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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 45 motors that fit and appear to have enough thrust (680 motors didn't fit, 66 motors failed safety checks). 109 motor had thrust curves available and 216 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:   Patriot Rocket Kit 4 inch
Owner: Kurt Friesth
Body Diameter: 4.00in
Dry Weight: 44.0oz
MMT Diameter: 29.0mm
MMT Length: 360.0mm
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 Cesaroni G250 49.0oz 64ft/s 243ft/s 20.1G 645ft 6.1s 6s
OK AeroTech G76 49.2oz 48ft/s 201ft/s 10.0G 665ft 6.5s 5s
OK Cesaroni G126 49.1oz 48ft/s 235ft/s 10.6G 681ft 6.4s 5s
OK Cesaroni G125 50.9oz 49ft/s 302ft/s 10.4G 998ft 7.6s 6s
OK AeroTech H165 51.1oz 54ft/s 317ft/s 12.4G 1,007ft 7.6s 7s
OK Cesaroni H175 52.7oz 55ft/s 326ft/s 14.4G 1,029ft 7.6s 7s
OK Cesaroni H133 50.7oz 50ft/s 310ft/s 12.6G 1,030ft 7.7s 6s
OK Cesaroni H163 50.6oz 53ft/s 330ft/s 14.4G 1,061ft 7.7s 7s
OK Cesaroni H410 50.4oz 85ft/s 366ft/s 36.1G 1,064ft 7.4s 7s
OK AeroTech H128 51.3oz 52ft/s 326ft/s 11.8G 1,085ft 7.8s 6s
OK AeroTech H238 50.9oz 61ft/s 346ft/s 15.7G 1,103ft 7.7s 7s
OK Cesaroni H118 52.2oz 48ft/s 330ft/s 10.7G 1,184ft 8.2s 7s
OK Cesaroni H237 54.4oz 62ft/s 401ft/s 17.5G 1,287ft 8.2s 7s
OK AeroTech H220 52.8oz 66ft/s 400ft/s 19.9G 1,303ft 8.2s 7s
OK Cesaroni H151 52.4oz 54ft/s 377ft/s 13.0G 1,321ft 8.4s 7s
OK AeroTech H210 52.7oz 59ft/s 405ft/s 16.5G 1,327ft 8.3s 7s
OK Cesaroni H135 52.9oz 50ft/s 381ft/s 10.3G 1,385ft 8.7s 7s
OK Cesaroni H170 52.2oz 61ft/s 400ft/s 15.4G 1,386ft 8.5s 7s
OK Cesaroni H160 53.6oz 51ft/s 400ft/s 11.4G 1,388ft 8.6s 7s
OK AeroTech H182 51.3oz 52ft/s 419ft/s 12.3G 1,395ft 8.6s 7s
OK AeroTech H180 52.9oz 59ft/s 421ft/s 16.3G 1,437ft 8.6s 7s
OK AeroTech H250 53.0oz 71ft/s 446ft/s 20.9G 1,456ft 8.5s 8s
OK AeroTech H135 51.5oz 48ft/s 385ft/s 9.7G 1,487ft 9.0s 7s
OK KBA H225 55.1oz 51ft/s 452ft/s 16.3G 1,503ft 8.8s 8s
OK AeroTech H195 50.9oz 62ft/s 455ft/s 16.9G 1,522ft 8.7s 8s
OK Cesaroni H295 56.1oz 72ft/s 479ft/s 21.5G 1,540ft 8.7s 8s
OK Cesaroni H180 55.1oz 62ft/s 447ft/s 16.7G 1,601ft 9.0s 7s
OK Cesaroni H194 54.0oz 60ft/s 457ft/s 17.8G 1,604ft 8.9s 8s
OK Cesaroni H200 53.7oz 63ft/s 464ft/s 18.5G 1,634ft 9.0s 8s
OK Cesaroni H255 52.2oz 73ft/s 513ft/s 24.9G 1,698ft 9.0s 8s
OK Cesaroni H140 53.8oz 61ft/s 435ft/s 15.4G 1,698ft 9.3s 7s
OK Cesaroni H340 57.8oz 77ft/s 530ft/s 26.7G 1,704ft 9.0s 8s
OK Cesaroni H399 54.4oz 92ft/s 552ft/s 35.1G 1,715ft 8.9s 8s
OK Cesaroni H226 56.7oz 69ft/s 513ft/s 21.2G 1,838ft 9.3s 8s
OK Cesaroni H159 56.1oz 53ft/s 479ft/s 10.9G 1,840ft 9.7s 8s
OK AeroTech H268 56.6oz 68ft/s 539ft/s 19.9G 1,849ft 9.3s 8s
OK Cesaroni H233 55.6oz 66ft/s 534ft/s 21.0G 1,882ft 9.4s 8s
OK Cesaroni H255 55.2oz 78ft/s 556ft/s 25.9G 1,906ft 9.4s 8s
OK Cesaroni H160 55.3oz 67ft/s 483ft/s 19.6G 1,924ft 9.7s 8s
OK AeroTech I200 56.6oz 65ft/s 520ft/s 18.3G 1,953ft 9.6s 8s
OK Cesaroni I204 56.3oz 69ft/s 550ft/s 21.8G 2,060ft 9.8s 8s
OK AeroTech I205 55.1oz 61ft/s 560ft/s 22.8G 2,070ft 9.8s 8s
OK Cesaroni I224 57.1oz 76ft/s 594ft/s 26.3G 2,206ft 9.9s 8s
OK Cesaroni I243 58.1oz 75ft/s 595ft/s 26.0G 2,210ft 9.9s 8s
warningsW,D Estes G80 48.4oz 6:1 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 (12ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (22ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (16ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (23ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (21ft/s)
failedG Estes F15 speed at end of launch guide too slow (10ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (24ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (23ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (24ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (20ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (19ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (21ft/s)
failedG Cesaroni F120 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni F59 speed at end of launch guide too slow (32ft/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (2:1)
failedG AeroTech F26 speed at end of launch guide too slow (20ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (18ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (35ft/s)
failedG Apogee F10 speed at end of launch guide too slow (13ft/s)
failedG AeroTech F50 speed at end of launch guide too slow (34ft/s)
failedG Estes F50 speed at end of launch guide too slow (34ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (29ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (31ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (35ft/s)
failedG AeroTech G104 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G74 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni G88 speed at end of launch guide too slow (38ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (26ft/s)
failedG AeroTech G53 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni G80 speed at end of launch guide too slow (35ft/s)
failedG Estes G40 speed at end of launch guide too slow (32ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (36ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G83 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (37ft/s)
failedG AeroTech G78 speed at end of launch guide too slow (38ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (32ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (22ft/s)
failedG AeroTech G64 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G131 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G125 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G80 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni G106 speed at end of launch guide too slow (39ft/s)
failedG KBA G82 speed at end of launch guide too slow (33ft/s)
failedG KBA G135 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (21ft/s)
failedG AeroTech G138 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G118 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G54 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni H90 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni H54 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni H87 speed at end of launch guide too slow (40ft/s)
failedG AeroTech H115 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (43ft/s)
failedG AeroTech H97 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (32ft/s)
failedG KBA H130 speed at end of launch guide too slow (47ft/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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