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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 (716 motors didn't fit, 20 motors failed safety checks). 73 motor had thrust curves available and 140 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:   MadCow Hawk
Owner: Chris Wittig
Body Diameter: 2.60in
Dry Weight: 21.0oz
MMT Diameter: 29.0mm
MMT Length: 8.50in
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 AeroTech F62 24.8oz 55ft/s 216ft/s 8.3G 640ft 6.4s 5s
OK Cesaroni F120 24.7oz 80ft/s 246ft/s 19.9G 688ft 6.4s 6s
OK AeroTech F42 23.7oz 57ft/s 218ft/s 9.4G 707ft 6.7s 5s
OK Cesaroni F59 24.5oz 59ft/s 233ft/s 9.4G 707ft 6.7s 6s
OK AeroTech F50 24.0oz 61ft/s 275ft/s 9.9G 931ft 7.5s 6s
OK AeroTech F25 24.2oz 52ft/s 234ft/s 7.6G 947ft 7.9s 5s
OK AeroTech F52 25.3oz 61ft/s 272ft/s 10.3G 957ft 7.6s 6s
OK AeroTech F40 25.5oz 55ft/s 265ft/s 8.6G 1,031ft 8.0s 6s
warningsW Estes F50 23.9oz 60ft/s 303ft/s 10.8G 1,075ft 7.9s 6s
OK AeroTech G54 25.8oz 58ft/s 296ft/s 10.3G 1,075ft 8.0s 6s
OK Cesaroni G88 26.4oz 66ft/s 332ft/s 14.9G 1,117ft 8.0s 7s
OK AeroTech G104 25.8oz 77ft/s 339ft/s 16.0G 1,152ft 8.0s 7s
OK AeroTech G74 24.1oz 64ft/s 357ft/s 12.5G 1,210ft 8.2s 7s
OK AeroTech G53 26.1oz 63ft/s 317ft/s 10.9G 1,242ft 8.5s 7s
OK Cesaroni G80 26.1oz 63ft/s 368ft/s 12.6G 1,289ft 8.5s 7s
OK AeroTech G77 26.8oz 57ft/s 380ft/s 11.1G 1,381ft 8.8s 7s
warningsW Estes G40 25.3oz 56ft/s 332ft/s 9.4G 1,392ft 9.0s 7s
OK AeroTech G40 25.3oz 56ft/s 332ft/s 9.4G 1,392ft 9.0s 7s
OK AeroTech G77 25.3oz 63ft/s 403ft/s 12.9G 1,429ft 8.8s 8s
OK AeroTech G79 26.5oz 64ft/s 395ft/s 12.4G 1,466ft 9.0s 8s
OK Cesaroni G83 26.1oz 68ft/s 401ft/s 12.8G 1,477ft 9.0s 8s
OK Cesaroni G68 26.5oz 58ft/s 385ft/s 11.5G 1,484ft 9.1s 7s
OK AeroTech G79 25.4oz 56ft/s 394ft/s 10.4G 1,495ft 9.2s 7s
OK Cesaroni G57 26.1oz 63ft/s 370ft/s 11.1G 1,505ft 9.2s 7s
OK Cesaroni G250 26.0oz 111ft/s 472ft/s 39.1G 1,512ft 8.6s 8s
OK AeroTech G76 26.2oz 85ft/s 395ft/s 19.7G 1,592ft 9.1s 7s
OK Cesaroni G126 26.1oz 85ft/s 460ft/s 20.9G 1,601ft 9.0s 8s
OK AeroTech G64 26.3oz 74ft/s 391ft/s 13.8G 1,640ft 9.4s 7s
OK Cesaroni G131 28.1oz 78ft/s 472ft/s 18.0G 1,667ft 9.2s 8s
OK AeroTech G75 25.6oz 66ft/s 430ft/s 13.1G 1,674ft 9.4s 7s
OK AeroTech G78 25.4oz 66ft/s 452ft/s 13.4G 1,708ft 9.4s 8s
OK AeroTech G125 25.4oz 82ft/s 509ft/s 20.1G 1,741ft 9.2s 8s
OK AeroTech G80 25.5oz 71ft/s 468ft/s 13.7G 1,801ft 9.5s 8s
OK Cesaroni G106 27.6oz 66ft/s 504ft/s 16.1G 1,852ft 9.7s 8s
OK KBA G135 29.0oz 71ft/s 524ft/s 18.4G 1,892ft 9.7s 9s
OK KBA G82 29.1oz 57ft/s 468ft/s 11.0G 1,892ft 10.1s 8s
OK AeroTech G75 29.2oz 55ft/s 469ft/s 8.8G 2,001ft 10.4s 8s
OK AeroTech H165 28.1oz 89ft/s 594ft/s 23.5G 2,096ft 9.9s 9s
OK Cesaroni G125 27.9oz 82ft/s 570ft/s 19.9G 2,103ft 10.0s 9s
OK Cesaroni G118 27.6oz 76ft/s 567ft/s 19.3G 2,115ft 10.1s 9s
OK Cesaroni H410 27.4oz 145ft/s 686ft/s 68.1G 2,141ft 9.7s 9s
OK Cesaroni H133 27.7oz 83ft/s 582ft/s 23.9G 2,152ft 10.1s 9s
OK Cesaroni H163 27.6oz 95ft/s 621ft/s 27.3G 2,183ft 10.0s 9s
OK Cesaroni G54 27.8oz 72ft/s 440ft/s 14.7G 2,188ft 10.7s 8s
OK AeroTech G138 26.2oz 82ft/s 652ft/s 22.6G 2,216ft 10.0s 9s
OK AeroTech H128 28.3oz 87ft/s 607ft/s 22.2G 2,219ft 10.2s 9s
OK Cesaroni H90 26.7oz 77ft/s 557ft/s 19.9G 2,220ft 10.3s 9s
OK AeroTech H238 27.9oz 102ft/s 643ft/s 29.6G 2,227ft 10.0s 9s
OK Cesaroni H87 28.2oz 66ft/s 545ft/s 15.4G 2,237ft 10.6s 9s
OK Cesaroni H54 28.4oz 65ft/s 452ft/s 11.8G 2,283ft 11.0s 8s
OK AeroTech H115 28.2oz 72ft/s 604ft/s 14.8G 2,307ft 10.4s 9s
OK AeroTech H182 28.3oz 91ft/s 773ft/s 23.1G 2,652ft 10.6s 9s
OK AeroTech H195 27.9oz 108ft/s 833ft/s 31.8G 2,806ft 10.7s 10s
OK AeroTech H135 28.5oz 81ft/s 696ft/s 18.5G 2,856ft 11.2s 9s
warningsW,D Estes G80 25.4oz 11:1 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 (31ft/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 (34ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (43ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (40ft/s)
failedG Estes F15 speed at end of launch guide too slow (28ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (44ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (40ft/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 (40ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (35ft/s)
failedG Apogee F10 speed at end of launch guide too slow (31ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (38ft/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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