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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 64 motors that fit and appear to have enough thrust (676 motors didn't fit, 51 motors failed safety checks). 113 motor had thrust curves available and 226 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 11
Owner: Glenn Iverson
Body Diameter: 2.63in
Dry Weight: 28.3oz
MMT Diameter: 29.0mm
MMT Length: 51.00in
CD: 0.73

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 32.0oz 56ft/s 187ft/s 15.2G 463ft 5.4s 5s
OK AeroTech G104 33.1oz 56ft/s 261ft/s 12.2G 840ft 7.1s 6s
OK Cesaroni G83 33.4oz 49ft/s 311ft/s 9.8G 1,116ft 8.1s 7s
OK Cesaroni G250 33.3oz 78ft/s 366ft/s 30.3G 1,170ft 7.9s 7s
OK AeroTech G76 33.5oz 61ft/s 310ft/s 15.2G 1,222ft 8.4s 6s
OK Cesaroni G126 33.4oz 61ft/s 358ft/s 16.1G 1,239ft 8.3s 7s
OK AeroTech G64 33.6oz 50ft/s 306ft/s 10.6G 1,257ft 8.6s 6s
OK Cesaroni G131 35.4oz 57ft/s 371ft/s 14.0G 1,305ft 8.5s 7s
OK AeroTech G125 32.7oz 58ft/s 395ft/s 15.5G 1,371ft 8.6s 8s
OK AeroTech G80 32.8oz 51ft/s 365ft/s 10.4G 1,412ft 8.9s 7s
OK Cesaroni G106 34.9oz 48ft/s 396ft/s 12.5G 1,463ft 9.0s 8s
OK KBA G135 36.3oz 52ft/s 416ft/s 14.6G 1,505ft 9.0s 8s
OK Cesaroni G125 35.2oz 59ft/s 453ft/s 15.5G 1,706ft 9.5s 8s
OK AeroTech H165 35.4oz 64ft/s 472ft/s 18.4G 1,709ft 9.4s 8s
OK Cesaroni G118 34.9oz 55ft/s 450ft/s 15.1G 1,712ft 9.5s 8s
OK Cesaroni H175 37.0oz 65ft/s 481ft/s 21.2G 1,731ft 9.4s 8s
OK Cesaroni G54 35.1oz 53ft/s 352ft/s 11.4G 1,743ft 10.1s 7s
OK Cesaroni H133 35.0oz 60ft/s 463ft/s 18.7G 1,752ft 9.5s 8s
OK Cesaroni H410 34.7oz 102ft/s 540ft/s 53.4G 1,773ft 9.2s 9s
OK RATT H70 40.7oz 52ft/s 379ft/s 11.0G 1,780ft 10.1s 7s
OK Cesaroni H163 34.9oz 68ft/s 492ft/s 21.4G 1,789ft 9.5s 8s
OK Cesaroni H90 34.0oz 56ft/s 444ft/s 15.4G 1,803ft 9.8s 8s
OK Cesaroni H87 35.5oz 48ft/s 436ft/s 12.0G 1,811ft 10.0s 8s
OK AeroTech G138 33.5oz 55ft/s 513ft/s 17.8G 1,822ft 9.6s 9s
OK AeroTech H128 35.6oz 63ft/s 485ft/s 17.5G 1,822ft 9.6s 8s
OK AeroTech H238 35.2oz 74ft/s 512ft/s 23.3G 1,840ft 9.5s 9s
OK Cesaroni H123 36.3oz 54ft/s 481ft/s 12.8G 1,856ft 9.9s 8s
OK AeroTech H115 35.5oz 52ft/s 483ft/s 11.5G 1,899ft 9.9s 8s
OK Cesaroni H118 36.5oz 60ft/s 489ft/s 15.7G 1,968ft 10.0s 8s
OK Cesaroni H237 38.7oz 76ft/s 583ft/s 25.5G 2,083ft 10.0s 9s
OK AeroTech H220 37.1oz 78ft/s 583ft/s 28.7G 2,112ft 10.0s 9s
OK KBA H130 53.3oz 55ft/s 445ft/s 13.8G 2,125ft 10.9s 9s
OK Cesaroni H151 36.7oz 63ft/s 553ft/s 18.9G 2,151ft 10.2s 9s
OK AeroTech H210 37.0oz 71ft/s 592ft/s 24.1G 2,152ft 10.1s 9s
OK Cesaroni H170 36.5oz 71ft/s 586ft/s 22.4G 2,238ft 10.3s 9s
OK Cesaroni H160 37.9oz 65ft/s 585ft/s 16.6G 2,244ft 10.4s 9s
OK Cesaroni H135 37.2oz 60ft/s 560ft/s 15.0G 2,248ft 10.5s 9s
OK AeroTech H182 35.6oz 61ft/s 620ft/s 18.2G 2,250ft 10.3s 9s
OK AeroTech H180 37.2oz 73ft/s 614ft/s 23.8G 2,299ft 10.3s 9s
OK AeroTech H250 37.3oz 84ft/s 648ft/s 30.2G 2,323ft 10.3s 9s
OK KBA H225 39.4oz 63ft/s 651ft/s 23.5G 2,397ft 10.6s 10s
OK AeroTech H135 35.8oz 55ft/s 567ft/s 14.5G 2,406ft 10.8s 9s
OK AeroTech H195 35.2oz 77ft/s 672ft/s 25.0G 2,414ft 10.4s 9s
OK Cesaroni H295 40.4oz 85ft/s 686ft/s 30.8G 2,423ft 10.5s 10s
OK Cesaroni H180 39.4oz 76ft/s 643ft/s 23.7G 2,523ft 10.8s 9s
OK Cesaroni H194 38.3oz 73ft/s 661ft/s 25.5G 2,530ft 10.7s 9s
OK Cesaroni H200 38.0oz 77ft/s 671ft/s 26.5G 2,572ft 10.7s 9s
OK Cesaroni H340 42.1oz 97ft/s 750ft/s 37.1G 2,639ft 10.7s 10s
OK Cesaroni H255 36.5oz 87ft/s 746ft/s 36.1G 2,653ft 10.7s 10s
OK Cesaroni H399 38.7oz 112ft/s 792ft/s 49.8G 2,667ft 10.7s 10s
OK Cesaroni H140 38.1oz 71ft/s 630ft/s 22.2G 2,674ft 11.1s 9s
OK Cesaroni H226 41.0oz 81ft/s 729ft/s 29.7G 2,839ft 11.1s 10s
OK AeroTech H268 40.9oz 81ft/s 766ft/s 28.1G 2,858ft 11.1s 10s
OK Cesaroni H159 40.4oz 61ft/s 689ft/s 15.7G 2,864ft 11.5s 10s
OK Cesaroni H233 39.9oz 82ft/s 763ft/s 29.7G 2,899ft 11.2s 10s
OK Cesaroni H255 39.5oz 92ft/s 795ft/s 36.6G 2,933ft 11.2s 10s
OK Cesaroni H160 39.6oz 80ft/s 692ft/s 27.8G 2,973ft 11.4s 9s
OK AeroTech I200 40.9oz 77ft/s 739ft/s 25.7G 2,997ft 11.4s 10s
OK Cesaroni I204 40.6oz 80ft/s 782ft/s 30.7G 3,140ft 11.5s 10s
OK AeroTech I205 39.4oz 74ft/s 802ft/s 32.2G 3,145ft 11.4s 10s
OK Cesaroni I243 42.4oz 87ft/s 839ft/s 36.1G 3,340ft 11.7s 10s
OK Cesaroni I224 41.4oz 97ft/s 840ft/s 36.7G 3,341ft 11.7s 10s
OK KBA J520 53.8oz 95ft/s 1,236ft/s 46.7G 4,555ft 13.1s 12s
warningsW,D Estes G80 32.7oz 9:1 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 (20ft/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 (30ft/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 (18ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (29ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (30ft/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 (40ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (25ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni F59 speed at end of launch guide too slow (39ft/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 (23ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (44ft/s)
failedG Apogee F10 speed at end of launch guide too slow (21ft/s)
failedG AeroTech F50 speed at end of launch guide too slow (43ft/s)
failedG Estes F50 speed at end of launch guide too slow (42ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (36ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (39ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G74 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G88 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G53 speed at end of launch guide too slow (46ft/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 (40ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (45ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (42ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G78 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (28ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (39ft/s)
failedG KBA G82 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni H54 speed at end of launch guide too slow (47ft/s)
failedG AeroTech H97 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (40ft/s)
failedG RATT I80 speed at end of launch guide too slow (39ft/s)
failedG RATT I90 speed at end of launch guide too slow (44ft/s)

G These simulations were run with a launch guide length of 4ft (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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