Estes Baby Bertha

Estes - Baby Bertha {Kit} (1261) [2002-]

Contributed by G. A. Dean

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar
Diameter: 1.64 inches
Length: 12.75 inches
Manufacturer: Estes
Skill Level: 1
Style: Sport

Brief:
T' Baby Bertha is a new kit (2002) based on t' venerable and popular Big Bertha kit. Ya scallywag! T' rocket has t' same large, V2-like fins and blunt, rounded nose cone as t' Big B, shiver me timbers, matey, but is 1/2 t' length at 12 inches. Aye aye! Avast, arrr, me proud beauty! Rated at "Level 1", it's an easy t' construct kit usin' traditional, matey, Estes-style methods that would make an excellent kit for a beginner, matey, or young rocketeers.

Construction:
If you have ever built an Estes Alpha or similar kit, ya bilge rat, shiver me timbers, t' Baby will give you a familiar construction experience without surprises. T' motor mount uses an engine clip and motor block t' restrain t' engine, shiver me timbers, matey, and two die-cut paper centerin' rings t' position t' mount in t' body tube. Avast, me proud beauty! Blimey! T' Baby uses Estes BT-60 body tube which at 1.6 in. Avast! Blimey! diameter is wider than most Estes rockets, so these may be larger centerin' rings than you are accustomed to. T' four balsa fins are relatively large and much easier t' align on t' tube than t' small, shiver me timbers, matey, light fins on most rockets o' this size. Arrr! Blimey! Even new builders should have a relatively easy time with these fins.

I used me favorite technique t' attach t' fins. After roughin' up t' tube with fine sandpaper I attach each fin with medium CA glue and hold it in t' perpendicular position until it sets, me hearties, which takes only 15 seconds or so. Well, blow me down! I use very little glue for this step, me hearties, just enough t' hold t' fin. Then I apply ample fillets with wood glue. Avast! Avast! Blimey! T' big fins and big tube on t' Baby Bertha makes fin attachment very easy.

T' shock cord attaches with t' usual three-fold connection t' t' body tube. Avast, me proud beauty! Blimey! As I do on all me rockets, I used a length o' Keelhaul®©™cord for t' booster-side connection and tied that t' t' elastic shock cord. Begad! Blimey! I attached a twelve in. chute t' t' cord.

T' construction "PROs" for t' Baby Bertha have t' be t' larger size o' t' components which makes things easier on an inexperienced builder. Ya scallywag! It's a great 'trainer' for balsa and paper construction techniques. No surprises or special challenges.

I can't think o' any serious construction problems or issues, me bucko, except t' almost standard Estes problem o' inadequate shock-cords. Avast! T' Baby goes together easy.

Finishing:
I used thinned Elmers Wood Filler on those big slabs o' balsa (the fins) and t' spiral seam in t' tube. Avast! I also created fillets for t' launch lug. Aye aye! Avast! This is a pretty good rockets for learnin' t' wood-filler technique. Blimey! I wanted t' duplicate t' black and white paint scheme from t' package art (actually, I had other ideas, but t' kids wanted t' package look). Ya scallywag! After two coats o' grey primer, I taped off facin' sides on t' fins (the fin patter is tough t' describe but obvious when you see t' package), shiver me timbers, me bucko, and applied two coats o' gloss black. Avast! Once that dried I removed t' maskin' tape and covered t' black areas. Avast, me proud beauty! This turned out t' be tricky as thar are several angles where paint could pass through t' t' black areas. Avast, me proud beauty! I would recommend paintin' t' white fins sides first, then mask them off and paint t' whole rocket black. Avast, me proud beauty! I also think that thar are plenty o' alternate paint schemes that would look great on this rocket. Arrr! Try some V2-style paint schemes, for example.

T' kit comes with one long decal which runs along one side. T' decal actually reaches past t' body tube onto t' nosecone. Once t' decal was placed I used a hobby knife t' cut it along t' seam betwixt t' nosecone and body.

T' white pinstripin' in t' package art is nay provided in t' kit. I used white trim tape (get it at t' hobby store), and it looks sharp (although mine is nay as 'fine' a line as t' one on t' package). Aye aye! I'm givin' some thought t' duplicatin' t' line in black on t' white fins.

T' "PRO" for finishin' be t' opportunity t' experiment a bit with design. Blimey! This rocket will look good in a variety o' schemes, ya bilge rat, so have some fun with it.

One possible "CON" would be t' large amount o' balsa t' fill if you want a real smooth finish. Arrr! I didn't find that an issue, me bucko, and I think this is a good rocket t' practice those techniques. If you're nay real concerned about fillin' all t' grain then thar be no problem at all. Well, blow me down! Begad! One could also object, I guess, arrr, t' t' relatively difficult "stock" paint scheme. Avast! and t' single decal. Well, blow me down! T' best thin' t' do is t' ignore t' package art and design your own scheme. Ya scallywag! Begad! If I were Estes I'd give t' Baby it's own, matey, fun color scheme like t' Fat Boy, arrr, rather than try t' duplicate t' current Big Bertha look.

I'm ratin' it at 4 1/2, takin' off a half point for t' shock-cord.

Construction Rating: 4 out o' 5

Flight:
We have one flight on t' Baby. Ahoy! We used a B6-4 t' launch it in light t' medium winds. Arrr! T' boost was straight, fast and t' a greater altitude that I expected. Begad! Begad! T' chute deployed close t' apogee and recovery be within 100 yards o' t' pads. Avast, me proud beauty! A nice, satisfyin' flight.This rocket is a bit heavy for A motors but does well on B's and ought t' fly t' 800+ feet on a C.

This is a great flyer for t' smaller fields we use. I expect t' have at least one Baby in our flyin' fleet at all times from now on. Aye aye! Avast! Blimey! I like t' have at least one 'old dependable' at a launch, shiver me timbers, for when curious kids come around and wish they could fly a rocket. Well, blow me down! I usually load a B6 into t' Custom Razor and hand it t' them. Aye aye! Aye aye! Blimey! It never fails t' give a great flight and is easy t' replace if lost. Blimey! I think t' Baby Bertha has t' same characteristics.

Recovery:
T' Baby is heavier than most rockets in this class and does nay seem overly prone t' drift. Avast, me proud beauty! It's sturdy enough t' use a streamer, in me opinion, ya bilge rat, if t' winds build.

T' wide body tube requires plenty o' wadding. Ya scallywag! Avast, me proud beauty! I expect that burnt chutes and fried shork-cords will be a problem with this bird. Arrr! I'm goin' t' use Keelhaul®©™waddin' for future flights (I get mine from Pratt Hobbies) and I have already mentioned t' Keelhaul®©™cord.

I'll give it a 5 for flight and recovery. We only have t' one flight on it so far, arrr, but it was a good one and t' sim results indicate that this is a good, schoolyard and small field bird.

Flight Rating: 5 out o' 5

Summary:
My first thought on completin' t' Baby was, "what took you so long, Estes?" Downsizin' t' Big Bertha seems like such a natural move, and t' result is a great addition t' t' Estes line-up. I believe that this is a great rocket for school and scout groups. Begad! Aye aye! T' construction reminds me o' t' Alpha (the old style Alpha, nay t' plastic finned Alpha III), me bucko, but its a bit more forgivin' for unsteady fingers. T' big fins and wide tube make a great 'canvas' for creative rocket decorating. Begad! Now that I have one Baby finished stock I'm goin' t' have t' kids build some more and do their own paint schemes.

T' flight profile o' t' Baby is also a bit more 'forgiving'. Begad! Sure, arrr, me hearties, t' scouts might grin when their Alphas or Wizards zoom out-of-sight, shiver me timbers, but they're nay as happy when they fail t' return. Arrr! A 'C' motor should take t' Baby t' around 800 feet, me hearties, so you get all t' noise and smoke but keep t' rocket in sight and it's more likely t' land on t' school yard. Avast, me proud beauty! Perhaps Estes can be convinced t' offer t' Baby in bulk packs.

There are many things t' Baby Bertha is not, matey, me hearties, but what it does it does very well. Avast, me proud beauty! It's a great family rocket that will give you more 'fun per dollar' than most. Ahoy! I expect t' see plenty o' Babies at launches in comin' months.

As I mentioned above, shiver me timbers, I think this is a great rocket for beginners and kids, but as you might have guessed, me hearties, shiver me timbers, even this 'old rocketeer' had some fun with it. I expect t' be flyin' me own Baby Bertha drag races in a month or so. Ya scallywag! Avast, me proud beauty! I want t' find some 'flame' decals for a cool, me hearties, 'hot rod' look, shiver me timbers, shiver me timbers, or perhaps a Tintin-like red checkerboard, arrr, matey, or perhaps both! In other words, shiver me timbers, good, matey, cheap rocketry fun. Enjoy!

Overall Rating: 5 out o' 5

Other Reviews
  • Estes Baby Bertha By Herb Estus

    A skill level 1 rocket from Estes.  Small version of the Big Bertha. BT-60 body tube-7 1/2" BT-60 elliptical nose cone-2 1/2" Engine mount tube Centering ring card Retaining ring for motor tube Engine block and hook decal sheet 12" plastic parachute shock cord Pros: Instructions are easy to follow and well illustrated. Rocket went together quick ...

Flights

Comments:

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B.E. (August 5, 2002)
I bought a Baby Bertha for my son to build as his first rocket. He loved it and couldn't have been more proud when he first took it to the pad at a club launch. He wound up flying it five times that day, completely bankrupting my supply of B6-6 engines. This is another great first rocket in a long line of them from Estes. BTW, I believe this one has been done earlier. Wasn't it once the Estes Rascal?
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K.R.E. (June 4, 2003)
The Estes Baby Bertha was a pleasant surprise. I had expected a kit that sold for less than ten dollars to have a least one flaw or two, but this kit far exceeded my expectations. Assembly was a no-brainer. If you have ever put together any other level one kits, the Baby Bertha will be no problem. The balsa was a little soft but certainly acceptable and the body and nosecone took paint very well. My daughter and I finished the kit with a gloss royal blue body tube and fins and a chrome silver nose cone. Although I liked the classic black on the package insert, the blue silver combination is a looker as well. First flight was on a B6-4. The day was gusty and not quite ideal but the Baby B did not disappoint. 500 feet, straight up. The chute deployed but gusty winds took the baby 300 yards away into a lake. (sound familiar?) Recovery was not possible and the Baby Bertha sank quickly. BUT, at its low cost and fine performance there is sure to be another in the stable in the future. Highly recommended.
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W.D. (October 15, 2003)
This rocket is now my favorite. The flight was straight up and landed 10 steps away from the pad! If you are hesitating to buy this rocket, go for it and you will have a great time.
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J.I. (December 21, 2003)
I really like this rocket. I've launched it at least a dozen times, and always have had excellent results. Nice straight flight and always a very nice chute deployment and landing. I'm not really fond of the Estes Shock cord attachment (or the shock cord for that matter), but this baby has always come through for me in any condition.
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K.W. (July 26, 2004)
I've now built about 50 of these kits with both high school and elementary school students. They are a great first kit, with large parts that are easy to align and correspondingly large glue surface area for strong construction. I find that even elementary students can assemble the kit in a three hour workshop. Flights are a little underpowered on an A8, but just right for small fields on a B6. I've seen this kit for <$5 online, so it is still a reasonable choice for groups even though there is no bulk pack available. Try it, you'll definitely like it!
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A.M. (October 4, 2004)
I built this kit stock, accept, I swapped a 24 inch chute in it. I used it for my Nartrek bronze chute duration, I got 145 seconds, only needed 60 seconds. This little rocket really rocks, and on a C6-5 will get way up there. Highly recommended for beginners, or even high power folks who just wanna have fun.
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D.S.C. (October 24, 2004)
I did a lot of research before settling on this kit for my cub scout rocket derby. I've been running these derbies annually where scouts build, launch and try to land their rockets as close as possible to a target pole. I've used Vikings, Alphas and even Mach 12s in the past but this year I've selected the Baby. The pros are the large size which makes it easy to build, easy to see and suitability for a small field with a B6 engine. I field tested one today and with an A8 engine, flies too low but just right with a B6, gaining about 300 ft altitude straight up but only 200 feet when angled 20 degrees from vertical making it perfect for this event.
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G.B. (July 9, 2006)
What's not to like about the Big Bertha's little sister? Nothing.....except that the shock cord supplied with my kit was way too short, and I should have recognized this and swapped in a longer one. The effect of the short shock cord in that the chute and nose cone snap back over the fins and tangle.
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R.W.L. (January 9, 2007)
This was my daughter's first rocket, and she loved it! She was able to do most of the construction herself (I did the cutting and tube marking), though she asked me to stick the fins on the bodytube once she had applied glue. The "apply glue and let it dry, then reapply" trick is really handy for getting the fins to stick. It's still in primer (we've got some pink spraypaint for it) but it flew beautifully -- my daughter used up a whole pack of B4-4 engines at the january SOAR launch. One flight arc'd into the wind a fair ways, but the other 2 were picture perfect!

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