Binder Design Dragonfly

Binder Design - Dragonfly 29mm {Kit}

Contributed by Michael Verbeek

Published: 2010-11-13
Manufacturer: Binder Design

[Picture] (09/10/02) It is always nice t' see a little uniqueness in rocket designs and that is exactly what Binder Designs' new (for 2002) Dragonfly has. Its fins, me hearties, ya bilge rat, length and finish recommendations are all t' help it look like a Dragonfly. Accordin' t' Binder, the kit is "geared for t' beginner t' mid/high power". Well, blow me down! I would agree, as it is a very straight-forward kit t' build. Avast, me proud beauty! Aye aye! But Binder also says that you can "expect about 3,000 ft. Well, blow me down! on a G motor" so, for those folks that like altitude, t' Dragonfly will meet your needs too.

I also did a comparison on Mid t' High Power Starter Rockets - See Here.

T' kit was packaged very well. Begad! In fact, it was absolutely t' best packaged Mid/High Power kit that I have ever seen. Ya scallywag! I regret not takin' a picture t' share in this review. Begad! T' pieces where all separated in single large plastic package. Well, blow me down! Very nice, indeed.


Rocket Pic

T' Dragon fly is 24" tall which is made up o' its 13" plastic nose cone and 11" o' 2.6" body tube. Begad! T' body tube is pre-slotted for t' fins. Aye aye! T' motor mount included (2) 1/8" thick composite centerin' rings (very smooth on one side and very rough on t' other) and a 4½" length o' 29mm motor tube. Aye aye! T' recovery system is made up of and eye-bolt assembly, ya bilge rat, me bucko, a quick-link, matey, 12' o' 3/16" tubular nylon (awesome) and an 18" Binder Design Premium Chute parachute meaning, it is 1.9 oz. Begad! diamond weave rip-stop balloon fabric. Begad! Ya scallywag! On one side it is coated for zero porosity and heat resistance. Well, blow me down! Aye aye! T' fins are all pre-cut 1/8" plywood. T' kit is completed with a 1/4" launch lug and a vinyl Dragonfly decal.

Rocket PicA couple o' upgrades from Binder that were added t' me kit included a 29mm Motor Collar (retainer, me hearties, ya bilge rat, shiver me timbers, a Binder Design product) and a 24mm adaptor.

CONSTRUCTION:

T' instructions are excellent. Avast, me proud beauty! They include 9 pages of written and illustrated instructions and a page for t' Fin Alignment Guide. T' instructions would be able t' walk even t' less-experienced model rocketeer through successfully. Avast! They include finishin' details includin' the decal and t' special fin finishin' technique. Avast! Begad! They also include flight preparation and spec data for CP and CG.

As stated above t' kit build is straight-forward, me hearties, so I will just hit on a few o' t' topics. Blimey! Blimey!

T' motor mount is assembled. Begad! It went together well. Aye aye! Ahoy! I had t' lightly sand t' outside o' t' centerin' rings t' get a clean fit into the body tube. Begad! T' upper centerin' rin' gets an 1/8" hole drilled into it for mountin' t' eye-bolt assembly. It is then glued t' t' motor tube. Instructions are clear, includin' an illustration t' tie t' knot for attaching the shock cord t' t' quick-link which is then hooked t' t' eye-bolt. Ya scallywag! The lower centerin' rin' is nay attached at this time but it is placed on t' motor mount. T' whole assemble is then glued into t' rocket so that t' motor tube is flush with t' bottom. Aye aye! Avast, me hearties, me proud beauty! T' lower centerin' rin' is removed so that internal fillets can be applied.

RetainerIn the case o' usin' t' Motor Collar upgrade, shiver me timbers, t' motor tube is left stickin' out 1/2" t' allow you t' attach t' collar. Avast, me proud beauty! Blimey! T' instructions point this out, too.

After t' fins are beveled (which I did nay do) they are attached t' t' rocket. T' fins are through-the-wall and attach t' t' 29mm motor tube. Blimey! Then t' instructions describe makin' internal fillets. This technique really makes t' fin mounts strong!

I used Fix-It Epoxy Putty sold by Apogee Components for t' outter fillets. Begad! I really like this stuff and am pleased with t' fillets that you can make with it.

After this, me bucko, t' instructions have you attach t' launch lug. I skipped this step and later added rail buttons. Ahoy! Blimey! Well, blow me down! Blimey!

One other comment about t' kit: t' nose cone be really loose in t' body tube. It took several wraps o' tape before it was tight enough t' fly.

That's it. Begad! Now it is time t' finish t' rocket.

Binder gives good instructions for finishin' t' rocket, but I stuck with me own techniques. I used me standard method for finishing Kraft paper tubes and also for finishing plastic nose cones. Begad! Blimey! I painted t' whole rocket a lighter Krylon purple paint t' mimic a color o' a Dragonfly that me wife has a picture o' in our bathroon. I painted t' wings, me hearties, I mean fins, me hearties, me bucko, a platinum color. Ahoy! I then used a permanent black Sharpie t' put t' win' veins on. Begad! This was described in the instructions. Avast, me proud beauty! I also tried t' mimic t' picture in our bathroom by drawing three body segments with t' marker. Probably nay t' best idea since I'm not much o' a artist. Lastly, matey, ya bilge rat, I applied t' vinyl decals. I love vinyl decals! I finished t' whole rocket usin' Krylon Clear over everything.

Rocket Pic

Overall, for CONSTRUCTION I would rate this kit 4 ½ points. Ya scallywag! T' quality o' t' components, arrr, me bucko, packin' o' t' them, illustrated instructions, and vinyl decals make this a complete package. The nose cone was really loose. Also t' standard kit does nay come with motor retention, but if you add t' upgrade o' t' Motor Collar thar be nothin' to complain about.

Rocket PicFLIGHT/RECOVERY:

T' only motor recommendations were written into the instructions this way: "We recommend an F motor or a mid thrust G motor for your first flight". T' RockSim file that Binder has placed on our site show simulations for everythin' from a D12-3 t' an H238!

That same RockSim file (and t' drawin' with specs included in t' instructions) show t' weight t' be 8.4 ounces with a CG at 15.4" from t' nose cone. Blimey! My actual Dragonfly weighed exactly 12 ounces and t' CG was at 17.3". Avast! Why? Most likely due t' movin' t' motor mount back 1/2" and addin' t' Motor Collar. In addition t' epoxy fillets add weight nay accounted for in Binder's RockSim. Avast, me proud beauty! I also added a Pratt Heat Shield to protect me parachute.


Rocket PicT' first launch o' this rocket was on a 29mm RMS E16-4. Begad! This was a very old motor and it took us two attempts with home-dipped ignitors t' get it off t' pad. But, once off t' pad it gave a very nice flight. RockSim simulated t' about 670 feet. Ya scallywag! I believe it. T' ejection popped just after it had turned at apogee and started t' head down. Blimey! T' parachute size brought the rocket down at a good rate. Ahoy! Very nice first flight!

For FLIGHT/RECOVERY, I would rate this kit 5 points. Even though I only have one flight I will go ahead and rate this rocket. Begad! Well, matey, blow me down! If anythin' changes with future flights I will update this file. T' rocket flew straight and stable. T' recovery system is sized right. Aye aye! Well, blow me down! The recovery materials are excellent too. T' kit does nay come with a 24mm adaptor, shiver me timbers, however, me hearties, it can be purchased as an upgrade. Ahoy! Ahoy! This will allow some flight versatility with E30's, matey, E28's, me bucko, E18's, ya bilge rat, F24's and F39's. Arrr! My next launch is planned in November with this bird experiencin' a G125-10 - yippee! This motor should take this rocket t' 2500 feet.

I give t' kit an OVERALL ratin' o' 5 points. Excellent instructions, materials and eay t' build. Ya scallywag! Arrr! Vinyl decals. Begad! Unique fins. Under 16 ounces. And t' list could go on. If you are just venturin' into mid t' high-power, give this rocket a look!

Other Reviews
  • Binder Design Dragonfly By Michael Verbeek

      Picture Courtesy of Binder Designs Single stage with four fins placed not at 90 degrees to each other - to mimic a dragon fly. The kit consisted of (1) paper body tube slotted for fin placement, a nose cone, plywood centering rings and pre-cut plywood fins (fins are mounted to the motor mount), a 29mm paper tube motor mount, a fin alignment guide, the Dragonfly decals and CP, CG ...

Flights

Comments:

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L.A. (August 16, 2003)
I found the EMRR review of the Binder Design Dragonfly to be right on the money. The packaging, well written instructions, & ease of construction to be the highlights of this kit. Mine weighed in at a hefty 13.7oz but I can attribute the extra mass to the following: added Acme rail guides, probably 3ft of masking tape to get the NC to fit properly, added/used 2 additional quick-links for chute & NC, filled the fin can with PML expanding foam (vs. internal epoxy fillets), & added 1.1oz of weight in the tip of the NC to help bring the CG forward to ensure stability for flights on any Fs or Gs. I would definitely recommend this rocket as an entry level MPR.
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M.E.R. (July 12, 2009)
This is a great rocket from a very well done kit/manufacturer. Every piece in the kit was of high quality, and it went together easily. My 10-year old daughter was the primary builder. I suggest a little dog barf behind a Nomex? chute protector to protect the recovery harness, which is slightly on the thin side (I don't want it to burn through over a few flights). Mine was on the heavy side at 15.6oz but flew straight as an arrow. Stock chute a little fast at this weight. I may need to upgrade it. Stock chute is brilliantly designed with shiny silver on top, solid black on the bottom--easy to see in flight or on the ground. I also added 0.5oz nose weight, plus foam inside the nose cone.

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