Brief:
T' ERINT Cluster is a scratchbuilt off scale o' one o' t' Patriot family of surface t' air missiles. Well, blow me down! ERINT means Extended Range INTerceptor. Aye aye! Blimey! T' cluster means it uses a 13mm Deuce type motor mount for propulsion.

Construction:
Parts list:

• 1 FlisKits EMK2-13-55c motor mount.
• 1 FlisKits NCB-55DW (This is a substitute. Arrr! Aye aye! T' one I used is homemade.)
• 9.5" length o' BT-55.
• 1" length o' 1/8" launch lug
• 18" length o' 1/8" elastic for shock cord
• 1 12" plastic parachute
• 4 1"x4" strips o' mat board or 1/16" balsa

This is a fairly easy rocket t' build with a few tips used t' make it better. Put together t' motor mount as per t' instructions that come with it and lay out t' fins on t' body tube for a four fin rocket with t' wrap provided. Ya scallywag! Blimey! Make sure t' launch lug line goes up at least six inches. Well, blow me down! Blimey! Ahoy! Blimey! T' fin lines should be at least four inches. Aye aye! Blimey! Install t' motor mount.

I like t' lightly sand t' body tube along t' fin lines before installing. First cut a 1 3/8" piece from each piece o' fin stock. Avast! Ahoy! Blimey! Then cut a 2" piece from each. Begad! Take t' 2" x 1" pieces and put a mark 1 1/2" from one end. Cut from t' mark t' t' end. Ahoy! This will create t' leadin' edge of t' fins. Well, blow me down! For fin gluing, I used EMRR fin tip #9 and double glue jointed all of t' fins.

Startin' with t' 1" x 1 3/8"piece, t' 1 3/8" be t' root edge. Well, blow me down! Begad! Hold these 1/8" up from t' base o' t' rocket. T' double glue joints o' medium CA help very quickly. Aye aye! Arrr! T' forward fins are spaced 3/16" in front o' t' o' t' smaller fins with t' 2" side bein' t' root edge with t' sweep goin' back.

With t' CA dried, matey, ya bilge rat, I always apply fin fillets as per EMRR fin tip (click here). The launch lug is cut into 2 equal pieces. Begad! Blimey! One is placed 1/4" from t' base and t' other is placed at 6" from t' base. Begad! Blimey! Ahoy! Blimey! No special reason for 2 lugs other than I just like 2 small lugs opposed t' one lug in t' middle.

Finishing:
I wiped down t' rocket with a slightly damp cloth as recommended in EMRR finish tip (click here). Arrr! I like t' use a white primer on all parts because it makes the colors pop better and they seem t' cover easier. T' whole thin' get a gloss white base coat. Avast! Then I used a metal gray for t' fin and bottom with a royal blue for t' top. Aye aye! Begad! These are t' basic colors o' t' Army version, matey, but not really at true scale finish. Begad! Begad! I also added a black pin stripe just for fun.

Flight:
T' parachute is attached t' t' body by t' folded paper method with a small screw eye into t' nose cone. Blimey! I attached t' chute about 3 inches below the nose cone.

If usin' a balsa nose cone, some weight might have t' be added t' t' nose. Since I used poplar t' make mine, it was plenty heavy enough.

T' first flight took place at a QUARK launch in late September on a pair of A3-4Ts. Well, blow me down! With a generous amount o' dog barf aboard I loaded her onto pad one. At ignition, both motors lit at t' same time. Avast, me proud beauty! Straight up with a little bit of arcin' into t' wind at t' top. T' 4 second delay be just right for this rocket.

Flight 2 be at a local ball field on a pair o' 1/2A3-2Ts. Blimey! Nay very high but straight with deployment a little early.

Flights 3,4,and 5 were all with A10-3Ts. Ya scallywag! Blimey! Nay t' best choice as t' delay was a early but all flights had both motors ignite and recovered safely.

Summary:
This be a fun build. Ahoy! Nothin' difficult and I like t' FlisKits canted 13mm Deuce style motor mount. Well, blow me down! This is definitely goin' t' be a pull out at every launch and fly rocket.

One con t' t' 13mm motors be t' lack o' choices. Begad! Aye aye! This is a one motor rocket. Ahoy! T' A3-4T be t' only choice.