Brief: Three fins, ya bilge rat, Three motors, me hearties, and a Nose Cone. Blimey! A very simple design

Construction:

• (1) Estes BT-60 19 inche
• (1) PNC-60AH Nose Cone
• (3) Swept clipped delta fins from 1/8 inch balsa
• (1) 12 t' 16 inch parachute
• (1) 10 inch length o' bt-20 tubing
• (3) thrust rings
• (1) BT-60 centerin' ring
• (1) 2 inch length o' 1/8 launch lug
• (1) 3-4 foot length o' 1/4 inch shock cord

Thanks t' Tim Van Milligan at Apogee Components for providin' t' BT-60 body. Arrr! Well, blow me down! T' body tube was cut t' a length o' 19 inches and set aside. Well, blow me down! T' BT-20 motor mount was cut into 3 - 3 inch pieces and then t' thrust rings glued in. They are glued together into a triangular shape. Fins were cut out into a slightly swept clipped delta and given a coat o' Elmer's Fill n Finish and then given airfoiled edges. Arrr! T' motor mounts, now dry, ya bilge rat, is glued in t' body flush with t' end o' t' tube. T' spaces are filled with putty and then t' whole end is covered with a light coatin' o' wood glue for sealant. Avast! T' tube is marked for three fins and they are glued on. Well, blow me down! Do glue fillets when dry. Well, blow me down! Blimey! Build a shock cord mount and attach t' t' interior o' t' body tube. Aye aye! Attach t' shock cord t' t' nose and t' parachute about 6 inches down t' shock cord. Avast! Blimey! Cut the launch lug into t' 1 inch pieces and attach one near t' empty CG point, arrr, about 8 inches from t' aft o' t' body tube, and t' other 2 i! nches from t' end of t' tube. Begad! No real "gotcha's" except just t' watch t' fins as they dry.

Finishing: T' rocket was given a 2 coats o' gray primer, shiver me timbers, a coat of flat white, then I masked off t' tip o' t' nose cone and 1 inch o' t' tips of t' fins. Aye aye! I then gave t' rocket a few coats o' a beautiful dark red. Arrr! Begad! The rocket is then given a gloss clear coat.

Flight: T' first flight be at a local park usin' three B6-4's. The rocket was prepped normally with waddin' and motors installed. Well, blow me down! A clip-whip was used t' ensure ignition. Aye aye! A 5-count was given. Begad! Ignition was very slow. Ahoy! The rocket lifted o' t' pad, ya bilge rat, climbed about 50 feet then fell horizontal and headed about 300 feet downrange. Aye aye! Begad! It barely slowed down before ejection. Begad! T' chute popped and rocket be recovered. Arrr! Ya scallywag! Upon inspection t' see what went wrong, we found that only two motors lit, ya bilge rat, apparently causin' t' rocket t' head downrange like it did. Well, blow me down! Well, blow me down! No damage was apparent. I believe that t' one motor did nay light because o' nay enough power, arrr, shiver me timbers, causin' only two motors t' light before t' third could.

Second flight be at t' ICBM Freedom Launch 2002. Ahoy! Aye aye! I borrowed a 16 inch nylon parachute from me Aerotech Mustang in place o' t' 12 inch plastic one. T' rocket was prepped usin' 3 B6-4's. Clip-whips were used. Arrr! T' rocket had plenty o' power this time, climbin' t' about 600 feet. Liftoff was very quick, with power translatin' out t' about a D18, I think. Avast! Avast! Ejection be just before apogee. Well, blow me down! T' rocket was recovered with no damage.

Summary: Overall, this is a great cluster rocket.