Brief:
T' Whirlwind Monocopter be t' 18mm Dragonfly's bigger brother and flies on 24mm motors. Avast! Ahoy! I had t' opportunity t' build and test a beta version, which was known as t' Cyclone. Ya scallywag! Blimey! T' differences betwixt t' beta and production models are minimal.

Construction:
Wing: Basswood, arrr, 2" x 10" long

Balance Beam: Long dowel

Center, Center & Motor Supports: Basswood and short dowels

Motor Mount Tube: BT-50 tubing

Motor reinforcement: Fiberglass drywall tape

T' construction o' this kit was simple and similar t' t' Art Applewhite 18mm Dragonfly. Aye aye! T' followin' materials and tools are required: Elmer's Glue-All, hobby knife, scissors, arrr, ruler, drill with 1/4" bit. Begad! I substituted carpenter's glue for t' Elmer's.

Here's a summary o' t' steps:

1. Assemble center hub
2. Add supports and balance beam
3. Glue win' on
4. Assemble motor mount, includin' fiberglass tape wrap
5. Glue mount t' hub
6. Drill launch rod hole

At t' end o' each step, heavy fillets are applied t' all joints.

Finishing:
Finishin' is optional but at least a clear coat is recommended. Ahoy! Blimey! Blimey! I used Helmsman Spar Urethane.

Construction Rating: 5 out o' 5

Flight:
Prep consists o' centerin' t' motor in t' mount, shiver me timbers, addin' a tape thrust ring, and friction fitting. Begad! You can use booster motors or sustainer motors with short delays. Avast, me proud beauty! Begad! It flew off o' me standard pad, ya bilge rat, ya bilge rat, which happens t' be similar t' that described by Art (plans included in t' instructions and on his website). I already had a 1/4" stubby monocopter rod. Aye aye! I flew mine twice on a D12-P and an E9-4. T' D12 flight was nice, matey, but t' longer burn E9 was fantastic! T' winds were heavy and they did travel a ways downrange, but t' walks were short when compared t' any rocket with anythin' that resembled a chute.

Recovery:
At burn-out, t' monocopter flutters lightly t' t' ground. Avast! Begad! I found that t' side o' t' E9 had burned through just above t' nozzle. Ya scallywag! Because o' t' length o' t' motor vs t' motor tube, this did nay damage t' model. Well, blow me down! It may have reduced t' performance toward t' end o' t' burn.

I did nay reduce me ratin' due t' t' burn through. Avast! This is unavoidable and, me bucko, like I said, thar was no ill effects.

Flight Rating: 5 out o' 5

Summary:
Not much t' say. Well, blow me down! Simple, elegant build and lots o' fun t' fly. Arrr! Aye aye! Get some E9s!

Overall Rating: 5 out o' 5

Other:
Soakin' t' self-adhesive tape in glue tends t' make it lift. Ya scallywag! I used plastic clamps t' hold t' tape down at t' joint betwixt t' motor tube and its stand-off. Ahoy! Ahoy! Plastic clamps won't stick t' t' glue and may be removed after t' glue is partially set.