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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 69 motors that fit and appear to have enough thrust (703 motors didn't fit, 19 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:   Skipper (Madcow)
Owner: paul shepherdson
Body Diameter: 2.60in
Dry Weight: 1.21lb
MMT Diameter: 29.0mm
MMT Length: 10.00in
CD: 0.75

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 1.45lb 58ft/s 229ft/s 8.9G 649ft 6.3s 5s
OK Cesaroni F120 1.44lb 83ft/s 262ft/s 21.2G 687ft 6.2s 6s
OK Cesaroni F59 1.43lb 61ft/s 248ft/s 10.1G 709ft 6.5s 6s
OK AeroTech F42 1.38lb 61ft/s 231ft/s 10.2G 711ft 6.6s 5s
OK AeroTech F20 1.39lb 48ft/s 200ft/s 6.8G 722ft 6.9s 4s
OK AeroTech F50 1.40lb 63ft/s 289ft/s 10.7G 906ft 7.2s 6s
OK AeroTech F52 1.48lb 63ft/s 285ft/s 11.0G 933ft 7.3s 6s
OK AeroTech F25 1.41lb 54ft/s 242ft/s 8.2G 935ft 7.6s 5s
OK AeroTech F40 1.49lb 59ft/s 275ft/s 9.3G 1,004ft 7.7s 6s
warningsW Estes F50 1.39lb 65ft/s 316ft/s 11.6G 1,030ft 7.5s 6s
OK AeroTech G54 1.51lb 62ft/s 308ft/s 11.1G 1,036ft 7.6s 6s
OK Cesaroni G88 1.55lb 67ft/s 349ft/s 16.0G 1,064ft 7.6s 7s
OK AeroTech G104 1.51lb 80ft/s 355ft/s 17.1G 1,092ft 7.6s 7s
OK AeroTech G38 1.49lb 49ft/s 287ft/s 7.0G 1,138ft 8.3s 6s
OK AeroTech G74 1.40lb 65ft/s 374ft/s 13.4G 1,139ft 7.8s 7s
OK AeroTech G53 1.53lb 66ft/s 327ft/s 11.7G 1,180ft 8.1s 6s
OK Cesaroni G80 1.53lb 64ft/s 384ft/s 13.5G 1,211ft 8.0s 7s
OK AeroTech G77 1.57lb 59ft/s 395ft/s 11.6G 1,292ft 8.3s 7s
warningsW Estes G40 1.48lb 60ft/s 339ft/s 10.1G 1,311ft 8.5s 6s
OK AeroTech G40 1.48lb 60ft/s 339ft/s 10.1G 1,311ft 8.5s 6s
OK AeroTech G77 1.48lb 64ft/s 419ft/s 13.5G 1,322ft 8.2s 7s
OK AeroTech G79 1.56lb 69ft/s 408ft/s 13.2G 1,360ft 8.4s 7s
OK Cesaroni G83 1.53lb 69ft/s 416ft/s 13.7G 1,369ft 8.4s 7s
OK Cesaroni G250 1.52lb 113ft/s 498ft/s 41.4G 1,376ft 8.0s 8s
OK Cesaroni G68 1.55lb 59ft/s 395ft/s 12.3G 1,383ft 8.6s 7s
OK AeroTech G79 1.48lb 58ft/s 404ft/s 11.0G 1,385ft 8.6s 7s
OK Cesaroni G57 1.53lb 65ft/s 377ft/s 11.9G 1,405ft 8.7s 7s
OK Cesaroni G126 1.53lb 85ft/s 478ft/s 22.4G 1,461ft 8.3s 7s
OK AeroTech G76 1.53lb 85ft/s 403ft/s 21.1G 1,466ft 8.5s 7s
OK AeroTech G64 1.54lb 74ft/s 398ft/s 14.8G 1,513ft 8.7s 6s
OK Cesaroni G131 1.65lb 78ft/s 490ft/s 19.1G 1,518ft 8.5s 7s
OK AeroTech G75 1.50lb 67ft/s 438ft/s 14.1G 1,531ft 8.7s 7s
OK AeroTech G78 1.49lb 68ft/s 465ft/s 14.2G 1,554ft 8.7s 7s
OK AeroTech G125 1.49lb 82ft/s 528ft/s 21.1G 1,567ft 8.5s 7s
OK AeroTech G80 1.49lb 72ft/s 479ft/s 14.7G 1,631ft 8.8s 7s
OK Cesaroni G106 1.62lb 71ft/s 518ft/s 17.2G 1,675ft 9.0s 8s
OK KBA G135 1.71lb 75ft/s 542ft/s 19.2G 1,707ft 9.0s 8s
OK KBA G82 1.72lb 60ft/s 477ft/s 11.2G 1,725ft 9.4s 7s
OK AeroTech G75 1.72lb 56ft/s 473ft/s 9.2G 1,822ft 9.7s 7s
OK AeroTech H165 1.65lb 93ft/s 609ft/s 24.8G 1,860ft 9.1s 8s
OK Cesaroni H410 1.61lb 146ft/s 718ft/s 71.7G 1,871ft 8.8s 8s
OK Cesaroni G125 1.64lb 84ft/s 581ft/s 21.2G 1,874ft 9.2s 8s
OK Cesaroni H175 1.75lb 94ft/s 622ft/s 26.3G 1,877ft 9.1s 8s
OK Cesaroni G118 1.62lb 81ft/s 578ft/s 20.6G 1,886ft 9.3s 8s
OK Cesaroni H133 1.63lb 89ft/s 593ft/s 25.5G 1,913ft 9.2s 8s
OK Cesaroni H163 1.62lb 93ft/s 637ft/s 29.1G 1,929ft 9.2s 8s
OK AeroTech G138 1.54lb 82ft/s 670ft/s 23.0G 1,949ft 9.1s 8s
OK AeroTech H238 1.64lb 109ft/s 660ft/s 31.0G 1,959ft 9.1s 8s
OK AeroTech H128 1.66lb 91ft/s 619ft/s 23.5G 1,964ft 9.3s 8s
OK Cesaroni H90 1.57lb 78ft/s 558ft/s 21.2G 1,978ft 9.5s 8s
OK Cesaroni G54 1.64lb 77ft/s 436ft/s 15.6G 1,986ft 9.9s 7s
OK Cesaroni H87 1.66lb 70ft/s 546ft/s 16.4G 2,002ft 9.7s 8s
OK Cesaroni H123 1.71lb 73ft/s 612ft/s 17.3G 2,012ft 9.5s 8s
OK AeroTech H115 1.66lb 76ft/s 609ft/s 15.6G 2,043ft 9.5s 8s
OK Cesaroni H54 1.67lb 65ft/s 447ft/s 12.6G 2,072ft 10.2s 7s
OK Cesaroni H118 1.72lb 83ft/s 609ft/s 21.2G 2,114ft 9.7s 8s
OK AeroTech H97 1.82lb 67ft/s 574ft/s 12.5G 2,120ft 10.0s 8s
OK AeroTech H220 1.76lb 113ft/s 738ft/s 38.2G 2,192ft 9.5s 9s
OK AeroTech H210 1.75lb 104ft/s 748ft/s 31.4G 2,227ft 9.6s 9s
OK Cesaroni H151 1.73lb 92ft/s 688ft/s 25.4G 2,247ft 9.7s 8s
OK AeroTech H182 1.67lb 90ft/s 780ft/s 24.2G 2,300ft 9.6s 8s
OK Cesaroni H170 1.72lb 103ft/s 734ft/s 30.0G 2,311ft 9.7s 8s
OK Cesaroni H135 1.76lb 86ft/s 688ft/s 20.1G 2,346ft 10.0s 8s
OK AeroTech H180 1.77lb 104ft/s 763ft/s 31.3G 2,352ft 9.7s 8s
OK AeroTech H250 1.77lb 124ft/s 812ft/s 40.1G 2,358ft 9.6s 9s
OK AeroTech H195 1.64lb 114ft/s 836ft/s 33.8G 2,415ft 9.6s 8s
OK AeroTech H135 1.68lb 81ft/s 689ft/s 19.6G 2,502ft 10.2s 8s
OK Cesaroni H255 1.72lb 124ft/s 921ft/s 48.2G 2,627ft 9.8s 9s
warningsW,D Estes G80 1.49lb 12:1 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 (33ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (42ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (36ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (45ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (42ft/s)
failedG Estes F15 speed at end of launch guide too slow (30ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (42ft/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 (42ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (36ft/s)
failedG Apogee F10 speed at end of launch guide too slow (34ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (47ft/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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