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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 48 motors that fit and appear to have enough thrust (716 motors didn't fit, 46 motors failed safety checks). 92 motor had thrust curves available and 184 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:   Lil Goblin
Owner: Tim Cubbedge
Body Diameter: 2.64in
Dry Weight: 33.3oz
MMT Diameter: 29.0mm
MMT Length: 10.00in
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 Cesaroni F120 37.0oz 61ft/s 160ft/s 13.0G 379ft 5.0s 4s
OK AeroTech F67 36.1oz 49ft/s 170ft/s 7.6G 460ft 5.6s 5s
OK Cesaroni G88 38.7oz 48ft/s 221ft/s 9.8G 705ft 6.8s 6s
OK AeroTech G104 38.1oz 58ft/s 227ft/s 10.5G 738ft 6.8s 6s
OK AeroTech G79 38.8oz 49ft/s 269ft/s 8.2G 1,010ft 8.1s 7s
OK Cesaroni G83 38.4oz 50ft/s 273ft/s 8.4G 1,019ft 8.1s 7s
OK Cesaroni G250 38.3oz 84ft/s 319ft/s 26.3G 1,101ft 8.0s 7s
OK AeroTech G76 38.5oz 64ft/s 275ft/s 13.1G 1,135ft 8.4s 6s
OK Cesaroni G126 38.4oz 63ft/s 314ft/s 13.9G 1,165ft 8.3s 7s
OK AeroTech G64 38.6oz 54ft/s 272ft/s 9.1G 1,165ft 8.6s 6s
OK AeroTech G75 37.9oz 48ft/s 296ft/s 8.6G 1,210ft 8.7s 7s
OK Cesaroni G131 40.4oz 59ft/s 326ft/s 12.7G 1,238ft 8.6s 7s
OK AeroTech G78 37.7oz 48ft/s 309ft/s 8.8G 1,251ft 8.8s 7s
OK AeroTech G125 37.7oz 61ft/s 346ft/s 13.7G 1,316ft 8.7s 8s
OK AeroTech G80 37.8oz 51ft/s 323ft/s 8.9G 1,347ft 9.1s 7s
OK Cesaroni G106 39.9oz 49ft/s 350ft/s 10.8G 1,407ft 9.2s 8s
OK KBA G135 41.3oz 54ft/s 368ft/s 12.9G 1,460ft 9.2s 8s
OK Cesaroni G54 40.1oz 54ft/s 322ft/s 9.9G 1,690ft 10.3s 7s
OK Cesaroni G125 40.2oz 61ft/s 404ft/s 13.5G 1,695ft 9.8s 9s
OK Cesaroni G118 39.9oz 57ft/s 402ft/s 13.1G 1,697ft 9.9s 9s
OK AeroTech H165 40.4oz 67ft/s 420ft/s 16.1G 1,710ft 9.7s 9s
OK Cesaroni H175 42.0oz 71ft/s 428ft/s 19.3G 1,737ft 9.8s 9s
OK Cesaroni H133 40.0oz 64ft/s 415ft/s 16.2G 1,750ft 9.9s 9s
OK Cesaroni H54 40.7oz 48ft/s 333ft/s 7.9G 1,772ft 10.7s 7s
OK Cesaroni H87 40.5oz 49ft/s 395ft/s 10.4G 1,795ft 10.4s 8s
OK Cesaroni H90 39.0oz 58ft/s 400ft/s 13.3G 1,795ft 10.2s 8s
OK Cesaroni H163 39.9oz 69ft/s 439ft/s 18.6G 1,804ft 10.0s 9s
OK Cesaroni H410 39.7oz 109ft/s 476ft/s 46.7G 1,813ft 9.7s 9s
OK AeroTech H128 40.6oz 67ft/s 435ft/s 15.2G 1,839ft 10.1s 9s
OK AeroTech G138 38.5oz 58ft/s 455ft/s 16.1G 1,845ft 10.1s 9s
OK Cesaroni H123 41.3oz 56ft/s 432ft/s 11.2G 1,867ft 10.3s 9s
OK AeroTech H238 40.2oz 75ft/s 457ft/s 20.5G 1,873ft 10.0s 9s
OK AeroTech H115 40.5oz 54ft/s 436ft/s 10.0G 1,920ft 10.4s 9s
OK AeroTech H97 43.1oz 49ft/s 422ft/s 8.3G 1,953ft 10.8s 9s
OK Cesaroni H118 41.5oz 61ft/s 444ft/s 13.7G 1,999ft 10.5s 9s
OK AeroTech H220 42.1oz 83ft/s 525ft/s 25.2G 2,203ft 10.6s 10s
OK Cesaroni H151 41.7oz 70ft/s 503ft/s 16.5G 2,234ft 10.8s 9s
OK AeroTech H210 42.0oz 75ft/s 534ft/s 21.4G 2,249ft 10.8s 10s
OK Cesaroni H135 42.2oz 64ft/s 513ft/s 13.1G 2,339ft 11.2s 10s
OK Cesaroni H170 41.5oz 72ft/s 532ft/s 19.6G 2,346ft 11.0s 10s
OK AeroTech H182 40.6oz 67ft/s 560ft/s 16.1G 2,373ft 11.0s 10s
OK AeroTech H180 42.2oz 75ft/s 558ft/s 20.9G 2,429ft 11.1s 10s
OK AeroTech H250 42.3oz 90ft/s 587ft/s 26.5G 2,469ft 11.1s 10s
OK AeroTech H135 40.8oz 59ft/s 524ft/s 12.6G 2,518ft 11.6s 10s
OK AeroTech H169 40.4oz 82ft/s 575ft/s 19.9G 2,564ft 11.3s 10s
OK AeroTech H195 40.2oz 80ft/s 611ft/s 21.7G 2,590ft 11.3s 10s
OK Cesaroni H255 41.5oz 93ft/s 681ft/s 31.6G 2,888ft 11.6s 11s
warningsD Estes G80 37.8oz 7:1 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 (19ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (29ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (23ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (31ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (28ft/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 (31ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (31ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (27ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni F59 speed at end of launch guide too slow (42ft/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 (28ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (24ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (45ft/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 (44ft/s)
failedG Estes F50 speed at end of launch guide too slow (44ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (37ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G74 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (34ft/s)
failedG AeroTech G53 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G80 speed at end of launch guide too slow (45ft/s)
failedG Estes G40 speed at end of launch guide too slow (42ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G72 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (42ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (30ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (41ft/s)
failed5 AeroTech G8 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech G11 speed at end of launch guide too slow (21ft/s)
failedG AeroTech G12 speed at end of launch guide too slow (22ft/s)
failedG KBA G82 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (33ft/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.)

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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