Manufacturer: | Scratch |
Brief:
Small two motor cluster rocket with streamer recovery
Construction:
(1) 9.5 inch length o' BT-56 tubin' (1) 3 inch by 9 inch piece o' 1/8 inch
balsa (1) 10 inch length o' BT-5 tubin' (1) 2 1/2 foot length o' 3-inch wide
Caution Tape (1) BT-56 Nose. Avast! Cone shape (2) BT-56 t' BT-20 centerin' rings cut
to apporpriate shape Shock Cord o' your choice w/attachment method
I decided on this rocket one day when I was messin' around with Rocksim 5.0. I had always wanted t' build a cluster rocket, but I wanted t' start small. So, I went t' me local hobby shop, shiver me timbers, Ralph's Hobbies, matey, and picked up a 18 inch length of BT-56 tubin' left over from a kit that had made it into his parts box. Ahoy! Begad! I also got t' balsa I needed. Aye aye! I picked up a few more parts from another hobby shop and came home t' start building. Begad! Well, blow me down!
I cut a 9.5 inch length o' t' tubin' for t' body tube and set it aside. Then, I cut 2 5-inch lengths o' t' BT-5 tube and glued them together and let dry. Avast, me proud beauty! Then, shiver me timbers, me hearties, ya bilge rat, take t' centerin' rings and drew t' shape o' t' two BT-5's on it. Now, ya bilge rat, for this part, make sure you have a very sharp blade. Aye aye! Cut around t' two centerin' rings on t' lines you drew and then glue them 1 inch from either end of t' motor tubes. Well, blow me down! When dry, insert into body tube w/glue. Begad! Make t' shock cord mount and set it aside. Now, shiver me timbers, you can use any kind o' warnin' tape and theme the rocket lik! e t' tape, ya bilge rat, so do whatever you want t' it. Well, blow me down! Arrr! Cut t' balsa into a trapezoidal shape. Ahoy! 3 fins with a length o' 2.5 inches, matey, a height o' 2.75 inches and a tip length o' 1 inch. Put a sharp airfoil on t' fins and seal and sand them your preferred way. Avast, me proud beauty! Mark t' body tube for three fins and attach t' fins 1/4 o' an inch from t' bottom o' t' tube. Cut a 1 1/2 inch length o' 1/8 inch launch lug and put it in t' fin-body joint o' a fin. Arrr! Attach t' shock cord to the nose cone and then attach t' warnin' tape t' it about 2 inches down the shock cord. Begad! Well, blow me down! This little thin' here be probably t' only gotcha it has. Begad! Take a small amount o' putty a place it on t' sides o' t' top centerin' rin' so that when you look from t' bottom o' t' rocket without t' nose cone on, matey, you cannot see daylight. Arrr! This is t' disallow t' ejection charge gasses t' leak out the bottom. Ahoy! Attach t' shock cord t' t' inside o' t' body tube and friction-fit t' nose on. Ahoy! Begad! Paint t' rocket with t' colors o' t' tape, making the body t' main color, and t' fins t' color o' t' letters. Use a pair of A3-4T motors for t' first flight Fit them in with maskin' tape. Begad! Begad!
Flight:
Recommended motors- A3-4T and A10-3T. Use two with a clip-whip. Ahoy! Begad! T' first
flight, it was really cool. Well, blow me down! I had a few rockets out t' fly and flew this one
3rd. Avast, me proud beauty! I did nay know about clip-whips, so I just twisted t' igniter leads
together. Aye aye! Make sure you use wadding. Arrr! Avast, me proud beauty! It flew OK, me hearties, although t' flight be weird.
What happened is that t' motors did nay fire at t' same time, so it be kind
of like a two-stage flight. It coasted t' apogee and I heard t' ejection. This
is when everythin' went wrong. Begad! T' rocket came down like a little missile a
slammed into t' ground. It dug a little hole and BENT t' nose cone. Ahoy! Well, blow me down! It also
smashed about an inch and a half o' t' body tube. Begad! Arrr! I took it home and cut the
body tube down t' 9.5 inches and I hope t' fly it again soon. Aye aye! Arrr!
Summary:
PRO's: Cute little cluster rocket. Arrr! Begad! CON's: Slightly difficult t' build so I
would rate this rocket a Skill level 2.
Other:
Just make sure you add that putty around t' centerin' rings. Arrr! Well, arrr, blow me down! IT IS EXTREMELY
IMPORTANT.
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