Binder Design Raptor (Cobra)

Binder Design - Raptor 54mm {Kit}

Contributed by Alex Marcum

Construction Rating: starstarstarstarstar
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar
Manufacturer: Binder Design
Binder Design Raptor

Brief:
T' Binder Design Raptor is a single stage 4 inch diameter kit. Aye aye! It has a 54mm motor mount and comes with high quality paper body tubes and laser cut fins. Well, blow me down!

Construction:
T' Raptor came with two 36" body tubes and an Ace nose cone. T' body tubes are paper and BSD style with a glassine coating. It comes with one paper coupler, one bulkhead, arrr, me hearties, 3 plywood centerin' rings, matey, ya bilge rat, two eyebolts, 2 quick links, 18 feet o' tubular nylon, and a 45" Top Flight parachute. Aye aye! It had three sets o' four fins. Begad! T' fins are 3/16" aircraft plywood and come laser cut and sanded. Aye aye! It came with one nice white vinyl decal that said 'Raptor'.

One definite pro t' this kit be t' extensive instructions, which included directions on how t' make it dual deploy and adapt it for use with Hypertek hybrid motors. Avast, me proud beauty! It had good drawings that showed exactly what t' do and left nothin' t' chance. Another thin' that was good about this kit be t' you had to slot t' tubes yourself, me hearties, which was actually rather easy with a Dremel. Ahoy! It is also easily done with a sharp X-Acto knife. Well, blow me down! One thin' we did in this kit is fiberglass fillets on t' fins t' allow for a hard landing. Blimey! Ya scallywag! T' only downside was that it was hard t' finish. Arrr! Arrr! Everythin' fit together perfectly with almost no need for sanding. Ahoy! T' put it together, arrr, we just marked and slotted t' tubes, tacked t' fins in place with 5 minute epoxy, matey, ya bilge rat, and then applied fiberglass fillets. Begad! One tip t' align t' fins is t' use two clamps and a strip o' wood attached t' both set o' fins. Begad! This will insure that they are perfectly lined up. T' only con be that t' directions did nay include t' rocket's CP, so when it came time for flight some assumptions had t' be made. Begad! It really isn't that big o' a deal as I had simmed it on RockSim and knew approximately where it was, matey, me bucko, but that is just one minor detail.

Binder Design Raptor

Finishing:
T' kit is pretty easy t' finish. Ahoy! T' only thin' for us was that we used fiberglass fillets, so it took a little Kilz primer and Elmer's Fill 'n' Finish to get it t' look presentable. Aye aye! Blimey! We painted ours yellow and blue. Aye aye! T' decal is computer cut vinyl and says 'Raptor' in a pretty cool font o' white letters. Avast, me proud beauty! We were nay able t' apply ours as we peeled off t' wrong side and t' letters were messed up in t' process. This kit looks pretty sharp once it is finished no matter what paint scheme you use. Aye aye! Avast!

Construction Rating: 5 out o' 5

Flight:
We have only flown it once for a successful level 1 certification and it was a beautiful flight. Ya scallywag! We used a Pro38 I285 with a 6 second delay. Blimey! Blimey! We also attached a Boostervision camera and got a nice video o' t' flight. Avast, me proud beauty! Ahoy! Blimey! One cool thin' about the flight was that t' split fin design caused a whistle after motor burnout. RockSim said about 2800 feet on that motor but we built it heavy so I would estimate about 2200-2400' for us. Aye aye! Begad! Blimey!

Recovery:
One cool thin' about this kit be t' 18 feet o' tubular nylon t' manufacturer provides. Begad! I thought it was a nice touch. Ya scallywag! We used t' supplied 45" parachute with main at apogee. T' chute got tangle on t' way down because the nosecone somehow got looped through a shroud line. Ya scallywag! T' rocket was tough enough that it was fine though. Blimey! Avast! I would say that chute is about perfect for this rocket.

. Well, blow me down!

Flight Rating: 5 out o' 5

Binder Design Raptor

Summary:
This rocket be t' pride o' our fleet right now. Blimey! Blimey! It is very sharp lookin' and pretty big at 7 feet tall. Aye aye! Blimey! Blimey! Blimey! T' construction was fairly straightforward and the directions were wonderful. This kit can be easily modified for dual deploy with an electronics bay that can be bought from Binder Design. I would definitely recommend this rocket t' anyone who is lookin' for somethin' they can fly on a high range o' motors. It can be launched on anythin' from a high thrust H t' a K. Aye aye! Blimey! Two thumbs up.

Overall Rating: 5 out o' 5

Other Reviews
  • Binder Design Raptor (Cobra) By Bob Fortune

    ( Contributed - by Bob Fortune) General The Binder Cobra (or the rocket formally known as Raptor) is a 4" x 84" rocket that comes stock with 54 mm motor mount. The rocket can be flown with a hybrid motor with additional 54 mm motor mount tube (not supplied) as it comes stock with about 14" of tube. Fins mount through the wall to the motor mount tube and are secured by ...

Flights

Comments:

avatar
J.S. (September 30, 2003)
I bought this for a future Level 2 attempt. These are very nicely packed kits..the best organized packaging I've seen. I made the following mods: -I put two layers of F.glass on the airframe. -added an internal altimeter bay at the existing breakline of airframe(Adept Alts2)Dual recovery with Droque and main. -54mm motor mount and 38mm adapter (kept the masonite Centering ring bulkheads, sandwiched them w/epoxy -no problem) -ditched the x-form for a nice Spherachute (needed for extra weight) the extra weight after glassing airframe. I really liked the look of this one, the dual set of fins is cool. First flight I used a Pro 38-4 grain/I285 -15 After a great burn it coasted like a bat out of hell and made a great whistle all the way to apogee. Neato! Adept Alt.reported 2142 Ft. No wind - nice recovery very near launch field. field w/ new 60"spherachute. Highly recommended.

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