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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 55 motors that fit and appear to have enough thrust (691 motors didn't fit, 54 motors failed safety checks). 107 motor had thrust curves available and 215 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:   LOC Goblin
Owner: Brian Rennaker
Body Diameter: 102.0mm
Dry Weight: 1,429g
MMT Diameter: 29.0mm
MMT Length: 340.0mm
CD: 0.82

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 G104 1,565g 16m/s 44m/s 6.9G 102m 4.7s 4s
OK Cesaroni G250 1,570g 24m/s 65m/s 17.6G 155m 5.5s 5s
OK AeroTech G76 1,576g 17m/s 52m/s 8.7G 159m 5.9s 4s
OK AeroTech G64 1,580g 15m/s 51m/s 6.0G 163m 6.1s 4s
OK Cesaroni G126 1,574g 17m/s 62m/s 9.3G 164m 5.8s 5s
OK Cesaroni G131 1,629g 17m/s 65m/s 8.2G 176m 6.0s 5s
OK AeroTech G125 1,554g 17m/s 68m/s 8.8G 184m 6.1s 5s
OK Cesaroni G106 1,616g 15m/s 69m/s 7.3G 199m 6.5s 5s
OK KBA G135 1,655g 16m/s 74m/s 8.6G 209m 6.5s 5s
OK Cesaroni G54 1,622g 15m/s 59m/s 6.6G 240m 7.4s 4s
OK Cesaroni G118 1,617g 16m/s 79m/s 8.8G 242m 7.0s 6s
OK Cesaroni G125 1,624g 18m/s 80m/s 9.1G 242m 6.9s 6s
OK AeroTech H165 1,631g 19m/s 84m/s 10.8G 245m 6.8s 6s
OK Cesaroni H133 1,619g 18m/s 82m/s 11.1G 250m 7.0s 6s
OK Cesaroni H175 1,676g 20m/s 87m/s 12.5G 251m 6.9s 6s
OK Cesaroni H90 1,592g 16m/s 77m/s 8.9G 255m 7.2s 5s
OK Cesaroni H87 1,634g 15m/s 76m/s 7.0G 256m 7.4s 5s
OK Cesaroni H163 1,616g 20m/s 88m/s 12.7G 258m 7.0s 6s
OK Cesaroni H410 1,612g 32m/s 98m/s 31.8G 259m 6.7s 6s
OK AeroTech G138 1,577g 17m/s 90m/s 10.3G 261m 7.0s 6s
OK AeroTech H128 1,635g 19m/s 86m/s 10.3G 264m 7.1s 6s
OK Cesaroni H123 1,657g 16m/s 86m/s 7.6G 269m 7.3s 6s
OK AeroTech H238 1,625g 22m/s 92m/s 13.8G 269m 7.0s 6s
OK AeroTech H115 1,634g 16m/s 85m/s 6.7G 275m 7.4s 6s
OK Cesaroni H118 1,661g 18m/s 87m/s 9.4G 289m 7.4s 6s
OK Cesaroni H237 1,723g 23m/s 107m/s 15.2G 316m 7.4s 6s
OK AeroTech H220 1,679g 24m/s 107m/s 17.6G 319m 7.4s 6s
OK Cesaroni H151 1,667g 20m/s 100m/s 11.4G 324m 7.6s 6s
OK AeroTech H210 1,675g 22m/s 108m/s 14.5G 325m 7.5s 7s
OK KBA H130 2,138g 17m/s 89m/s 9.5G 332m 8.1s 6s
OK Cesaroni H135 1,680g 18m/s 101m/s 9.0G 340m 7.9s 6s
OK Cesaroni H170 1,661g 22m/s 106m/s 13.6G 340m 7.7s 6s
OK Cesaroni H160 1,701g 19m/s 106m/s 10.1G 341m 7.8s 6s
OK AeroTech H182 1,636g 20m/s 111m/s 10.7G 342m 7.8s 7s
OK AeroTech H180 1,681g 22m/s 112m/s 14.4G 353m 7.8s 6s
OK AeroTech H250 1,685g 27m/s 119m/s 18.5G 358m 7.7s 7s
OK AeroTech H135 1,641g 18m/s 101m/s 8.5G 364m 8.2s 6s
OK KBA H225 1,745g 20m/s 121m/s 14.3G 369m 8.0s 7s
OK AeroTech H195 1,626g 24m/s 121m/s 14.9G 374m 7.9s 7s
OK Cesaroni H295 1,771g 26m/s 129m/s 19.2G 380m 7.9s 7s
OK Cesaroni H180 1,743g 22m/s 119m/s 14.8G 395m 8.2s 7s
OK Cesaroni H194 1,713g 23m/s 122m/s 15.8G 395m 8.1s 7s
OK Cesaroni H200 1,703g 23m/s 123m/s 16.4G 403m 8.2s 7s
OK Cesaroni H255 1,661g 26m/s 137m/s 22.1G 418m 8.1s 7s
OK Cesaroni H140 1,706g 21m/s 115m/s 13.7G 419m 8.5s 6s
OK Cesaroni H399 1,723g 33m/s 148m/s 31.3G 423m 8.1s 7s
OK Cesaroni H159 1,772g 19m/s 127m/s 9.7G 455m 8.8s 7s
OK AeroTech H268 1,787g 25m/s 144m/s 17.7G 457m 8.5s 7s
OK Cesaroni H233 1,757g 25m/s 143m/s 18.7G 466m 8.5s 7s
OK Cesaroni H255 1,747g 27m/s 149m/s 23.1G 471m 8.5s 7s
OK Cesaroni H160 1,748g 24m/s 128m/s 17.5G 477m 8.8s 7s
OK AeroTech I200 1,787g 24m/s 138m/s 16.3G 484m 8.8s 7s
OK Cesaroni I204 1,778g 25m/s 146m/s 19.5G 511m 8.9s 7s
OK AeroTech I205 1,744g 23m/s 149m/s 20.3G 514m 8.9s 7s
warningsW,D Estes G80 1,554g 5:1 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 (3m/s)
failedG AeroTech E23 speed at end of launch guide too slow (7m/s)
failedG AeroTech E16 speed at end of launch guide too slow (5m/s)
failedG AeroTech F23 speed at end of launch guide too slow (8m/s)
failedG Cesaroni F36 speed at end of launch guide too slow (8m/s)
failedG AeroTech F27 speed at end of launch guide too slow (7m/s)
failedG Estes F15 speed at end of launch guide too slow (2m/s)
failedG AeroTech F37 speed at end of launch guide too slow (9m/s)
failedG AeroTech F62 speed at end of launch guide too slow (11m/s)
failedG Cesaroni F36 speed at end of launch guide too slow (8m/s)
failedG AeroTech F20 speed at end of launch guide too slow (8m/s)
failedG Cesaroni F32 speed at end of launch guide too slow (7m/s)
failedG AeroTech F42 speed at end of launch guide too slow (11m/s)
failedG Cesaroni F29 speed at end of launch guide too slow (7m/s)
failedG Cesaroni F31 speed at end of launch guide too slow (8m/s)
failedA Cesaroni F120 rocket doesn't reach a safe altitude (52m)
failedG Cesaroni F59 speed at end of launch guide too slow (12m/s)
failedG AeroTech F67 speed at end of launch guide too slow (14m/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (2:1)
failedG AeroTech F26 speed at end of launch guide too slow (7m/s)
failedG AeroTech F22 speed at end of launch guide too slow (6m/s)
failedG AeroTech F52 speed at end of launch guide too slow (12m/s)
failedG Apogee F10 speed at end of launch guide too slow (3m/s)
failedG AeroTech F50 speed at end of launch guide too slow (12m/s)
failedG Estes F50 speed at end of launch guide too slow (13m/s)
failedG AeroTech F25 speed at end of launch guide too slow (10m/s)
failedG AeroTech F40 speed at end of launch guide too slow (11m/s)
failedG AeroTech G54 speed at end of launch guide too slow (12m/s)
failedG AeroTech G74 speed at end of launch guide too slow (14m/s)
failedG Cesaroni G88 speed at end of launch guide too slow (14m/s)
failedG AeroTech G38 speed at end of launch guide too slow (9m/s)
failedG AeroTech G53 speed at end of launch guide too slow (13m/s)
failedG Cesaroni G80 speed at end of launch guide too slow (13m/s)
failedG Estes G40 speed at end of launch guide too slow (11m/s)
failedG AeroTech G77 speed at end of launch guide too slow (13m/s)
failedG AeroTech G77 speed at end of launch guide too slow (12m/s)
failedG Cesaroni G83 speed at end of launch guide too slow (14m/s)
failedG Cesaroni G57 speed at end of launch guide too slow (13m/s)
failedG Cesaroni G68 speed at end of launch guide too slow (12m/s)
failedG AeroTech G79 speed at end of launch guide too slow (12m/s)
failedG AeroTech G79 speed at end of launch guide too slow (14m/s)
failedG AeroTech G78 speed at end of launch guide too slow (14m/s)
failedG AeroTech G40 speed at end of launch guide too slow (11m/s)
failedG AeroTech G25 speed at end of launch guide too slow (8m/s)
failedG AeroTech G75 speed at end of launch guide too slow (14m/s)
failedG AeroTech G80 speed at end of launch guide too slow (14m/s)
failedG AeroTech G75 speed at end of launch guide too slow (12m/s)
failed5 AeroTech G8 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG KBA G82 speed at end of launch guide too slow (12m/s)
failedG Cesaroni G33 speed at end of launch guide too slow (7m/s)
failedG Cesaroni H54 speed at end of launch guide too slow (13m/s)
failedG AeroTech H97 speed at end of launch guide too slow (14m/s)
failedG Cesaroni H42 speed at end of launch guide too slow (10m/s)
failedG Cesaroni H53 speed at end of launch guide too slow (12m/s)

G These simulations were run with a launch guide length of 2m (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.

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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