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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 79 motors that fit and appear to have enough thrust (677 motors didn't fit, 35 motors failed safety checks). 112 motor had thrust curves available and 223 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:   Mega Der Red Max
Owner: Louie Berlin
Body Diameter: 4.00in
Dry Weight: 2.07lb
MMT Diameter: 29.0mm
MMT Length: 30.00in
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 F120 2.30lb 66ft/s 158ft/s 12.9G 312ft 4.4s 4s
OK AeroTech F50 2.26lb 48ft/s 167ft/s 6.2G 420ft 5.3s 4s
OK AeroTech F52 2.34lb 49ft/s 167ft/s 6.6G 439ft 5.4s 4s
warningsW Estes F50 2.25lb 51ft/s 184ft/s 6.8G 490ft 5.6s 4s
OK AeroTech G54 2.37lb 50ft/s 183ft/s 6.7G 499ft 5.7s 4s
OK Cesaroni G88 2.41lb 53ft/s 212ft/s 9.9G 524ft 5.7s 5s
OK AeroTech G104 2.37lb 63ft/s 216ft/s 10.5G 542ft 5.6s 5s
OK AeroTech G74 2.26lb 52ft/s 220ft/s 7.9G 557ft 5.9s 5s
OK AeroTech G53 2.39lb 52ft/s 195ft/s 7.1G 585ft 6.1s 4s
OK Cesaroni G80 2.39lb 50ft/s 233ft/s 8.3G 608ft 6.1s 5s
OK AeroTech G77 2.34lb 52ft/s 251ft/s 8.1G 674ft 6.3s 5s
OK AeroTech G79 2.42lb 54ft/s 249ft/s 8.1G 700ft 6.5s 5s
OK Cesaroni G83 2.39lb 55ft/s 253ft/s 8.4G 704ft 6.4s 5s
OK Cesaroni G57 2.39lb 50ft/s 226ft/s 7.3G 717ft 6.7s 5s
OK Cesaroni G250 2.38lb 91ft/s 310ft/s 25.8G 723ft 6.1s 6s
OK Cesaroni G126 2.39lb 67ft/s 295ft/s 13.9G 769ft 6.4s 5s
OK AeroTech G76 2.39lb 67ft/s 247ft/s 13.1G 769ft 6.6s 5s
OK AeroTech G64 2.40lb 57ft/s 242ft/s 9.1G 792ft 6.8s 4s
OK AeroTech G75 2.36lb 53ft/s 266ft/s 8.6G 806ft 6.8s 5s
OK Cesaroni G131 2.51lb 63ft/s 308ft/s 12.2G 811ft 6.6s 6s
OK AeroTech G78 2.35lb 53ft/s 282ft/s 8.6G 821ft 6.8s 5s
OK AeroTech G125 2.35lb 65ft/s 323ft/s 12.9G 837ft 6.6s 6s
OK AeroTech G80 2.35lb 57ft/s 291ft/s 8.9G 870ft 6.9s 5s
OK Cesaroni G106 2.48lb 55ft/s 323ft/s 10.9G 901ft 7.0s 6s
OK KBA G135 2.57lb 61ft/s 344ft/s 12.2G 925ft 7.0s 6s
OK AeroTech H165 2.51lb 75ft/s 386ft/s 15.8G 1,030ft 7.1s 6s
OK Cesaroni G125 2.50lb 67ft/s 366ft/s 13.5G 1,034ft 7.2s 6s
OK Cesaroni G118 2.48lb 61ft/s 363ft/s 13.1G 1,038ft 7.3s 6s
OK Cesaroni H410 2.47lb 120ft/s 457ft/s 45.6G 1,045ft 6.9s 6s
OK Cesaroni H175 2.61lb 75ft/s 399ft/s 17.2G 1,045ft 7.1s 6s
OK Cesaroni H133 2.49lb 69ft/s 374ft/s 16.3G 1,058ft 7.3s 6s
OK Cesaroni H163 2.48lb 74ft/s 402ft/s 18.7G 1,072ft 7.2s 6s
OK Cesaroni G54 2.50lb 60ft/s 269ft/s 9.9G 1,084ft 7.9s 5s
OK AeroTech G138 2.40lb 65ft/s 416ft/s 14.3G 1,084ft 7.3s 6s
OK Cesaroni H90 2.43lb 61ft/s 346ft/s 13.4G 1,094ft 7.5s 6s
OK AeroTech H128 2.52lb 73ft/s 392ft/s 15.0G 1,096ft 7.3s 6s
OK AeroTech H238 2.50lb 84ft/s 420ft/s 19.8G 1,097ft 7.2s 6s
OK Cesaroni H87 2.52lb 55ft/s 341ft/s 10.4G 1,106ft 7.7s 6s
OK RATT H70 2.85lb 60ft/s 304ft/s 9.7G 1,117ft 7.9s 5s
OK Cesaroni H123 2.57lb 60ft/s 388ft/s 11.2G 1,122ft 7.6s 6s
OK Cesaroni H54 2.53lb 52ft/s 275ft/s 8.0G 1,135ft 8.2s 5s
OK AeroTech H115 2.52lb 61ft/s 382ft/s 9.9G 1,146ft 7.6s 6s
OK Cesaroni H118 2.58lb 66ft/s 387ft/s 13.8G 1,188ft 7.7s 6s
OK AeroTech H97 2.68lb 54ft/s 365ft/s 8.1G 1,189ft 8.0s 6s
OK Cesaroni H237 2.72lb 84ft/s 482ft/s 21.2G 1,234ft 7.5s 7s
OK AeroTech H220 2.62lb 90ft/s 478ft/s 25.3G 1,247ft 7.5s 6s
OK AeroTech H210 2.61lb 83ft/s 482ft/s 20.3G 1,268ft 7.6s 7s
OK Cesaroni H151 2.59lb 75ft/s 440ft/s 16.6G 1,280ft 7.7s 6s
OK Cesaroni H170 2.58lb 84ft/s 471ft/s 19.7G 1,322ft 7.7s 6s
OK AeroTech H182 2.53lb 72ft/s 494ft/s 15.4G 1,322ft 7.7s 6s
OK Cesaroni H160 2.67lb 74ft/s 469ft/s 14.6G 1,332ft 7.9s 6s
OK Cesaroni H135 2.62lb 68ft/s 440ft/s 13.2G 1,341ft 8.0s 6s
OK KBA H130 3.63lb 63ft/s 374ft/s 12.6G 1,349ft 8.5s 7s
OK AeroTech H180 2.63lb 81ft/s 492ft/s 20.5G 1,355ft 7.8s 6s
OK AeroTech H250 2.63lb 98ft/s 525ft/s 26.5G 1,357ft 7.7s 7s
OK AeroTech H195 2.50lb 87ft/s 530ft/s 21.8G 1,406ft 7.8s 7s
OK KBA H225 2.77lb 76ft/s 532ft/s 19.7G 1,406ft 7.9s 7s
OK Cesaroni H295 2.82lb 97ft/s 567ft/s 27.0G 1,414ft 7.8s 7s
OK AeroTech H135 2.54lb 67ft/s 438ft/s 12.5G 1,431ft 8.2s 6s
OK Cesaroni H194 2.70lb 83ft/s 524ft/s 22.5G 1,484ft 8.0s 7s
OK Cesaroni H180 2.76lb 84ft/s 514ft/s 21.0G 1,489ft 8.1s 7s
OK Cesaroni H200 2.67lb 86ft/s 532ft/s 23.4G 1,506ft 8.0s 7s
OK Cesaroni H399 2.72lb 125ft/s 652ft/s 44.2G 1,526ft 7.8s 7s
OK Cesaroni H340 2.93lb 104ft/s 620ft/s 33.1G 1,530ft 7.9s 7s
OK Cesaroni H255 2.58lb 101ft/s 594ft/s 31.8G 1,533ft 7.9s 7s
OK Cesaroni H140 2.68lb 83ft/s 488ft/s 19.6G 1,584ft 8.4s 6s
OK AeroTech H268 2.86lb 93ft/s 613ft/s 24.8G 1,656ft 8.2s 7s
OK Cesaroni H226 2.86lb 93ft/s 585ft/s 26.5G 1,657ft 8.2s 7s
OK Cesaroni H233 2.79lb 94ft/s 604ft/s 26.4G 1,684ft 8.2s 7s
OK Cesaroni H159 2.83lb 72ft/s 527ft/s 13.8G 1,690ft 8.6s 7s
OK Cesaroni H255 2.77lb 106ft/s 631ft/s 32.5G 1,694ft 8.2s 7s
OK Cesaroni H160 2.77lb 91ft/s 535ft/s 24.7G 1,752ft 8.6s 6s
OK AeroTech I200 2.86lb 88ft/s 577ft/s 22.9G 1,755ft 8.5s 7s
OK Cesaroni I204 2.84lb 93ft/s 605ft/s 27.3G 1,829ft 8.5s 7s
OK AeroTech I205 2.76lb 84ft/s 617ft/s 28.6G 1,833ft 8.5s 7s
OK Cesaroni I224 2.89lb 103ft/s 658ft/s 32.8G 1,937ft 8.6s 7s
OK Cesaroni I243 2.95lb 101ft/s 648ft/s 32.3G 1,939ft 8.6s 7s
OK KBA J520 3.66lb 118ft/s 983ft/s 42.8G 2,572ft 9.5s 8s
warningsW,D Estes G80 2.35lb 7:1 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 (21ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (32ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (25ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (34ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (31ft/s)
failedG Estes F15 speed at end of launch guide too slow (18ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (34ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (34ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (30ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni F59 speed at end of launch guide too slow (46ft/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 (30ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (26ft/s)
failedG Apogee F10 speed at end of launch guide too slow (22ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (41ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (37ft/s)
failedG Estes G40 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (45ft/s)
failedG KBA G82 speed at end of launch guide too slow (48ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (46ft/s)
failedG RATT I80 speed at end of launch guide too slow (47ft/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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