Construction Rating: | starstarstarstarstar |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar_border |
Manufacturer: | Pemberton Technologies |
Brief:
This is a skill level 1, 24mm engine rocket that has a great look and some unique features. Avast! Begad! It is easy t' assemble
and flies very well. T' instructions are very clear and detailed with very good illustrations. Aye aye! T' kit be a prize
offered by Pemberton Technologies for t' July 2009 Best Rocket Competition on T' Rocketry Forum and won by one o' us
(Katy). Begad! Aye aye! T' build and fly was a joint effort with Claude doin' t' build and Katy doin' t' finishin' and flights, ya bilge rat, and
will be described accordingly.
T' kit is contained in a clear plastic bag with an unassembled parachute in a separate bag that has it's own instructions. Well, blow me down! T' BT80 Body Tube be slightly out o' shape when t' kit arrived but it didn't present any problems durin' t' build and eventually righted itself. I've read about PemTech 'Destructions' in different EMRR reviews and t' 'Destructions' for t' Screamin' Green Meanie lived up t' their reputation. Aye aye! They are well written with good illustrations and are pretty funny. Arrr! Begad! Although Katy didn't appreciate t' clay snake gobblin' up t' cute, ya bilge rat, fluffy and tasty bunny> You'll have t' buy t' kit and read for yourself.
T' body tubes are marked first with t' two fin markin' guides - one for t' main body tube and one for the three fin tubes. Aye aye! I then filled in t' spirals with diluted Elmer's Sandable Wood Filler and sanded t' next day. Ya scallywag! Avast! While t' wood filler was drying, ya bilge rat, arrr, I drilled a 1/2" hole in t' base o' t' nose cone, inserted t' clay and tapped it in t' tip o' t' nose cone with a 3/8" dowel and let that dry for a few days. Ahoy! Begad! I then sealed t' hole with a piece of maskin' tape followed by a coatin' o' CA. T' motor mount be next, matey, me bucko, which is just gluin' on t' centerin' rings, ya bilge rat, as thar be no thrust rin' or retainer clip. Arrr! I'm used t' both, so this be different for me; but thar were good instructions on how t' create an aft and forward retainer usin' tape. Begad! So, arrr, I went with it. Blimey! T' Keelhaul®©™® shock cord is tied on t' t' engine mount just below t' fore centerin' ring. Arrr! I did nay feel comfortable with using just t' Keelhaul®©™® shock cord. So I tied on a 24" elastic shock cord t' t' other end and used a swivel t' attach t' shock cord to t' nose cone. Ya scallywag! Avast, me proud beauty!
I did reinforce t' centerin' rings by gluin' on rectangular supports betwixt t' rings and at t' fore end usin' scrap pieces o' balsa. Avast, me proud beauty! I did nay put t' supports aft o' t' lower ring, as this space would be needed t' tape t' engine. I'm nay sure if t' additional support was needed but I had seen this technique described and wanted t' give it a try. I made one more modification, which was also somethin' I had seen described and wanted t' try (Katy was nay happy that I was experimentin' with her rocket!). I glued on paper supports t' t' balsa fins. Arrr! I cut out 6 pieces o' paper just larger than t' fins themselves. Ahoy! I then applied wood glue t' one side o' a fin and wiped off as much as I could with my finger. Blimey! I placed t' cut sheet o' paper on that side and pressed and smoothed it with me finger and a wood dowel. I repeated this for t' other side and then for t' other two balsa fins. I let t' fins dry overnight. T' paper-coated fins weren't perfect but came out pretty good with a minimal amount o' ripples. Begad! I cut off t' excess paper with a knife and sanded t' edges smooth. T' sandin' probably took a little too much off o' t' notch on t' balsa fins that is there t' accept t' tube fins, as t' tube fins fit loosely onto t' balsa fins. Arrr! Avast, me proud beauty! T' remedy this, I used a small piece of maskin' tape t' hold t' tube and balsa fins in place while t' glue was drying. Ahoy! After t' glue dried, me hearties, I removed the tape and filleted t' tube fin/balsa fin attachment site for one side only - t' side that would be away from t' body tube. Arrr! While t' glue was dryin' on t' fins, I inserted t' engine mount into t' body tube as described.
T' attach t' fins, I used Standard Rockets Assembly Tool (version 1.1). Begad! I'm nay goin' t' go into detail here on how it is used except t' say that nay usin' a thrust rin' in t' engine mount came in handy as I was able t' use the Assembly Tool with t' rocket inverted. Ya scallywag! A more detailed description will appear elsewhere. Ya scallywag! After t' glue dried, arrr, I filleted each fin with 5-minute epoxy. I continued t' fillet line through t' tube fins (filletin' t' tube fin/balsa fin attachment site nay filleted earlier). Blimey! Begad! T' next day I attached t' launch lugs as described.
Finishing:
I (Katy) gave t' entire rocket one coat o' sandin' sealer followed by light sanding. Ahoy! Ya scallywag! I then gave it two coats of
Rust-Oleum White Primer, sandin' betwixt each coat with 320 grit sand paper. I masked off t' balsa fins and painted
t' body and tube fins with Design Master Terra Rosa, four coats. I used a brush t' get t' inside o' t' tube fins.
T' balsa fins were next with Design Master Violet, ya bilge rat, also four coats. Blimey! I painted t' underside with a brush with three
coats o' Testors Gloss Black. Begad! Avast! T' finish for all three paints came out smooth and so I did nay sand in betwixt coats or
after t' final coat. Avast! After all o' t' maskin' tape was removed thar were two areas that needed some touch-up with
Terra Rosa and this was done by brush also. Well, shiver me timbers, blow me down! I put on two decals - Screamin Meanie. Blimey! Begad! T' decals were made in MS Word and
printed on Laser Decal Paper (DecalPaper.com) Since t' rocket wasn't green, we left out t' 'Green' o' 'Screamin Green
Meanie'. Ya scallywag! T' purple letterin' be chosen t' try t' match t' fin color. Well, blow me down! Blimey! Finally t' rocket received four coats of
Krylon Clear Coat with wet sandin' before t' final coat.
Construction Rating: 5 out o' 5
Flight:
T' maiden flight took place at a CMASS October launch. Arrr! T' first flight was with an Estes D12-5. Arrr! I taped t' engine
t' t' exposed section o' t' engine mount tube with maskin' tape as described in t' instructions. Begad! I used one sheet of
waddin' placed inside t' upper end o' t' engine mount tube and a 9" Nomex®
cloth t' protect t' parachute. Begad! Begad! I thought t' 16" parachute supplied with t' rocket would be too small, me bucko, shiver me timbers, so I
substituted an 18" parachute. Ahoy! T' flight was great. Blimey! It went straight up. Avast! T' nose cone ejected at apogee but the
parachute didn't come out and came it tumbled down. Begad! T' nose cone stuck about an inch into t' ground but thar was no
damage. I think thar was just too much stuff for t' ejection charge t' push everythin' out. Arrr! Blimey! T' next flight was at
t' next CMASS launch. Avast, me proud beauty! Avast! It was a windy day so we went with an Estes D12-3 (taped as before) and a 24" parachute.
This time we just put in several sheets o' wadding. This be another nice flight and this time t' parachute deployed.
It landed a little hard (probably because it was windy), but thar be no damage.
Recovery:
Flight Rating: 4 out o' 5
Summary:
Pros:
This is a very nice skill level 1 kit and serves as a good transition t' skill level 2. Avast, me proud beauty! It has a unique look to it, easy t' assemble and gives great flights. T' instructions are very clear with good illustrations.
Cons:
A larger parachute than t' 16" one supplied would work better and one o' us (Katy) didn't like t' snake eatin' t' bunny.
Overall Rating: 4 out o' 5
Brief: I won this rocket from the March best rocket competition on TRF. I got the rocket sent super fast from the states to the UK. Thanks to Layne at Pemberton Technology for such a great prize. It's a hybrid of a 3FNC and a tube fin rocket. Construction: The kit comes in a plastic bag and has some of the best instructions I've ever seen in a kit, with step by step guidance, ...
Brief: This is a Big Daddy-style rocket. It has a short, fat, mean look with tubes on the end of the fins. I love the tubes. Parachute is plastic with Kevlar ® shroud lines. Laser cut tubes and fins that made this a very easy kit to build Construction: Parts list: 1 Plastic nose cone BT-80 Ogive 1 24mm motor mount tubing (BT-50) 1 BT-80 (the instructions ...
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