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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 72 motors that fit and appear to have enough thrust (631 motors didn't fit, 88 motors failed safety checks). 160 motor had thrust curves available and 330 flight simulations were performed. Browse the motors that did and didn't work right here or download the results as a spreadsheet.

The Rocket

Rocket Name:   Executioner Extreme 5.38 - 38mm
Owner: Dan Miller
Body Diameter: 5.54in
Dry Weight: 6,100g
MMT Diameter: 38.0mm
MMT Length: 26.50in
CD: 0.30

Motors That Work

These motors fit your rocket and appear to have enough thrust to lift it safely. If thrust curves are available, a quick simulation has been run to give a rough idea of the performance of your rocket on this motor. We encourage you to run a more complete simulation with any motor you plan to use; see the simulators page for more info.

  Motor Weight Launch Velocity Accel Altitude Time Delay
OK AeroTech H550 6,423g 68ft/s 143ft/s 9.3G 345ft 4.9s 4s
OK AeroTech H550 6,416g 68ft/s 143ft/s 9.3G 347ft 4.9s 4s
warningsW Cesaroni H565 6,462g 67ft/s 146ft/s 9.3G 353ft 4.9s 4s
OK AeroTech H999 6,431g 91ft/s 154ft/s 24.5G 374ft 4.9s 5s
OK AeroTech I245 6,465g 52ft/s 134ft/s 5.5G 386ft 5.4s 4s
OK AeroTech I357 6,443g 49ft/s 138ft/s 5.0G 388ft 5.4s 4s
OK Cesaroni I566 6,484g 65ft/s 168ft/s 9.0G 465ft 5.6s 5s
OK Cesaroni I345 6,495g 49ft/s 166ft/s 5.1G 499ft 6.1s 5s
OK AeroTech I285 6,593g 49ft/s 162ft/s 4.8G 512ft 6.2s 5s
OK AeroTech I300 6,541g 50ft/s 172ft/s 6.3G 580ft 6.6s 5s
OK AeroTech I305 6,681g 50ft/s 172ft/s 5.3G 586ft 6.6s 5s
OK Cesaroni I800 6,557g 78ft/s 194ft/s 13.1G 586ft 6.2s 6s
OK AeroTech I1299 6,522g 105ft/s 205ft/s 22.6G 632ft 6.3s 6s
OK Loki I316 6,640g 58ft/s 188ft/s 6.7G 682ft 7.0s 5s
OK Loki I210 6,640g 49ft/s 175ft/s 5.8G 690ft 7.2s 5s
OK Loki I405 6,643g 69ft/s 210ft/s 11.3G 781ft 7.3s 6s
OK Loki I430 6,640g 56ft/s 222ft/s 7.2G 826ft 7.6s 6s
OK Loki I377 6,660g 62ft/s 214ft/s 9.1G 835ft 7.6s 6s
OK Cesaroni I303 6,600g 49ft/s 211ft/s 5.4G 845ft 7.9s 6s
OK AeroTech I327 6,728g 50ft/s 215ft/s 5.5G 847ft 7.9s 6s
OK AeroTech I366 6,656g 57ft/s 219ft/s 6.5G 858ft 7.8s 6s
OK AeroTech I364 6,778g 50ft/s 216ft/s 5.3G 865ft 7.9s 6s
OK Cesaroni I470 6,595g 60ft/s 234ft/s 7.6G 898ft 7.8s 7s
OK Cesaroni I350 6,882g 50ft/s 235ft/s 4.9G 983ft 8.5s 7s
OK KBA I301 6,826g 49ft/s 231ft/s 5.1G 987ft 8.5s 7s
OK AeroTech I284 6,656g 56ft/s 233ft/s 6.5G 1,004ft 8.5s 7s
OK AeroTech I435 6,618g 68ft/s 244ft/s 10.6G 1,006ft 8.2s 7s
OK KBA I550 6,812g 62ft/s 263ft/s 9.2G 1,070ft 8.5s 7s
OK AeroTech I500 6,676g 60ft/s 265ft/s 7.8G 1,149ft 8.8s 7s
OK Cesaroni J285 6,695g 48ft/s 247ft/s 4.7G 1,149ft 9.2s 7s
OK Cesaroni J335 6,727g 52ft/s 256ft/s 5.2G 1,161ft 9.2s 7s
OK Loki J396 6,852g 51ft/s 264ft/s 7.2G 1,169ft 9.0s 7s
OK Cesaroni J316 6,707g 50ft/s 252ft/s 5.6G 1,171ft 9.2s 7s
OK AeroTech I350 6,716g 54ft/s 266ft/s 6.5G 1,183ft 9.1s 7s
warningsW Cesaroni I540 6,698g 67ft/s 276ft/s 8.6G 1,197ft 8.9s 8s
OK AeroTech J420 6,750g 59ft/s 268ft/s 7.4G 1,200ft 9.1s 8s
OK Cesaroni J381 6,788g 55ft/s 265ft/s 6.6G 1,209ft 9.2s 7s
OK AeroTech J340 6,677g 57ft/s 262ft/s 8.2G 1,213ft 9.2s 7s
OK Cesaroni J357 6,701g 55ft/s 266ft/s 6.8G 1,219ft 9.3s 7s
OK AeroTech I600 6,702g 72ft/s 279ft/s 11.4G 1,221ft 9.0s 8s
OK Cesaroni J290 6,760g 48ft/s 258ft/s 4.9G 1,247ft 9.6s 7s
OK AeroTech J350 6,765g 67ft/s 272ft/s 11.4G 1,247ft 9.2s 8s
OK AeroTech J425 6,731g 51ft/s 281ft/s 6.0G 1,282ft 9.5s 8s
OK KBA J740 6,824g 81ft/s 297ft/s 13.5G 1,288ft 9.1s 8s
OK Cesaroni J400 6,802g 55ft/s 284ft/s 6.3G 1,342ft 9.7s 8s
OK AeroTech J520 6,872g 82ft/s 301ft/s 14.1G 1,446ft 9.7s 8s
OK AeroTech J500 6,754g 69ft/s 306ft/s 10.9G 1,478ft 9.9s 8s
OK Cesaroni J330 6,802g 55ft/s 297ft/s 5.9G 1,542ft 10.5s 8s
OK Loki J528 6,845g 76ft/s 321ft/s 14.2G 1,552ft 10.0s 9s
OK Cesaroni J410 6,835g 57ft/s 313ft/s 6.6G 1,594ft 10.5s 9s
OK AeroTech J435 6,724g 65ft/s 321ft/s 9.4G 1,640ft 10.5s 9s
OK Cesaroni J425 6,800g 60ft/s 318ft/s 9.0G 1,648ft 10.5s 9s
OK Loki J320 6,852g 53ft/s 306ft/s 6.9G 1,658ft 10.8s 8s
OK AeroTech J575 7,014g 78ft/s 336ft/s 11.7G 1,693ft 10.4s 9s
OK Cesaroni J354 6,878g 55ft/s 315ft/s 6.7G 1,709ft 10.9s 8s
OK Loki J712 6,852g 74ft/s 347ft/s 12.1G 1,738ft 10.5s 9s
OK Cesaroni J520 6,950g 62ft/s 350ft/s 8.6G 1,849ft 11.0s 9s
OK Cesaroni J580 7,144g 65ft/s 367ft/s 9.1G 1,964ft 11.3s 10s
OK Loki J650 7,243g 71ft/s 388ft/s 12.3G 2,133ft 11.6s 10s
OK Cesaroni J394 7,039g 52ft/s 375ft/s 6.1G 2,208ft 12.3s 10s
OK AeroTech J825 6,975g 89ft/s 422ft/s 16.2G 2,319ft 11.9s 11s
OK Cesaroni J595 6,966g 72ft/s 409ft/s 12.3G 2,371ft 12.2s 11s
OK Cesaroni J420 6,974g 65ft/s 390ft/s 10.5G 2,398ft 12.5s 10s
OK Cesaroni J600 7,006g 68ft/s 416ft/s 9.6G 2,400ft 12.3s 11s
OK Cesaroni J453 7,064g 64ft/s 396ft/s 9.5G 2,408ft 12.6s 10s
OK AeroTech J570 7,002g 85ft/s 410ft/s 15.8G 2,516ft 12.5s 10s
OK Cesaroni J530 7,077g 72ft/s 444ft/s 10.6G 2,795ft 13.2s 11s
OK AeroTech J510 7,180g 75ft/s 458ft/s 13.7G 2,980ft 13.6s 11s
OK Loki J1000 7,243g 98ft/s 515ft/s 18.7G 3,151ft 13.5s 12s
OK Loki J1026 7,272g 91ft/s 536ft/s 16.1G 3,309ft 13.9s 13s
OK Loki K1127 7,272g 93ft/s 538ft/s 18.8G 3,378ft 14.0s 13s
OK Loki K627 7,336g 79ft/s 581ft/s 12.8G 4,171ft 15.7s 13s

W Motor total weight unknown, lift-off Weight not accurate.

Don't like the units? Login to set your preferences. Don't understand the results? See the motor guide help page.

Motors That Fail

These motors fit your rocket, but failed one safety check or another. They may actually work, but you should use them only with caution. We encourage you to run a more complete simulation to verify flight safety; see the simulators page for more info.

  Motor Reason
failedG Contrail G130 speed at end of launch guide too slow (27ft/s)
failedG AeroTech G339 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G67 speed at end of launch guide too slow (12ft/s)
failedG Loki G69 speed at end of launch guide too slow (13ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (6ft/s)
failedG Contrail G234 speed at end of launch guide too slow (42ft/s)
failedG Loki G70 speed at end of launch guide too slow (15ft/s)
failedG Loki G94 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (8ft/s)
failedG Loki G80 speed at end of launch guide too slow (19ft/s)
failed5 Cesaroni G46 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG Cesaroni G185 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (15ft/s)
failedG Loki G66 speed at end of launch guide too slow (17ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (11ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (14ft/s)
failed5 Cesaroni G58 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG Cesaroni G115 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (14ft/s)
failedG Contrail G123 speed at end of launch guide too slow (29ft/s)
failedG Contrail G100 speed at end of launch guide too slow (27ft/s)
failed5 Cesaroni G50 average thrust fails 5:1 thrust/weight ratio (1:1)
failedA Contrail G300 rocket doesn't reach a safe altitude (33ft)
failedG Contrail H222 speed at end of launch guide too slow (45ft/s)
failedG Contrail H300 speed at end of launch guide too slow (48ft/s)
failedA Contrail H303 rocket doesn't reach a safe altitude (93ft)
failedG AeroTech H73 speed at end of launch guide too slow (12ft/s)
failedG Loki H100 speed at end of launch guide too slow (25ft/s)
failedG AeroTech H283 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H148 speed at end of launch guide too slow (32ft/s)
failedA Contrail H211 rocket doesn't reach a safe altitude (129ft)
failedG AeroTech H130 speed at end of launch guide too slow (37ft/s)
failedA AeroTech H669 rocket doesn't reach a safe altitude (179ft)
failedA Contrail H246 rocket doesn't reach a safe altitude (150ft)
failedG AeroTech H123 speed at end of launch guide too slow (25ft/s)
failedG Contrail H121 speed at end of launch guide too slow (31ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (23ft/s)
failedG AeroTech H242 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (25ft/s)
failedG AeroTech H219 speed at end of launch guide too slow (41ft/s)
failedG Loki H90 speed at end of launch guide too slow (24ft/s)
failedG Loki H144 speed at end of launch guide too slow (37ft/s)
failedG Loki H125 speed at end of launch guide too slow (32ft/s)
failedG Contrail H141 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (26ft/s)
failedA Cesaroni H400 rocket doesn't reach a safe altitude (221ft)
failedG Loki H160 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (26ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (18ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (22ft/s)
failedG Cesaroni H225 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H152 speed at end of launch guide too slow (31ft/s)
failedG AeroTech H178 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (21ft/s)
failedG AeroTech H170 speed at end of launch guide too slow (32ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (14ft/s)
failedG AeroTech I180 speed at end of launch guide too slow (47ft/s)
failedG AeroTech I161 speed at end of launch guide too slow (34ft/s)
failedG AeroTech I218 speed at end of launch guide too slow (42ft/s)
failedG AeroTech I140 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni I180 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni I212 speed at end of launch guide too slow (35ft/s)
failedG AeroTech I225 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni I195 speed at end of launch guide too slow (36ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni I170 speed at end of launch guide too slow (35ft/s)
failed5 AeroTech I49 average thrust fails 5:1 thrust/weight ratio (1:1)
failed5 Cesaroni I55 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG Cesaroni I175 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni I236 speed at end of launch guide too slow (41ft/s)
failedG AeroTech I195 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni I223 speed at end of launch guide too slow (37ft/s)
failedG AeroTech I211 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni I287 speed at end of launch guide too slow (43ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (28ft/s)
failedG Loki I110 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni I285 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni I255 speed at end of launch guide too slow (44ft/s)
failedG AMW I297 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni I242 speed at end of launch guide too slow (40ft/s)
failedG AeroTech I280 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni I125 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni I216 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (24ft/s)
failedG Cesaroni J270 speed at end of launch guide too slow (42ft/s)
failedG AeroTech J270 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni J150 speed at end of launch guide too slow (36ft/s)

G These simulations were run with a launch guide length of 8ft (rod, rail or tower). If this is not correct, launch guide lengths can be specified for your saved rockets. (The minimum velocity required is approximately 15m/s or 50ft/s.)

5 The 5:1 thrust-to-weight ratio check is a useful rule of thumb, but it does break down for motors with unusual thrust curves. For example, motors with a high initial thrust and a long tail-off may fail this test but still be safe for use.

A The minimum altitude check is used to ensure that the rocket flies high enough to ensure time for a safe recovery. In addition, many barometric altimeters require a minimum altitude to detect lift-off. (The minimum altitude is 10m or 33ft for an A motor and doubles for each impulse class).

Download the Results

The data is presented in a compact form in the tables above, broken down by motors that worked and those that did not. If you would like to analyze the data further, this section provides download links for files in a generic spreadsheet format (comma-separated value, or CSV) that can be opened with almost any spreadsheet program.

CSV Excel   Download full details of the simulation runs with the various motors:
that worked, that failed, or all of them.
 
RockSim   Download the list of motors that fit your rocket into a batch for use with SMARTSim. (See the Simulators page for more info.)

You should download these files to your machine and then open them. Normally, clicking the link will prompt you to do this. However, if your browser insists on opening the file as plain text, you can right-click (control-click on the Mac) on the link and chose Save File As (or similar).

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