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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 82 motors that fit and appear to have enough thrust (694 motors didn't fit, 15 motors failed safety checks). 95 motor had thrust curves available and 184 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:   Great Big Daddy
Owner: Wayne Comfort
Body Diameter: 3.00in
Dry Weight: 17.5oz
MMT Diameter: 29.0mm
MMT Length: 12.00in
CD: 0.70

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 21.2oz 48ft/s 195ft/s 12.5G 475ft 5.5s 4s
OK AeroTech F62 21.3oz 60ft/s 245ft/s 9.7G 647ft 6.1s 5s
OK AeroTech F23 20.4oz 48ft/s 198ft/s 7.6G 648ft 6.5s 4s
OK Cesaroni F120 21.2oz 88ft/s 283ft/s 22.9G 672ft 6.0s 6s
OK Cesaroni F59 21.0oz 63ft/s 265ft/s 11.1G 699ft 6.3s 5s
OK AeroTech F42 20.2oz 64ft/s 245ft/s 11.2G 703ft 6.3s 5s
OK AeroTech F20 20.3oz 49ft/s 211ft/s 7.5G 724ft 6.7s 4s
OK AeroTech F50 20.5oz 65ft/s 304ft/s 11.7G 866ft 6.8s 5s
OK AeroTech F52 21.8oz 65ft/s 298ft/s 12.0G 894ft 7.0s 6s
OK AeroTech F25 20.7oz 56ft/s 251ft/s 9.0G 908ft 7.3s 5s
OK AeroTech F40 22.0oz 61ft/s 285ft/s 10.1G 962ft 7.3s 5s
warningsW Estes F50 20.4oz 68ft/s 329ft/s 12.5G 969ft 7.1s 6s
OK AeroTech G54 22.3oz 65ft/s 320ft/s 12.0G 980ft 7.2s 6s
OK Cesaroni G88 22.9oz 73ft/s 368ft/s 17.4G 995ft 7.1s 6s
OK AeroTech G104 22.3oz 85ft/s 372ft/s 18.6G 1,016ft 7.1s 6s
OK AeroTech G74 20.6oz 72ft/s 393ft/s 14.5G 1,052ft 7.2s 6s
OK AeroTech G38 21.9oz 51ft/s 294ft/s 7.7G 1,082ft 7.9s 5s
OK AeroTech G53 22.6oz 70ft/s 336ft/s 12.7G 1,103ft 7.6s 6s
OK Cesaroni G80 22.6oz 65ft/s 402ft/s 14.7G 1,119ft 7.5s 6s
OK AeroTech G77 23.3oz 61ft/s 411ft/s 12.3G 1,190ft 7.8s 6s
OK AeroTech G77 21.8oz 67ft/s 434ft/s 14.2G 1,204ft 7.6s 6s
warningsW Estes G40 21.8oz 63ft/s 345ft/s 11.0G 1,217ft 7.9s 6s
OK AeroTech G40 21.8oz 63ft/s 345ft/s 11.0G 1,217ft 7.9s 6s
OK Cesaroni G250 22.5oz 117ft/s 530ft/s 44.3G 1,230ft 7.3s 7s
OK AeroTech G79 23.0oz 71ft/s 422ft/s 14.2G 1,242ft 7.8s 6s
OK Cesaroni G83 22.6oz 75ft/s 430ft/s 14.9G 1,249ft 7.7s 6s
OK AeroTech G79 21.9oz 60ft/s 414ft/s 11.9G 1,265ft 7.9s 6s
OK Cesaroni G68 23.0oz 61ft/s 405ft/s 13.4G 1,270ft 7.9s 6s
OK Cesaroni G57 22.6oz 67ft/s 383ft/s 13.0G 1,293ft 8.1s 6s
OK Cesaroni G126 22.6oz 92ft/s 498ft/s 24.3G 1,312ft 7.6s 7s
OK AeroTech G76 22.7oz 92ft/s 411ft/s 22.9G 1,332ft 7.8s 6s
OK Cesaroni G131 24.6oz 84ft/s 509ft/s 20.7G 1,362ft 7.8s 7s
OK AeroTech G64 22.8oz 76ft/s 404ft/s 16.1G 1,378ft 8.1s 6s
OK AeroTech G75 22.1oz 73ft/s 445ft/s 15.4G 1,383ft 8.0s 6s
OK AeroTech G125 21.9oz 83ft/s 548ft/s 22.5G 1,389ft 7.7s 7s
OK AeroTech G78 21.9oz 73ft/s 477ft/s 15.4G 1,396ft 8.0s 6s
OK AeroTech G80 22.0oz 77ft/s 487ft/s 16.0G 1,459ft 8.1s 6s
OK Cesaroni G106 24.1oz 72ft/s 533ft/s 18.6G 1,496ft 8.2s 7s
OK KBA G135 25.5oz 76ft/s 559ft/s 20.0G 1,521ft 8.2s 7s
OK KBA G82 25.6oz 62ft/s 485ft/s 11.9G 1,554ft 8.6s 7s
OK Cesaroni H410 23.9oz 149ft/s 754ft/s 76.1G 1,611ft 7.9s 7s
OK AeroTech H165 24.6oz 94ft/s 624ft/s 26.5G 1,630ft 8.2s 7s
OK AeroTech G75 25.7oz 59ft/s 474ft/s 9.8G 1,642ft 8.9s 7s
OK Cesaroni H175 26.2oz 94ft/s 642ft/s 28.1G 1,646ft 8.2s 7s
OK Cesaroni G125 24.4oz 88ft/s 590ft/s 22.9G 1,652ft 8.3s 7s
OK Cesaroni G118 24.1oz 82ft/s 587ft/s 22.3G 1,664ft 8.4s 7s
OK Cesaroni H133 24.2oz 89ft/s 602ft/s 27.5G 1,682ft 8.4s 7s
OK Cesaroni H163 24.1oz 101ft/s 652ft/s 31.5G 1,685ft 8.3s 7s
OK AeroTech G138 22.7oz 83ft/s 685ft/s 23.4G 1,695ft 8.2s 7s
OK AeroTech H238 24.4oz 108ft/s 677ft/s 32.7G 1,704ft 8.2s 7s
OK AeroTech H128 24.8oz 92ft/s 628ft/s 25.1G 1,720ft 8.4s 7s
OK Cesaroni H90 23.2oz 84ft/s 554ft/s 23.0G 1,748ft 8.6s 7s
OK Cesaroni H123 25.5oz 79ft/s 620ft/s 18.7G 1,770ft 8.6s 7s
OK Cesaroni H87 24.7oz 72ft/s 543ft/s 17.7G 1,777ft 8.8s 7s
OK Cesaroni G54 24.3oz 78ft/s 431ft/s 16.9G 1,788ft 9.1s 6s
OK AeroTech H115 24.7oz 77ft/s 609ft/s 16.7G 1,793ft 8.6s 7s
OK Cesaroni H118 25.7oz 87ft/s 607ft/s 22.8G 1,858ft 8.7s 7s
OK Cesaroni H54 24.9oz 71ft/s 438ft/s 13.6G 1,868ft 9.4s 6s
OK Cesaroni H237 27.9oz 107ft/s 758ft/s 33.8G 1,870ft 8.5s 8s
OK AeroTech H97 27.3oz 69ft/s 571ft/s 13.3G 1,878ft 9.1s 7s
OK AeroTech H220 26.3oz 116ft/s 753ft/s 41.0G 1,893ft 8.5s 8s
OK AeroTech H210 26.2oz 104ft/s 759ft/s 32.7G 1,922ft 8.6s 8s
OK Cesaroni H151 25.9oz 99ft/s 688ft/s 27.3G 1,953ft 8.7s 7s
OK AeroTech H182 24.8oz 97ft/s 781ft/s 25.8G 1,980ft 8.6s 7s
OK Cesaroni H170 25.7oz 102ft/s 739ft/s 32.3G 1,999ft 8.7s 7s
OK AeroTech H250 26.5oz 120ft/s 819ft/s 42.8G 2,022ft 8.6s 8s
OK Cesaroni H160 27.1oz 93ft/s 730ft/s 23.6G 2,022ft 8.9s 7s
OK AeroTech H180 26.4oz 104ft/s 767ft/s 33.2G 2,029ft 8.7s 7s
OK Cesaroni H135 26.4oz 92ft/s 682ft/s 21.6G 2,044ft 9.0s 7s
OK AeroTech H195 24.4oz 112ft/s 831ft/s 36.5G 2,064ft 8.5s 7s
OK Cesaroni H42 26.0oz 49ft/s 422ft/s 9.3G 2,083ft 10.5s 6s
OK KBA H225 28.6oz 89ft/s 822ft/s 30.8G 2,114ft 9.0s 8s
OK KBA H130 42.5oz 75ft/s 530ft/s 17.6G 2,134ft 10.2s 8s
OK AeroTech H135 25.0oz 87ft/s 677ft/s 20.9G 2,180ft 9.2s 7s
OK Cesaroni H194 27.5oz 103ft/s 802ft/s 35.9G 2,199ft 8.9s 8s
OK Cesaroni H200 27.2oz 109ft/s 815ft/s 37.5G 2,226ft 9.0s 8s
OK Cesaroni H255 25.7oz 133ft/s 921ft/s 51.8G 2,238ft 8.8s 8s
OK Cesaroni H140 27.3oz 109ft/s 740ft/s 31.4G 2,358ft 9.3s 7s
OK Cesaroni H53 27.6oz 59ft/s 501ft/s 11.2G 2,407ft 10.6s 6s
OK AeroTech I205 28.6oz 112ft/s 923ft/s 44.8G 2,624ft 9.3s 7s
warningsW,D Estes F26 20.5oz 5:1 thrust/weight ratio (no data)
warningsW,D Estes G80 21.9oz 13:1 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 (34ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (45ft/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 (45ft/s)
failedG Estes F15 speed at end of launch guide too slow (32ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (44ft/s)
failedG AeroTech F26 speed at end of launch guide too slow (44ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (37ft/s)
failedG Apogee F10 speed at end of launch guide too slow (36ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (42ft/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.)

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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