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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 61 motors that fit and appear to have enough thrust (726 motors didn't fit, 18 motors failed safety checks). 77 motor had thrust curves available and 151 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:   Initiate
Owner: John Taylor
Body Diameter: 77.0mm
Dry Weight: 650g
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 Cesaroni F36 754g 15m/s 46m/s 9.7G 105m 4.9s 4s
OK AeroTech F37 759g 15m/s 49m/s 5.2G 132m 5.6s 4s
OK Cesaroni F36 751g 15m/s 53m/s 4.8G 142m 5.7s 4s
OK AeroTech F62 759g 19m/s 59m/s 7.6G 153m 5.6s 5s
OK Cesaroni F120 756g 28m/s 69m/s 18.2G 163m 5.6s 5s
OK AeroTech F42 726g 20m/s 59m/s 8.7G 167m 5.9s 4s
OK Cesaroni F59 749g 20m/s 64m/s 8.6G 168m 5.8s 5s
OK AeroTech F20 730g 15m/s 51m/s 5.7G 168m 6.2s 4s
OK AeroTech F67 730g 23m/s 73m/s 11.0G 192m 6.1s 5s
OK AeroTech F50 735g 20m/s 74m/s 9.1G 217m 6.5s 5s
OK AeroTech F25 740g 17m/s 62m/s 6.9G 222m 6.9s 4s
OK AeroTech F52 772g 21m/s 74m/s 9.4G 224m 6.6s 5s
OK AeroTech F40 776g 19m/s 71m/s 7.9G 241m 7.0s 5s
OK Estes F50 734g 21m/s 81m/s 9.8G 248m 6.8s 5s
OK AeroTech G54 786g 21m/s 80m/s 9.5G 250m 6.9s 5s
OK Cesaroni G88 802g 23m/s 91m/s 13.8G 258m 6.9s 6s
OK AeroTech G104 786g 26m/s 93m/s 14.8G 265m 6.8s 6s
OK AeroTech G38 776g 16m/s 74m/s 5.9G 274m 7.6s 5s
OK AeroTech G74 737g 22m/s 97m/s 11.4G 276m 7.1s 6s
OK AeroTech G53 796g 22m/s 85m/s 10.1G 287m 7.4s 5s
OK Cesaroni G80 793g 21m/s 100m/s 11.7G 295m 7.3s 6s
OK AeroTech G77 815g 20m/s 103m/s 10.0G 316m 7.6s 6s
OK AeroTech G40 773g 19m/s 88m/s 8.6G 319m 7.8s 5s
OK Estes G40 773g 19m/s 88m/s 8.6G 319m 7.8s 5s
OK AeroTech G77 772g 22m/s 109m/s 11.6G 323m 7.5s 6s
OK AeroTech G72 782g 21m/s 111m/s 11.8G 333m 7.6s 6s
OK AeroTech G79 807g 22m/s 107m/s 11.4G 333m 7.7s 6s
OK Cesaroni G83 795g 23m/s 109m/s 11.9G 335m 7.6s 6s
OK Cesaroni G250 791g 38m/s 131m/s 35.8G 338m 7.3s 7s
OK Cesaroni G68 806g 20m/s 103m/s 10.6G 339m 7.8s 6s
OK AeroTech G79 774g 19m/s 105m/s 9.4G 339m 7.8s 6s
OK Cesaroni G57 796g 21m/s 98m/s 10.3G 344m 7.9s 6s
OK Cesaroni G126 795g 29m/s 125m/s 19.4G 359m 7.6s 7s
OK AeroTech G76 797g 29m/s 105m/s 18.3G 361m 7.8s 6s
OK AeroTech G64 801g 24m/s 104m/s 12.8G 373m 8.0s 6s
OK Cesaroni G131 850g 26m/s 129m/s 16.7G 375m 7.8s 7s
OK AeroTech G75 781g 23m/s 114m/s 12.2G 377m 8.0s 6s
OK AeroTech G78 775g 22m/s 121m/s 12.2G 383m 8.0s 6s
OK AeroTech G125 775g 28m/s 138m/s 18.2G 387m 7.7s 7s
OK AeroTech G80 778g 23m/s 125m/s 12.6G 403m 8.1s 6s
OK Cesaroni G106 837g 23m/s 136m/s 15.0G 414m 8.2s 7s
OK KBA G135 876g 24m/s 143m/s 16.7G 423m 8.2s 7s
OK KBA G82 881g 19m/s 126m/s 9.8G 427m 8.5s 7s
OK AeroTech G75 883g 19m/s 124m/s 8.0G 452m 8.9s 7s
OK AeroTech H165 852g 31m/s 161m/s 21.6G 463m 8.3s 7s
OK Cesaroni H410 832g 50m/s 190m/s 62.3G 466m 8.0s 8s
OK Cesaroni G125 844g 28m/s 153m/s 18.5G 466m 8.4s 7s
OK Cesaroni G118 838g 26m/s 152m/s 18.0G 469m 8.5s 7s
OK Cesaroni H133 840g 29m/s 156m/s 22.3G 476m 8.5s 7s
OK Cesaroni H163 837g 31m/s 168m/s 25.5G 481m 8.4s 7s
OK AeroTech G138 798g 28m/s 175m/s 19.8G 486m 8.4s 7s
OK AeroTech H238 846g 34m/s 174m/s 27.0G 489m 8.3s 7s
OK AeroTech H128 856g 30m/s 163m/s 20.5G 490m 8.5s 7s
OK Cesaroni H90 813g 26m/s 146m/s 18.5G 493m 8.7s 7s
OK Cesaroni G54 843g 24m/s 114m/s 13.6G 494m 9.1s 6s
OK Cesaroni H87 855g 23m/s 143m/s 14.3G 499m 8.9s 7s
OK AeroTech H115 855g 24m/s 160m/s 13.6G 511m 8.8s 7s
OK Cesaroni H54 859g 22m/s 116m/s 11.0G 517m 9.4s 6s
OK AeroTech H182 857g 30m/s 205m/s 21.1G 578m 8.8s 8s
OK AeroTech H195 847g 36m/s 220m/s 29.6G 609m 8.8s 8s
warningsD Estes G80 778g 10:1 thrust/weight ratio (no data)

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 (10m/s)
failedG AeroTech E23 speed at end of launch guide too slow (14m/s)
failedG AeroTech E16 speed at end of launch guide too slow (11m/s)
failedG AeroTech F23 speed at end of launch guide too slow (14m/s)
failedG AeroTech F27 speed at end of launch guide too slow (14m/s)
failedG Estes F15 speed at end of launch guide too slow (9m/s)
failedG Cesaroni F32 speed at end of launch guide too slow (13m/s)
failedG Cesaroni F29 speed at end of launch guide too slow (13m/s)
failedG Cesaroni F31 speed at end of launch guide too slow (14m/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 (13m/s)
failedG AeroTech F22 speed at end of launch guide too slow (11m/s)
failedG Apogee F10 speed at end of launch guide too slow (10m/s)
failedG AeroTech G25 speed at end of launch guide too slow (14m/s)
failedG AeroTech G8 speed at end of launch guide too slow (3m/s)
failedG AeroTech G11 speed at end of launch guide too slow (10m/s)
failedG AeroTech G12 speed at end of launch guide too slow (11m/s)
failedG Cesaroni G33 speed at end of launch guide too slow (13m/s)

G These simulations were run with a launch guide length of 2m (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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