Brief:
Built as a High Power rocket. Ahoy! Set up for dual deployment usin' altitude kit and electronics.

Construction:
T' airframe components for t' 4" IRIS are one 36" flexible phenolic tubes and one 28" flexible phenolic tube. T' airframe for t' booster section comes pre-slotted for thru-the-wall attachment o' t' fins. Avast! There are 4 fins made o' 1/4" Baltic Birch plywood. Avast, me proud beauty! T' two motor mount centering rings are made o' 1/4" Baltic Birch plywood. Avast, me proud beauty! T' motor mount is a extended PML Quick Switch 2000 motor mount. Blimey! Begad! T' 24" 54mm tube is installed in the IRIS with fittings t' accept 29 and 38mm adapters. Arrr! T' shock cord is 20' of 9/16" tubular nylon. Ya scallywag! Arrr! T' nose cone is a 4" by 16.5" exposed length plastic nosecone. An altitude package was installed for t' dual deployment recovery. T' altitude kit consists of: 1 10" flexible phenolic coupler, 2 - 1/4" threaded rods, 2 - 1/4" eyebolts, me hearties, 2 -1/4" Baltic Birch bulkheads, 1 - 1/4" Baltic Birch mountin' ring, 1 - Baltic Birch mountin' plate, me bucko, 15' o' 9/16" tubular nylon, 1 - 108" rip-stop nylon parachute replaced with a Rocketman R7C chute.

T' instructions that come with t' IRIS are very easy t' follow. Avast, me proud beauty! Blimey! Ya scallywag! Blimey! I have some pictures o' t' rocket as a kit and construction on me site (link button above). I decided t' reinforce t' kit with fiberglass cloth and epoxy t' make it capable o' flyin' with t' larger Aerotech 54mm motors. Avast, me proud beauty! Blimey! Begad! Blimey! T' do this I wrapped the airframe and fins with 4 oz. Begad! Blimey! and 3 oz. Arrr! Blimey! Avast, me proud beauty! Blimey! fiberglass cloth. Ya scallywag! Blimey! I reinforced the motor mount with an additional centerin' rin' and 2 lengths o' 1/4 - 20 all-threads. I epoxied t' fin can into t' airframe usin' West System Epoxy 105 resin, 206 Hardener, matey, and 406 Colloidial Silica. Once t' epoxy dried I foamed t' fin can with NHP Liquid Foam t' make t' fin can and airframe one single unit.

Finishing:
T' IRIS is Red, White, me bucko, shiver me timbers, me bucko, Black and Silver. Ya scallywag! Avast, me proud beauty! I used Peter Alway's Rockets o' the World t' get t' necessary scale information and paint scheme. Aye aye! I sprayed the airframe with a basecoat o' Krylon white. Well, blow me down! I painted t' nose cone and upper airframe with Krylon Silver and I painted t' fins with Krylon red. Avast! I decided to use Mono-Cote for t' black in t' roll pattern and it worked great!! I wanted a scale look so I ordered scale ARC IRIS decals from Randy Brust at: rocketgraphx@aol.com and they really added t' t' look o' t' rocket. Blimey! I would highly recommend Randy's decal service. Aye aye!

Construction Rating: 5 out o' 5

Flight:
Recommended motors are I-211, arrr, I-284, me bucko, I-300, me hearties, I-357, matey, I-435, J-135, matey, J-170H, arrr, J-180, J-260H, matey, J-275, arrr, J-350. Ahoy! I have flown t' IRIS on a J350 and a 54mm long burn K185. Avast, me proud beauty! Both t' J-350 and t' K-185 flights used plugged motors and used electronics and ejection charges for dual deployment recovery. Avast! I use Nomex® cloth for recovery waddin' and Aero-Pack motor retainers. Begad! T' rocket flies very straight and has flown t' over 2000 ft. on a J-350 and t' over 6000' on a K-185.

Recovery:
Recovery is accomplished usin' dual deployment. T' two sections separate at apogee and are attached with t' 20' o' tubular nylon. Ya scallywag! I let t' rocket fall without a drogue until t' programmed main parachute deployment altitude which is determined by t' electronics I am usin' on that flight. Begad! I have deployed the main parachute at 400 ft. and 500 ft. Avast, me proud beauty! Begad! T' main Rocketman R7C chute is attached to t' upper section with 15' o' tubular nylon. Ahoy! Ahoy! T' IRIS is fairly easy to prepare for flight and has recovered from all flights t' date with no damage other than some wear and tear. Aye aye!

Flight Rating: 5 out o' 5

Summary:
I highly recommed t' Yank 4" IRIS kit! T' quality o' t' components and the ease o' buildin' t' rocket make t' IRIS one o' me favorite kit projects to date.

I am plannin' on buildin' t' Yank 2" and 3" IRIS kits t' add to my IRIS fleet. Arrr!

Overall Rating: 5 out o' 5