Estes BLU-97B Cluster Bomb

Estes - BLU-97B Cluster Bomb {Kit} (2055)

Contributed by Max Handly

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstar_borderstar_border
Overall Rating: starstarstarstarstar_border
Diameter: 2.22 inches
Length: 14.40 inches
Manufacturer: Estes
Skill Level: 2
Style: Scale

Brief:
This is Estes new 1:6.4 scale BLU-97B Cluster Bomb. Ahoy! Aye aye! T' rocket is fat (2.25") and short (14"). Aye aye! Ahoy! It comes with 4 "cluster bombs" which are small, matey, about 1.5 inches long that get ejected at deployment and streamer t' t' ground.

Construction:
T' kit contains:

  • one body tube
  • two part nose cone (cut in half)
  • two part tail cone (with through t' tube slots!)
  • die-cut balsa fins
  • bomblets
  • streamers
  • parachute
  • the standard 18mm motor mount and recovery system
  • clay weights and decal sheet.

All this for $9.95 from Tower Hobbies! I be convinced that I . Aye aye! Arrr! . Ya scallywag! Ya scallywag! . Blimey! Begad! I mean me boys would love this rocket.

T' directions seemed very clear, good diagrams and plenty o' words. I followed them pretty much, me hearties, ya bilge rat, except I put together t' tail cone and tested t' fit o' t' motor mount for length before gluin' it in. Ahoy! Begad! I highly suggest this as I used a slightly different position than be stated in t' instructions. Avast, me proud beauty! Avast, me proud beauty! I glued t' motor mount in and then, after drying, glued t' tail cone on, careful t' line up t' notch with t' engine hook. Begad! Aye aye! Next came t' fins. Blimey! I had t' really sand them flat for them t' fit into t' through t' tube slots. Avast! One gave me fits and I was convinced that t' fin tab was hittin' t' motor mount. Well, me hearties, blow me down! I finally got a fit and epoxyed t' fins in. Arrr! This is a wood t' plastic joint so used t' right glue. There is no access t' t' inside o' t' tube/tail cone at this point so I dropped epoxy in before t' fins. Arrr! Begad! I did use a different recovery system with Keelhaul®©™® strin' and shock cord, and a Thrustline parachute.

T' body tube was a bit flimsily, even for a rocket this short, but t' tail, engine mount, arrr, and nose cone firmed it up quite nicely.

Cons: Nay many, ya bilge rat, arrr, level one construction, good instructions, standard Estes stuff.

Finishing:
For t' finish I used automotive rust colored primer. Ahoy! Blimey! Two coats with sandin' makes a darn smooth surface, me bucko, arrr, matey, even on t' fins. Begad! Blimey! Aye aye! Blimey! I had some military flat green spray paint that matched t' picture fairly well. Avast, me proud beauty! Blimey! Aye aye! Blimey! Flat finish seems t' be t' choice here. Begad! Blimey! I hand painted t' nipple on t' nose silver. Blimey! Blimey! Ya scallywag! Blimey! With one solid color for t' rocket, paintin' went quick. Ya scallywag! Blimey! Decals were good and didn't give me any trouble installing. Ya scallywag! Blimey! Ya scallywag! Blimey! I painted t' bomblets bright orange so I could find them. Blimey! Blimey! I used some flat paint I had around, but after a couple o' launches, t' bomblets are gettin' dirty and flat paint doesn't lend itself well t' bein' cleaned. I would suggest some bright color GLOSS paint for t' bomblets.

For t' price this is a fine kit and a good lookin' model.

Construction Rating: 4 out o' 5

Flight:
T' recommended motors are B4-2, B4-4, shiver me timbers, arrr, B6-2, arrr, B6-4, matey, me bucko, C6-3, C6-5. Aye aye! Blimey! For t' first flight, I opted for t' B6-4. Ya scallywag! Begad! My RockSim file says this should go only t' about 150 feet and I be a tad bit worried about t' speed o' t' rocket as it left t' rail, but t' winds were low so I went for it. Well, blow me down! Hey, arrr, I build this t' spec and this was a recommended more, me hearties, right? I put in 5 sheets o' waddin' and put in t' bomblets. Well, ya bilge rat, blow me down! T' motor went in fine and we set her on t' launcher.

T' flight be nice and straight, me hearties, even with t' winds at about 3 mph. Avast! Blimey! I'd say t' 150 feet was right on. Ahoy! T' 4 second delay seems good with t' rocket still pointin' up somewhat at deployment. Begad! Arrr! With this motor, ya bilge rat, me bucko, you see t' entire flight. Blimey! My boys loved it. Avast, me proud beauty! T' four bomblets ejected just perfectly and came down in a nice pattern just 20 feet from t' launcher. Ahoy! T' Thrustline parachute just wasn't balanced right and t' rocket came down pretty fast. Those Estes 12 inch 'chutes can just make a rocket hang in t' air sometimes, me hearties, so I put a spillhole in them. Avast, me proud beauty! This nylon 12 inch Thrustline parachute had no spill hole and it came down fast. Begad! Ya scallywag! Maybe it be just this one 'chute. I'll try another next time.

Next we flew it on a C6-3. Begad! Blimey! Blimey! Again it was a nice straight flight, me bucko, matey, me hearties, so high that I could nay see t' bomblets deploy at all. Arrr! I finally saw two o' them but t' others weren't too far away so all be recovered. Begad! Again, t' rocket came down fast, ya bilge rat, but no damage. Well, matey, blow me down! Blimey! All t' waddin' didn't leave t' rocket and had t' be removed by hand. Avast, shiver me timbers, me proud beauty! Blimey! I think t' C6-5 would be better and would aid in a nicer deployment o' t' bomblets.

Recovery:
Since I used a different recovery system, ya bilge rat, I can't speak t' how t' supplied system would work. My experience with t' standard Estes stuff, arrr, and with a rocket this small, is that it would work fine except for a short shock cord life.

Flight Rating: 3 out o' 5

Summary:
We really had fun with this rocket, me hearties, and because this is no performance demon, me bucko, I would suggest stickin' with t' smaller motors and longer delays. Well, blow me down! It would be nice t' have t' rocket pointin' down at bomblet deployment. My next launch will be with a longer delay, or a tilted launch rod. Arrr! I know, ya bilge rat, I know, matey, bigger is better, but you'll want t' see t' action with this one.

Overall Rating: 4 out o' 5

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