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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 (725 motors didn't fit, 23 motors failed safety checks). 76 motor had thrust curves available and 150 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 Patriot 2.6
Owner: Chris Scharrer
Body Diameter: 2.60in
Dry Weight: 685g
MMT Diameter: 29.0mm
MMT Length: 8.00in
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 794g 51ft/s 188ft/s 7.2G 515ft 5.8s 5s
OK Cesaroni F120 791g 78ft/s 216ft/s 17.5G 559ft 5.8s 5s
OK AeroTech F42 761g 54ft/s 189ft/s 8.2G 567ft 6.1s 5s
OK Cesaroni F59 784g 54ft/s 203ft/s 8.2G 570ft 6.1s 5s
OK AeroTech F67 765g 61ft/s 231ft/s 10.5G 667ft 6.4s 5s
OK AeroTech F50 770g 56ft/s 239ft/s 8.6G 759ft 6.9s 5s
OK AeroTech F25 775g 49ft/s 201ft/s 6.6G 767ft 7.2s 5s
OK AeroTech F52 807g 57ft/s 238ft/s 9.0G 784ft 7.0s 6s
OK AeroTech F40 811g 52ft/s 231ft/s 7.5G 845ft 7.4s 5s
warningsW Estes F50 769g 58ft/s 263ft/s 9.4G 883ft 7.3s 6s
OK AeroTech G54 822g 56ft/s 259ft/s 9.1G 887ft 7.4s 6s
OK Cesaroni G88 837g 61ft/s 292ft/s 13.2G 927ft 7.4s 6s
OK AeroTech G104 821g 74ft/s 298ft/s 14.1G 957ft 7.4s 6s
OK AeroTech G74 772g 62ft/s 311ft/s 11.0G 1,001ft 7.6s 6s
OK AeroTech G53 831g 59ft/s 278ft/s 9.6G 1,033ft 7.9s 6s
OK Cesaroni G80 828g 58ft/s 324ft/s 11.1G 1,074ft 7.9s 7s
OK AeroTech G77 850g 54ft/s 335ft/s 9.8G 1,155ft 8.2s 7s
warningsW Estes G40 808g 54ft/s 290ft/s 8.2G 1,159ft 8.4s 6s
OK AeroTech G40 808g 54ft/s 290ft/s 8.2G 1,159ft 8.4s 6s
OK AeroTech G77 808g 59ft/s 354ft/s 11.3G 1,196ft 8.2s 7s
OK AeroTech G79 842g 60ft/s 348ft/s 11.0G 1,230ft 8.4s 7s
OK Cesaroni G83 830g 64ft/s 354ft/s 11.3G 1,239ft 8.3s 7s
OK Cesaroni G68 841g 54ft/s 338ft/s 10.1G 1,244ft 8.5s 7s
OK AeroTech G79 809g 52ft/s 345ft/s 9.2G 1,252ft 8.5s 7s
OK Cesaroni G57 831g 59ft/s 324ft/s 9.8G 1,261ft 8.6s 7s
OK Cesaroni G250 826g 103ft/s 418ft/s 34.7G 1,275ft 8.0s 8s
OK AeroTech G76 832g 80ft/s 349ft/s 17.5G 1,343ft 8.5s 7s
OK Cesaroni G126 830g 80ft/s 406ft/s 18.5G 1,351ft 8.4s 7s
OK AeroTech G64 836g 69ft/s 344ft/s 12.2G 1,383ft 8.8s 6s
OK Cesaroni G131 885g 74ft/s 419ft/s 16.0G 1,413ft 8.6s 7s
OK AeroTech G75 816g 62ft/s 378ft/s 11.6G 1,413ft 8.8s 7s
OK AeroTech G78 810g 63ft/s 398ft/s 11.7G 1,443ft 8.8s 7s
OK AeroTech G125 810g 78ft/s 448ft/s 17.7G 1,475ft 8.6s 8s
OK AeroTech G80 813g 66ft/s 412ft/s 12.1G 1,526ft 8.9s 7s
OK Cesaroni G106 872g 62ft/s 446ft/s 14.3G 1,572ft 9.1s 8s
OK KBA G82 916g 55ft/s 416ft/s 9.8G 1,608ft 9.4s 7s
OK KBA G135 911g 68ft/s 467ft/s 16.4G 1,610ft 9.1s 8s
OK AeroTech G75 918g 51ft/s 416ft/s 7.8G 1,703ft 9.8s 7s
OK AeroTech H165 887g 86ft/s 528ft/s 20.9G 1,794ft 9.3s 8s
OK Cesaroni G125 880g 78ft/s 506ft/s 17.7G 1,798ft 9.4s 8s
OK Cesaroni G118 873g 72ft/s 503ft/s 17.2G 1,807ft 9.5s 8s
OK Cesaroni H410 868g 136ft/s 611ft/s 60.6G 1,836ft 9.1s 9s
OK Cesaroni H133 875g 80ft/s 517ft/s 21.4G 1,841ft 9.5s 8s
OK Cesaroni G54 878g 68ft/s 388ft/s 13.0G 1,866ft 10.1s 7s
OK Cesaroni H163 872g 84ft/s 552ft/s 24.4G 1,870ft 9.4s 8s
OK AeroTech G138 833g 72ft/s 577ft/s 20.0G 1,898ft 9.4s 8s
OK Cesaroni H90 848g 73ft/s 492ft/s 17.7G 1,899ft 9.7s 8s
OK AeroTech H128 891g 82ft/s 540ft/s 19.9G 1,903ft 9.5s 8s
OK AeroTech H238 881g 99ft/s 573ft/s 26.4G 1,911ft 9.4s 8s
OK Cesaroni H87 890g 62ft/s 483ft/s 13.7G 1,914ft 9.9s 8s
OK Cesaroni H54 894g 60ft/s 400ft/s 10.5G 1,950ft 10.4s 7s
OK AeroTech H115 890g 68ft/s 536ft/s 13.1G 1,982ft 9.8s 8s
OK AeroTech H182 892g 81ft/s 687ft/s 20.6G 2,293ft 10.0s 9s
OK AeroTech H195 882g 105ft/s 741ft/s 28.4G 2,435ft 10.1s 9s
warningsW,D Estes G80 810g 10:1 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 (28ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (38ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (31ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (40ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (37ft/s)
failedG Estes F15 speed at end of launch guide too slow (25ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (41ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (38ft/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 (38ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (32ft/s)
failedG Apogee F10 speed at end of launch guide too slow (29ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (39ft/s)
failedG AeroTech G8 speed at end of launch guide too slow (9ft/s)
failedG AeroTech G11 speed at end of launch guide too slow (29ft/s)
failedG AeroTech G12 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (36ft/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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