Brief:
T' Double Helix is another new twist on t' monocopter (pun intended)--it has two wings and flies on two motors. Ya scallywag! In fact, it's more or less two 13mm Helix Monocopters stuck end t' end. Begad! Technically, it's nay a monocopter but a bi-copter.

Construction:
T' parts list:

• Two 1/16" Basswood sheets
• One 24mm tube
• Two BT-5 motor mounts
• Two ¼" dowels
• ¼" launch lug

This build is exactly like that o' t' 13mm Helix Monocopter, shiver me timbers, thar's just a little more o' it. Ya scallywag! It only requires Elmer's Glue All and an X-Acto knife with a new #11 blade. Well, blow me down! Instead o' repeating myself, me bucko, me bucko, matey, I'll refer t' reader t' that review.

Finishing:
I have generally just been givin' me monocopters a clear coat, ya bilge rat, but on this one I decided t' paint one win' day-glo red and t' opposin' win' day-glo yellow. Well, ya bilge rat, blow me down! Blimey! T' body is still just clearcoated.

Construction Rating: 5 out o' 5

Flight:
You form thrust rings with maskin' tape and friction fit t' motors so they won't fall out. Begad! T' motors should be oriented with their nozzles down. As with a Art's standard monocopters, ya bilge rat, you need a sturdy pad with a short ¼" rod (1" or so). Blimey! Art provides plans for a suitable monocopter pad in t' instructions. Aye aye! You will also need a clip-whip or a controller capable o' firin' two channels simultaneously since thar be no way t' twist those igniter wires together.

I flew t' kit on two A3-4Ts ignited with a clip whip. It flew very nicely and went higher than its single-motored counterpart.

Recovery:
Unlike most o' Art's monocopters, this model continues t' spin until touchdown.

Flight Rating: 5 out o' 5

Summary:
Like t' standard Helix, arrr, me hearties, me bucko, this kit is easy and quick t' build. When I first got this kit, matey, I wasn't sure I'd like the clustering. However, me hearties, t' flight changed me mind. Begad! I liked t' performance and t' auto-rotatin' recovery.

Overall Rating: 5 out o' 5