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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 123 motors that fit and appear to have enough thrust (615 motors didn't fit, 53 motors failed safety checks). 176 motor had thrust curves available and 362 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:   Forumla 75 38
Owner: Jeffrey Gortatowsky
Body Diameter: 3.00in
Dry Weight: 79.0oz
MMT Diameter: 38.0mm
MMT Length: 40.00in
CD: 0.60

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 G234 98.2oz 74ft/s 124ft/s 18.9G 269ft 4.2s 4s
OK AeroTech G339 85.4oz 68ft/s 141ft/s 14.9G 316ft 4.6s 4s
OK Contrail H300 100.6oz 85ft/s 168ft/s 24.6G 471ft 5.5s 5s
OK Contrail H222 97.3oz 67ft/s 166ft/s 24.1G 474ft 5.6s 5s
OK Contrail H303 99.8oz 90ft/s 180ft/s 27.1G 533ft 5.8s 5s
OK Contrail H211 100.2oz 72ft/s 207ft/s 21.6G 732ft 6.9s 6s
OK Contrail H246 100.1oz 69ft/s 227ft/s 18.1G 832ft 7.3s 6s
warningsW AeroTech H283 87.7oz 61ft/s 240ft/s 12.8G 851ft 7.4s 7s
OK AeroTech H130 87.4oz 54ft/s 224ft/s 9.7G 908ft 7.8s 6s
OK Contrail H141 100.6oz 51ft/s 228ft/s 8.5G 926ft 7.9s 6s
OK Contrail H248 107.0oz 70ft/s 249ft/s 22.3G 999ft 8.0s 7s
OK AeroTech H669 87.9oz 99ft/s 282ft/s 44.3G 1,037ft 7.9s 8s
OK Loki H144 90.9oz 53ft/s 250ft/s 8.8G 1,067ft 8.4s 7s
OK AeroTech H219 88.2oz 56ft/s 275ft/s 11.0G 1,109ft 8.4s 7s
OK AeroTech H242 88.3oz 51ft/s 277ft/s 8.7G 1,167ft 8.8s 7s
OK Loki H160 90.8oz 58ft/s 274ft/s 10.4G 1,202ft 8.8s 7s
OK Contrail H277 104.0oz 79ft/s 287ft/s 25.2G 1,263ft 8.9s 8s
OK Cesaroni H400 89.0oz 69ft/s 315ft/s 17.0G 1,280ft 8.8s 8s
OK Contrail H340 107.8oz 83ft/s 296ft/s 28.9G 1,293ft 9.0s 8s
OK Cesaroni H225 85.8oz 55ft/s 329ft/s 9.8G 1,458ft 9.6s 8s
OK Contrail I500 107.2oz 101ft/s 338ft/s 33.1G 1,530ft 9.5s 9s
OK AeroTech I218 92.1oz 56ft/s 349ft/s 10.2G 1,681ft 10.3s 9s
OK Contrail I221 104.0oz 69ft/s 335ft/s 15.6G 1,718ft 10.4s 9s
OK AeroTech H550 90.4oz 87ft/s 387ft/s 24.9G 1,732ft 10.0s 9s
OK AeroTech I180 92.6oz 65ft/s 337ft/s 13.1G 1,733ft 10.4s 8s
OK AeroTech H550 90.1oz 87ft/s 390ft/s 25.1G 1,746ft 10.0s 9s
warningsW Cesaroni H565 91.8oz 82ft/s 392ft/s 24.8G 1,760ft 10.1s 10s
OK AeroTech I161 91.9oz 48ft/s 341ft/s 7.6G 1,770ft 10.8s 9s
OK AeroTech H999 90.7oz 119ft/s 405ft/s 62.8G 1,795ft 10.1s 10s
OK AeroTech I225 96.1oz 49ft/s 378ft/s 9.5G 1,935ft 11.0s 9s
OK AeroTech I245 91.9oz 68ft/s 386ft/s 15.3G 1,961ft 10.9s 9s
OK AeroTech I357 91.1oz 67ft/s 397ft/s 14.0G 1,983ft 10.9s 10s
OK Contrail I290 110.2oz 60ft/s 392ft/s 15.3G 2,115ft 11.4s 10s
OK Contrail I400 111.6oz 85ft/s 413ft/s 27.6G 2,133ft 11.2s 10s
OK Cesaroni I566 92.6oz 81ft/s 451ft/s 23.8G 2,147ft 11.0s 10s
OK Contrail I747 108.6oz 135ft/s 444ft/s 61.9G 2,205ft 11.1s 11s
OK Contrail I250 104.5oz 68ft/s 405ft/s 18.7G 2,244ft 11.6s 10s
OK Cesaroni I345 92.9oz 64ft/s 459ft/s 14.1G 2,338ft 11.7s 11s
OK Cesaroni I170 92.8oz 48ft/s 424ft/s 7.8G 2,339ft 12.2s 10s
OK AeroTech I285 96.4oz 62ft/s 448ft/s 13.1G 2,363ft 11.8s 10s
OK Cesaroni I236 93.1oz 54ft/s 448ft/s 11.0G 2,432ft 12.1s 10s
OK Cesaroni I800 95.1oz 94ft/s 503ft/s 34.0G 2,455ft 11.6s 11s
OK Cesaroni I223 96.4oz 49ft/s 455ft/s 8.7G 2,509ft 12.4s 10s
OK AeroTech I211 95.0oz 56ft/s 441ft/s 11.1G 2,511ft 12.3s 10s
OK AeroTech I305 99.5oz 64ft/s 464ft/s 14.0G 2,522ft 12.1s 11s
OK AeroTech I195 99.2oz 59ft/s 440ft/s 12.2G 2,526ft 12.4s 10s
OK AeroTech I1299 93.9oz 131ft/s 524ft/s 57.8G 2,544ft 11.7s 11s
OK AeroTech I300 94.6oz 69ft/s 474ft/s 16.7G 2,572ft 12.2s 11s
OK Contrail I210 109.7oz 66ft/s 416ft/s 14.3G 2,592ft 12.7s 10s
OK Loki I316 98.0oz 74ft/s 497ft/s 17.5G 2,778ft 12.5s 11s
OK Cesaroni I287 100.3oz 55ft/s 511ft/s 11.6G 2,853ft 12.9s 11s
OK Loki I210 98.0oz 65ft/s 479ft/s 15.2G 2,896ft 13.0s 11s
OK Loki I405 98.2oz 92ft/s 539ft/s 28.4G 2,973ft 12.7s 12s
OK Contrail I333 111.8oz 72ft/s 504ft/s 27.0G 3,014ft 13.2s 12s
OK Cesaroni I285 96.8oz 59ft/s 536ft/s 12.1G 3,072ft 13.3s 11s
OK Cesaroni I255 97.2oz 56ft/s 534ft/s 10.8G 3,113ft 13.5s 11s
OK Loki I377 98.8oz 84ft/s 552ft/s 23.0G 3,142ft 13.1s 12s
OK Loki I430 98.0oz 73ft/s 578ft/s 18.5G 3,158ft 13.2s 12s
OK AeroTech I327 101.2oz 66ft/s 563ft/s 14.4G 3,214ft 13.4s 12s
OK AMW I297 99.8oz 59ft/s 558ft/s 12.5G 3,224ft 13.5s 12s
OK AeroTech I364 102.9oz 64ft/s 563ft/s 13.9G 3,240ft 13.5s 12s
OK AeroTech I366 98.6oz 71ft/s 573ft/s 16.8G 3,240ft 13.4s 12s
OK Cesaroni I303 96.6oz 62ft/s 568ft/s 14.4G 3,297ft 13.6s 12s
OK Contrail I307 107.6oz 81ft/s 535ft/s 22.7G 3,302ft 13.6s 12s
OK Cesaroni I470 96.5oz 78ft/s 608ft/s 19.8G 3,309ft 13.3s 12s
OK Cesaroni I242 98.4oz 54ft/s 554ft/s 9.4G 3,325ft 13.9s 12s
OK AeroTech I280 100.7oz 59ft/s 569ft/s 11.0G 3,338ft 13.8s 12s
OK Contrail I727 111.8oz 128ft/s 603ft/s 52.5G 3,438ft 13.5s 13s
OK KBA I301 104.6oz 58ft/s 609ft/s 13.2G 3,481ft 13.8s 12s
OK Cesaroni I350 106.6oz 63ft/s 598ft/s 12.6G 3,494ft 14.0s 12s
OK AeroTech I435 97.3oz 90ft/s 623ft/s 27.0G 3,506ft 13.6s 12s
OK KBA I550 104.1oz 75ft/s 677ft/s 24.0G 3,529ft 13.5s 12s
OK AeroTech I284 98.6oz 70ft/s 605ft/s 16.9G 3,579ft 13.9s 12s
OK Contrail J150 110.4oz 49ft/s 500ft/s 7.7G 3,704ft 15.2s 11s
OK AeroTech I500 99.3oz 76ft/s 672ft/s 19.9G 3,809ft 14.1s 13s
OK Loki J396 105.5oz 66ft/s 657ft/s 18.0G 3,857ft 14.4s 13s
OK Cesaroni I216 100.2oz 56ft/s 590ft/s 11.2G 3,876ft 14.8s 12s
warningsW Cesaroni I540 100.1oz 81ft/s 696ft/s 22.0G 3,877ft 14.1s 13s
OK AeroTech I600 100.2oz 89ft/s 694ft/s 28.4G 3,893ft 14.1s 13s
OK Contrail J246 109.4oz 69ft/s 567ft/s 16.2G 3,899ft 14.9s 12s
OK AeroTech J420 101.9oz 73ft/s 674ft/s 18.8G 3,925ft 14.4s 13s
OK AeroTech I350 100.7oz 67ft/s 679ft/s 16.7G 3,928ft 14.4s 13s
OK Cesaroni J335 101.1oz 67ft/s 656ft/s 13.6G 3,928ft 14.6s 13s
OK Cesaroni J381 103.3oz 72ft/s 667ft/s 16.6G 3,946ft 14.5s 13s
OK AeroTech J350 102.5oz 86ft/s 675ft/s 27.9G 3,956ft 14.3s 13s
OK Cesaroni J270 102.1oz 55ft/s 638ft/s 9.8G 3,961ft 14.9s 12s
OK KBA J740 104.5oz 91ft/s 720ft/s 32.6G 3,967ft 14.2s 13s
OK Cesaroni J285 100.0oz 61ft/s 643ft/s 12.4G 3,970ft 14.7s 12s
OK AeroTech J340 99.4oz 76ft/s 668ft/s 20.8G 3,977ft 14.4s 12s
OK Cesaroni J316 100.4oz 66ft/s 647ft/s 14.7G 3,992ft 14.7s 13s
OK Cesaroni J357 100.2oz 67ft/s 680ft/s 17.5G 4,025ft 14.6s 13s
OK AeroTech J425 101.3oz 63ft/s 718ft/s 15.3G 4,143ft 14.8s 13s
OK Cesaroni J290 102.3oz 61ft/s 665ft/s 12.8G 4,156ft 15.1s 13s
OK Cesaroni J400 103.8oz 70ft/s 707ft/s 15.8G 4,207ft 14.8s 13s
OK AeroTech J520 106.2oz 96ft/s 717ft/s 33.8G 4,241ft 14.7s 13s
OK AeroTech J270 101.6oz 61ft/s 671ft/s 11.7G 4,280ft 15.2s 13s
OK AeroTech J500 102.1oz 90ft/s 752ft/s 26.9G 4,377ft 14.8s 13s
OK Loki J528 105.3oz 93ft/s 768ft/s 33.9G 4,429ft 14.8s 14s
OK AeroTech J575 111.2oz 91ft/s 785ft/s 27.7G 4,559ft 15.0s 14s
OK Cesaroni J330 103.8oz 71ft/s 733ft/s 15.0G 4,621ft 15.5s 13s
OK Cesaroni J410 104.9oz 71ft/s 766ft/s 16.5G 4,647ft 15.4s 13s
OK AeroTech J435 101.0oz 83ft/s 789ft/s 23.6G 4,697ft 15.3s 14s
OK Cesaroni J425 103.7oz 76ft/s 777ft/s 22.2G 4,700ft 15.4s 13s
OK Loki J712 105.5oz 95ft/s 830ft/s 29.0G 4,748ft 15.2s 14s
OK Loki J320 105.5oz 67ft/s 748ft/s 17.1G 4,845ft 15.9s 13s
OK Cesaroni J354 106.4oz 69ft/s 763ft/s 16.6G 4,873ft 15.8s 13s
OK Cesaroni J520 109.0oz 80ft/s 831ft/s 20.6G 4,939ft 15.6s 14s
OK Cesaroni J580 115.8oz 75ft/s 847ft/s 20.9G 5,073ft 15.9s 14s
OK Loki J650 119.3oz 84ft/s 869ft/s 27.4G 5,269ft 16.0s 15s
OK AeroTech J825 109.9oz 108ft/s 979ft/s 37.5G 5,501ft 15.9s 15s
OK Cesaroni J394 112.1oz 66ft/s 881ft/s 13.6G 5,618ft 16.7s 14s
OK Cesaroni J150 112.5oz 49ft/s 632ft/s 9.4G 5,621ft 18.3s 12s
OK Cesaroni J595 109.5oz 89ft/s 942ft/s 28.9G 5,658ft 16.3s 15s
OK Cesaroni J600 111.0oz 83ft/s 962ft/s 22.5G 5,686ft 16.3s 15s
OK Cesaroni J453 113.0oz 82ft/s 902ft/s 22.2G 5,780ft 16.7s 14s
OK Cesaroni J420 109.8oz 86ft/s 891ft/s 24.7G 5,803ft 16.7s 14s
OK AeroTech J570 110.8oz 107ft/s 921ft/s 36.4G 5,831ft 16.4s 14s
OK Cesaroni J530 113.5oz 91ft/s 987ft/s 24.6G 6,222ft 16.9s 15s
OK AeroTech J510 117.1oz 92ft/s 998ft/s 30.9G 6,416ft 17.1s 15s
OK Loki J1000 119.3oz 114ft/s 1,122ft/s 41.2G 6,513ft 17.0s 16s
OK Loki J1026 120.3oz 104ft/s 1,173ft/s 35.9G 6,728ft 17.2s 16s
OK Loki K1127 120.3oz 108ft/s 1,160ft/s 41.2G 6,757ft 17.2s 16s
OK Loki K627 122.6oz 92ft/s 1,205ft/s 28.1G 7,833ft 18.4s 16s

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 (47ft/s)
failedG AeroTech G67 speed at end of launch guide too slow (29ft/s)
failedG Loki G69 speed at end of launch guide too slow (31ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (27ft/s)
failedG Loki G70 speed at end of launch guide too slow (32ft/s)
failedG Loki G94 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (27ft/s)
failedG Loki G80 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (22ft/s)
failedG Cesaroni G185 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (26ft/s)
failedG Loki G66 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (28ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (22ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (29ft/s)
failedG Contrail G123 speed at end of launch guide too slow (47ft/s)
failedG Contrail G100 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (20ft/s)
failedA Contrail G300 rocket doesn't reach a safe altitude (201ft)
failedG AeroTech H73 speed at end of launch guide too slow (26ft/s)
failedG Loki H100 speed at end of launch guide too slow (36ft/s)
failedG AeroTech H148 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H123 speed at end of launch guide too slow (39ft/s)
failedG Contrail H121 speed at end of launch guide too slow (45ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (35ft/s)
failedG Loki H90 speed at end of launch guide too slow (38ft/s)
failedG Loki H125 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (38ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni H152 speed at end of launch guide too slow (44ft/s)
failedG AeroTech H178 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (34ft/s)
failedG AeroTech H170 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (27ft/s)
failedG AeroTech I140 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni I180 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni I212 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni I195 speed at end of launch guide too slow (47ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (39ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (20ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (22ft/s)
failedG Cesaroni I175 speed at end of launch guide too slow (45ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (39ft/s)
failedG Loki I110 speed at end of launch guide too slow (41ft/s)
failedG Contrail I155 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni I125 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (35ft/s)

G These simulations were run with a launch guide length of 5ft (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.)

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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