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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 59 motors that fit and appear to have enough thrust (719 motors didn't fit, 13 motors failed safety checks). 70 motor had thrust curves available and 137 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:   finless
Owner: David Hall
Body Diameter: 3.00in
Dry Weight: 725g
MMT Diameter: 29.0mm
MMT Length: 20.0cm
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 F36 829g 51ft/s 136ft/s 8.7G 310ft 4.7s 4s
OK AeroTech F37 834g 51ft/s 145ft/s 4.7G 394ft 5.5s 4s
OK Cesaroni F36 826g 52ft/s 158ft/s 4.3G 428ft 5.6s 4s
OK AeroTech F23 807g 51ft/s 141ft/s 5.2G 442ft 5.8s 4s
OK AeroTech F62 834g 65ft/s 177ft/s 6.8G 473ft 5.6s 5s
OK AeroTech F20 805g 53ft/s 152ft/s 5.1G 515ft 6.2s 4s
OK Cesaroni F120 831g 99ft/s 205ft/s 16.6G 516ft 5.6s 5s
OK AeroTech F42 801g 66ft/s 178ft/s 7.7G 521ft 5.9s 4s
OK Cesaroni F59 824g 69ft/s 192ft/s 7.7G 525ft 5.9s 5s
OK AeroTech F50 810g 70ft/s 226ft/s 8.1G 704ft 6.7s 5s
OK AeroTech F25 815g 60ft/s 189ft/s 6.2G 708ft 7.0s 4s
OK AeroTech F52 847g 72ft/s 225ft/s 8.5G 728ft 6.8s 5s
OK AeroTech F40 851g 66ft/s 218ft/s 7.1G 785ft 7.2s 5s
warningsW Estes F50 809g 75ft/s 249ft/s 8.9G 822ft 7.1s 6s
OK AeroTech G54 861g 72ft/s 246ft/s 8.6G 826ft 7.2s 6s
OK Cesaroni G88 877g 77ft/s 278ft/s 12.6G 866ft 7.2s 6s
OK AeroTech G104 861g 93ft/s 284ft/s 13.4G 895ft 7.2s 6s
OK AeroTech G38 851g 55ft/s 229ft/s 5.3G 899ft 7.9s 5s
OK AeroTech G74 812g 78ft/s 295ft/s 10.4G 935ft 7.4s 6s
OK AeroTech G53 871g 75ft/s 264ft/s 9.1G 966ft 7.7s 6s
OK Cesaroni G80 868g 76ft/s 308ft/s 10.6G 1,007ft 7.7s 6s
OK AeroTech G77 890g 69ft/s 318ft/s 9.3G 1,084ft 8.0s 7s
warningsW Estes G40 848g 66ft/s 275ft/s 7.8G 1,085ft 8.2s 6s
OK AeroTech G40 848g 66ft/s 275ft/s 7.8G 1,085ft 8.2s 6s
OK AeroTech G77 847g 77ft/s 336ft/s 10.7G 1,124ft 8.0s 7s
OK AeroTech G79 882g 79ft/s 331ft/s 10.4G 1,157ft 8.2s 7s
OK Cesaroni G83 870g 80ft/s 336ft/s 10.7G 1,165ft 8.1s 7s
OK Cesaroni G68 881g 68ft/s 322ft/s 9.6G 1,169ft 8.3s 7s
OK AeroTech G79 849g 69ft/s 327ft/s 8.7G 1,177ft 8.4s 6s
OK Cesaroni G57 871g 74ft/s 308ft/s 9.3G 1,184ft 8.4s 6s
OK Cesaroni G250 866g 132ft/s 398ft/s 33.0G 1,204ft 7.9s 7s
OK AeroTech G76 872g 99ft/s 332ft/s 16.6G 1,267ft 8.3s 6s
OK Cesaroni G126 870g 100ft/s 387ft/s 17.6G 1,276ft 8.2s 7s
OK AeroTech G25 846g 49ft/s 250ft/s 4.1G 1,292ft 9.6s 5s
OK AeroTech G64 876g 83ft/s 328ft/s 11.6G 1,304ft 8.6s 6s
OK AeroTech G75 856g 77ft/s 360ft/s 11.0G 1,334ft 8.6s 7s
OK Cesaroni G131 925g 92ft/s 400ft/s 15.3G 1,337ft 8.4s 7s
OK AeroTech G78 850g 79ft/s 378ft/s 11.2G 1,363ft 8.6s 7s
OK AeroTech G125 850g 98ft/s 427ft/s 16.8G 1,396ft 8.4s 7s
OK AeroTech G80 853g 84ft/s 392ft/s 11.4G 1,443ft 8.8s 7s
OK Cesaroni G106 912g 80ft/s 426ft/s 13.7G 1,489ft 8.9s 8s
OK AeroTech G75 958g 66ft/s 397ft/s 7.4G 1,614ft 9.6s 7s
OK AeroTech H165 927g 106ft/s 505ft/s 19.9G 1,708ft 9.1s 8s
OK Cesaroni G125 920g 99ft/s 483ft/s 16.9G 1,710ft 9.3s 8s
OK Cesaroni G118 913g 89ft/s 481ft/s 16.4G 1,718ft 9.3s 8s
OK Cesaroni H410 908g 176ft/s 583ft/s 57.8G 1,752ft 8.9s 8s
OK Cesaroni H133 915g 102ft/s 494ft/s 20.4G 1,752ft 9.3s 8s
OK Cesaroni G54 918g 86ft/s 371ft/s 12.4G 1,771ft 9.9s 7s
OK Cesaroni H163 912g 110ft/s 527ft/s 23.3G 1,781ft 9.3s 8s
OK Cesaroni H90 888g 90ft/s 470ft/s 16.8G 1,807ft 9.6s 8s
OK AeroTech G138 873g 97ft/s 550ft/s 19.1G 1,809ft 9.3s 8s
OK AeroTech H128 931g 106ft/s 517ft/s 19.0G 1,814ft 9.4s 8s
OK Cesaroni H87 930g 82ft/s 462ft/s 13.1G 1,820ft 9.8s 8s
OK AeroTech H238 921g 123ft/s 548ft/s 25.2G 1,823ft 9.2s 8s
OK Cesaroni H54 934g 76ft/s 382ft/s 10.0G 1,851ft 10.2s 7s
OK AeroTech H115 930g 89ft/s 513ft/s 12.5G 1,890ft 9.7s 8s
OK AeroTech H182 932g 108ft/s 658ft/s 19.6G 2,196ft 9.9s 9s
OK AeroTech H195 922g 125ft/s 710ft/s 27.1G 2,336ft 10.0s 9s
warningsW,D Estes G80 850g 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 (33ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (48ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (38ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (48ft/s)
failedG Estes F15 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (47ft/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 (45ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (40ft/s)
failedG Apogee F10 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (46ft/s)

G These simulations were run with a launch guide length of 10ft (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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