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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 54 motors that fit and appear to have enough thrust (717 motors didn't fit, 20 motors failed safety checks). 72 motor had thrust curves available and 139 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:   Estes Partizon PSII
Owner: Joseph
Body Diameter: 2.50in
Dry Weight: 19.1oz
MMT Diameter: 29.0mm
MMT Length: 8.00in
CD: 0.30

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 22.9oz 53ft/s 241ft/s 9.1G 854ft 7.4s 6s
OK Cesaroni F120 22.8oz 76ft/s 270ft/s 21.9G 930ft 7.5s 7s
OK Cesaroni F59 22.6oz 55ft/s 261ft/s 10.2G 955ft 7.8s 7s
OK AeroTech F42 21.8oz 56ft/s 248ft/s 10.3G 959ft 7.9s 6s
OK AeroTech F50 22.1oz 57ft/s 312ft/s 10.8G 1,303ft 9.0s 8s
OK AeroTech F25 22.3oz 50ft/s 274ft/s 8.3G 1,312ft 9.3s 7s
OK AeroTech F52 23.4oz 60ft/s 309ft/s 11.2G 1,328ft 9.1s 8s
OK AeroTech F40 23.6oz 54ft/s 306ft/s 9.4G 1,435ft 9.6s 8s
OK AeroTech G54 23.9oz 57ft/s 337ft/s 11.3G 1,511ft 9.7s 8s
warningsW Estes F50 22.0oz 59ft/s 347ft/s 11.9G 1,534ft 9.6s 8s
OK Cesaroni G88 24.5oz 64ft/s 370ft/s 16.2G 1,584ft 9.7s 9s
OK AeroTech G104 23.9oz 74ft/s 380ft/s 17.3G 1,644ft 9.7s 9s
OK AeroTech G74 22.2oz 62ft/s 404ft/s 13.9G 1,763ft 10.1s 9s
OK AeroTech G53 24.2oz 62ft/s 366ft/s 11.8G 1,771ft 10.4s 8s
OK Cesaroni G80 24.2oz 57ft/s 414ft/s 13.7G 1,863ft 10.4s 9s
OK AeroTech G77 24.9oz 53ft/s 429ft/s 12.5G 2,004ft 10.9s 10s
warningsW Estes G40 23.4oz 55ft/s 391ft/s 10.2G 2,017ft 11.0s 9s
OK AeroTech G40 23.4oz 55ft/s 391ft/s 10.2G 2,017ft 11.0s 9s
OK AeroTech G77 23.4oz 58ft/s 460ft/s 14.5G 2,117ft 11.0s 10s
OK AeroTech G79 24.6oz 62ft/s 450ft/s 13.7G 2,150ft 11.1s 10s
OK Cesaroni G68 24.6oz 54ft/s 442ft/s 12.4G 2,168ft 11.3s 10s
OK Cesaroni G83 24.2oz 66ft/s 457ft/s 13.9G 2,172ft 11.1s 10s
OK Cesaroni G57 24.2oz 58ft/s 430ft/s 12.1G 2,197ft 11.4s 9s
OK AeroTech G79 23.5oz 52ft/s 455ft/s 11.7G 2,210ft 11.3s 9s
OK Cesaroni G250 24.1oz 104ft/s 521ft/s 43.0G 2,272ft 10.9s 10s
OK AeroTech G76 24.3oz 80ft/s 459ft/s 21.4G 2,355ft 11.4s 9s
OK Cesaroni G126 24.2oz 80ft/s 517ft/s 22.6G 2,401ft 11.3s 10s
OK AeroTech G64 24.4oz 66ft/s 456ft/s 15.0G 2,422ft 11.7s 9s
OK Cesaroni G131 26.2oz 73ft/s 528ft/s 20.6G 2,491ft 11.6s 11s
OK AeroTech G75 23.7oz 64ft/s 500ft/s 14.3G 2,508ft 11.7s 10s
OK AeroTech G78 23.5oz 63ft/s 521ft/s 14.7G 2,580ft 11.8s 10s
OK AeroTech G125 23.5oz 77ft/s 577ft/s 22.8G 2,665ft 11.8s 11s
OK AeroTech G80 23.6oz 68ft/s 543ft/s 14.9G 2,736ft 12.1s 10s
OK Cesaroni G106 25.7oz 63ft/s 572ft/s 17.4G 2,803ft 12.3s 11s
OK KBA G82 27.2oz 55ft/s 536ft/s 12.6G 2,824ft 12.6s 11s
OK KBA G135 27.1oz 67ft/s 588ft/s 20.5G 2,862ft 12.3s 11s
OK AeroTech G75 27.3oz 52ft/s 547ft/s 9.7G 2,996ft 13.0s 11s
OK Cesaroni G125 26.0oz 76ft/s 652ft/s 21.4G 3,249ft 12.8s 12s
OK AeroTech H165 26.2oz 83ft/s 673ft/s 25.8G 3,255ft 12.7s 12s
OK Cesaroni G118 25.7oz 71ft/s 651ft/s 20.8G 3,266ft 12.9s 12s
OK Cesaroni G54 25.9oz 68ft/s 532ft/s 15.8G 3,297ft 13.4s 10s
OK Cesaroni H133 25.8oz 77ft/s 668ft/s 25.8G 3,338ft 13.0s 12s
OK Cesaroni H410 25.5oz 132ft/s 759ft/s 74.6G 3,397ft 12.6s 12s
OK Cesaroni H163 25.7oz 87ft/s 705ft/s 29.4G 3,413ft 13.0s 12s
OK Cesaroni H87 26.3oz 63ft/s 642ft/s 16.5G 3,437ft 13.4s 12s
OK Cesaroni H54 26.5oz 62ft/s 550ft/s 12.7G 3,438ft 13.8s 10s
OK Cesaroni H90 24.8oz 73ft/s 658ft/s 21.5G 3,440ft 13.2s 11s
OK AeroTech H128 26.4oz 85ft/s 696ft/s 24.2G 3,457ft 13.1s 12s
OK AeroTech H238 26.0oz 95ft/s 729ft/s 32.6G 3,500ft 13.0s 12s
OK AeroTech G138 24.3oz 77ft/s 746ft/s 26.4G 3,501ft 13.0s 12s
OK AeroTech H115 26.3oz 67ft/s 706ft/s 16.2G 3,596ft 13.4s 12s
OK AeroTech H182 26.4oz 83ft/s 897ft/s 25.8G 4,260ft 13.9s 13s
OK AeroTech H195 26.0oz 105ft/s 975ft/s 34.1G 4,558ft 14.1s 13s
warningsW,D Estes G80 23.5oz 12:1 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 (30ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (40ft/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 (38ft/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 (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 (43ft/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 (35ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (39ft/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 (33ft/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 (45ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (39ft/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 5ft (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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