Brief:
This is a single stage rocket with two outer tube-fins attached via pylons.There are two standard fins t' give it a Lear jet like look.I couldn't resist buildin' it. Avast, me proud beauty! This is one o' Estes better designs.

Construction:
I decided t' go 24mm. Begad! Blimey! Most o' t' parts are available through Semroc I started with a one BNC-55AO 5-inch elliptical nose cone, me bucko, one 18-inch BT-55 body tube (I used a spare piece I had it was 17 inches long), arrr, arrr, two 3-inch long BT-55, two 55-50 centerin' rings, one 4.5-inch BT-50 (no engine block allows you t' use D or E engines), ya bilge rat, one 1oz round fishing weight, me hearties, one #204 screw eye from Home Depot, shiver me timbers, ya bilge rat, 36 inches o' #400 Keelhaul®©™® shock cord, one 12-inch nylon parachute, sheet o' 3/32-inch basswood (from Semroc or Hobby Lobby), arrr, and 24 inches o' 1/8 inch nylon cord.

First t' motor mount build. Aye aye! I used Probond wood glue. Begad! Begad! Then I marked t' body tube for four fins. Avast, arrr, me proud beauty! Next, I cut out my upper and lower fins since I was upscalin' I had t' kind o' add a little bit here and thar t' make it look OK. Ahoy! I rounded all me leadin' edges. Well, blow me down! Then I cut me pylons for me tube fins. Arrr! Basically I just took a 1-inch wide piece of 3/32-inch basswood and cut a angle at both ends t' keep things simple. Avast, me proud beauty! Begad! I attached t' upper and lower fins startin' at the tail end o' t' body tube. I attached t' pylons 2 inches from t' back o' t' body tube. Avast, me proud beauty! Now it was time t' fix the nose cone and add nose weight. Aye aye! Well, blow me down! I just drilled out t' center o' t' weight for t' screw eye, me hearties, which is about a 1/4 inch in diameter. Well, blow me down! Begad! Next, shiver me timbers, I inserted t' screw eye through t' weight, ya bilge rat, put a little glue on it, ya bilge rat, ya bilge rat, shiver me timbers, and screwed into t' nose cone. I attached t' shock through t' body just above t' motor mount by usin' a X-Acto cutlass t' bore me a little hole large enough for t' cord then put a knot at t' end with a little glue t' attach nylon cord t' other end t' nose cone. For t' tube fins, I drew a line top t' bottom on both tubes, shiver me timbers, put a little glue on t' mark and t' pylon, ya bilge rat, let it set for about 5 or 6 minutes, and then attach t' tubes, arrr, me bucko, arrr, let them dry then fillet everything. I coated all me wood area with wood glue for strength followed by a great wood filler, then sanded and painted.

Flight:
I test flew on a C11-3. It was a great flight. Next it flew on a D12-5 then a E9-6. Again, shiver me timbers, they were both beautiful flights. Ya scallywag! Ahoy! Also, me hearties, I used maskin' tape t' secure t' motor on all three flights. Well, blow me down! It flew very straight.

Summary:
I like this rocket because it was so easy t' build, me hearties, me bucko, flies great, and it has a cool look about it.