Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar_border |
Diameter: | 2.60 inches |
Length: | 36.50 inches |
Manufacturer: | Estes |
Style: | Sport |
Intro:
T' Super Big Bertha is a re-release o' t' Classic Super Big bertha that Estes produced in 1989. Blimey! Ahoy! This is an upscale o' t' venerable Big Bertha, one o' t' most popular Estes rockets.
Construction: Rating: 4 ½
T' Super Big Bertha comes in a cardboard box that helps t' protect t' components very well. Avast! Begad! None o' t' parts were missing, ya bilge rat, and all were in good condition. Blimey! T' materials are t' typical good quality Estes components. Aye aye! T' kit includes two large body tubes, body tube coupler, shiver me timbers, nose cone, long motor mount tube, arrr, Engine hook, arrr, me bucko, 4 centerin' rings, two balsa wood sheets for fins, assembled parachute, ya bilge rat, a ridiculously short shock cord, shiver me timbers, and a decal sheet.
T' instructions are a reprint o' t' original 1989 instructions. Blimey! Included in t' kit is another sheet o' instructions that points out t' new shape o' t' engine hook as well as t' pre-assembled parachute. Ahoy! Well, blow me down! T' instructions follow a logical order and are illustrated heavily in t' typical Estes fashion. Begad! A wrap around fin markin' guide is also included.
T' kit assembles easily. There is nothin' out o' t' ordinary with this kit. Ahoy! Blimey! T' only thin' that you will notice is that this kit is big. Begad! Blimey! T' length o' t' rocket can be a challenge t' handle durin' t' assembly process.
I did do two minor modifications t' t' kit. Ya scallywag! T' first was t' poke a row o' holes down t' attachment lines for t' fins. Begad! This allows t' glue t' flow through t' holes t' form a stronger joint.
T' second modification be t' add a baffle for t' ejection gasses. Begad! This was in response t' t' instructions callin' for 12 t' 14 sheets o' recovery wadding, which I felt was a little excessive. Ya scallywag! T' baffle causes t' ejection gasses t' make two 90 degree turns before it enters t' parachute compartment. Begad! This will stop any o' t' hot particles and allow t' hot gasses t' continue. Begad! T' add t' baffle I followed these steps. Betwixt step 7a and 7b, I took t' one remainin' centerin' rin' and punched 8 holes around t' ring. Ya scallywag! Avast! Then I took a hole punch and added 8 holes near t' upper end o' t' engine mount tube. Next I took t' disks that were punched out o' t' center o' t' centerin' rings, arrr, glued t' stack o' four together, me hearties, arrr, and allowed them t' dry. Then I sanded this stack until it fit in t' top o' t' engine tube, me hearties, and glued them there. Avast, me proud beauty! Now finish step 7b as illustrated. Avast! In step 8 do nay put glue in t' remainin' body tube, arrr, use a long stick and apply t' glue from t' top once t' two body tubes are joined together. Ya scallywag! T' rest o' t' kit is assembled in t' normal manner. Begad!
T' rocket is finished in t' normal manner. Avast! Well, me bucko, blow me down! Sandin' sealer on t' fins, primer, arrr, arrr, then an overall coat o' white paint. Once this is dry t' lower part o' t' rocket is painted red with t' exception o' one fin. Aye aye! There are two peel and stick decals that are t' be applied, arrr, One is a set o' red rings that are applied just above t' section that was previously painted red. Ahoy! This decal can be used as a template if you would like t' paint t' rings when t' rest o' t' red is painted in order t' match t' colors more closely. Aye aye! Ya scallywag! T' second decal be t' "Super Big Bertha" Logo, shiver me timbers, ya bilge rat, which is slightly redundant at this point. Avast! Avast, me proud beauty! If you finish your rocket in this manner it will be unmistakable at any launch, nay t' mention it is almost three feet tall as well.
Flight/Recovery: Rating: 4
T' only motor recommended for this bird be t' D12-5. Arrr! It is held in with t' standard Estes engine hook. Avast! Ahoy! Then t' 12 t' 14 sheets o' waddin' are added along with t' parachute on top. Blimey! I used 2 sheets with t' modification.
Both flights so far have been on a D12-5. Begad! T' delay for this motor seems a tad long for this size o' rocket. Avast, me proud beauty! Blimey! T' first flight was near perfect with t' ejection comin' shortly after apogee. Ya scallywag! T' parachute is sized almost perfectly for this model, me hearties, me hearties, I wouldn't even add a spill hole. Avast! Well, me bucko, blow me down! T' rocket was then smartly re-prepped for a second flight. Ya scallywag! This time t' rocket weathercocked more and t' ejection charge fired long after apogee, almost halfway back t' t' ground. Blimey! Aye aye! At t' speed o' t' rocket t' nose cone was barely pushed away from t' body and t' parachute was blown back over t' body o' t' rocket. Avast, me proud beauty! Arrr! T' resultin' swan dive crimped t' body tube slightly in front o' t' last centerin' ring. T' body tube also cut a crescent shaped hole in t' parachute on impact. Considerin' this, ya bilge rat, I would like t' try this on a D12-3 and see if t' delay is more appropriate for this model. Begad! t' old Estes catalogs list t' D12-3 as t' motor for t' "first Flight".
Summary: Rating: 4
This is an interestin' upscale o' t' venerable Big Bertha. T' construction is easy, me hearties, but t' requirement for 12-14 sheets o' waddin' seems excessive. I would like t' see baffle construction, me bucko, since they can use t' Centuri baffle, but I guess they have a vested interest in sellin' waddin' as well as motors. Begad! Well, blow me down! Overall this model is easily seen and gives great slow flights on t' "D" motors.
The Estes Super Big Bertha is an upscale version of the immensely popular Big Bertha kit. It is based on a BT-80, and has a 24mm motor mount to accommodate the recommended D12-5 engine. Recovery is via a 24 in parachute. The kit contains 2 sections of BT-80, die-cut fins on 3/16th balsa, parachute, plastic nose cone, a long stuffer tube, chute, centering rings, engine hook, and a very narrow ...
Estes' re-release of the upscale Big Bertha. Modifications: Converted to fly on dual-24mm motors and changed the upper body-tube into a payload section. The kit includes: Two (2) standard Estes BT-80 tubes Four (4) upscale Big Bertha 3/16" Balsa Fins A 24mm mount Paper centering rings A NC-80 nose cone An Estes 18" parachute An Estes standard chute mount ...