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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 96 motors that fit and appear to have enough thrust (698 motors didn't fit, 17 motors failed safety checks). 111 motor had thrust curves available and 221 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:   Centurion XL
Owner: Jim Lane
Body Diameter: 3.00in
Dry Weight: 22.0oz
MMT Diameter: 29.0mm
MMT Length: 14.00in
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 Cesaroni F36 25.7oz 49ft/s 158ft/s 10.1G 372ft 5.0s 4s
OK AeroTech F37 25.9oz 48ft/s 167ft/s 5.4G 464ft 5.8s 4s
OK Cesaroni F36 25.6oz 50ft/s 182ft/s 5.0G 499ft 5.9s 4s
OK AeroTech F23 24.9oz 50ft/s 162ft/s 6.0G 520ft 6.1s 4s
OK AeroTech F62 25.8oz 62ft/s 202ft/s 7.9G 537ft 5.8s 5s
OK Cesaroni F120 25.7oz 93ft/s 234ft/s 18.9G 572ft 5.8s 5s
OK AeroTech F42 24.7oz 64ft/s 203ft/s 9.0G 588ft 6.1s 5s
OK Cesaroni F59 25.5oz 64ft/s 219ft/s 9.0G 588ft 6.0s 5s
OK AeroTech F20 24.8oz 50ft/s 174ft/s 6.0G 593ft 6.4s 4s
OK AeroTech F67 24.8oz 77ft/s 249ft/s 11.4G 673ft 6.2s 5s
OK AeroTech F50 25.0oz 70ft/s 255ft/s 9.4G 759ft 6.7s 5s
OK AeroTech F25 25.2oz 58ft/s 212ft/s 7.2G 779ft 7.1s 4s
OK AeroTech F52 26.3oz 71ft/s 252ft/s 9.8G 784ft 6.8s 5s
OK AeroTech F40 26.5oz 62ft/s 243ft/s 8.2G 844ft 7.2s 5s
OK Estes F50 25.0oz 70ft/s 278ft/s 10.2G 867ft 7.0s 6s
OK AeroTech G54 26.8oz 68ft/s 273ft/s 9.9G 874ft 7.1s 6s
OK Cesaroni G88 27.4oz 74ft/s 311ft/s 14.3G 902ft 7.1s 6s
OK AeroTech G104 26.8oz 89ft/s 316ft/s 15.3G 926ft 7.0s 6s
OK AeroTech G38 26.4oz 54ft/s 253ft/s 6.2G 959ft 7.8s 5s
OK AeroTech G74 25.1oz 76ft/s 331ft/s 11.8G 964ft 7.3s 6s
OK AeroTech G53 27.1oz 72ft/s 290ft/s 10.5G 1,002ft 7.6s 6s
OK Cesaroni G80 27.1oz 70ft/s 342ft/s 12.1G 1,030ft 7.5s 6s
OK AeroTech G77 27.8oz 66ft/s 352ft/s 10.4G 1,101ft 7.8s 6s
OK AeroTech G40 26.3oz 64ft/s 300ft/s 9.0G 1,115ft 8.0s 6s
OK Estes G40 26.3oz 64ft/s 300ft/s 9.0G 1,115ft 8.0s 6s
OK AeroTech G77 26.3oz 71ft/s 372ft/s 12.0G 1,129ft 7.7s 6s
OK AeroTech G72 26.6oz 68ft/s 378ft/s 12.3G 1,161ft 7.8s 6s
OK AeroTech G79 27.5oz 76ft/s 364ft/s 11.8G 1,162ft 7.9s 6s
OK Cesaroni G83 27.1oz 77ft/s 371ft/s 12.3G 1,169ft 7.8s 6s
OK Cesaroni G250 27.0oz 126ft/s 446ft/s 37.1G 1,179ft 7.5s 7s
OK Cesaroni G68 27.5oz 67ft/s 352ft/s 11.0G 1,181ft 8.0s 6s
OK AeroTech G79 26.4oz 65ft/s 359ft/s 9.8G 1,183ft 8.0s 6s
OK Cesaroni G57 27.1oz 70ft/s 335ft/s 10.7G 1,199ft 8.1s 6s
OK Cesaroni G126 27.1oz 92ft/s 428ft/s 20.1G 1,253ft 7.8s 7s
OK AeroTech G76 27.2oz 92ft/s 360ft/s 19.0G 1,258ft 8.0s 6s
OK AeroTech G75 26.7oz 80ft/s 406ft/s 13.0G 1,261ft 8.0s 7s
OK AeroTech G64 27.3oz 83ft/s 354ft/s 13.3G 1,298ft 8.2s 6s
OK Cesaroni G131 29.1oz 90ft/s 440ft/s 17.3G 1,306ft 8.0s 7s
OK AeroTech G78 26.4oz 76ft/s 414ft/s 12.7G 1,335ft 8.2s 7s
OK AeroTech G125 26.4oz 90ft/s 471ft/s 18.9G 1,348ft 8.0s 7s
OK AeroTech G80 26.5oz 80ft/s 426ft/s 13.1G 1,404ft 8.3s 7s
OK Cesaroni G106 28.6oz 75ft/s 465ft/s 15.5G 1,443ft 8.4s 7s
OK KBA G135 30.0oz 82ft/s 488ft/s 17.3G 1,472ft 8.4s 7s
OK KBA G82 30.1oz 66ft/s 428ft/s 10.1G 1,487ft 8.8s 7s
OK AeroTech G75 30.2oz 63ft/s 424ft/s 8.3G 1,573ft 9.1s 7s
OK AeroTech H165 29.1oz 101ft/s 548ft/s 22.3G 1,611ft 8.5s 7s
OK Cesaroni H410 28.4oz 161ft/s 646ft/s 64.6G 1,622ft 8.2s 8s
OK Cesaroni G125 28.9oz 93ft/s 522ft/s 19.1G 1,623ft 8.7s 7s
OK Cesaroni H175 30.7oz 105ft/s 562ft/s 23.8G 1,628ft 8.6s 8s
OK Cesaroni G118 28.6oz 87ft/s 518ft/s 18.6G 1,632ft 8.7s 7s
OK Cesaroni H133 28.7oz 98ft/s 532ft/s 23.0G 1,656ft 8.7s 7s
OK Cesaroni H163 28.6oz 104ft/s 572ft/s 26.3G 1,672ft 8.6s 8s
OK AeroTech G138 27.2oz 89ft/s 599ft/s 20.6G 1,690ft 8.6s 8s
OK AeroTech H238 28.9oz 115ft/s 594ft/s 28.0G 1,700ft 8.6s 8s
OK AeroTech H128 29.3oz 100ft/s 556ft/s 21.2G 1,704ft 8.7s 7s
OK Cesaroni H90 27.7oz 88ft/s 499ft/s 19.1G 1,715ft 8.9s 7s
OK Cesaroni G54 28.8oz 82ft/s 390ft/s 14.1G 1,718ft 9.4s 6s
OK Cesaroni H87 29.2oz 78ft/s 489ft/s 14.8G 1,735ft 9.2s 7s
OK Cesaroni H123 30.0oz 84ft/s 550ft/s 15.7G 1,745ft 9.0s 7s
OK AeroTech H115 29.2oz 82ft/s 546ft/s 14.1G 1,775ft 9.0s 7s
OK Cesaroni H54 29.4oz 72ft/s 399ft/s 11.4G 1,795ft 9.7s 6s
OK Cesaroni H118 30.2oz 91ft/s 547ft/s 19.2G 1,837ft 9.1s 7s
OK AeroTech H97 31.8oz 73ft/s 516ft/s 11.3G 1,842ft 9.4s 7s
OK Cesaroni H237 32.4oz 115ft/s 671ft/s 29.0G 1,883ft 8.9s 8s
OK AeroTech H220 30.8oz 120ft/s 667ft/s 34.8G 1,907ft 8.9s 8s
OK AeroTech H210 30.7oz 114ft/s 675ft/s 28.4G 1,938ft 9.0s 8s
OK Cesaroni H151 30.4oz 104ft/s 619ft/s 23.1G 1,957ft 9.1s 8s
OK Cesaroni H42 30.5oz 53ft/s 387ft/s 7.8G 1,985ft 10.8s 6s
OK AeroTech H182 29.3oz 101ft/s 700ft/s 21.8G 2,007ft 9.1s 8s
OK Cesaroni H170 30.2oz 109ft/s 662ft/s 27.3G 2,013ft 9.1s 8s
OK Cesaroni H160 31.6oz 97ft/s 656ft/s 20.1G 2,030ft 9.3s 8s
OK Cesaroni H135 30.9oz 94ft/s 619ft/s 18.3G 2,045ft 9.4s 8s
OK AeroTech H180 30.9oz 112ft/s 689ft/s 28.5G 2,052ft 9.2s 8s
OK AeroTech H250 31.0oz 134ft/s 733ft/s 36.5G 2,056ft 9.1s 8s
OK KBA H130 47.0oz 79ft/s 487ft/s 15.8G 2,057ft 10.3s 8s
OK AeroTech H195 28.9oz 122ft/s 750ft/s 30.6G 2,113ft 9.1s 8s
OK AeroTech H169 29.1oz 115ft/s 689ft/s 27.9G 2,123ft 9.2s 8s
OK Cesaroni H295 34.1oz 131ft/s 780ft/s 36.2G 2,128ft 9.2s 8s
OK KBA H225 33.1oz 97ft/s 736ft/s 27.1G 2,136ft 9.4s 8s
OK AeroTech H135 29.5oz 89ft/s 619ft/s 17.7G 2,180ft 9.6s 8s
OK Cesaroni H194 32.0oz 113ft/s 730ft/s 30.7G 2,233ft 9.4s 8s
OK Cesaroni H180 33.1oz 114ft/s 712ft/s 28.5G 2,240ft 9.6s 8s
OK Cesaroni H200 31.7oz 118ft/s 740ft/s 32.0G 2,263ft 9.4s 8s
OK Cesaroni H399 32.4oz 169ft/s 900ft/s 59.8G 2,287ft 9.3s 9s
OK Cesaroni H255 30.2oz 140ft/s 831ft/s 43.9G 2,296ft 9.3s 8s
OK Cesaroni H53 32.1oz 62ft/s 465ft/s 9.5G 2,343ft 11.0s 7s
OK Cesaroni H140 31.8oz 107ft/s 681ft/s 26.8G 2,379ft 9.8s 8s
OK AeroTech H268 34.6oz 125ft/s 841ft/s 33.2G 2,472ft 9.7s 9s
OK Cesaroni H233 33.6oz 122ft/s 833ft/s 35.5G 2,503ft 9.7s 8s
OK Cesaroni H255 33.2oz 132ft/s 870ft/s 43.8G 2,519ft 9.7s 8s
OK Cesaroni H159 34.1oz 98ft/s 732ft/s 18.7G 2,523ft 10.1s 8s
OK AeroTech I200 34.6oz 118ft/s 794ft/s 30.6G 2,601ft 9.9s 8s
OK Cesaroni H160 33.3oz 123ft/s 739ft/s 33.3G 2,607ft 10.0s 8s
OK AeroTech I205 33.1oz 113ft/s 855ft/s 38.6G 2,696ft 9.9s 8s
OK Cesaroni I204 34.3oz 125ft/s 833ft/s 36.5G 2,701ft 10.0s 8s
warningsD Estes G80 26.5oz 11:1 thrust/weight ratio (no data)

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 (34ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (46ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (39ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (46ft/s)
failedG Estes F15 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (46ft/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 (45ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (39ft/s)
failedG Apogee F10 speed at end of launch guide too slow (35ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G8 speed at end of launch guide too slow (13ft/s)
failedG AeroTech G11 speed at end of launch guide too slow (35ft/s)
failedG AeroTech G12 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (43ft/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.

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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