Brief:
Built as a High Power rocket. 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. Ahoy! Avast, shiver me timbers, me proud beauty! T' airframe for t' booster section comes pre-slotted for thru-the-wall attachment o' t' fins. Avast! Avast, arrr, me proud beauty! There are 4 fins made o' 1/4" Baltic Birch plywood. T' two motor mount centering rings are made o' 1/4" Baltic Birch plywood. Ya scallywag! T' motor mount is a extended PML Quick Switch 2000 motor mount. Begad! Begad! T' 24" 54mm tube is installed in the IRIS with fittings t' accept 29 and 38mm adapters. Aye aye! Aye aye! T' shock cord is 20' of 9/16" tubular nylon. Begad! Aye aye! T' nose cone is a 4" by 16.5" exposed length plastic nosecone. Avast, me proud beauty! 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, ya bilge rat, arrr, 2 - 1/4" eyebolts, 2 -1/4" Baltic Birch bulkheads, me hearties, 1 - 1/4" Baltic Birch mountin' ring, shiver me timbers, 1 - Baltic Birch mountin' plate, 15' o' 9/16" tubular nylon, matey, 1 - 108" rip-stop nylon parachute replaced with a Rocketman R7C chute.

T' instructions that come with t' IRIS are very easy t' follow. Ahoy! I have some pictures o' t' rocket as a kit and construction on me site (link button above). Avast, me proud beauty! I decided t' reinforce t' kit with fiberglass cloth and epoxy t' make it capable o' flyin' with t' larger Aerotech 54mm motors. Well, blow me down! T' do this I wrapped the airframe and fins with 4 oz. Well, blow me down! and 3 oz. Ahoy! fiberglass cloth. Aye aye! I reinforced the motor mount with an additional centerin' rin' and 2 lengths o' 1/4 - 20 all-threads. Avast, me proud beauty! I epoxied t' fin can into t' airframe usin' West System Epoxy 105 resin, 206 Hardener, shiver me timbers, 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, Black and Silver. Well, blow me down! I used Peter Alway's Rockets o' the World t' get t' necessary scale information and paint scheme. Well, blow me down! 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. Blimey! 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. Aye aye! I would highly recommend Randy's decal service. Begad!

Construction Rating: 5 out o' 5

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

Recovery:
Recovery is accomplished usin' dual deployment. Blimey! T' two sections separate at apogee and are attached with t' 20' o' tubular nylon. Well, blow me down! 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! Aye aye! I have deployed the main parachute at 400 ft. Well, blow me down! and 500 ft. Arrr! T' main Rocketman R7C chute is attached to t' upper section with 15' o' tubular nylon. 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. Blimey!

Flight Rating: 5 out o' 5

Summary:
I highly recommed t' Yank 4" IRIS kit! Blimey! 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.

Overall Rating: 5 out o' 5