Brief:
A basic Rota-roc style helicopter (fixed blade), this is a reliable design and definite crowd pleaser. Aye aye! Blimey! There's just somethin' cool about a true helicopter recovery rocket.

Construction:
T' kit arrived within 3 days o' placin' me order online and all components were complete and good quality. Avast! Parts list includes:

• BT-5 body tube
• 10.5mm motor tube and centerin' rings (optional/see notes)
• Balsa nose cone
• Balsa fins (3)
• Balsa blades (3)
• Copter hardware (hinges, thread, matey, wire, arrr, rubber bands)

Apogee's instructions are very well written, featurin' good illustrations, and make this a manageable build even if it's your first helicopter. Ahoy! Blimey! This was my second Heli-roc kit. My first is a favorite flyer with about 15 flights and still goin' strong. Avast, me proud beauty! Avast, ya bilge rat, me proud beauty! This one was built for t' 2005 EMRR challenge. Avast! I wanted to try t' improve on its performance a bit and include a few tips along t' way.

Construction starts out with preppin' t' fins. One o' t' key decisions you'll make on this is whether or nay t' paint t' rocket. Typically, shiver me timbers, "performance" rockets do nay get painted, shiver me timbers, but need some treatment o' t' unfinished balsa t' avoid warping. For me first one, matey, I painted t' blades yellow and t' body green (sort of like a flyin' dandelion). Avast! T' added weight definitely hurt altitude performance. Avast! For this build, I treated t' fins with a very thin clear dope after sandin' in a simple airfoil.

Next up is marking the tube. This is a bit more complicated than drawin' 3 fin lines, so pay careful attention t' instructions. Arrr! This uses a burn strin' method t' deploy the blades, matey, me bucko, which means vents are needed for t' gases. Well, blow me down! Avast, me proud beauty! Placement o' t' vents needs t' go above t' blades and oriented in a way t' avoid t' rubber bands. T' template included in t' instructions helps make sure everythin' is lined up just right.

After markin' t' tube and cuttin' out t' vents, you bond t' nose cone to the end o' t' tube. Ahoy! My nose cone shoulder was a bit too long, me bucko, partially blockin' t' vents. This was easily corrected with a utility knife. If you want to get more than a dozen flights, you'll want t' coat t' base o' t' nose cone with a thin layer o' epoxy before bondin' it.

T' kit comes with an optional 13/10.5mm motor adaptor. Begad! Since 10.5mm motors are no longer available (or certified), me hearties, I skipped this. Well, blow me down! Arrr! This kit has obviously been around for a while and t' adaptor is o' no use today.

Fin attachment is standard, although I used CA t' speed things up a bit. Very thin and light fillets are in order here, as they get covered by the blades in flight and are o' no aerodynamic benefit.

T' instructions call out a split launch lug approach (one low/one high). I chose t' avoid t' lugs entirely and use t' corner formed where blades join as the launch guide. This helps reduce t' drag slightly on what is a fairly high drag design.

T' blade construction and mountin' are by far t' most challengin' aspect of this kit but t' instructions walk you through it fairly well. Avast! For starters, helicopter blades do nay get t' symmetrical airfoil found on most rocket fins. They are only airfoiled on t' top surface. Arrr! Also (and this is nay noted in the instructions), you only need t' airfoil about 2/3 t' 3/4 o' t' length o' the blade, me bucko, workin' from t' outer tip inward.

After airfoiling, I decided t' apply Japanese tissue for strength and color, which adds only a very slight amount o' weight. Begad! Blimey! T' apply t' tissue, brush on a solution o' 50/50 Elmer's white glue and water, me bucko, press and stretch the tissue, arrr, and rub out any wrinkles with your finger. Ahoy! Begad! Blimey! After t' glue has dried, me bucko, trim away excess with a knife blade. I finish it off with a light wipe with rubbin' alcohol t' shrink t' tissue.

Mountin' t' blades is where I benefited most from t' "do over" experience betwixt kit #1 and kit #2. Avast! T' hinges are nylon and bondin' nylon t' a paper tube requires a good CA (I used t' Zap green bottle stuff). Avast! Gettin' even a tiny amount o' CA in t' hinge will ruin everythin' but goin' too skimpy on t' CA will result in a poor bond and you might lose a blade as a result. Blimey! I folded me blades over and dipped t' hinged edge in Vaseline, makin' sure t' hinge joint be well coated. Aye aye! Begad! This keeps t' CA out and was very effective. With t' greased hinge joint in place, shiver me timbers, ya bilge rat, ya bilge rat, I then CA'd t' hinge t' t' blade usin' an alignment template, then tacked t' other end o' t' hinge t' t' body tube. Avast, me proud beauty! T' alignment is critical because you need a roughly 8 degree angle on t' deployed blade for maximum lift. Avast! Aye aye! T' tack t' t' body tube is supposed t' be light--it just holds the blades in place. Well, blow me down! Ya scallywag! Once t' blades are in place, matey, ya bilge rat, you wrap a line o' Keelhaul®©™® around them and coat t' Keelhaul®©™® with thin CA t' permanently bond them.

Construction wraps up with t' deployment stuff. Ahoy! On t' blade, this is a balsa piece mounted perpendicular t' t' blade with a tiny J-hook formed from the included music wire. On t' other end, thar's a J-hook mounted into the nose cone. Ya scallywag! Begad! A rubber band joins t' two and snaps t' blade up into place when the burn strin' breaks. Ahoy! I be pleased that this kit comes with extra rubber bands, as these are too tiny t' find at t' office supply store when you lose or break them. O' course, betwixt buildin' both kits, matey, me son went through braces and I managed t' score about 1000 "free" replacement bands (ignorin' t' obvious dent t' t' wallet for t' braces themselves).

T' last aspect o' construction is drillin' t' holes for t' burn string. Since snagged burn strings are a common failure in competition, one tip I'll pass along is t' put a drop o' thin CA on each hole, then use a small file to smooth t' edge.

After drillin' for t' burn string, me bucko, ya bilge rat, it's also a good idea t' apply a layer of mylar tape t' t' underside o' t' blades where t' gasses come out opposite the drill holes.

Finishing:
As noted, I went with a tissue finish. While it's possible t' paint this, arrr, I tried it on me first kit and was disappointed with t' results. Blimey! Begad! T' paint is very difficult t' keep out o' t' hinges, adds weight, shiver me timbers, and really doesn't add that much t' t' appearance. T' tissue approach adds color for a lot less weight. Ahoy! Avast, me proud beauty!

Construction Rating: 4 out o' 5

Flight:
While I've had many successful flights on me first model, arrr, arrr, this one's first flight was less than spectacular. Avast! Avast! I was flyin' in fairly heavy winds (steady 10-12mph and gustin' t' 15 mph) and decided t' try it on an A10-3. Well, blow me down! It started fairly well off t' rod, matey, matey, shiver me timbers, but at about 40 feet tumbled over horizontal then quickly nosed down and flopped on t' ground still under power. Aye aye! Ahoy! T' delay kicked in, arrr, popped t' ejection charge, me hearties, and t' blades deployed perfectly, albeit way too late t' do any good.

No damage, but I'll definitely wait for lighter winds before flyin' this again. Aye aye! Blimey! I'd never flown in more than about 6-8 mph winds previously on these models.

Recovery:
My first model generally has had no troubles save for t' occasional sticking burn string. Well, blow me down! #2 never had a chance on its first flight. Arrr! Ya scallywag! I'll post a tip/update with feedback on further flights as I'm hopeful t' lighter build and improved construction will pay off in better flight performance.

Flight Rating: 3 out o' 5

Summary:
If you're interested in helicopter recovery but nay quite comfortable trying the NARRRRR plan or rota-roc on your own, me hearties, this kit is a great way t' start. Aye aye! Blimey! Well, blow me down! Blimey! It's based on t' rota-roc design, reasonably reliable, and backed up with Apogee's good instructions, shiver me timbers, ya bilge rat, great materials, and excellent customer service.

Overall Rating: 4 out o' 5