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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 27 motors that fit and appear to have enough thrust (754 motors didn't fit, 10 motors failed safety checks). 37 motor had thrust curves available and 66 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:   Black Brant II 5oz
Owner: Kenneth B Weaver
Body Diameter: 1.32in
Dry Weight: 4.8oz
MMT Diameter: 24.0mm
MMT Length: 5.71in
CD: 0.50

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
warningsW Estes D12 6.3oz 51ft/s 252ft/s 16.1G 910ft 7.7s 6s
OK Estes D11 6.4oz 49ft/s 254ft/s 13.8G 947ft 7.9s 6s
OK AeroTech D15 6.5oz 58ft/s 289ft/s 15.7G 1,068ft 7.9s 7s
OK Cesaroni E22 6.8oz 51ft/s 367ft/s 15.0G 1,371ft 8.8s 8s
OK Cesaroni E75 6.7oz 96ft/s 423ft/s 49.5G 1,421ft 8.5s 8s
OK Cesaroni E31 6.7oz 62ft/s 413ft/s 20.9G 1,521ft 9.0s 8s
warningsW Estes E12 6.9oz 52ft/s 354ft/s 16.2G 1,574ft 9.8s 7s
OK Estes E30 6.5oz 72ft/s 537ft/s 26.2G 2,003ft 9.8s 9s
OK AeroTech E20 6.6oz 65ft/s 495ft/s 18.1G 2,070ft 10.3s 9s
OK AeroTech E18 6.9oz 60ft/s 502ft/s 15.2G 2,267ft 10.7s 9s
OK AeroTech E28 6.8oz 77ft/s 583ft/s 25.9G 2,294ft 10.4s 9s
OK AeroTech E30 6.5oz 77ft/s 602ft/s 25.8G 2,315ft 10.4s 9s
OK AeroTech F44 6.5oz 82ft/s 686ft/s 35.4G 2,408ft 10.4s 9s
OK AeroTech E15 6.5oz 55ft/s 503ft/s 14.8G 2,410ft 11.1s 8s
OK AeroTech F30 7.3oz 62ft/s 639ft/s 17.9G 2,595ft 11.1s 10s
OK Cesaroni F51 7.4oz 80ft/s 694ft/s 31.3G 2,700ft 11.0s 10s
OK AeroTech F24 7.0oz 65ft/s 593ft/s 20.1G 2,709ft 11.3s 9s
OK AeroTech F39 7.0oz 82ft/s 698ft/s 29.8G 2,741ft 11.0s 10s
OK Cesaroni F70 7.4oz 92ft/s 761ft/s 45.4G 2,807ft 11.1s 10s
OK AeroTech F35 7.8oz 78ft/s 718ft/s 25.8G 3,002ft 11.6s 10s
OK AeroTech F32 7.1oz 81ft/s 743ft/s 29.1G 3,041ft 11.6s 10s
OK Cesaroni F50 8.1oz 73ft/s 744ft/s 29.2G 3,046ft 11.6s 10s
OK Cesaroni F240 8.1oz 158ft/s 981ft/s 129.0G 3,260ft 11.5s 11s
OK Cesaroni F79 8.6oz 89ft/s 859ft/s 38.6G 3,282ft 11.8s 11s
OK Cesaroni F85 8.2oz 99ft/s 950ft/s 44.4G 3,498ft 12.0s 11s
OK Cesaroni F30 8.4oz 69ft/s 740ft/s 22.2G 3,656ft 12.7s 10s
OK Cesaroni F51 8.2oz 88ft/s 871ft/s 35.8G 3,656ft 12.3s 11s

W Motor total weight unknown, lift-off Weight not accurate.

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 C11 speed at end of launch guide too slow (46ft/s)
failedG AeroTech D7 speed at end of launch guide too slow (34ft/s)
failedG AeroTech D9 speed at end of launch guide too slow (37ft/s)
failedG Estes E9 speed at end of launch guide too slow (41ft/s)
failedG AeroTech E7 speed at end of launch guide too slow (35ft/s)
failedG AeroTech E11 speed at end of launch guide too slow (41ft/s)
failedG AeroTech E12 speed at end of launch guide too slow (43ft/s)
failedG AeroTech E6 speed at end of launch guide too slow (35ft/s)
failedG Apogee E6 speed at end of launch guide too slow (47ft/s)
failedG AeroTech F12 speed at end of launch guide too slow (47ft/s)

G These simulations were run with a launch guide length of 3ft (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.)

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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