Marc in mask

Welcome to Marc's Totally Insane Fat Boy Rocket Fleet

TRA 14140(L3)/NAR 75263(L3)

Last updated on 1-20-2015

Marc on trolley

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Phoenix Area Rocket Clubs and National Associations:


Superstition Spacemodeling Society (SSS)
Arizona High Power Rocketry Association (AHPRA)
National Association of Rocketry (NAR)
Tripoli Rocketry Association (TRA)

The sheer lunacy of the rockets presented here, along with my Totally Insane 132 motor cluster rocket, could probably be used in a court of law to make the case that I would be better off being taken care of in a place with soft walls where the men in white coats will be real nice to me, most of the time, when I take my mandatory forced medication.

G. Harry Stine Memorial Launch, Rainbow Valley Arizona, October 2012

After the successful launch of my 132 motor cluster Darth Maul's Revenge at the Spring Blast launch, I decided to launch my entire Fat Boy fleet of the most ridiculous and totally insane Fat Boy rockets you have ever seen, at the October 2012 G.H.S launch in Arizona. The fleet flew spectacularly well. Not counting a couple of tangled chutes and some repairable zipper damage, I had a 100% success rate with all flights, with 100% of all motors in all insane clusters igniting. AND, I've got the photos and videos to prove it!!

Spring Blast Launch, Rainbow Valley Arizona, April 2013

I enjoyed the previous G.H.S. launch of all my Fat Boys so much (that's what it's all about, right?), that I made three more Fat Boys. Here are the three new ones:
I should have quit while I was waaaay ahead. All three were TOTAL disasters. The first one was totally destroyed beyond repair. Only one of the two G80 motors lit. It arc'd over hard and hit the ground really, really hard. The second one only had two of three G40 motors light. It arc'd over and did a land-shark. But, it was repairable. The third went up only on the central G40 motor. The three air-starts did not air start. I tried air-starting the three outboard E9 motors with canon fuse. The canon fuse was lit by the central motor. This method worked very well for me in the past on my Estes Saturn V, but it just did not work for me this time. It hit the ground hard, but, it too was repairable.
Whenever I have failures like this, I am compelled to fix what I think went wrong and keep launching them until they either succeed or are destroyed. The last two will fly again in the 2014 G.H.S launch.

G. Harry Stine Memorial Launch, Dry Lake Bed north of Kingman Arizona, October 2013

I fixed "Will Somebody Please Stop This Lunatic From Making Another Fat Boy!" and tried again. This time I used the new 29mm Estes black Powder F15 motors in all three motor positions. These are minimal Fs in every way possible, but they are still very cool. All three motors lit this time for a satisfactory ascent (it could have used more power). But, the chute got stuck and it hit the ground hard enough to break a fin. Dammit. This means that I must try again until it has a fully successful flight. And that means Spring Blast 2014. But for Spring Blast 2014, I'm going to try blue thunder composite Aerotech motors with Twiggy igniters from QuickBurst.
I also fixed "This Fat Boy Is Really A Cry For Help" and tried that again too. Again, I used the new Estes black Powder 29mm F15 motor in the central motor position, with three outboard Estes E9s. But this time I started them all on the pad. All motors lit this time for a satisfactory ascent. This was a decent, if a bit underpowered, flight. But it still hit the ground hard enough to break a fin on this one as well. Double dammit. Bigger chute next time. This means that I must try again on this one too. Also at Spring Blast 2014. Here too I'm going to try a blue thunder composite Aerotech motor in the central position with a Twiggy igniter from QuickBurst, and three Estes E12 motors in the outboard pods. That should kick its butt.
I'm starting to get crazy Fat Boys out of my system. I will soon semi-retire the fleet and move onto something else.

Table Of Contents

Name: Kentucky Fried Fat Boy

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Aerotech did not get the memo that the fire should come out the bottom of their single use 24mm F motors, not the top.

This Fat Boy has flown five times, four times succesfully:
  1. January-2004: Flew on an Aerotech F21-6 motor. Great flight!
  2. March-2004: Flew on an Aerotech F21-6 motor. Great flight!
  3. October-2004: Flew on an Estes E9-6 motor. Great flight!
  4. May-2004: Flew on an Estes E9-6 motor. Great flight!
  5. May-2011: Sat on the pad with an Aerotech F30-6 motor making like a fire fountain. :-(
I don't think the RSO will let me fly this one anymore.

Name: Fat Boy 1-24B

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This is the replacement for the destroyed one above. It flies on a single 24mm motor.

This Fat Boy has flown three times, succesfully:
  1. October-2012: Flew on an Estes E9-4 for a perfect flight! Simmed altitude is 470 ft.
  2. October-2012: Flew on an Aerotech E30-4 for a perfect flight! Simmed altitude is 765 ft.
  3. October-2012: Flew on an Aerotech F21-4 for a good flight! Slight zipper damage; delay should be longer. Simmed altitude is 1055 ft.
Construction & Flight Photos/Video, Simulation Information, and RockSim File Download

Name: Holy Fat Boy!

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This Fat Boy has an enlarged Holiest of Holies with a 29mm hole.

This Fat Boy has flown two times, succesfully:
  1. October-2012: Flew on an Aerotech F50-6 for a simmed altitude of 1072 ft. Great flight.
  2. October-2012: Flew on an Aerotech G80-7 for a simmed altitude of 1853 ft. Great flight.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: Paddle Faster Fat Boy! I Hear Banjos!

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Fat Boy must paddle like mad and get the heck outta here after hearing Banjos from deep in the woods (if you have not seen the movie "Deliverance", crawl out from under your rock, log into Netflix, and get it now. Then you will understand why this rocket must move so FAST). This Fat Boy reaches Warp-10 speeds with a single 38mm motor. The motor goes so far forward on this one, that it actually needs very little stabilization weight in the nose.
This Fat Boy has flown two times, succesfully:
  1. October-2012: Flew on a Cesaroni G185-7 VMax for a simmed altitude of 1703 ft. WOW this sucker is FAST! Perfect flight! Motor hardware was a Cesaroni two grain motor casing with a spacer since the G185 only has one grain.
  2. October-2012: Flew on a Cesaroni H143-7 Smokey Sam for a simmed altitude of 2674 ft. Perfect flight and I actually got it back! Motor hardware was the Cesaroni two grain motor casing with no spacer since the H143 is a two grain reload.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: The Fat Boy Finally Grew A Pair

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This Fat Boy flies on two 24mm motors.

This Fat Boy has flown two times, succesfully:
  1. October-2012: Flew on two E9-6 for a simmed altitude of 910 ft. This is equal to an F18. Both motors lit. Great flight.
  2. October-2012: Flew on two F32-6 Blue Thunder motors for a simmed altitude of 1650 ft.. This is equal to a G64. Both motors lit. Great flight.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: Fat Neutronium Boy

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While at home for a month and a half recovering from major surgery, I built this Fat Boy while FLYING on Oxycodone, a.k.a "Hillbilly Heroin". I put three layers of fiberglass on this guy including the fins. Why? I will never know the answer to that myself. You could hammer nails with this Fat Boy.
This Fat Boy has flown three times, twice succesfully:
  1. February-20??: Flew on two E30-7. Great flight.
  2. April-20??: Flew on two E30-7. One motor cato'd. Went up about 15 feet in an arc and plopped on the ground, then ejected. Rocket is OK. Flop.
  3. October-2012: Flew on two F32-6 Blue Thunder motors. This is equal to a G64. Perfect flight! All motors lit.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: Jar Jar Must Die!

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This "Fat Boy" is yet another that goes into the "What Was I Smoking?" category. This one flies on three 24mm motors.

This Fat Boy has flown six times, five times succesfully (see the crispy fried aft end):
  1. ???-20??: Tried to fly on three F39 reloadable motors. Only one motor lit. Flop.
  2. January-2004: Flew on three E9-6 motors. Great flight! All motors lit.
  3. March-2004: Flew on three E9-6 motors. Great flight! All motors lit.
  4. October-2004: Flew on three E9-6 motors. Great flight! All motors lit.
  5. May-2011: Flew on three E9-6 motors. Great flight! All motors lit.
  6. October-2012: Flew on three Estes E12-6 motors. This is equal to a G36. Great flight! All motors lit.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: OMG Fat Boy! WTF?

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Now we're starting to skirt the outer edges of WTF! This Fat Boy flies on four 24mm motors arranged in a star configuration with the three outer motors bulging out the sides like overgrown muscles.

This Fat Boy has flown four times, succesfully (see the crispy fried aft end):
  1. March-2004: Flew on three E9-6 and one D12-7 motors.Great flight! All motors lit.
  2. October-2004: Flew on three D12-7 and one E9-6 motors.Great flight! All motors lit.
  3. May-2011: Flew on three D12-7 and one E9-6 motors.Great flight! All motors lit.
  4. October-2012: Flew on four Estes E9-6 motors for a simmed altitude of 1248 ft. This is equal to a G36. Great flight! All motors lit.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: Hey Look, Ma! The Fat Boys Turning Purple!

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This Fat Boy flies on four 24mm motors, but arranged in a 2x2 matrix configuration all within the confines of the ariframe, unlike the previous four-24mm motor Fat Boy.

This Fat Boy has flown once so far, succesfully:
  1. October-2012: Flew on four Estes E9-6 motors for a simmed altitude of 1392 ft. This is equal to a G36. Great flight! All motors lit.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: Fat Muscle Boy

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This Fat Boy flies on seven 24mm motors arranged as a central 24mm x 95mm motor surrounded by six 24mm x 70mm motors.

This Fat Boy has flown once so far, succesfully:
  1. October-2012: Flew on one Estes E9-6 motors and six Estes D12-7 motors for a simmed altitude of 1236 ft. This is equal to a G81. Great flight! All motors lit.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: How Many Motors Can I Cram Up Fat Boys Aft?

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This Fat Boy flies on eight motors arranged as a central 24mm x 95mm motor surrounded by seven 18mm x 70mm motors, all inside the ariframe.

This Fat Boy has flown once so far, succesfully:
  1. October-2012: Flew on one Estes E9-6 motors and seven Estes C6-5 motors for a simmed altitude of 1154 ft. This is equal to a G51. Great flight! All motors lit.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: Floats Like A Butterfly, Stings Like A Fat Boy!

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This Fat Boy flies on eight motors arranged as two central 24mm x 95mm motors, two central 18mm x 70mm motors, and four 13mm x 45mm motors, all inside the ariframe. I'm trying something new with this one. This one has 1/4 inch copper elbows venting the ejection charge of the 13mm motors out to the atmosphere.

This Fat Boy has flown once so far, succesfully:
  1. October-2012: Flew on two Estes E9-6 motors, two Estes C6-5 motors, and four Estes A3-4 motors for a simmed altitude of 1107 ft. This is equal to a G42. Perfect flight! All motors lit.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: Mad Max Post Nuclear Wasteland Radiation Mutated Three Headed Fat Boy

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This Fat Boy is actually a cluster of Fat Boys, each Fat Boy itself a cluster of three 24mm x 95mm motors each.

This TOTALLY ridiculously insane Fat Boy has flown twice (one successful, one fatal):
  1. October-2012: This nut flew on six Estes E9-8 motors and three Aerotech F21-8 motors. This is equal to an I117 motor. Really awesome flight! All motors lit. Simmed altitude of 2430 ft.
  2. October-2013: Kingman, Arizona. This nut job tried to fly on nine Estes E12-8 motors this time. This time it suffered catastrophic motor failure and was totally destroyed. Four out of nine Estes E12 motors blew their nozzles, all on the same side, sending the rocket spinning out of control. A fifth motor had the nozzle pushed past the end by 1/8th inch. If the Earth had not gotten in the way the rocket might have been fine. I ordered these motors from Hobbylinc.com, on-line. They were delivered via UPS during the hottest portion of the Phoenix summer. Delivery took an unusually long time. During delivery those motors were certainly severely temperature cycled, numerous times; especially once they arrived in the Phoenix area. UPS was clearly not in any hurry to get those motors to me. I also don't know how Hobbylinc.com stored these motors and how long they had them. I can't know with 100% certainty, but this seems the most likely explanation. Blown nozzles are a common temperature cycling failure mode.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: Lucky 13 Fat Boy

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This Fat Boy flies on thirteen motors arranged as one central 24mm x 95mm motors surrounded by six 18mm x 70mm motors within the airframe, and six additional 18mm x 70mm motors attached as external pods.

This Fat Boy has flown seven times, mostly succesfull (see the crispy fried aft end):
  1. February-2001: Flew on one D12-P and twelve C6-7 motors. Great flight! All motors lit.
  2. October-2001: Flew on one D12-P and twelve C6-7 motors. Great flight! All motors lit.
  3. March-2002: Flew on one D11-P and twelve C6-7 motors. Some motors failed to light. Flight was a flop. Had to do extensive repair.
  4. May-2002: Flew on one D12-7, six C6-7, and six B6-0 in pods. Great flight! All motors lit.
  5. January-2004: Flew on one E9-8 and twelve C6-7 motors. Great flight! All motors lit.
  6. October-2004: Flew on one E9-8 and twelve C6-7 motors. Only 10 of 13 motors lit. So-so flight.
  7. October-2012: Awesome flight on one Estes E9-8 motor and twelve Estes C6-7 motors. This is equal to a G81. Perfect flight! All motors lit. Simmed altitude of 1512 ft.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: What The Heck Was I Smoking When I Built This Fat Boy?

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What Was I Smoking This Time? This Fat Boy flies on 22 motors arranged as one central 24mm x 95mm motors surrounded by six 18mm x 70mm motors within the airframe, and 15 additional motors attached as external pods.

This Fat Boy has flown three times succesfully (see the crispy fried aft end):
  1. March-2004: Flew on one E9-6, three D12-7, nine C6-5, three B6-6, and six A10-P motors. One of the A10 motors did not lite. Flight was very wobbly but stabilized after one second. This meant that it needed just a few more ounces of nose weight.
  2. October-2004: Adding 9 more ounces of nose weight did the trick. It flew on one E9-6, three D12-7, twelve C6-7, and six A10-P motors. Great flight! All motors lit. No more wobble.
  3. October-2012: Awesome flight on four E9-6, twelve C6-7, and six A3-4 motors. This is equal to a H126. Perfect flight! All motors lit. Simmed altitude of 1700 ft.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: Fat Cojones Boy

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This Fat Boy flies on 27 motors, three 24mm x 95mm motors and 24 13mm x 45mm motors.

This Fat Boy has flown three times, twice succesfully, and once semi-succesfully (see the crispy fried aft end):
  1. March-2004: Flew on three E9-6 motors and 24 A10 motors. GREAT upward flight. One A10 motor did not light. Chute got stuck in the reverse direction and it came down HARD. Repairs required.
  2. October-2004: Flew on three E9-6 motors and 24 A10 motors. Great flight! All motors lit.
  3. October-2012: Flew on three E9-6 motors and 24 A3-4 motors. This is equal to a G99. Perfect flight! All motors lit for a simmed altitude of 1113 ft.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: That's MR. Fat Boy To You

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This Fat Boy flies on two 29mm motors! From two F motors to two G motors!

This Fat Boy has flown once, and it will never fly again :-(
  1. April-2013: Tried to fly on two Aerotech G80T-7 motors. The maiden flight was a total disaster. I didn't have the right igniters and could not find any at flight time. Only one of the two G80 motors lit. It arc'd over hard and hit the ground at full power. It was destroyed beyond repair.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: Will Somebody Please Stop This Lunatic From Making Another Fat Boy!

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This Fat Boy flies on three 29mm motors! From three F motors to three G motors!

This Fat Boy has flown twice and neither flight was satisfactory:
  1. April-2013: Tried to fly on three Aerotech G40-7 motors. The maiden flight was not optimal. Only two of the three G40 motors lit. It arc'd over and did a land-shark. But, it was repairable.
  2. October 2013: This time I used the new 29mm Estes black Powder F15 motors in all three motor positions. These are minimal F's in every way possible, but they are still very cool. All three motors lit this time for a satisfactory ascent (it could have used more power). But, the chute got stuck and it hit the ground hard enough to break a fin. Dammit. This means that I must try again until it has a fully successful flight. And that means Spring Blast 2014. But for Spring Blast 2014, I'm going to try blue thunder composite Aerotech motors with Twiggy igniters from QuickBurst.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

Name: This Fat Boy Is Really A Cry For Help

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This Fat Boy flies on one 29mm motor and three air-started 24mm motors!

This Fat Boy has flown twice and neither flight was satisfactory:
  1. April-2013: Tried to fly on a central Aerotech G40-7 motor with three air-started Estes E9 motors. The maiden flight was not optimal. It went up on only the central motor. The three air-starts did not air start. I tried air-starting the three outboard E9 motors with canon fuse. The canon fuse was lit by the central motor. This method worked very well for me in the past on my Estes Saturn V, but it just did not work for me this time. It hit the ground harder than it was designed to. But, it too was repairable.
  2. October 2013: I used the new Estes black Powder 29mm F15 motor in the central motor position, with three outboard Estes E9s. But this time I started them all on the pad. All motors lit this time for a satisfactory ascent. This was a decent, if a bit underpowered, flight. But it still hit the ground hard enough to break a fin on this one as well. Double dammit. Bigger chute next time. This means that I must try again on this one too, also at Spring Blast 2014. This time I'm going to try a blue thunder composite Aerotech motor in the central position with a Twiggy igniter from QuickBurst, and three Estes E12 motors in the outboard pods. That should kick its butt.
Construction & Flight Photos/Videos, Simulation Information, and RockSim File Download

The Cluster Launch Controller

The Vatsaas brothers did a good write up of my launch controller for intermediate sized clusters. This controller is not powerful enough for Darth Maul's Revenge, but is perfect for these small Fat Boy clusters. For that unholy monster I built a far more powerful cluster controller, which I will document one of these days when I have time.