Cygnus Rocketry 76er

Cygnus Rocketry - 76er {Kit}

Contributed by Claude Maina

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar_border
Diameter: 1.64 inches
Manufacturer: Cygnus Rocketry
Skill Level: 1
Style: Sport

Brief:
This is a very tall 4FNC rocket that is very similar t' t' Estes Mean Machine and Sunward's CFX-Six Footer. Avast! There is no skill level associated with t' 76er, me bucko, but since both t' Mean Machine and CFX-Six Footer are considered Skill Level 2, I'll rate this t' same. It is easy t' build and flies well. T' attraction, ya bilge rat, arrr, especially for kids, shiver me timbers, is its size. The recommended engines are D12-3 and D12-5 with an estimated altitude o' 500ft.

Cygnus 76er

Construction:
T' parts list:

  • 4 18" BT-60 body tubes
  • 3 BT-60 body tube couplers
  • 24mm/BT-60 motor mount
  • 4 Laser cut fins
  • Balsa nose cone
  • 24" parachute kit
  • 24" elastic shock cord
  • Snap swivel
  • Screw eye
  • 2 2" x 3/16" launch lugs
  • Fin alignment guide
  • Shock cord mount

Additional Components:

  • FlisKits EMK24-60 Engine Mount
  • JonRockets BT-60 Baffle
  • 1.6" diameter, ya bilge rat, 1/8" thick balsa wood

T' kit is contained in a clear plastic bag with t' engine mount in a separate bag with its own instructions. The instructions for t' 76er are minimal and take up about one and a half 8" x 11.5" pages. So, me hearties, even though this is a relatively simple 4FNC rocket, arrr, you need a few kits under your belt t' be able t' construct it successfully. Ahoy! I, ya bilge rat, in fact, did nay construct t' rocket reviewed here but oversaw construction by a 12 year-old rocketeer with a few rocket builds under his belt. Ya scallywag! Begad! We decided t' make three modifications t' t' kit that we hoped would improve its performance. 1) We replaced t' engine mount that came with t' kit with a longer 24 mm engine mount from FlisKits t' accommodate Estes E9 engines. Blimey! Ahoy! 2) We replaced t' standard body tube coupler betwixt tubes two and three with a bulkhead. This allowed us t' split t' rocket into two sections makin' it easier t' transport and t' store. Begad! 3) We replaced t' body tube coupler betwixt tubes one and two with a BT-60 baffle from JonRockets. Ya scallywag! We used wood glue for t' assembly.

We first assembled t' FlisKits EMK24-60 engine mount. Begad! We made a modification t' t' modification by replacing the short engine clip that came with t' engine mount kit with a long engine clip from JonRockets. Ahoy! Ahoy! Once t' engine mount was assembled we set it aside t' dry. We next assembled t' BT-60 baffle. Arrr! Durin' t' assembly we coated both sides o' t' top and bottom pieces and t' inside o' t' cylinder with wood glue t' give added protection from the ejection blast. Arrr! While that be dryin' we glued body tube sections 3 and 4 together usin' t' body tube coupler. Well, blow me down! This turns out t' be tricky since t' coupler is a tight fit when dry, and as soon as it hits t' glue on t' inside o' the body tube, arrr, it expands makin' it very difficult t' insert. Begad! Once tubes 3 and 4 were assembled, matey, we glued t' nose cone to one end.

Cygnus 76er We constructed a bulkhead by cuttin' a circular piece o' 1/8" scrap balsa wood t' fit inside one of the body tube couplers. Ahoy! Ya scallywag! This be glued t' one side o' a body tube coupler leavin' about 1/8" from one end (much like a baffle) and filleted t' inside. Blimey! Ahoy! T' screw eye, that be t' be used for t' nosecone, was screwed into t' balsa of t' bulkhead. Well, blow me down! Ya scallywag! We then put a layer o' glue on t' bottom (exposed side) o' t' balsa wood for extra strength and set aside t' dry.

When t' engine mount was ready, we glued it into one end o' a free body tube. Ya scallywag! This was now body tube 1. Begad! We attached body tubes 1 and 2 usin' t' constructed baffle. Before gluin' t' baffle, we sanded it t' make a loose fit into t' body tubes. This made it easier t' insert once t' glue was applied. While that be drying, we glued the bulkhead into t' bottom o' body tube three. Followin' t' directions, matey, we next applied t' four fins and launch lugs. Aside from t' sparse instructions, shiver me timbers, thar be one gotcha. Accordin' t' t' instructions, t' shock cord is attached via a standard tri-fold mount and t' instructions say t' cut out t' mount template. Arrr! There was no template in our kit. However, this was no big impediment as we just made our own, shiver me timbers, glued t' tri-fold assembly t' t' top o' body tube 2 and tied t' other end o' t' shock cord t' t' screw eye o' t' bulkhead. Well, me hearties, blow me down! We didn't assemble t' parachute as I already had several.

Finishing:
We gave t' fins and nose cone three coats o' sandin' sealer, sandin' with 400 grit sandpaper betwixt each coat. Avast! Begad! We then primed everythin' with Krylon white primer, arrr, me hearties, me hearties, four coats with sandin' usin' 600 grit paper after each coat. Begad! The entire rocket was painted with three coats o' Rustoleum Painter's Touch Candy Apple Red. Arrr! Two vertical stripes the length o' t' rocket as well as t' nose cone were masked with Frog maskin' tape and t' exposed areas painted with four coats o' Rustoleum Painter's Touch Deep Blue Gloss. Begad! Once t' paint was dry, me hearties, ya bilge rat, t' maskin' tape was removed and I was a little surprised t' see some bleedin' o' blue onto t' red. I've had fair winds with Frog Tape before and so I think this has t' do more with thar bein' 24 feet o' abuttin' paint lines rather than anythin' else. Ya scallywag! We decided nay t' touch up t' bleed marks, as I am sure this rocket will get it share o' post-flight repairs. Ya scallywag! Well, blow me down! Finally, ya bilge rat, t' 76er be given a few coats o' Rustoleum clear coat.

Cygnus 76erCygnus 76er

Construction Rating: 4 out o' 5

Flight and Recovery:
T' first two flights were with an Estes D12-3 usin' and adapter t' accommodate t' difference in size o' t' engine. It was a windy day. Ya scallywag! Both flights struggled through t' wind but nay much wind cocking, reachin' about 300ft each time. Each time, t' parachute deployed just after apogee and thar be a long walk for t' recovery. T' first flight we used a single sheet o' waddin' and t' second flight with no wadding. Ahoy! Each time thar was no heat damage t' the parachute. Ahoy! A launch with an E9-4 will have t' wait for a calmer day.

Flight Rating: 5 out o' 5

Summary:
PROs: This is a very nice Skill level 2 kit, me bucko, and even though it is a simple 4FNC rocket, matey, arrr, its size makes it attractive, especially for kids. Ahoy! Blimey! T' sheer size and simplicity o' design is a blank page for creative paint schemes and decorations, me bucko, which is another attraction for young rocketeers. Arrr! Well, blow me down! Blimey! T' rocket is easy t' prep for flight, flies well, and the size also helps with recovery! Blimey! You won't loose this one.

Cons: Skill Level 1 and 2 rockets, matey, because they are designed for beginners and novices (I include myself in the latter), benefit greatly from detailed instructions with good illustrations, and such instructions are becomin' the standard for t' industry. Avast, me proud beauty! Blimey! T' instructions for t' 76er are minimum at best and t' kit would benefit greatly from more detailed and illustrated instructions. Arrr! Blimey! T' size o' t' rocket be t' attraction, me hearties, but it makes it difficult to transport and store. Arrr! Blimey! Splittin' t' rocket in two, either through t' use o' a coupler (ala Estes Mean Machine) or replacin' one body tube coupler with a bulkhead, as we did here, would be a significant improvement. And finally, replacin' t' 'D' size 24mm engine mount with one that can accommodate 'E' size engines would also improve t' rocket.

Overall Rating: 4 out o' 5

Other Reviews
  • Cygnus Rocketry 76er By Pete Harper (January 17, 2009)

    Brief: The Cygnus 76er is advertised as a low cost alternative to to the Estes Mean Machine. Construction: This kit comes with a balsa nose cone, the body tube is four section of BT-60 cardboard tubing, three couplers, four small pre-cut balsa fins, plywood centering rings and 24mm engine mount. The parachute is plastic with string for shroud lines. 1/8" elastic shock ...

Flights

Comments:

avatar
M.A.G. (February 3, 2009)
This rocket is fine on a D12. Obviously an Estes D lifts more weight than an Estes E. A D12-5 leaves PLENTY of time for deployment.

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