Proven Designs

Original Rocket Designs for the BAR

Imagine...

You've purchased a "Designer's Special", and you came up with this killer design that flies like a dream. Nobody else has anything like it, and you want to share your idea with your fellow BAR's. Where can you send your flight-proven design for everyone to notice it?

Or...

You have a better design for a beginner's 3FNC model, one that has no bad habits and can be built for a fraction of the price of a commercially-packaged kit. How can you get the word out?

BARCLONE

This is your page!

The designs presented here have been built, tested for stability, and power-flight proven. There's no guesswork involved when someone tries out one of these designs, because the guesswork has already been done.

You can buy parts to build these designs at:
Semroc Astronautics Corporation
Balsa Machining Service
Totally Tubular
FlisKits, Inc.
Sunward Aerospace Group Limited

Model Name	Type / Description	Submitted By:
1.3X EAC Viper RockSim File	Length: 19.5” Diameter: 1.34” (ST-13) Fin Span: 6.84” Weight: 1.74 oz Engines: 18mm	Craig McGraw
1.91X Screamer RockSim File PDF File	Another upscale of a classic design, even at nearly twice the original's size, the Screamer can still fly up to 350' on an A3-4T. It can also reach over 1200' on a C6-5. Simple construction, using SEMROC components. Skill Level 1.	Jay Goemmer
2X Estes SARK RockSim File	Length: 25.63” Diameter: 1.04” (ST-10) Fin Span: 8.54” Weight: 1.74 oz Engines: 18mm	Craig McGraw
2X Hawkeye RockSim File	Length: 17.38” Diameter: 1.04” (ST-10) Fin Span: 8.04 oz Weight: 1.74 oz Engines: 18mm	Craig McGraw
741 Demo RockSim File	BARCLONE's rendition of an odd-ball design from the 1974 Estes Custom Parts Catalog. Yes, it can be made to fly! Skill Level 3. Not for beginners.	Craig McGraw
Aerobee 150 RTV-N-8 RockSim File	A scaled model of the famous AeroJet General sounding rocket. Derived from the earlier WAC Corporal, the Aerobee 150 was a larger and more-successful two-stage rocket designed to carry a 150 lb payload up to 75 miles altitude using a solid booster and a liquid bi-propellant sustainer. This early-series variant was 317.3" long with its booster; the sustainer, modeled here, was 241.8" long. Skill Level 1. Flights over 1200' on a C6.	Craig McGraw
Aerobee 150 RV-N-13b RockSim File	A stretched-body Standard, the RV-N-13b could carry the same 150 lb payload 20 miles higher than the Standard, and had higher velocity. This variant was 371.6" long with its booster; the sustainer, modeled here, was 298.6" long. Skill Level 1. Flights over 1200' on a C6.	Craig McGraw
Aerobee 150 Standard RockSim File	Originally known as the Aerobee-Hi, the Aerobee 150 Standard was the most common variant flown in the series. This version was 356.6" long with its booster, and could carry the same payload to 150 miles altitude. The sustainer, modeled here, was 283.6" long. Skill Level 1. Flights over 1200' on a C6.	Craig McGraw
Aerobee 150 Standard w/Booster RockSim File	Length: 21.11” Diameter: 0.908” (ST-8) Fin Span: 3.71” Weight: 1.34 oz Engines: (2) 18mm	Craig McGraw
Aerobee-Hi RockSim File Decal File	A 10% upscale of the classic 1950's MMI and 1960's EIRP design. SEMROC components. Skill Level 1.	Craig McGraw
Aerobee-Hi 60 RockSim File	A Series-60 upscale of our 18mm Aerobee-Hi. Inspired by an American Spacemodeler construction project by Pete Alway from the late 1980s or early 1990's. Upper stage only. Includes modern recovery components. Skill Level 1.	Craig McGraw
ALFA RockSim File	A modern rendition of a 1960's Czech design. Uses Estes components. Skill Level 1.	Craig McGraw
Alpha Ex RockSim File	Length: 20.125” Diameter: 0.976” (BT-50) Fin Span: 3.98” Weight: 1.22 oz Engines: (2) 18mm	Craig McGraw
Alpha Goon RockSim File	Length: 11.625” Diameter: 1.64” (BT-60) Fin Span: 4.64” Weight: 1.6 oz Engines: 18mm	Craig McGraw
Ambassador's Transport RockSim File	The job of being a planetary ambassador involves saying the right words as well as making an impressive entrance. This starship tells other representatives you're not just a second-rate Republic. Skill Level 2. For 18mm motors.	Craig McGraw
Anger Management RockSim File	Length: 11.75” Diameter: 0.976” (BT-50) Fin Span: 3.55” Weight: 0.76 oz Engines: 13mm	James Pierson
Angstrom's Arrow RockSim File	Elegant, delicate-looking, long-body design, yet still capable of reaching 350' on a single C6-3. Mid-body separation allows for single or double parachutes. Skill Level 3. 18" single parachute recovery, or multiple 12" parachutes. C6-3 is the only recommended motor.	James Pierson
Annabelle RockSim File	This is my answer to the Estes Big Bertha, and the Quest Big Betty. It can accept "C11", "D12", and "E9" motors.	Craig McGraw
Antares RockSim File	A retro-50's style of spaceship, simple lines, but good performance expected.	Craig McGraw
Arrow Head RockSim File	Length: 10.0” Diameter: 0.736” (BT-20) Fin Span: 4.08” Weight: 0.98 oz Engines: 13mm	James Pierson
Ascender RockSim File	Sleek, stylish version of a sounding rocket, looks good on the pad or on the desk. For 18mm engines. Skill Level 1. Uses SEMROC components.	Craig McGraw
Ascender 29 RockSim File	Sleek, stylish version of a sounding rocket, looks good on the pad or on the desk. For 29mm engines. Skill Level 1. Uses SEMROC components.	Craig McGraw
ASP RockSim File	Simple sport design with good performance on 18mm motors. Skill Level 1.	Craig McGraw
Astro Ventura RockSim File	Length: 17.8” Diameter: 2.22” (BT-70) Fin Span: 2.48” Weight: 0.97 oz Engines: 13mm	James Pierson
Baby Cherokee RockSim File	Length: 12.9” Diameter: 1.32” (BT-55) Fin Span: 5.27” Weight: 1.48 oz Engines: 18mm	Craig McGraw
Better Bertha	A nice modification of the Estes Big Bertha that allows for multiple motor combinations.	Doug Sams
Big Blue Bird Zero	A great up-scale of the classic Estes kit. Uses 29mm motors.	Buzz Nau
Black Brant III RockSim File	Quick to build, this version of the Black Brant III has been scaled to the BT-55 tube, making it possible to use the still-available PNC-55BB nose cone from Estes. If a balsa nose cone is desired, BMS can semi-custom-cut one from the same dimensions.	Craig McGraw
Blue Sneek RockSim File Decal File	Sport-Performance design in the classic Centuri style. Skill Level 1.	Craig McGraw
Blue Sneek 2 RockSim File Decal File	Two-stage payloader version of the BARCLONE Blue Sneek. SEMROC components. Skill Level 2.	Craig McGraw
Blue Sneek 29mm RockSim File Decal File	Sport-Performance design in the classic Centuri style. 29mm motor version. Skill Level 1.	Craig McGraw
Bobcat RockSim File	Sharp styling is possible, even on a tight hobby budget. This model packs a lot of performance into a lightweight airframe, but it doesn't drain your wallet during construction. Skill Level 2. For 18mm motors.	Craig McGraw
Bo-Maxximus Interceptor RockSim File	Length: 29.9” Diameter: 1.32” (BT-55) Fin Span: 6.32” Weight: 3.47 oz Engines: 24mm	James Pierson
Cadet Page 1 Page 2 Page 3 RockSim File	An intermediate sport design from our 2002-2003 series. Simulation shows fins on main body -- actual plan should have fins on the pods. For 18mm motors. Skill Level 2.	Craig McGraw
Caesarus RockSim File	Futuristic star liner. Estes components. Skill Level 3.	Craig McGraw
Cargo Star Transport RockSim File	Length: 10.25” Diameter: 1.64” (ST-16) Fin Span: 2.55” Weight: 0.87 oz Engines: 13mm	James Pierson
CDD-75-PL40 RockSim File	A smaller 75% version of the Cherokee Double-D, using a Quest Navaho-AGM and Payloader One as the starting point. Payload section is 4.0" long. Can also be constructed using Estes Series-50 components. Skill Level 2.	Craig McGraw
Centaur Page 1 Page 2 Page 3 Page 4 RockSim File	Here's my version of a BT-60 type two-stager, staying in the "TAUR" family of names.	Craig McGraw
Centuri Probe RockSim File	A celebration of the designs of yesterday, the Centuri Probe is a heartfelt attempt to capture the spirit and flavor of those famous 1960s Centuri catalog images in an original model. Although not a direct copy of any Centuri kit, and not an upscale replica, the Centuri Probe still retains that certain look-and-feel. Almost 25” long. Two-stage design, for 18mm engines. Skill Level 2. Uses SEMROC components.	Craig McGraw
Chadwick RockSim File	A high-performance style, two-stage payloader.	Craig McGraw
Challenger III RockSim File	Length: 35.875” Diameter: 1.34” (ST-13) Fin Span: 5.72” Weight: 5.08 oz Engines: (2) 24mm	Craig McGraw
Cherokee Double-D RockSim File	A new classic! Flight-proven two-stage payload version of the beloved Estes Cherokee-D. Decals available through Excelsior Rocketry. Estes components. Skill Level 2.	Craig McGraw
Cherokee DD4 RockSim File	For HPR enthusiasts, this is a 3X upscale, 4" diameter, 54mm version of the BARCLONE Cherokee Double-D. Not for beginners. The components of this model must be crafted from scratch; they are not commercially available.	Craig McGraw
Cherokee Triple-D RockSim File	An extreme derivative of the BARCLONE Cherokee Double-D concept, this model is not for beginners. Requires understanding of both staging and clustering. Also requires an 8' tower for launching. Estes components. Skill Level 5, due to construction and operation skills needed.	Craig McGraw
Cherokee II RockSim File	The largest variant of the Cherokee lineage, this is a monster 4X upscale of the BARCLONE Cherokee Double-D with a 5.3" diameter main body. The length is over 126", and requires two Ellis Mountain L-330 reloads. Requires electronic staging and recovery deployment for both the booster and the sustainer sections. Can reach 16,000' AGL. Not for beginners. Some components are commercially available.	Craig McGraw
Clipper RockSim File PDF File	A sport design from 2003, updated with improved recovery components and simplified one-piece fins. Capable of over 400' on a 13mm "A" motor (using an adapter). 18mm motor mount. Skill Level 1.	Craig McGraw
Cloud Tickler RockSim File	Combining traditional fins with tube fins, this model is futuristically styled for intra-atmospheric flight. Uses 13mm motors. One of the "Schoolyard Sounders". SEMROC components. Skill Level 2.	Craig McGraw
Commander II RockSim File	A conversion plan for the Quest Commander. Changes the motor to 13mm, and dresses up the appearance. Skill Level 1. A3-4T........400'.......3.52 FPS Dv (First Flight) 1/2A3-2T.....140'......22.90 FPS Dv	Craig McGraw
Cone Itchy Way RockSim File	Length: 18.3” Diameter: 4” (Cone diameter) Weight: 2.822 oz Engines: 18mm	Craig McGraw
Cosmic Dart RockSim File	Length: 14.8” Diameter: 1.326” (Shroud diameter) Fin Span: 2.55” Weight: 0.92 oz Engines: 13mm	James Pierson
Cosmic Poo RockSim File	Length: 16.8” Diameter: 1.9” (Shroud diameter) Fin Span: 3.55” Weight: 1.41 oz Engines: 13mm	James Pierson
Cosmic Ray RockSim File	This is a blatant shot at the Estes X-Ray and the Quest Gamma Ray. The fins are proportional in size to both of those.	Craig McGraw
Crazy Diamond RockSim File	Designed by Lance Ladd. A "Flying Barb Of Death" influenced by the wispy strains of Pink Floyd on the speakers. Estes components. Skill Level 2.	Lance Ladd
CSL Douglas RockSim File	The second in a series of Civil Space Liners, honoring significant 20th and 21st Century entertainers. This starship is named for Bluegrass Dobro virtuoso Jerry Douglas, considered to be "the Jimi Hendrix of acoustic music". Skill Level 3. For 24mm motors.	Craig McGraw
CSL Lightfoot RockSim File	Length: 41.8” Diameter: 1.5” (BC-1043 diameter) Fin Span: 7.04” Weight: 3.71 oz Engines: 24mm	Craig McGraw
CSL Murray RockSim File	Civil Star Liner series named in honor of various 20th Century entertainers. The Murray is named after 60's, 70's, and early 80's singer Anne Murray. Requires two C6-5 motors. SEMROC components. Skill Level 3.	Craig McGraw
Custom Landviper Instructions Picture #1 Picture #2 RockSim File #1 RockSim File #2	How to build a clone of this cool 3 18mm cluster rocket from Custom.	Scott McCrate RockSim file #1 by: Scott Aleckson RockSim file #2 by: Kevin Johnson
Cygnus Probe RockSim File Decal File	Futuristic unmanned robotic probe to explore planetary formation around the nearest systems to our own. SEMROC components. Skill Level 2.	Craig McGraw
Dart RockSim File	A nice, simple Mini-Brute type of rocket with good performance.	Craig McGraw
Deltoid Page 1 Page 2 Page 3 Page 4 RockSim File	A tube-fin BT-55 payloader. It's loosely based on the Boeing Delta, hence the name.	Craig McGraw
Deltoid Starliner RockSim File	Length: 30.0” Diameter: 0.976” (BT-50) Fin Span: 3.54” Weight: 1.66 oz Engines: 18mm	James Pierson
Der Dopple Max RockSim File	Another two-stage modification of a classic Estes design. Based around Der Big Red Max, this model offers flights up to 2600' using a combination of motors. Long 24mm mounts accept Estes "E" and "D" motors, and "C" motors using adapters. Estes components. Skill Level 2.	Craig McGraw
Der Grosse V-3 RockSim File	Clustered version of the Estes Der V-3. Long 24mm mounts accept Estes "E" and "D" motors. Estes components. Skill Level 1.	Craig McGraw
Diaper Loader RockSim File	Hold yer breeches, hold yer noses... Move yer keester and run fer the roses! This model teeters right on the edge of makin' you mess yerself up baaad... Uses 18mm motors. Determined to be adaquately stable through the C6... The D3 has a 0.97 margin of stability, but should have enough burn-off of propellant before leaving the rod to bring the margin to 1. We suggest using a 48" rod for D3 flights, just to be sure... Skill Level 1.	Craig McGraw
Dominion Keeper RockSim File	Length: 23.2” Diameter: 1.04” (ST-10) Fin Span: 6.09” Weight: 1.44 oz Engines: 18mm	Craig McGraw
Drakken RockSim File	Full Name -- "Cormes* Protectorate Drakken Defender" (*Pronounced COR' - meez) The outer territories of the Cormes Protectorate have been vulnerable to the marauding intrusions of the Outworld Resistance for decades. To keep these lawless pirate bands at bay, the Protectorate developed the Drakken (Dragon) Defender, an agile craft with plenty of bite. In the hands of a skilled pilot, the Drakken Defender proves itself true to its namesake time and again. Skill Level 2 Recommended Motors -- A8-3 [120'], B6-4 (First Flight) [320], C6-5 [730']	Craig McGraw
Eaglet RockSim File	A simple design for small fields, but still capable of putting in some respectable flights with its 13mm motors. Skill Level 1. Uses SEMROC components.	Craig McGraw
Eee-Nee-Prize RockSim File	Length: 6.57” Diameter: 1.57” (PPB) Fin Span: 3.55” Weight: 0.38 oz Engines: 13mm	James Pierson
Empyria RockSim File	Futuristic fighter-interceptor. SEMROC components. Skill Level 3.	Craig McGraw
Eugene's Axe RockSim File	Keep your eyes on that craaaazy axe man Eugene! From the relics of musical history, this gig has its sights high in the sky! Requires an E9-6 motor. SEMROC components. Skill Level 3.	Craig McGraw
F-52 Thark RockSim File	Fantasy starship interceptor that flies on 24mm motors. Skill Level 2.	Buzz Nau
F-77 Daydreamer RockSim File	Length: 22.6” Diameter: 0.976” (BT-50) Fin Span: 6.98” Weight: 2.1 oz Engines: 18mm	James Pierson
Falconaire RockSim File	Length:28.55” Diameter: 1.34” (ST-13) Fin Span: 6.38” Weight: 1.86 oz Engines: (2) 13mm	Craig McGraw
Flash RockSim File	Length: 12.75” Diameter: 0.759” (ST-7) Fin Span: 2.89” Weight: 0.5 oz Engines: 13mm	Craig McGraw
Fledgling RockSim File	This one is meant for beginners who don't want just another Estes Alpha or Quest Astra.	Craig McGraw
Gnat RockSim File	Inspired by science fiction concepts from the late 19th and early 20th centuries, this micro-model puts a lot of performance into a small, quick-build package. Skill Level 1. Use ONLY the 1/2A3-4T or the A3-4T motors.	Craig McGraw
Goblin 2x RockSim File	An upscale of a classic Estes design. For use with 29mm motors. Simple to build. Skill Level 1.	Craig McGraw
Gryphon RockSim File	A sport design with a cruiser attitude. Skill Level 1.	Craig McGraw
Gryphon 29mm RockSim File	A sport design with a cruiser attitude. Skill Level 1.	Craig McGraw
Hawk RockSim File	Sport two-stager. Warm-N-Fuzzy Centuri-inspired design similar to the Micro-Probe. (Actually is about the same size, but different fins...) Instructions show conversion steps needed to use 13mm boosters and sustainers if-and-when "T"-series booster production resumes... Skill Level 2.	Craig McGraw
HorseFly Page 1 Page 2 Page 3 RockSim File	BT-60 upscale of the Centuri FireFly. Uses standard 18mm motors. Uses a Semi-Custom BMS nose cone. Skill Level 3.	Craig McGraw
Inquisitor Page 1 Page 2 Page 3 RockSim File	Three stage, high-altitude, payload rocket.	Craig McGraw
Kryton RockSim File	Ring-finned design inspired by sci-fi rockets of the past. Another "Schoolyard Sounder". Uses 13mm A10-3T exclusively. SEMROC components. Skill Level 2.	Craig McGraw
Lil' Battle Axe RockSim File	Minimum diameter, 18mm motor, unique fin design.	Craig McGraw
Little Joe I	Semi-Scale model that Yitah used to sell.	Yitah Wu Scanned by: Bill Spadafora
Longneck RockSim File	Move over, Mean Machine! This modroc can reach heights that would give you a nose bleed! Capable of over 1000' on the F21W-6, the Longneck is almost 102" from nose tip to fin tip. SEMROC components. Skill Level 2.	Craig McGraw
Lynx Page 1 Fin Patterns RockSim File	BT-50 sport, boattail, 6-fin.	Craig McGraw
Master Blaster RockSim File	A retro-50's vintage SciFi design reminiscent of the Estes Galactic Pirates. Skill Level 2. Parachute recovery. For 18mm motors.	James Pierson
Maxi Apogee I Page 1 Page 2 Page 3 RockSim File	BT-60 upscale of the Estes K-5 Apogee. Short booster/short sustainer version. Skill Level 2.	Craig McGraw
Maxi Apogee II Page 1 Page 2 Page 3 RockSim File	BT-60 upscale of the Estes K-5 Apogee. Long booster/long sustainer version. Skill Level 2.	Craig McGraw
Midget Upscale (1.2x)	A nice 1.2x upscale of the Estes Midget using Quest T-30 tubing.	Doug Sams
MIDI-Loader RockSim File PDF File MIDI-Loader Mk II RockSim File	MIDI-Loader is a 1.8X upscale of the "Schoolyard Sounder" Mini-Loader, designed to take 18mm motors. Model can be built in two different ways: Traditional payloader or sport-performance. Skill Level 1.	Jay Goemmer
Mini-Jet #1 RockSim File RockSim File 2	One of the "Schoolyard Sounder" series of small models, this design has spectacular performance, and can punch through 300' on a 1/2A3-4T. Skill Level 1. Streamer recovery. For 13mm motors only.	James Pierson
Mini-Jet #2 RockSim File RockSim File 2	One of the "Schoolyard Sounders", this BOMARC-esque cruise-missile-inspired model flies beautifully on just 1/2A3-4T motors. Skill Level 1. Streamer recovery. For 13mm motors only.	James Pierson
Mini-Jet #3 RockSim File RockSim File 2	One of the "Schoolyard Sounders", interesting open-center wing design. Flies beautifully on 1/4A3-3T and 1/2A3-4T motors. Skill Level 1. For 13mm motors only.	James Pierson
Mini-Jet #4 RockSim File	Length: 10.125” Diameter: 0.544” (ST-5) Fin Span: 3.55” Weight: 0.41 oz Engines: 13mm	James Pierson
Mini-Jet #5 RockSim File	Length: 10.125” Diameter: 0.544” (ST-5) Fin Span: 3.55” Weight: 0.44 oz Engines: 13mm	James Pierson
Mini-Jet #6 RockSim File	Length: 10.125” Diameter: 0.544” (ST-5) Fin Span: 3.55” Weight: 0.39 oz Engines: 13mm	James Pierson
Mini-Jet #7 RockSim File	Length: 10.125” Diameter: 0.544” (ST-5) Fin Span: 3.55” Weight: 0.39 oz Engines: 13mm	James Pierson
Mini-Jet #8 RockSim File	Length: 10.125” Diameter: 0.544” (ST-5) Fin Span: 3.55” Weight: 0.39 oz Engines: 13mm	James Pierson
Mini Loader RockSim File	A "Schoolyard Sounder" from 2003, this small classically-styled payloader boasts astounding performance on 1/4A and 1/2A 13mm motors. Skill Level 1.	Craig McGraw
Mini Mega RockSim File	This model is a simple 60% downscale of the Estes Astron Omega. Excellent performance on 18mm motors. Skill Level 2. Estes/BMS components.	Craig McGraw
Minotaur Page 1 Page 2 Page 3 Page 4 RockSim File	Big, burly BT-70 payloader for "D", "E" . and "F" motors. Plan and 3D image show basic bulkheads instead of turned cones for the simulated strap-ons. "Alpha-style" 50K cones used in original design. Skill Level 2.	Craig McGraw
Needle Point RockSim File	A simple model in the "Schoolyard Sounders" series, following the pattern of other classic long-body/small fins designs. Can reach 300' on either the A3 or A10 motors. Not recommended for 1/2A or 1/4A motors. Skill Level 1. For 13mm motors.	Craig McGraw
Nightwing RockSim File Decal File	Original design by EVModels, derived from the "Azura". Simple to build, uses a 13mm A3-4T for power. One of the "Schoolyard Sounders". Estes components. Skill Level 2.	EchoVictor
No Tube Left Behind RockSim File	A stretch-limo of tube-fin creations, this modroc starts with the whistle tubes from a couple of Estes Screamin' Mimi's and a spare full-length BT-20. I hate to see good tubes go to waste. Estes components. Skill Level 1.	Craig McGraw
Nu-B1ST RockSim File	A model that looks sharp and fast standing still, this design is not your typical 3FNC or 4FNC. Can accept 24mm "F" class motors for flights up to 2000', but still provides great performance to altitudes over 600' on just a "D" motor. Requires a 3/16" launch rod for all motors. The Estes D12-5 requires a 48" rod, while all others require only a 36" rod. Skill Level 2.	Bikegod
Omega Centauri Probe	An exotic interstellar starship that flies on 18mm motors.	Buzz Nau
One Good Egg RockSim File	Not your every-day egglofter, this one means business! MPR to HPR power range. Capable of sending a Grade "A" Large hen's egg over 3100' on 29mm motors. Not for beginning modelers. Requires custom-formed components not commercially available. Skill Level 3 due to complexity of manufacturing custom components.	Craig McGraw
Payloader RockSim File Decal Sheet	A modernization of the early Centuri design, the BARCLONE version simplifies construction by using a single main body tube instead of a two-piece-with-coupler. The original BARCLONE version used Estes BT-20, but this has been updated to use all SEMROC (Centuri-based) components. Skill Level 1.	Craig McGraw
Pointy Thang RockSim File	From sharp minds come...very sharp objects! Go punch some holes in the sky with this Lava-Lamp-Of-Death design. For 18mm motors. Skill Level 3.	Craig McGraw
Privateer RockSim File	Pirate Raider from the 23rd Century. SEMROC components. Uses only the C6-5. Can reach over 680'. Skill Level 2.	Craig McGraw
Prometheus RockSim File	Designed by Jay "Centuri Guy" Goemmer. Easy-to-build modroc inspired by the Centuri Taurus. SEMROC components. Skill Level 2.	Jay Goemmer
Pug RockSim File	Stubby little sport modroc for 13mm motors, capable of over 650'. One of the "Schoolyard Sounders". Estes components. Skill Level 1.	Craig McGraw
Punk 13 RockSim File	Sport flying, 13mm engine, mighty-mite. Skill Level 1.	Craig McGraw
Punk 18 RockSim File	Sport flying, 18mm engine, mighty-mite. Skill Level 1.	Craig McGraw
Punk 18XL RockSim File	Sport flying, 18mm engine, mighty-mite. Skill Level 1.	Craig McGraw
Punk 18XXL RockSim File	Sport flying, 18mm engine, mighty-mite. Skill Level 1.	Craig McGraw
Punk 24 RockSim File	Sport flying, 24mm engine, mighty-mite. Skill Level 1.	Craig McGraw
Rampage RockSim File	Futuristic hypersonic interceptor. SEMROC components. Skill Level 3.	Craig McGraw
Renegade Page 1 Page 2 RockSim File	Classic '60s-style 2-stage BT-50 payloader.	Craig McGraw
Rogue Bear RockSim File	A hypersonic, pilotless recon-penetrator of the 22nd Century, this craft skips in and out of the upper reaches of the atmosphere gathering intelligence on uncooperative foreign powers. Skill Level 2. For 18mm motors.	Craig McGraw
Sabre Dart RockSim File	Inspired by the Star Wars movies in recent years, this model provides great performance with an unusual ring-fin design. Skill Level 2. Streamer recovery. A3-4T is the only recommended motor.	James Pierson
Scorpion RockSim File	Another sleek interceptor in the futuristic Empyria-class. Recommended 18mm motors are B6-4, C6-3, and D10-5. Skill Level 2.	Craig McGraw
Scrambler:2 Page 1 Page 2 Page 3	This is an interpretation of the 80's Estes egglofter design.	Craig McGraw
Scythe RockSim File	Flying Sling Blade O' Death. Phantasy styling. Can reach 400' on C6-3 motors. Skill Level 2.	Craig McGraw
Sigma RockSim File	High-performance 13mm design. Odd fin shape (looks like the Sigma symbol when viewed from the side).	Craig McGraw
Sky Marshal RockSim File	From the badlands of the New West, the unregulated territories of the Western Spiral Arm, comes a craft that truly demonstrates the "long arm of the Law". Estes components. Uses 13mm motors. A "Schoolyard Sounder". Skill Level 2.	Craig McGraw
Snitch	Length: 22.575” Diameter: 1.04” (ST-10) Fin Span: 6.29” Weight: 1.42 oz Engines: 18mm Skill Level 1.	Craig McGraw
Snitch 29mm RockSim File	Length: 40.16” Diameter: 1.84” (ST-18) Fin Span: 11.14” Weight: 8.33 oz Engines: 29mm Skill Level 1.	Craig McGraw
Snitch 324 RockSim File	Almost 60" long, this HPR-rated 2.84" upscale of the BARCLONE Snitch takes three 24mm motors to get airborne. Capable of almost 3200' using F32-10s. Can still do almost 300' on D12-3s. Not for beginners.	Craig McGraw
Solar Flare RockSim File	Fantasy recreational cruiser. One of the "Schoolyard Sounders". Uses 13mm motors. SEMROC components. Skill Level 2.	Craig McGraw
Spear Tip RockSim File Fin Pattern	Another design in the "Schoolyard Sounders" series, Spear Tip features near-ideal performance from a 13mm motor. Will reach altitudes over 450', and deployment velocities of less than 5 FPS, using the A3-4T. Skill Level 2.	Craig McGraw
Spear Tip II RockSim File	A 1.4X upscale of the original Spear Tip, using SEMROC Series 10 components. Reaches altitudes over 800'. For 18mm motors. Skill Level 1.	Craig McGraw
Spectral Queen RockSim File	In the late 21st Century the commercial airliner manufacturers applied common airframe technology to new engine technology, and produced this demonstrator. With styling that reminds one of Boeing's 727 and 717, and the McDonnell-Douglas DC-9 and MD-80 jetliners, this ship would carry passengers and freight into the 22nd Century to the far-flung colonies of Earth. Skill Level 3. For use with 2-A10-3T motors only. Parachute recovery.	Craig McGraw
Spectre RockSim File	Futuristic hypersonic fighter. SEMROC components. Skill Level 3.	Craig McGraw
Spike RockSim File	Another "Schoolyard Sounder". This minimal-shape, minimal-component model takes performance to another extreme. Capable of 200' on 1/4A motors; not recommended for full "A" power. Skill Level 1. For 13mm motors.	Craig McGraw
Sprite RockSim File Decal File	Simple sport rocket. Easy to build. SEMROC components. Skill Level 1.	Craig McGraw
Starchaser Page 1 Page 2 Page 3 Page 4 RockSim File	A revised plan from 2003. For upper low-power and mid-power rocketry enthusiasts, the Starchaser can handle any 24mm motor from the C11 to F21W, giving flights of at least 200', and up to 1800'. First flight motor D12-5. Skill Level 2.	Craig McGraw
Star Ranger RockSim File	BARCLONE's interpretation for what might have been a prototype for the Estes USS Andromeda, or even the Estes Alien Explorer. Over 40" long. SEMROC components. Flies to 330' on a C6-3. Skill Level 3.	Craig McGraw
Static Probe II RockSim File	A mid-power design for intermediate builders and flyers -- not for beginners. Interesting fin design using AC plywood. Requires electronics to deploy recovery device at altitude -- motor-deployed recovery not recommended due to critical timing involved. Can reach 2900' on a single F39. Skill Level 4. Parachute recovery.	James Pierson
Static Probe IIB RockSim File	Length: 37.375” Diameter: 1.64” (ST-16) Fin Span: 7.65” Weight: 9.92 oz Engines: 24mm	James Pierson
Stiletto I RockSim File	A single-stage model heavily influenced by the two-stage Centuri Stiletto. One of the "Schoolyard Sounders" series. For use with the 13mm A3-4T motor only. Other motors not recommended due to higher deployment Vs. Skill Level 1.	Craig McGraw
Stiletto II RockSim File	Single-stage sport model, semi-upscaled from the Stiletto I design. For flights between from 200' to over 1000'. Skill Level 1.	Craig McGraw
Streak RockSim File PDF File	Simple, easy-to-build sport rocket. One of the "Schoolyard Sounders". Flies on a 13mm A3-4T to over 400'. SEMROC components. Skill Level 1.	Craig McGraw
Strega RockSim File	A two-stage payload model designed for 13mm boosters and sustainers. The upper stage qualifies as a "Schoolyard Sounder" by itself. Inspired by classic Centuri styling. Skill Level 1.	Craig McGraw
Strega II RockSim File	A two-stage payload upscale of the Strega. The sustainer uses 18mm motors, and the booster uses 24mm motors to get that "extra push" off the pad. Requires a 3/16" x 48" launch rod for safety. Skill Level 2.	Craig McGraw
Stryker RockSim File	A sleek, futuristic hybrid of a cruise missile and an interceptor, the Stryker is sure to be an attention-getter in any collection. For 18mm motors. Uses SEMROC components. Skill Level 1.	Craig McGraw
Swift RockSim File	BT-50 payloader, with a fin design borrowing from the '60s Centuri catalog.	Craig McGraw
Swish RockSim File	A sport design using a two-motor cluster. Good performance for such a large-diameter body. Altitudes of 500' are routine. Skill Level 2. For 13mm motors -- two required. Recommended motor: A3-4T.	Craig McGraw
Tempest RockSim File	Two-stage, sport design. Skill Level 3. Uses two (2) parachutes for recovery. Model is built from SEMROC components.	Craig McGraw
Thingus I RockSim File	A sport design resembling the SciFi cruisers of 40's and 50's pulp stories. Good performance with gentle parachute deployments. Skill Level 2. Parachute recovery. For 18mm motors.	James Pierson
Thunder Auk RockSim File	Designed by Jay "Centuri Guy" Goemmer. Over 25" long and easy to build, this is our first Thunder-Series derivatives. Flies over 1350' on a D12-7. SEMROC components. Skill Level 1.	Jay Goemmer
Thunder Dodo RockSim File PDF File	Another variation of the THUNDER series, this model begins life as an Estes Screamin' Mimi. An extended 24mm mount allows for "E" motor flights up to 1700'. Can fly easily to 500' on a C11. Long 24mm mount, can accept 18mm motors with adapter. Skill Level 1.	Craig McGraw
Thunder Goon RockSim File	Stealing some Thunder of its own, this is a kooky little adaptation of the Estes Baby Bertha into something other than it was meant to be. Our mad scientists are laughing hysterically over this one. Estes components. Skill Level 1.	Craig McGraw
Thunder Pig RockSim File	A metamorphosis of the Estes Fat Boy into a short, fat rendition of the Centuri Thunder Roc. Estes components. Skill Level 1.	Craig McGraw
Thunder Stick RockSim File	This is a Thunder Auk that has been lengthened to over 61", and has been given a longer motor mount. Can fly to almost 3000' on "F" reloadables. Not for beginners. SEMROC components.	Craig McGraw
Trailblazer RockSim File	Long-body two-stager, in the Estes Avenger and Centuri Long Tom family.	Craig McGraw
Triton RockSim File	For high-altitude payload flights, this easy-to-build three-stage rocket provides the boost you need. Model is 27.80” long in its three-stage configuration. Skill Level 2. Uses SEMROC components.	Craig McGraw
Triton II RockSim File	The original Triton design suffered from poor performance in the full-stack configuration due to the lack of high-initial-impulse 18mm booster motors. This revised plan substitutes a 24mm first booster to compensate for this lack of motors, and the performance comes back to what was originally expected. All full-stack flights using "C11" and "D12" first boosters require a 3/16" x 48" launch rod for safety. Flights using "E9" first boosters require a 60" tower. Skill Level 2.	Craig McGraw
Tropospheric Explorer 18 RockSim File	A future, purpose-built science probe to be deployed from an orbiting spaceship, which studies the composition of a planet’s atmosphere prior to a manned landing. Skill Level 1. For 18mm engines. Uses SEMROC components.	Craig McGraw
Tropospheric Explorer 29 RockSim File	An upscale of the BARCLONE Tropospheric Explorer, this represents a good entry into the world of Mid-Power Rocketry. Allowing a wide range of "F" power motors, this modroc can reach 1000' in a slow, steady climb of almost 9 seconds. Requires a 10' or 12' tower for launch. Recommended for experienced modroc builders and flyers. SEMROC components.	Craig McGraw
Typhoon RockSim File	Interplanetary sciences research vessel. For 18mm motors. Long streamer recovery. A8-3......230' [First flight] B4-4......510' C6-5.....1030' Skill Level 3.	Craig McGraw
Vindicator RockSim File	Sleek, futuristic deep space probe. Skill Level 3.	Craig McGraw
Vireo RockSim File	Another two-stage design for 13mm motors. Odd fin positioning gives this design its character, but the performance does not suffer. Sustainer can be flown to over 500' by itself, and qualifies as a "Schoolyard Sounder". Full stack performance is over 800'. Skill Level 1. Booster motor: A10-0T Sustainer motor: A3-4T	Craig McGraw
Wasp RockSim File	Another "Schoolyard Sounder". Small, sleek futuristic private transport. 13mm motors. Skill Level 2.	Craig McGraw
Willow RockSim File	Delicate in appearance, this modroc uses both ring-fin and tube-fin stabilization. Almost 41" long, this model can reach over 300' on a single D12-3, and over 450' on a single E9-4 motor. SEMROC components. Skill Level 3.	Craig McGraw

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