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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 73 motors that fit and appear to have enough thrust (697 motors didn't fit, 21 motors failed safety checks). 92 motor had thrust curves available and 181 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:   Leviathan
Owner: Wayne Comfort
Body Diameter: 3.00in
Dry Weight: 22.6oz
MMT Diameter: 29.0mm
MMT Length: 11.00in
CD: 0.70

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 F62 26.4oz 53ft/s 197ft/s 7.7G 523ft 5.8s 5s
OK Cesaroni F120 26.3oz 77ft/s 228ft/s 18.5G 559ft 5.7s 5s
OK AeroTech F42 25.3oz 55ft/s 198ft/s 8.8G 573ft 6.0s 5s
OK Cesaroni F59 26.1oz 55ft/s 214ft/s 8.7G 574ft 6.0s 5s
OK AeroTech F50 25.6oz 59ft/s 249ft/s 9.2G 744ft 6.6s 5s
OK AeroTech F25 25.8oz 50ft/s 208ft/s 7.0G 762ft 7.1s 4s
OK AeroTech F52 26.9oz 60ft/s 247ft/s 9.6G 769ft 6.8s 5s
OK AeroTech F40 27.1oz 53ft/s 238ft/s 8.0G 828ft 7.2s 5s
warningsW Estes F50 25.5oz 59ft/s 273ft/s 10.0G 853ft 7.0s 6s
OK AeroTech G54 27.4oz 57ft/s 268ft/s 9.6G 859ft 7.1s 6s
OK Cesaroni G88 28.0oz 65ft/s 305ft/s 14.0G 888ft 7.1s 6s
OK AeroTech G104 27.4oz 74ft/s 310ft/s 15.0G 913ft 7.0s 6s
OK AeroTech G74 25.7oz 63ft/s 324ft/s 11.5G 950ft 7.3s 6s
OK AeroTech G53 27.7oz 62ft/s 285ft/s 10.2G 987ft 7.6s 6s
OK Cesaroni G80 27.7oz 59ft/s 335ft/s 11.8G 1,017ft 7.5s 6s
OK AeroTech G77 28.4oz 56ft/s 345ft/s 10.2G 1,088ft 7.8s 6s
warningsW Estes G40 26.9oz 55ft/s 295ft/s 8.8G 1,100ft 8.0s 6s
OK AeroTech G40 26.9oz 55ft/s 295ft/s 8.8G 1,100ft 8.0s 6s
OK AeroTech G77 26.9oz 59ft/s 365ft/s 11.8G 1,116ft 7.7s 6s
OK AeroTech G79 28.1oz 63ft/s 358ft/s 11.5G 1,150ft 7.9s 6s
OK Cesaroni G83 27.7oz 64ft/s 364ft/s 12.0G 1,157ft 7.8s 6s
OK Cesaroni G68 28.1oz 57ft/s 346ft/s 10.8G 1,167ft 8.0s 6s
OK Cesaroni G250 27.6oz 109ft/s 437ft/s 36.3G 1,170ft 7.5s 7s
OK AeroTech G79 27.0oz 55ft/s 352ft/s 9.6G 1,170ft 8.1s 6s
OK Cesaroni G57 27.7oz 59ft/s 329ft/s 10.4G 1,185ft 8.1s 6s
OK Cesaroni G126 27.7oz 79ft/s 419ft/s 19.6G 1,243ft 7.8s 7s
OK AeroTech G76 27.8oz 80ft/s 354ft/s 18.5G 1,246ft 8.0s 6s
OK AeroTech G64 27.9oz 69ft/s 349ft/s 13.0G 1,286ft 8.2s 6s
OK Cesaroni G131 29.7oz 74ft/s 432ft/s 16.9G 1,296ft 8.0s 7s
OK AeroTech G75 27.2oz 65ft/s 384ft/s 12.3G 1,304ft 8.2s 6s
OK AeroTech G78 27.0oz 63ft/s 406ft/s 12.4G 1,325ft 8.2s 7s
OK AeroTech G125 27.0oz 77ft/s 462ft/s 18.5G 1,340ft 8.0s 7s
OK AeroTech G80 27.1oz 68ft/s 419ft/s 12.8G 1,394ft 8.3s 7s
OK Cesaroni G106 29.2oz 66ft/s 457ft/s 15.2G 1,433ft 8.4s 7s
OK KBA G135 30.6oz 71ft/s 479ft/s 17.0G 1,463ft 8.4s 7s
OK KBA G82 30.7oz 56ft/s 422ft/s 9.9G 1,476ft 8.8s 7s
OK AeroTech G75 30.8oz 54ft/s 417ft/s 8.1G 1,562ft 9.1s 7s
OK AeroTech H165 29.7oz 85ft/s 539ft/s 21.9G 1,605ft 8.6s 8s
OK Cesaroni G125 29.5oz 80ft/s 513ft/s 18.7G 1,616ft 8.7s 7s
OK Cesaroni H410 29.0oz 136ft/s 634ft/s 63.3G 1,619ft 8.3s 8s
OK Cesaroni H175 31.3oz 90ft/s 552ft/s 23.4G 1,622ft 8.6s 8s
OK Cesaroni G118 29.2oz 76ft/s 510ft/s 18.2G 1,625ft 8.8s 7s
OK Cesaroni H133 29.3oz 84ft/s 524ft/s 22.5G 1,650ft 8.7s 7s
OK Cesaroni H163 29.2oz 89ft/s 563ft/s 25.8G 1,667ft 8.7s 8s
OK AeroTech G138 27.8oz 77ft/s 588ft/s 20.2G 1,686ft 8.6s 8s
OK AeroTech H238 29.5oz 96ft/s 584ft/s 27.4G 1,696ft 8.6s 8s
OK AeroTech H128 29.9oz 87ft/s 547ft/s 20.8G 1,699ft 8.8s 7s
OK Cesaroni G54 29.4oz 72ft/s 384ft/s 13.8G 1,706ft 9.4s 6s
OK Cesaroni H90 28.3oz 73ft/s 491ft/s 18.7G 1,707ft 9.0s 7s
OK Cesaroni H87 29.8oz 66ft/s 482ft/s 14.5G 1,727ft 9.2s 7s
OK Cesaroni H123 30.6oz 69ft/s 542ft/s 15.4G 1,739ft 9.0s 7s
OK AeroTech H115 29.8oz 72ft/s 538ft/s 13.8G 1,770ft 9.0s 7s
OK Cesaroni H54 30.0oz 64ft/s 394ft/s 11.1G 1,783ft 9.7s 6s
OK Cesaroni H118 30.8oz 79ft/s 540ft/s 18.8G 1,831ft 9.1s 7s
OK AeroTech H97 32.4oz 63ft/s 510ft/s 11.1G 1,835ft 9.5s 7s
OK Cesaroni H237 33.0oz 98ft/s 660ft/s 28.4G 1,882ft 9.0s 8s
OK AeroTech H220 31.4oz 105ft/s 657ft/s 34.1G 1,906ft 9.0s 8s
OK AeroTech H210 31.3oz 95ft/s 665ft/s 27.9G 1,937ft 9.0s 8s
OK Cesaroni H151 31.0oz 89ft/s 611ft/s 22.6G 1,954ft 9.2s 8s
OK AeroTech H182 29.9oz 86ft/s 690ft/s 21.4G 2,007ft 9.1s 8s
OK Cesaroni H170 30.8oz 99ft/s 652ft/s 26.8G 2,012ft 9.2s 8s
OK Cesaroni H160 32.2oz 83ft/s 647ft/s 19.7G 2,028ft 9.4s 8s
OK Cesaroni H135 31.5oz 82ft/s 611ft/s 17.9G 2,042ft 9.4s 8s
OK AeroTech H180 31.5oz 94ft/s 679ft/s 27.9G 2,052ft 9.2s 8s
OK AeroTech H250 31.6oz 111ft/s 723ft/s 35.8G 2,057ft 9.1s 8s
OK AeroTech H195 29.5oz 101ft/s 740ft/s 30.0G 2,116ft 9.1s 8s
OK AeroTech H135 30.1oz 77ft/s 612ft/s 17.3G 2,178ft 9.7s 8s
OK Cesaroni H194 32.6oz 95ft/s 720ft/s 30.1G 2,234ft 9.5s 8s
OK Cesaroni H200 32.3oz 100ft/s 731ft/s 31.4G 2,265ft 9.5s 8s
OK Cesaroni H255 30.8oz 121ft/s 820ft/s 43.0G 2,301ft 9.3s 8s
OK Cesaroni H53 32.7oz 53ft/s 461ft/s 9.3G 2,333ft 11.0s 7s
OK Cesaroni H140 32.4oz 98ft/s 673ft/s 26.3G 2,379ft 9.8s 8s
warningsW,D Estes G80 27.0oz 10:1 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 (29ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (40ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (33ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (42ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (39ft/s)
failedG Estes F15 speed at end of launch guide too slow (27ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (42ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (39ft/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (4:1)
failedG AeroTech F26 speed at end of launch guide too slow (38ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (33ft/s)
failedG Apogee F10 speed at end of launch guide too slow (30ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (45ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (45ft/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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