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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 155 motors that fit and appear to have enough thrust (623 motors didn't fit, 13 motors failed safety checks). 168 motor had thrust curves available and 344 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:   Formula 75
Owner: Kevin Katz
Body Diameter: 3.00in
Dry Weight: 3.50lb
MMT Diameter: 38.0mm
MMT Length: 30.00in
CD: 0.75

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 Contrail G130 4.64lb 73ft/s 133ft/s 25.0G 325ft 4.7s 4s
OK Contrail G300 4.70lb 124ft/s 147ft/s 38.0G 326ft 4.5s 4s
OK Contrail G234 4.70lb 115ft/s 165ft/s 25.1G 433ft 5.2s 5s
OK Loki G69 4.03lb 51ft/s 147ft/s 4.5G 438ft 5.7s 4s
OK AeroTech G67 3.94lb 48ft/s 152ft/s 4.2G 447ft 5.9s 4s
OK Loki G70 4.03lb 52ft/s 156ft/s 4.7G 492ft 6.1s 4s
OK Loki G80 4.06lb 55ft/s 165ft/s 5.2G 513ft 6.1s 5s
OK AeroTech G339 3.90lb 109ft/s 197ft/s 20.7G 533ft 5.7s 5s
OK Loki G94 4.03lb 59ft/s 176ft/s 6.4G 550ft 6.2s 5s
OK Contrail G123 4.63lb 71ft/s 184ft/s 16.3G 583ft 6.2s 5s
OK Contrail G100 4.63lb 66ft/s 181ft/s 7.9G 603ft 6.4s 5s
OK Loki G66 4.05lb 55ft/s 174ft/s 5.4G 618ft 6.8s 5s
OK Cesaroni G185 3.92lb 74ft/s 213ft/s 10.9G 634ft 6.4s 6s
OK Contrail H300 4.85lb 120ft/s 221ft/s 32.2G 713ft 6.6s 6s
OK Cesaroni G115 3.93lb 59ft/s 217ft/s 6.5G 718ft 7.0s 6s
OK Contrail H222 4.65lb 100ft/s 222ft/s 31.8G 727ft 6.7s 6s
OK Contrail H303 4.80lb 128ft/s 238ft/s 35.5G 794ft 6.9s 6s
OK Contrail H211 4.82lb 114ft/s 273ft/s 28.4G 1,051ft 8.0s 7s
OK Loki H100 4.24lb 58ft/s 269ft/s 6.8G 1,134ft 8.6s 7s
OK Contrail H246 4.82lb 108ft/s 298ft/s 23.8G 1,169ft 8.3s 7s
OK Contrail H121 4.85lb 68ft/s 272ft/s 11.3G 1,171ft 8.7s 7s
warningsW AeroTech H283 4.04lb 97ft/s 329ft/s 17.7G 1,225ft 8.4s 8s
OK AeroTech H148 4.18lb 72ft/s 312ft/s 9.4G 1,286ft 8.9s 7s
OK Contrail H141 4.85lb 78ft/s 301ft/s 11.3G 1,301ft 9.0s 7s
OK AeroTech H130 4.02lb 85ft/s 308ft/s 13.5G 1,313ft 8.9s 7s
OK Contrail H248 5.25lb 104ft/s 320ft/s 28.7G 1,350ft 8.9s 8s
OK AeroTech H669 4.06lb 153ft/s 385ft/s 60.4G 1,409ft 8.7s 8s
OK AeroTech H123 4.11lb 63ft/s 305ft/s 7.2G 1,411ft 9.5s 7s
OK AeroTech H100 4.08lb 57ft/s 309ft/s 6.2G 1,414ft 9.6s 7s
OK Loki H90 4.24lb 62ft/s 298ft/s 6.8G 1,429ft 9.7s 7s
OK Cesaroni H123 4.15lb 57ft/s 339ft/s 7.1G 1,459ft 9.7s 8s
OK Loki H144 4.24lb 81ft/s 337ft/s 12.2G 1,481ft 9.4s 8s
OK Loki H125 4.25lb 72ft/s 325ft/s 9.8G 1,485ft 9.6s 8s
OK Cesaroni H143 4.27lb 59ft/s 349ft/s 7.6G 1,496ft 9.7s 8s
OK AeroTech H219 4.08lb 92ft/s 375ft/s 15.2G 1,513ft 9.3s 8s
OK AeroTech H242 4.08lb 81ft/s 377ft/s 12.1G 1,588ft 9.6s 8s
OK AeroTech H112 4.34lb 50ft/s 317ft/s 4.7G 1,614ft 10.6s 7s
OK Loki H160 4.24lb 88ft/s 366ft/s 14.3G 1,615ft 9.6s 8s
OK Contrail H277 5.07lb 114ft/s 370ft/s 32.6G 1,646ft 9.7s 9s
OK Cesaroni H400 4.13lb 108ft/s 429ft/s 23.3G 1,670ft 9.5s 9s
OK Contrail H340 5.30lb 114ft/s 376ft/s 37.1G 1,674ft 9.8s 9s
OK Cesaroni H120 4.15lb 62ft/s 365ft/s 7.0G 1,681ft 10.3s 8s
OK Cesaroni H110 4.22lb 55ft/s 359ft/s 5.6G 1,713ft 10.5s 8s
OK Cesaroni H125 4.15lb 58ft/s 380ft/s 7.2G 1,733ft 10.4s 8s
OK Cesaroni H152 4.16lb 70ft/s 402ft/s 10.5G 1,832ft 10.4s 9s
OK Cesaroni H100 4.22lb 55ft/s 370ft/s 5.3G 1,845ft 11.0s 8s
OK AeroTech H178 4.21lb 67ft/s 423ft/s 10.5G 1,863ft 10.4s 9s
OK Cesaroni H225 3.93lb 86ft/s 449ft/s 13.8G 1,871ft 10.2s 9s
OK Contrail I500 5.26lb 146ft/s 429ft/s 42.4G 1,886ft 10.1s 9s
OK AeroTech H550 4.21lb 136ft/s 518ft/s 33.8G 2,076ft 10.3s 10s
OK AeroTech I218 4.32lb 89ft/s 462ft/s 13.9G 2,077ft 10.7s 9s
OK AeroTech H550 4.20lb 137ft/s 524ft/s 34.1G 2,081ft 10.3s 10s
warningsW Cesaroni H565 4.30lb 134ft/s 526ft/s 32.7G 2,100ft 10.4s 10s
OK AeroTech H170 4.23lb 72ft/s 449ft/s 9.9G 2,105ft 10.9s 9s
OK AeroTech H999 4.23lb 185ft/s 545ft/s 84.5G 2,117ft 10.2s 10s
OK Contrail I221 5.07lb 105ft/s 423ft/s 20.3G 2,117ft 10.9s 9s
OK AeroTech I180 4.35lb 100ft/s 437ft/s 17.8G 2,128ft 10.8s 9s
OK AeroTech I161 4.31lb 75ft/s 447ft/s 10.4G 2,187ft 11.1s 9s
OK Cesaroni I180 4.37lb 68ft/s 476ft/s 9.8G 2,218ft 11.2s 9s
OK AeroTech I140 4.28lb 67ft/s 440ft/s 8.4G 2,253ft 11.4s 9s
OK AeroTech I225 4.57lb 76ft/s 491ft/s 12.6G 2,303ft 11.2s 9s
OK AeroTech I245 4.30lb 106ft/s 502ft/s 20.6G 2,308ft 11.0s 10s
OK AeroTech I357 4.26lb 103ft/s 523ft/s 19.1G 2,327ft 11.0s 10s
OK Cesaroni I212 4.55lb 74ft/s 508ft/s 11.6G 2,348ft 11.4s 10s
OK Cesaroni I566 4.35lb 128ft/s 600ft/s 31.2G 2,434ft 10.9s 10s
OK AeroTech I154 4.58lb 61ft/s 445ft/s 7.3G 2,469ft 12.2s 9s
OK Contrail I747 5.35lb 201ft/s 560ft/s 78.8G 2,499ft 11.2s 11s
OK Contrail I250 5.10lb 100ft/s 507ft/s 24.2G 2,602ft 11.8s 10s
OK Cesaroni I195 4.42lb 75ft/s 536ft/s 11.1G 2,606ft 11.9s 10s
OK Cesaroni I345 4.37lb 103ft/s 602ft/s 19.1G 2,625ft 11.5s 10s
OK AeroTech I285 4.59lb 95ft/s 576ft/s 17.6G 2,656ft 11.7s 10s
OK Cesaroni I800 4.51lb 152ft/s 666ft/s 44.0G 2,670ft 11.3s 11s
OK Cesaroni I170 4.36lb 74ft/s 548ft/s 10.6G 2,687ft 12.1s 10s
OK Cesaroni I175 4.46lb 70ft/s 537ft/s 8.7G 2,699ft 12.2s 10s
OK AeroTech I1299 4.43lb 200ft/s 695ft/s 77.1G 2,723ft 11.2s 11s
OK Cesaroni I236 4.38lb 86ft/s 577ft/s 15.0G 2,734ft 11.9s 10s
OK AeroTech I305 4.78lb 96ft/s 589ft/s 18.4G 2,763ft 11.8s 10s
OK AeroTech I211 4.50lb 90ft/s 560ft/s 15.0G 2,801ft 12.0s 10s
OK Cesaroni I223 4.59lb 77ft/s 583ft/s 11.5G 2,804ft 12.1s 10s
OK AeroTech I195 4.76lb 91ft/s 553ft/s 16.1G 2,813ft 12.1s 10s
OK AeroTech I300 4.47lb 104ft/s 608ft/s 22.4G 2,821ft 11.8s 10s
OK Loki I316 4.69lb 113ft/s 625ft/s 23.1G 2,982ft 12.0s 11s
OK Cesaroni I287 4.83lb 86ft/s 648ft/s 15.0G 3,056ft 12.4s 11s
warningsW Loki I110 4.80lb 64ft/s 504ft/s 11.4G 3,095ft 13.3s 9s
OK Loki I405 4.70lb 142ft/s 679ft/s 37.5G 3,107ft 12.1s 11s
OK Loki I210 4.69lb 102ft/s 595ft/s 20.2G 3,121ft 12.5s 10s
OK Cesaroni I285 4.62lb 94ft/s 675ft/s 16.2G 3,232ft 12.6s 11s
OK Loki I377 4.73lb 128ft/s 689ft/s 30.3G 3,261ft 12.4s 11s
OK Loki I430 4.69lb 111ft/s 738ft/s 24.5G 3,274ft 12.4s 11s
OK Cesaroni I255 4.64lb 88ft/s 669ft/s 14.4G 3,281ft 12.8s 11s
OK AeroTech I327 4.88lb 103ft/s 706ft/s 18.9G 3,318ft 12.6s 11s
OK AeroTech I366 4.72lb 112ft/s 720ft/s 22.3G 3,328ft 12.5s 11s
OK AeroTech I364 4.99lb 95ft/s 700ft/s 17.9G 3,335ft 12.6s 11s
OK AMW I297 4.80lb 93ft/s 699ft/s 16.5G 3,341ft 12.7s 11s
OK AeroTech I59 4.57lb 62ft/s 340ft/s 7.3G 3,343ft 15.3s 7s
OK KBA I550 5.07lb 123ft/s 867ft/s 30.8G 3,357ft 12.1s 11s
OK Cesaroni I470 4.59lb 120ft/s 776ft/s 26.3G 3,359ft 12.4s 11s
OK Contrail I155 5.10lb 69ft/s 554ft/s 8.8G 3,375ft 13.8s 10s
OK Cesaroni I303 4.60lb 94ft/s 713ft/s 19.2G 3,396ft 12.7s 11s
OK KBA I301 5.10lb 90ft/s 754ft/s 17.3G 3,400ft 12.5s 11s
OK AeroTech I280 4.86lb 92ft/s 708ft/s 14.6G 3,440ft 12.9s 11s
OK Cesaroni I242 4.71lb 83ft/s 687ft/s 12.6G 3,461ft 13.1s 11s
OK AeroTech I435 4.64lb 138ft/s 783ft/s 35.6G 3,498ft 12.5s 11s
OK Cesaroni I350 5.22lb 97ft/s 740ft/s 16.3G 3,554ft 13.1s 11s
OK AeroTech I284 4.72lb 109ft/s 747ft/s 22.2G 3,589ft 12.9s 11s
OK Cesaroni I125 4.93lb 72ft/s 547ft/s 11.2G 3,616ft 14.2s 10s
OK AeroTech I500 4.77lb 116ft/s 845ft/s 26.2G 3,725ft 12.9s 12s
warningsW Cesaroni I540 4.82lb 124ft/s 875ft/s 28.7G 3,762ft 12.9s 12s
OK AeroTech I600 4.83lb 139ft/s 868ft/s 37.3G 3,769ft 12.8s 12s
OK Loki J396 5.16lb 97ft/s 809ft/s 22.8G 3,814ft 13.3s 12s
OK AeroTech I350 4.86lb 107ft/s 840ft/s 21.7G 3,838ft 13.2s 12s
OK AeroTech J420 4.93lb 115ft/s 830ft/s 24.5G 3,839ft 13.2s 12s
OK AeroTech J350 4.97lb 132ft/s 829ft/s 36.3G 3,843ft 13.0s 11s
OK KBA J740 5.10lb 148ft/s 909ft/s 40.5G 3,847ft 13.0s 12s
OK Cesaroni J381 5.02lb 107ft/s 820ft/s 21.7G 3,859ft 13.2s 11s
OK AeroTech J340 4.77lb 114ft/s 820ft/s 27.3G 3,869ft 13.1s 11s
OK Cesaroni J335 4.88lb 100ft/s 805ft/s 18.0G 3,873ft 13.3s 11s
OK Cesaroni I216 4.82lb 87ft/s 714ft/s 14.8G 3,916ft 13.8s 11s
OK Cesaroni J357 4.82lb 107ft/s 836ft/s 23.0G 3,924ft 13.3s 11s
OK Cesaroni J285 4.81lb 96ft/s 785ft/s 16.1G 3,927ft 13.5s 11s
OK Cesaroni J270 4.94lb 85ft/s 776ft/s 12.6G 3,944ft 13.7s 11s
OK Cesaroni J316 4.84lb 98ft/s 790ft/s 19.3G 3,964ft 13.6s 11s
OK AeroTech J425 4.89lb 101ft/s 891ft/s 19.7G 3,999ft 13.4s 12s
OK Cesaroni J400 5.05lb 108ft/s 863ft/s 20.3G 4,056ft 13.5s 12s
OK AeroTech J520 5.20lb 149ft/s 873ft/s 43.5G 4,057ft 13.3s 12s
OK Cesaroni J290 4.95lb 95ft/s 803ft/s 16.8G 4,068ft 13.7s 11s
OK AeroTech J500 4.94lb 137ft/s 920ft/s 35.1G 4,138ft 13.3s 12s
OK AeroTech J270 4.92lb 94ft/s 807ft/s 15.4G 4,164ft 13.8s 11s
OK Loki J528 5.14lb 141ft/s 944ft/s 43.7G 4,174ft 13.3s 12s
OK Cesaroni J94 4.96lb 56ft/s 526ft/s 6.4G 4,175ft 16.0s 9s
OK AeroTech J575 5.52lb 138ft/s 953ft/s 35.1G 4,226ft 13.3s 12s
OK AeroTech J435 4.88lb 127ft/s 958ft/s 30.8G 4,382ft 13.6s 12s
OK Cesaroni J410 5.12lb 110ft/s 923ft/s 21.4G 4,385ft 13.8s 12s
OK Cesaroni J330 5.05lb 105ft/s 881ft/s 19.5G 4,399ft 14.0s 12s
OK Cesaroni J425 5.04lb 121ft/s 939ft/s 28.9G 4,400ft 13.7s 12s
OK Loki J712 5.16lb 145ft/s 1,025ft/s 37.3G 4,404ft 13.5s 12s
OK Cesaroni J520 5.37lb 118ft/s 1,002ft/s 26.4G 4,556ft 13.9s 12s
OK Cesaroni J354 5.22lb 107ft/s 899ft/s 21.5G 4,583ft 14.1s 12s
OK Loki J320 5.16lb 104ft/s 886ft/s 22.1G 4,606ft 14.3s 12s
OK Cesaroni J580 5.80lb 117ft/s 1,014ft/s 25.0G 4,678ft 14.1s 13s
OK Loki J650 6.02lb 123ft/s 1,035ft/s 31.9G 4,837ft 14.3s 13s
OK AeroTech J825 5.43lb 166ft/s 1,188ft/s 47.8G 4,888ft 13.9s 13s
OK Cesaroni J595 5.41lb 133ft/s 1,109ft/s 36.8G 5,053ft 14.2s 13s
OK Cesaroni J600 5.50lb 123ft/s 1,144ft/s 28.7G 5,067ft 14.2s 13s
OK Cesaroni J394 5.57lb 96ft/s 1,027ft/s 16.9G 5,130ft 14.8s 12s
OK AeroTech J570 5.49lb 163ft/s 1,070ft/s 46.3G 5,202ft 14.3s 12s
OK Cesaroni J453 5.63lb 119ft/s 1,047ft/s 28.1G 5,213ft 14.6s 12s
OK Cesaroni J420 5.43lb 126ft/s 1,039ft/s 31.5G 5,253ft 14.6s 12s
OK Cesaroni J530 5.65lb 135ft/s 1,149ft/s 31.1G 5,497ft 14.7s 13s
OK Cesaroni J150 5.60lb 72ft/s 705ft/s 12.1G 5,505ft 16.8s 10s
OK AeroTech J510 5.88lb 136ft/s 1,140ft/s 38.8G 5,660ft 14.8s 12s
OK Loki J1000 6.02lb 174ft/s 1,326ft/s 51.3G 5,662ft 14.7s 13s
OK Loki J1026 6.08lb 158ft/s 1,385ft/s 43.8G 5,814ft 14.8s 14s
OK Loki K1127 6.08lb 165ft/s 1,358ft/s 49.9G 5,820ft 14.8s 13s
OK Loki K627 6.22lb 136ft/s 1,348ft/s 34.8G 6,726ft 15.8s 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 AeroTech G61 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (35ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (43ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (44ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (36ft/s)

G These simulations were run with a launch guide length of 9ft (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.)

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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