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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 74 motors that fit and appear to have enough thrust (679 motors didn't fit, 38 motors failed safety checks). 110 motor had thrust curves available and 217 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 Mega Der Red Max
Owner: John Sigmon
Body Diameter: 4.00in
Dry Weight: 2.60lb
MMT Diameter: 29.0mm
MMT Length: 15.00in
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 F120 2.83lb 66ft/s 127ft/s 10.4G 234ft 4.0s 3s
warningsW Estes F50 2.78lb 48ft/s 148ft/s 5.3G 385ft 5.2s 4s
OK Cesaroni G88 2.94lb 52ft/s 173ft/s 7.9G 425ft 5.3s 4s
OK AeroTech G104 2.90lb 60ft/s 177ft/s 8.4G 444ft 5.3s 4s
OK AeroTech G74 2.79lb 50ft/s 178ft/s 6.3G 453ft 5.5s 4s
OK AeroTech G53 2.92lb 49ft/s 160ft/s 5.6G 475ft 5.8s 4s
OK Cesaroni G80 2.92lb 48ft/s 191ft/s 6.6G 504ft 5.8s 5s
OK AeroTech G77 2.87lb 50ft/s 206ft/s 6.6G 571ft 6.1s 5s
OK AeroTech G79 2.95lb 51ft/s 207ft/s 6.5G 597ft 6.3s 5s
OK Cesaroni G83 2.92lb 54ft/s 210ft/s 6.7G 601ft 6.2s 5s
OK Cesaroni G250 2.91lb 90ft/s 255ft/s 21.1G 643ft 6.0s 6s
OK AeroTech G76 2.92lb 66ft/s 208ft/s 10.6G 669ft 6.4s 5s
OK Cesaroni G126 2.92lb 66ft/s 245ft/s 11.2G 680ft 6.3s 5s
OK AeroTech G64 2.93lb 56ft/s 204ft/s 7.3G 686ft 6.7s 4s
OK AeroTech G75 2.89lb 52ft/s 223ft/s 6.8G 705ft 6.7s 5s
OK AeroTech G78 2.88lb 52ft/s 235ft/s 6.9G 725ft 6.7s 5s
OK Cesaroni G131 3.04lb 62ft/s 257ft/s 9.9G 726ft 6.6s 5s
OK AeroTech G125 2.88lb 64ft/s 269ft/s 10.6G 757ft 6.6s 6s
OK AeroTech G80 2.88lb 55ft/s 245ft/s 7.1G 778ft 6.9s 5s
OK Cesaroni G106 3.01lb 55ft/s 272ft/s 8.8G 815ft 7.0s 6s
OK KBA G135 3.10lb 61ft/s 290ft/s 10.2G 847ft 7.0s 6s
OK Cesaroni G125 3.03lb 66ft/s 312ft/s 11.0G 969ft 7.4s 6s
OK Cesaroni G118 3.01lb 60ft/s 309ft/s 10.6G 970ft 7.5s 6s
OK AeroTech H165 3.04lb 73ft/s 328ft/s 13.0G 974ft 7.3s 6s
OK Cesaroni G54 3.03lb 57ft/s 233ft/s 8.0G 982ft 8.0s 5s
OK Cesaroni H175 3.14lb 73ft/s 338ft/s 14.7G 993ft 7.3s 6s
OK Cesaroni H133 3.02lb 69ft/s 320ft/s 13.3G 997ft 7.4s 6s
OK Cesaroni H410 3.00lb 120ft/s 381ft/s 37.8G 1,015ft 7.1s 7s
OK Cesaroni H163 3.01lb 75ft/s 342ft/s 15.2G 1,021ft 7.4s 6s
OK Cesaroni H90 2.96lb 59ft/s 300ft/s 10.8G 1,023ft 7.7s 6s
OK Cesaroni H87 3.05lb 54ft/s 296ft/s 8.4G 1,029ft 7.9s 6s
OK Cesaroni H54 3.06lb 50ft/s 240ft/s 6.4G 1,029ft 8.3s 5s
OK AeroTech G138 2.93lb 64ft/s 352ft/s 12.2G 1,035ft 7.5s 6s
OK AeroTech H128 3.05lb 71ft/s 336ft/s 12.3G 1,045ft 7.5s 6s
OK AeroTech H238 3.03lb 82ft/s 358ft/s 16.4G 1,057ft 7.4s 6s
OK Cesaroni H123 3.10lb 59ft/s 334ft/s 9.1G 1,065ft 7.8s 6s
OK AeroTech H115 3.05lb 59ft/s 331ft/s 8.0G 1,090ft 7.8s 6s
OK AeroTech H97 3.21lb 53ft/s 319ft/s 6.6G 1,123ft 8.2s 6s
OK Cesaroni H118 3.11lb 66ft/s 337ft/s 11.3G 1,137ft 7.9s 6s
OK Cesaroni H237 3.25lb 84ft/s 414ft/s 17.7G 1,218ft 7.8s 7s
OK AeroTech H220 3.15lb 87ft/s 412ft/s 20.9G 1,232ft 7.8s 7s
OK AeroTech H210 3.14lb 82ft/s 417ft/s 17.1G 1,254ft 7.9s 7s
OK Cesaroni H151 3.12lb 73ft/s 385ft/s 13.6G 1,254ft 8.0s 7s
OK KBA H130 4.16lb 62ft/s 334ft/s 10.9G 1,285ft 8.6s 7s
OK Cesaroni H170 3.11lb 82ft/s 410ft/s 16.2G 1,308ft 8.1s 7s
OK Cesaroni H160 3.20lb 71ft/s 410ft/s 12.0G 1,313ft 8.2s 7s
OK AeroTech H182 3.06lb 74ft/s 429ft/s 12.8G 1,314ft 8.1s 7s
OK Cesaroni H135 3.15lb 68ft/s 388ft/s 10.8G 1,314ft 8.3s 7s
OK AeroTech H180 3.16lb 81ft/s 430ft/s 17.1G 1,351ft 8.2s 7s
OK AeroTech H250 3.16lb 100ft/s 457ft/s 21.9G 1,364ft 8.1s 7s
OK AeroTech H135 3.07lb 64ft/s 390ft/s 10.3G 1,407ft 8.6s 7s
OK KBA H225 3.30lb 75ft/s 463ft/s 16.8G 1,409ft 8.4s 7s
OK AeroTech H195 3.03lb 87ft/s 465ft/s 17.8G 1,421ft 8.2s 7s
OK Cesaroni H295 3.35lb 93ft/s 492ft/s 22.5G 1,436ft 8.2s 7s
OK Cesaroni H180 3.29lb 84ft/s 455ft/s 17.5G 1,498ft 8.5s 7s
OK Cesaroni H194 3.23lb 83ft/s 465ft/s 18.7G 1,498ft 8.5s 7s
OK Cesaroni H200 3.20lb 86ft/s 471ft/s 19.4G 1,524ft 8.5s 7s
OK Cesaroni H255 3.11lb 97ft/s 523ft/s 26.2G 1,572ft 8.4s 7s
OK Cesaroni H340 3.46lb 109ft/s 543ft/s 27.9G 1,575ft 8.4s 8s
OK Cesaroni H399 3.25lb 118ft/s 567ft/s 36.8G 1,581ft 8.4s 8s
OK Cesaroni H140 3.21lb 77ft/s 439ft/s 16.2G 1,589ft 8.8s 7s
OK Cesaroni H226 3.39lb 90ft/s 520ft/s 22.2G 1,701ft 8.8s 7s
OK AeroTech H268 3.39lb 97ft/s 547ft/s 20.8G 1,707ft 8.8s 8s
OK Cesaroni H159 3.36lb 71ft/s 481ft/s 11.5G 1,713ft 9.2s 7s
OK Cesaroni H233 3.32lb 90ft/s 541ft/s 22.0G 1,736ft 8.8s 7s
OK Cesaroni H255 3.30lb 102ft/s 564ft/s 27.1G 1,755ft 8.8s 8s
OK Cesaroni H160 3.30lb 92ft/s 485ft/s 20.5G 1,786ft 9.1s 7s
OK AeroTech I200 3.39lb 90ft/s 523ft/s 19.1G 1,805ft 9.1s 7s
OK Cesaroni I204 3.37lb 90ft/s 551ft/s 22.9G 1,896ft 9.2s 7s
OK AeroTech I205 3.29lb 85ft/s 562ft/s 23.8G 1,903ft 9.1s 7s
OK Cesaroni I224 3.42lb 101ft/s 598ft/s 27.5G 2,021ft 9.3s 8s
OK Cesaroni I243 3.48lb 97ft/s 595ft/s 27.2G 2,025ft 9.3s 8s
OK KBA J520 4.19lb 112ft/s 913ft/s 37.2G 2,762ft 10.2s 9s
warningsW,D Estes G80 2.88lb 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 (17ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (29ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (22ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (31ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (29ft/s)
failedG Estes F15 speed at end of launch guide too slow (13ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (33ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (33ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (28ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni F59 speed at end of launch guide too slow (44ft/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 (28ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (25ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (46ft/s)
failedG Apogee F10 speed at end of launch guide too slow (17ft/s)
failedG AeroTech F50 speed at end of launch guide too slow (46ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (38ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (35ft/s)
failedG Estes G40 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (31ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (44ft/s)
failedG KBA G82 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (44ft/s)

G These simulations were run with a launch guide length of 7ft (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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