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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 68 motors that fit and appear to have enough thrust (678 motors didn't fit, 45 motors failed safety checks). 111 motor had thrust curves available and 220 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:   Expediter
Owner: Terrance Buyze
Body Diameter: 3.90in
Dry Weight: 42.0oz
MMT Diameter: 29.0mm
MMT Length: 24.00in
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 F120 45.7oz 60ft/s 126ft/s 10.3G 238ft 4.0s 4s
OK AeroTech G104 46.8oz 55ft/s 177ft/s 8.4G 462ft 5.5s 5s
OK AeroTech G74 45.1oz 48ft/s 178ft/s 6.3G 471ft 5.7s 4s
OK AeroTech G79 47.5oz 48ft/s 208ft/s 6.5G 629ft 6.5s 5s
OK Cesaroni G83 47.1oz 49ft/s 211ft/s 6.6G 634ft 6.5s 5s
OK Cesaroni G250 47.0oz 81ft/s 254ft/s 21.0G 686ft 6.3s 6s
OK AeroTech G76 47.2oz 59ft/s 210ft/s 10.5G 709ft 6.7s 5s
OK Cesaroni G126 47.1oz 60ft/s 246ft/s 11.1G 725ft 6.6s 6s
OK AeroTech G64 47.3oz 51ft/s 206ft/s 7.2G 726ft 6.9s 4s
OK AeroTech G78 46.4oz 48ft/s 237ft/s 6.9G 772ft 7.0s 5s
OK Cesaroni G131 49.1oz 59ft/s 258ft/s 9.8G 775ft 6.8s 6s
OK AeroTech G125 46.4oz 58ft/s 270ft/s 10.7G 813ft 6.9s 6s
OK AeroTech G80 46.5oz 51ft/s 247ft/s 7.0G 832ft 7.2s 6s
OK Cesaroni G106 48.6oz 50ft/s 274ft/s 8.7G 875ft 7.3s 6s
OK KBA G135 50.0oz 55ft/s 291ft/s 10.2G 913ft 7.4s 6s
OK Cesaroni G125 48.9oz 60ft/s 316ft/s 10.9G 1,053ft 7.8s 6s
OK Cesaroni G118 48.6oz 57ft/s 313ft/s 10.5G 1,053ft 7.9s 6s
OK Cesaroni G54 48.8oz 52ft/s 240ft/s 7.9G 1,054ft 8.3s 5s
OK AeroTech H165 49.1oz 68ft/s 330ft/s 12.9G 1,061ft 7.7s 7s
OK Cesaroni H175 50.7oz 69ft/s 340ft/s 15.0G 1,083ft 7.7s 7s
OK Cesaroni H133 48.7oz 62ft/s 323ft/s 13.2G 1,086ft 7.9s 7s
OK Cesaroni H90 47.7oz 56ft/s 305ft/s 10.7G 1,111ft 8.1s 6s
OK RATT H70 54.4oz 54ft/s 269ft/s 8.0G 1,111ft 8.4s 6s
OK Cesaroni H87 49.2oz 50ft/s 302ft/s 8.4G 1,115ft 8.3s 6s
OK Cesaroni H163 48.6oz 67ft/s 345ft/s 15.1G 1,116ft 7.9s 7s
OK Cesaroni H410 48.4oz 110ft/s 381ft/s 37.6G 1,117ft 7.6s 7s
OK AeroTech G138 47.2oz 58ft/s 355ft/s 12.4G 1,133ft 7.9s 7s
OK AeroTech H128 49.3oz 66ft/s 340ft/s 12.3G 1,141ft 8.0s 7s
OK AeroTech H238 48.9oz 76ft/s 361ft/s 16.4G 1,159ft 7.9s 7s
OK Cesaroni H123 50.0oz 56ft/s 338ft/s 9.0G 1,161ft 8.2s 7s
OK AeroTech H115 49.2oz 54ft/s 336ft/s 8.0G 1,190ft 8.3s 7s
OK AeroTech H97 51.8oz 49ft/s 325ft/s 6.6G 1,221ft 8.6s 6s
OK Cesaroni H118 50.2oz 60ft/s 344ft/s 11.2G 1,243ft 8.4s 7s
OK Cesaroni H237 52.4oz 79ft/s 418ft/s 18.2G 1,346ft 8.3s 7s
OK AeroTech H220 50.8oz 81ft/s 416ft/s 20.7G 1,363ft 8.3s 7s
OK Cesaroni H151 50.4oz 69ft/s 392ft/s 13.5G 1,383ft 8.6s 7s
OK AeroTech H210 50.7oz 75ft/s 422ft/s 17.2G 1,388ft 8.5s 7s
OK KBA H130 67.0oz 56ft/s 339ft/s 10.8G 1,392ft 9.0s 7s
OK Cesaroni H170 50.2oz 72ft/s 417ft/s 16.0G 1,449ft 8.6s 7s
OK Cesaroni H135 50.9oz 61ft/s 397ft/s 10.7G 1,450ft 8.9s 7s
OK Cesaroni H160 51.6oz 64ft/s 417ft/s 11.9G 1,452ft 8.8s 7s
OK AeroTech H182 49.3oz 66ft/s 436ft/s 12.8G 1,458ft 8.7s 7s
OK AeroTech H180 50.9oz 75ft/s 438ft/s 17.0G 1,500ft 8.7s 7s
OK AeroTech H250 51.0oz 93ft/s 464ft/s 21.7G 1,520ft 8.7s 8s
OK AeroTech H135 49.5oz 60ft/s 400ft/s 10.2G 1,555ft 9.2s 7s
OK KBA H225 53.1oz 66ft/s 469ft/s 17.0G 1,568ft 8.9s 8s
OK AeroTech H195 48.9oz 81ft/s 474ft/s 17.7G 1,587ft 8.8s 8s
OK Cesaroni H295 54.1oz 87ft/s 498ft/s 22.3G 1,604ft 8.8s 8s
OK Cesaroni H180 53.1oz 74ft/s 464ft/s 17.3G 1,668ft 9.1s 8s
OK Cesaroni H194 52.0oz 78ft/s 475ft/s 18.5G 1,671ft 9.1s 8s
OK Cesaroni H200 51.7oz 81ft/s 482ft/s 19.2G 1,702ft 9.1s 8s
OK Cesaroni H255 50.2oz 89ft/s 533ft/s 26.0G 1,766ft 9.1s 8s
OK Cesaroni H140 51.8oz 73ft/s 452ft/s 16.0G 1,769ft 9.4s 7s
OK Cesaroni H340 55.8oz 101ft/s 550ft/s 27.7G 1,770ft 9.1s 8s
OK Cesaroni H399 52.4oz 110ft/s 574ft/s 36.5G 1,782ft 9.0s 8s
OK Cesaroni H226 54.7oz 84ft/s 532ft/s 22.0G 1,909ft 9.5s 8s
OK Cesaroni H159 54.1oz 67ft/s 497ft/s 11.4G 1,914ft 9.8s 8s
OK AeroTech H268 54.6oz 90ft/s 559ft/s 20.7G 1,920ft 9.4s 8s
OK Cesaroni H233 53.6oz 84ft/s 554ft/s 21.8G 1,953ft 9.5s 8s
OK Cesaroni H255 53.2oz 95ft/s 577ft/s 26.9G 1,978ft 9.5s 8s
OK Cesaroni H160 53.3oz 81ft/s 501ft/s 20.4G 1,999ft 9.8s 8s
OK AeroTech I200 54.6oz 83ft/s 539ft/s 19.0G 2,027ft 9.8s 8s
OK Cesaroni I204 54.3oz 84ft/s 570ft/s 22.7G 2,136ft 9.9s 8s
OK AeroTech I205 53.1oz 79ft/s 581ft/s 23.7G 2,145ft 9.9s 8s
OK Cesaroni I224 55.1oz 93ft/s 616ft/s 27.3G 2,285ft 10.0s 8s
OK Cesaroni I243 56.1oz 91ft/s 616ft/s 27.0G 2,288ft 10.1s 8s
OK KBA J520 67.5oz 102ft/s 943ft/s 37.0G 3,165ft 11.1s 10s
warningsW,D Estes G80 46.4oz 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 (16ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (26ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (20ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (29ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (27ft/s)
failedG Estes F15 speed at end of launch guide too slow (12ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (30ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (30ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (25ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (24ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni F59 speed at end of launch guide too slow (41ft/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 (26ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (23ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (43ft/s)
failedG Apogee F10 speed at end of launch guide too slow (16ft/s)
failedG AeroTech F50 speed at end of launch guide too slow (43ft/s)
failedG Estes F50 speed at end of launch guide too slow (44ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (35ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (39ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G88 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (32ft/s)
failedG AeroTech G53 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G80 speed at end of launch guide too slow (46ft/s)
failedG Estes G40 speed at end of launch guide too slow (39ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (39ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (28ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (41ft/s)
failedG KBA G82 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni H54 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (41ft/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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