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REV 2.4 - Wed Aug 10 18:48:25 2011

Binder Design
Stealth (38mm)
P.O. Box 13376
Salem, OR 97309
(503) 581-3180
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SPECS: 67.0" x 3.9" - 44 oz
ROCKSIM FILE: Right Click to Download
SpaceCAD FILE: MISSING - please submit here
REC'D MOTORS: 38mm H through I

Rating
(Contributed - by Donald Besaw [Who's Who Page] Jr - 10/20/04) Binder Design Stealth

Brief:
The Binder Design Stealth is a 4" high power sport rocket with stealth fighter styling and parachute recovery. This is the 38mm version. For you hybrid motor fans, a 54mm hybrid ready version of this kit is also available.

Construction:
The kit came in a heavy duty plastic bag with individual sections separating the various components. I was really impressed with this style of packaging.

The kit included:

  • 1 body tube
  • 1 payload section tube
  • 1 tube coupler
  • 1 nose cone
  • 1 forward bulkhead
  • 4 Stealth shaped main fins
  • 4 upper fins
  • 2 centering rings
  • 1 launch lug
  • 1 17" long 38mm motor mount tube
  • 1 36" nylon parachute
  • 1 nylon strap
  • 1 12' shock cord
  • 2 quick links
  • 4 washers
  • 2 eye bolts
  • 4 1/4" nuts
  • 1 Stealth vinyl decal
  • 1 fin marking guide
  • 1 instruction booklet

The instructions for this kit were very easy to follow and had lots of text and detailed drawings and were in logical assembly order. This kit was fairly easy to build but I wouldn't recommend it as a first HPR kit but a good second or third HPR kit. For all construction, I used Pacer 30 minute Zpoxy along with Binder Design milled fiber in my fillets.

I started construction by drilling 1/4" holes in the centering rings for my motor retention hardware and shock cord attachment. I then installed two 1/4" blind nuts in the aft centering ring and shock cord attachment in the forward centering ring and then applied epoxy to secure them. The centering rings were then epoxied on the motor mount tube. After the epoxy set up, I applied fillets for strength. I then attached the nylon strap to the eye bolt with a quick link and tightened it using a wrench.

The next step is to slot the body tubes for the fins, but I ordered my kit directly from Binder Design with preslotted tubes so this step was not necessary. The motor mount assembly was epoxied in the body tube followed by fillets to all tube/ring joints for strength plus a thin layer of epoxy was put on the masonite centering rings for additional strength.

I then sanded an airfoil shape on the main fins and attached them one at a time. The 1/2" launch lug was glued on 16 inches from the bottom of the body tube. The tube coupler and bulkhead were assembled and then mounted into the payload section tube as instructed. I sanded an airfoil shape on the forward fins and mounted them one at a time and applied epoxy to the inner tube/fin joints. Fin fillets were then applied by mixing milled fiber in with the epoxy for extra strength and used my fingers dipped in rubbing alcohol to make them smooth and round.

To mount the nose cone into the payload section, I wrapped several layers of masking tape around the nose cone shoulder and friction fit it into place.

I then attached the shock cord to the nylon strap and tied the remaining quick link to the free end of the shock cord to complete the build.

PROs: Easy construction and logical assembly order.

CONs: None.

Finishing:
I started by sanding the fins and epoxy fillets smooth and removed the sanding dust with a tack cloth. The model was sprayed with a couple coats of Krylon gray primer, sanded between coats, and then sprayed with three coats of Krylon Semi-flat Black enamel. After the paint dried, I applied the Stealth vinyl decal. These decals are a real pleasure to work with. I then secured the shock cord to the payload section and tightened down the quick link with a wrench before tying the nylon parachute to the shock cord as instructed.

PROs: Easy to finish.

CONs: None.

Construction Rating: 5 out of 5

Flight:
Binder Design recommends H, I, and J class motors for this rocket. This rocket does require wadding. I used dog barf with great success.

For my first flight, I loaded an Aerotech I161W with a medium delay and secured it into the model using two 1/4" machine screws, clips, and washers used as spacers. I then inserted about three to four handfuls of dog barf and then packed the parachute. The ignitor was inserted into the motor and the rocket was loaded onto a 1/2" launch rod.

At launch, the I161W lit with no problems and lifted the Stealth to a very respectable altitude (maybe 1,500-2,000 feet up), deployed the chute, and returned safely.

The next flight was on an Aerotech I285 Redline motor with a medium delay. This was a much nicer flight. The Stealth took off straight and fast under the bright red flame and went maybe 2,500 feet up before reaching apogee and deploying the chute. Unfortunately, the nose cone separated from the payload section and tumbled down. It was later recovered. The rest of the rocket came down about 1/2 mile away from the launch site.

PROs: Flies great especially on small and mid size I class motors.

CONs: None.

Recovery:
This rocket uses a 36" parachute which brings the rocket in rather slowly, in fact a little too slowly for my liking. I had quite a recovery walk on the first flight. For the second flight, I tied a knot halfway up the shroud lines and still had quite a walk. The dog barf wadding is adequate as I didn't notice any scorching of the chute.

PROs: Recovers nicely on provided recovery system.

CONs: Comes in a little too slowly for my liking.

Flight Rating: 4 ½ out of 5

Summary:
I really liked building and flying this kit. I chose this kit because I wanted something that would fly on I motors and stay in sight throughout the flight. I also chose it because I really liked the Stealth styling.

Again, I would not recommend this kit as a first HPR kit but probably as a good second HPR kit. I think it would be a great choice for a level 1 certification with an H123W or H242T motor with a short delay. If you have a LOT of room, this would probably be a great level 2 rocket flown on a CTI Pro38 5 grain J285 motor or Aerotech J350W or J420R motor.

Main PROs: Great instructions, easy assembly and finishing, great flight performance, reasonable price.

Main CONs: Recovery is a bit on the slow side.

Overall Rating: 4 ½ out of 5

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[Enter Flight Log]
Date Name Motor Ejection/
Altitude
Wind Notes
04-17-2004 Donald Besaw AT RMS I161-M Just Past (1-2sec) 10+ mph winds - Very nice first flight and my first I motor flight. Could not have been better. Very long walk for recovery and was recovered without even a scratch. I'd love to try an I285R next.
07-17-2004 Donald Besaw AT RMS I285-M Didn't See 5-10 mph winds - Beautiful, beautiful flight on the I285R, nice BIG red flame. Must have reached about 2,500-2,600 feet. Recovered after a very long walk with a few paint scrapes. Nothing major though. Absolutely incredible.
02-19-2005 Donald Besaw AT RMS I357-M Just Past (1-2sec) 5-10 mph winds - Beautiful flight, very fast punch off the pad, straight boost up to about 2,000 feet. Considerable walk for recovery, almost landed on an old tire rim in the grass. No damage.
05-21-2005 Donald Besaw AT RMS I285-M Just Past (1-2sec) 0-5 mph winds - Way awesome flight, man these I285R's burn nice. Ripped up to about 2,500 feet in a hurry. Received a bit of road rash on touchdown, nothing major though.
01-21-2006 Donald Besaw AT RMS I300-M Just Past (1-2sec) 5-10 mph winds - Very nice flight up to maybe 2,300-2,400 feet. Nice roar and big blue flame from the I300T. Excellent recovery, landed close to pad. No damage.
08-19-2006 Donald Besaw AT RMS I285-M Just Past (1-2sec) 0-5 mph winds - Excellent flight, flew in a drag race with another Stealth on an I161 so naturally I won easily as the I285R easily punched my Stealth up to maybe 2,500 feet. Recovered very close by. No damage.
01-06-2007 Donald Besaw AT RMS I154-M Very Late 0-5 mph winds - Beautiful flight on the I154J. Nice straight smokey boost to maybe 2,000 feet. Ejected very late but everything held together. Long walk for recovery. No damage.
08-04-2007 Donald Besaw AT RMS I211-M Apogee - Perfect 0-5 mph winds - Awesome flight on the I211W, very loud, thick smoke plume, huge white flame and about a 2.2 second burn. Straight boost to about 3,000 feet. I certainly got closest to the pad, landed about 20 feet away. No damage.
10-04-2008 Donald Besaw AT RMS I245-M Just Past (1-2sec) 5-10 mph winds - Excellent flight on the I245G Mojave Green. Awesome motor, loud, nice bright green flame. Arrow straight boost to about 2,000 feet. Moderate to long drift on recovery. No damage.
07-04-2009 Donald Besaw AT RMS I285-M Didn't See 0-5 mph winds - Beautiful flight, flew in a three way drag race with rockets on red, white and blue motors, I was first up and last down. Arrow straight boost to maybe 2,500 feet. Short drift on recovery. No damage.
09-18-2005 Steve Ramberg AT RMS H242-M Apogee - NC Down 0-5 mph winds - Straight and low. Great cert motor as you could see the whole flight. Cert Flight: L1

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