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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 52 motors that fit and appear to have enough thrust (703 motors didn't fit, 36 motors failed safety checks). 86 motor had thrust curves available and 171 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:   Estes Leviathan
Owner: John Sigmon
Body Diameter: 3.00in
Dry Weight: 2.20lb
MMT Diameter: 29.0mm
MMT Length: 10.00in
CD: 0.55

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 Cesaroni F120 2.43lb 64ft/s 152ft/s 12.3G 341ft 4.7s 4s
OK AeroTech F52 2.47lb 48ft/s 166ft/s 6.2G 499ft 6.0s 5s
OK Cesaroni G88 2.54lb 52ft/s 209ft/s 9.3G 633ft 6.5s 5s
OK AeroTech G104 2.50lb 60ft/s 214ft/s 9.9G 663ft 6.5s 6s
OK AeroTech G74 2.39lb 51ft/s 219ft/s 7.6G 687ft 6.8s 6s
OK AeroTech G53 2.52lb 49ft/s 200ft/s 6.7G 711ft 7.1s 5s
OK Cesaroni G80 2.52lb 49ft/s 232ft/s 7.8G 760ft 7.1s 6s
OK AeroTech G77 2.47lb 49ft/s 254ft/s 8.0G 874ft 7.6s 6s
OK AeroTech G79 2.55lb 51ft/s 254ft/s 7.8G 908ft 7.7s 6s
OK Cesaroni G57 2.52lb 49ft/s 237ft/s 6.9G 914ft 7.9s 6s
OK Cesaroni G83 2.52lb 54ft/s 257ft/s 7.9G 915ft 7.7s 6s
OK Cesaroni G250 2.51lb 89ft/s 302ft/s 25.0G 990ft 7.5s 7s
OK AeroTech G76 2.52lb 67ft/s 259ft/s 12.4G 1,020ft 8.0s 6s
OK Cesaroni G126 2.52lb 67ft/s 297ft/s 13.2G 1,047ft 7.9s 7s
OK AeroTech G64 2.53lb 56ft/s 255ft/s 8.6G 1,047ft 8.2s 6s
OK AeroTech G75 2.49lb 52ft/s 278ft/s 8.1G 1,086ft 8.3s 6s
OK Cesaroni G131 2.64lb 63ft/s 309ft/s 11.9G 1,115ft 8.2s 7s
OK AeroTech G78 2.48lb 53ft/s 291ft/s 8.3G 1,123ft 8.4s 7s
OK AeroTech G125 2.48lb 65ft/s 327ft/s 12.9G 1,181ft 8.3s 7s
OK AeroTech G80 2.48lb 56ft/s 304ft/s 8.4G 1,209ft 8.6s 7s
OK Cesaroni G106 2.61lb 54ft/s 331ft/s 10.3G 1,265ft 8.7s 7s
OK KBA G135 2.70lb 58ft/s 349ft/s 12.2G 1,315ft 8.8s 8s
OK Cesaroni G54 2.63lb 57ft/s 301ft/s 9.4G 1,520ft 9.8s 7s
OK Cesaroni G125 2.63lb 66ft/s 382ft/s 12.8G 1,525ft 9.3s 8s
OK Cesaroni G118 2.61lb 61ft/s 380ft/s 12.4G 1,526ft 9.4s 8s
OK AeroTech H165 2.64lb 71ft/s 397ft/s 15.3G 1,538ft 9.2s 8s
OK Cesaroni H175 2.74lb 72ft/s 406ft/s 18.2G 1,564ft 9.3s 8s
OK Cesaroni H133 2.62lb 69ft/s 392ft/s 15.5G 1,574ft 9.4s 8s
OK Cesaroni H54 2.66lb 51ft/s 312ft/s 7.5G 1,595ft 10.2s 7s
OK Cesaroni H90 2.56lb 61ft/s 377ft/s 12.6G 1,613ft 9.7s 8s
OK Cesaroni H87 2.65lb 54ft/s 371ft/s 9.9G 1,615ft 9.9s 8s
OK Cesaroni H163 2.61lb 74ft/s 415ft/s 17.7G 1,622ft 9.5s 8s
OK Cesaroni H410 2.60lb 119ft/s 452ft/s 44.4G 1,629ft 9.2s 9s
OK AeroTech H128 2.65lb 71ft/s 411ft/s 14.5G 1,655ft 9.6s 8s
OK AeroTech G138 2.53lb 62ft/s 429ft/s 15.2G 1,656ft 9.5s 8s
OK Cesaroni H123 2.70lb 60ft/s 408ft/s 10.6G 1,681ft 9.8s 8s
OK AeroTech H238 2.63lb 83ft/s 433ft/s 19.4G 1,684ft 9.5s 9s
OK AeroTech H115 2.65lb 58ft/s 411ft/s 9.5G 1,727ft 9.9s 8s
OK AeroTech H97 2.81lb 53ft/s 398ft/s 7.9G 1,760ft 10.2s 8s
OK Cesaroni H118 2.71lb 65ft/s 419ft/s 13.1G 1,800ft 10.0s 8s
OK AeroTech H220 2.75lb 88ft/s 498ft/s 24.1G 1,983ft 10.1s 9s
OK Cesaroni H151 2.72lb 76ft/s 476ft/s 15.8G 2,010ft 10.3s 9s
OK AeroTech H210 2.74lb 82ft/s 506ft/s 20.4G 2,023ft 10.2s 9s
OK Cesaroni H135 2.75lb 68ft/s 484ft/s 12.5G 2,105ft 10.6s 9s
OK Cesaroni H170 2.71lb 79ft/s 503ft/s 18.7G 2,111ft 10.4s 9s
OK AeroTech H182 2.66lb 73ft/s 529ft/s 15.3G 2,132ft 10.5s 9s
OK AeroTech H180 2.76lb 81ft/s 528ft/s 20.0G 2,186ft 10.5s 9s
OK AeroTech H250 2.76lb 100ft/s 556ft/s 25.3G 2,220ft 10.5s 10s
OK AeroTech H135 2.67lb 63ft/s 493ft/s 12.0G 2,265ft 11.0s 9s
OK AeroTech H195 2.63lb 89ft/s 577ft/s 20.7G 2,327ft 10.7s 10s
OK Cesaroni H255 2.71lb 96ft/s 644ft/s 30.2G 2,594ft 11.0s 10s
warningsW,D Estes G80 2.48lb 7:1 thrust/weight ratio (no data)

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

D No simulation data found for this motor.

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 Estes E16 speed at end of launch guide too slow (20ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (30ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (24ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (32ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (30ft/s)
failedG Estes F15 speed at end of launch guide too slow (17ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (33ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (33ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (29ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni F59 speed at end of launch guide too slow (45ft/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (3:1)
failedG AeroTech F26 speed at end of launch guide too slow (29ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (25ft/s)
failedG Apogee F10 speed at end of launch guide too slow (20ft/s)
failedG AeroTech F50 speed at end of launch guide too slow (47ft/s)
failedG Estes F50 speed at end of launch guide too slow (48ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (40ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (36ft/s)
failedG Estes G40 speed at end of launch guide too slow (45ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (45ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (31ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (45ft/s)
failedG KBA G82 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (36ft/s)

G These simulations were run with a launch guide length of 6ft (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.

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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