model could be lightened significantly with lighter wood. T' centerin' rings and motor mount are also t' usual Estes components, ya bilge rat, with fiber centerin' rings and a BT-50 motor mount. These might seem a little minimal for somethin' that's likely t' get E's and low F's, me bucko, but t' fins go through he tail cone all t' way t' t' motor mount tube, and t' whole assembly is very well braced even stock.

T' decals are typical water transfer types (in mine, me hearties, me bucko, at least). Blimey! They are minimal but appropriate for a production model.

T' kit is fairly easy t' build. Arrr! It's pretty standard except for t' tail cone/fin/motor mount assembly. Well, blow me down! T' slots for t' fins are molded into t' tail cone but nay cut through. Aye aye! Cuttin' through this is a tricky operation. Begad! If you just cut it off flush t' slot would be far too wide. Ahoy! This is a problem if you do nay plan t' add large fillets. I started out cuttin' t' top o' t' molded fin slots just far enough down t' get through, and then spent about 2 hours with a file widenin' them t' just 1/8" for t' fin. You have t' very careful doin' this t' avoid gettin' t' fins on crooked later. Ya scallywag! Avast, me proud beauty! In retrospect, shiver me timbers, ya bilge rat, I would probably make a jig for this operation. Begad! Once this tricky operation is done, ya bilge rat, matey, arrr, then t' TTW tabs on t' fin have t' be very carefully fitted t' just touch t' motor mount tube. They are all longer than necessary, me bucko, and they need t' be sanded very carefully down t' get t' root edge that bears on t' tail cone just touching. Aye aye! Avast, me proud beauty! It's nay too hard t' do, but it's a little fussy. Don't take off too much! Both o' these operations are critical t' get a good fin/tail cone fit. Aye aye! T' good news is that once it all fits together, its pretty darn sturdy, ya bilge rat, even without fillets.

T' rest o' t' construction is pretty straight-forward. I did a little extra detailin' o' t' fins and engine area on me model. Well, blow me down! Aye aye! I looked at a bunch o' pictures from Rockets o' t' World and other sources t' get a good visualization o' t' fin shape, me bucko, matey, and sanded this in. Arrr! T' fins are pointed on all edges, and expand t' full width in about 1/4" on this sized model. Ahoy! I also added 1/64 ply shrouds at t' base o' each fin t' support t' end o' t' fillets. Aye aye! This be t' area where t' jet vanes go into t' base o' t' fins. Arrr! I suggest studyin' t' pictures very carefully in this area t' get an idea how this looks.

Another thin' I did was t' cut t' aerodynamic surfaces loose from t' fins, finished these separately, then glued them back on. This gives a good representation o' their function. I also added t' control push-rod fairings. I made these out o' 3/32 basswood.

An additional modification I made was t' make a conical nose tip from .010 styrene sheet, ya bilge rat, and glued it t' t' tip o' t' nose. Begad! Blimey! This gives it t' desired point, me hearties, but is weak enough t' deform if it hits someone. Also on t' nose, I scribed t' hatch outlines into t' plastic with a bare metal foil scribe. Begad! Blimey! This was specific t' me particular round.

Finishing:
Finishin' was pretty simple. I used Squadron White putty t' finish gettin' rid o' t' mold lines and t' tail cone joint. One thin' pretty lackin' on t' kit be t' prominent fillets at t' fin/body joint. Blimey! Leavin' this off would make it very "model-like". Avast, me proud beauty! Examination o' t' photos indicates that this fillet is sort o' conical, arrr, which a very tight radius at t' LE and pretty wide at t' TE. Avast! Ahoy! This precludes usin' a tool t' make it. Well, shiver me timbers, blow me down! I used AeroPoxy Light filletin' epoxy t' make t' fillets. I put down t' blockin' tape in a rough triangular footprint t' try t' get t' conical look. Avast, me proud beauty! Begad! Then I applied t' material, and just eye-balled t' cross section while shapin' with me finger and a bunch o' water. Ahoy! Well, blow me down! It's sort o' like clay sculpturing. T' fillet ends at t' tail on t' 1/64 ply inserts I added. Avast! Ahoy! Do them one at a time and it can be done. Avast! Avast! A little sandin' when hard t' fair them in t' t' fins/tail cone and it comes out pretty good.

I used K&B UltraPoxy primer over t' whole model, which sealed everythin' up well, matey, and filled t' last o' t' little pits left here and there. T' round I was modelin' be mostly white with a black roll pattern, matey, and some bare metal details. Begad! Blimey! Arrr! Blimey! I painted t' whole model white with K&B SuperPoxy. Ahoy! Blimey! Ya scallywag! Blimey! I then masked off for t' fins and shot them with SuperPoxy black. Arrr! Blimey! I did t' roll pattern in 3 separate maskings - top and bottom rings first, arrr, me bucko, then t' diagonal lines tilted t' t' left second, and t' diagonal lines tilts t' t' right third. You could do it all at once, but then t' tape overlaps might be a problem. Blimey! Blimey! Avast! Blimey! I used 3M fine line green tape for all masking.

For t' bare metal nose, I sprayed SNJ Spray metal with me airbrush. Begad! This works great and is pretty durable compared t' some o' t' other metal paint. Avast! For t' bare metal around t' hatch, I used Testors aluminum paint in a #1 Rapidograph pen. Nay surprisingly, this got clogged up a bunch o' times, and be a real pain. Aye aye! Begad! But I can't think o' a lot o' better ways t' get such a fine line. Ahoy! Panel lines were done with Rapidograph pens usin' black ink over t' white sections. Begad! Ya scallywag! I started out with white ink for t' black sections, but this skipped so badly and be so fragile t' handle that I mixed up some medium gray usin' a combination o' white and black. Ya scallywag! This was a little better, and be a little more subtle.

I clear-coated t' whole model with PPG DAU75 automotive acrylic urethane with DXR80 hardener. This stuff goes on so easy it almost makes is worth t' exorbitant price. Avast! Almost. Ya scallywag! Arrr! It makes it very shiny, which isn't all that accurate, but it looks cool.

To finish off, I made some antennas out o' .014 stainless wire (left over model airplane control lines...), and glued them t' t' fin tips. Well, blow me down! These are surprisingly tough, they get twanged all t' time but they usually sprin' back.

Construction Rating: 3 out o' 5

Flight:
T' recommended motor for this model be t' D12-5. Aye aye! Since I have a bunch o' 24mm RMS reloads, me hearties, I haven't tried it with t' D12. Begad! I have flown it on t' E28-4 (really 2) and it moves out quickly, and ejects at about 200 mph. Well, blow me down! Well, blow me down! After that I replaced t' shredded plastic parachute with an Estes nylon 18" chute. Aye aye! T' D15-4 works well, and has a nice high-enough flight. Ya scallywag! T' E15-4 SU also works well, me hearties, and gets it very high! T' 18" chute is plenty big enough, shiver me timbers, and it drifts pretty good. Ahoy! T' only damage I've had was from some kids findin' and throwin' it back and forth like a javelin into a gravel pile.

Recovery:
As mentioned earlier, t' stock shock cord is laughable and be replaced. Avast! Avast! T' 3/8 elastic seems t' be plenty good. Avast! Avast! T' stock chute is also OK if you avoid off-apogee ejection. Well, blow me down! This model also takes a lot o' waddin' and this leaves relatively little room for chute packing. Arrr! T' nose cone loop broke on t' first flight. Begad! Ya scallywag! I replaced this with some .018 stranded SS cable threaded through some holes I drilled in t' base o' t' nose cone. Arrr! This seems t' be holdin' OK. Ahoy! A potentially better way t' go would be t' glue a 1/8 ply bulkhead into t' base o' t' nose cone. Begad! It needs some nose weight anyway.

Flight Rating: 4 out o' 5

Summary:
All in all, a pretty good sport scale model as it comes, arrr, with t' basis for a decent precision scale model with some modifications and cuttin' down t' fins t' scale size. Begad! Pros - flight performance, me hearties, matey, reasonable size, arrr, and price. Arrr! Cons - tricky fin attachment, inadequate shock cord, lack o' fin details.

Overall Rating: 3 out o' 5