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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 120 motors that fit and appear to have enough thrust (670 motors didn't fit, 21 motors failed safety checks). 141 motor had thrust curves available and 293 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:   Mad Cow Super DX3
Owner: John Metcalf
Body Diameter: 4.00in
Dry Weight: 59.4oz
MMT Diameter: 38.0mm
MMT Length: 19.00in
CD: 0.75
Web Site:

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 Contrail G130 77.6oz 64ft/s 124ft/s 23.8G 282ft 4.4s 3s
OK Contrail G300 78.6oz 114ft/s 140ft/s 36.3G 284ft 4.2s 4s
OK Contrail G234 78.6oz 102ft/s 156ft/s 23.9G 371ft 4.8s 4s
OK AeroTech G339 65.8oz 92ft/s 185ft/s 19.6G 440ft 5.2s 5s
OK Loki G94 67.9oz 50ft/s 162ft/s 6.0G 457ft 5.6s 4s
OK Contrail G123 77.4oz 62ft/s 172ft/s 15.5G 491ft 5.7s 5s
OK Contrail G100 77.4oz 57ft/s 168ft/s 7.5G 508ft 5.8s 4s
OK Cesaroni G185 66.0oz 64ft/s 199ft/s 10.1G 518ft 5.7s 5s
OK Cesaroni G115 66.3oz 50ft/s 200ft/s 6.1G 584ft 6.3s 5s
OK Contrail H222 77.7oz 87ft/s 208ft/s 30.4G 604ft 6.0s 5s
OK Loki H100 71.2oz 51ft/s 245ft/s 6.2G 899ft 7.6s 6s
warningsW AeroTech H283 68.1oz 84ft/s 305ft/s 16.6G 949ft 7.3s 7s
OK AeroTech H148 70.3oz 62ft/s 284ft/s 8.9G 1,002ft 7.8s 6s
OK AeroTech H130 67.8oz 76ft/s 277ft/s 12.8G 1,018ft 7.7s 6s
OK AeroTech H669 68.3oz 132ft/s 361ft/s 57.3G 1,071ft 7.4s 7s
OK AeroTech H123 69.1oz 53ft/s 272ft/s 6.7G 1,094ft 8.3s 6s
OK AeroTech H100 68.6oz 49ft/s 275ft/s 5.7G 1,096ft 8.4s 6s
OK Loki H90 71.2oz 53ft/s 265ft/s 6.4G 1,116ft 8.5s 6s
OK Cesaroni H123 69.9oz 49ft/s 307ft/s 6.5G 1,126ft 8.4s 6s
OK Loki H144 71.3oz 70ft/s 305ft/s 11.5G 1,142ft 8.1s 6s
OK AeroTech H219 68.6oz 78ft/s 341ft/s 14.3G 1,148ft 8.0s 7s
OK Loki H125 71.5oz 63ft/s 292ft/s 9.3G 1,149ft 8.3s 6s
OK Cesaroni H143 71.6oz 51ft/s 317ft/s 7.0G 1,151ft 8.4s 7s
OK AeroTech H242 68.7oz 70ft/s 343ft/s 11.4G 1,207ft 8.2s 7s
OK Loki H160 71.2oz 75ft/s 331ft/s 13.6G 1,233ft 8.3s 7s
OK Cesaroni H400 69.4oz 94ft/s 399ft/s 21.8G 1,252ft 8.1s 7s
OK Cesaroni H120 69.8oz 52ft/s 327ft/s 6.6G 1,282ft 8.9s 7s
OK Cesaroni H125 69.7oz 51ft/s 342ft/s 6.6G 1,316ft 8.9s 7s
OK Cesaroni H152 69.9oz 58ft/s 361ft/s 9.9G 1,381ft 8.9s 7s
OK Cesaroni H225 66.2oz 73ft/s 408ft/s 13.0G 1,388ft 8.5s 7s
OK AeroTech H178 70.8oz 58ft/s 382ft/s 9.7G 1,398ft 8.9s 7s
OK AeroTech H550 70.5oz 119ft/s 486ft/s 32.2G 1,519ft 8.5s 8s
OK AeroTech H550 70.8oz 118ft/s 481ft/s 31.9G 1,520ft 8.6s 8s
warningsW Cesaroni H565 72.2oz 111ft/s 489ft/s 29.9G 1,537ft 8.6s 8s
OK AeroTech H999 71.1oz 158ft/s 510ft/s 80.4G 1,540ft 8.5s 8s
OK AeroTech I218 72.5oz 76ft/s 417ft/s 13.2G 1,544ft 9.0s 8s
OK AeroTech H170 71.0oz 63ft/s 401ft/s 9.2G 1,568ft 9.3s 7s
OK AeroTech I180 73.0oz 84ft/s 389ft/s 16.9G 1,586ft 9.1s 7s
OK AeroTech I161 72.3oz 64ft/s 396ft/s 9.8G 1,627ft 9.4s 7s
OK Cesaroni I180 73.3oz 59ft/s 428ft/s 9.0G 1,645ft 9.5s 7s
OK AeroTech I175 71.7oz 71ft/s 399ft/s 11.6G 1,646ft 9.5s 8s
OK AeroTech I140 72.0oz 59ft/s 384ft/s 7.9G 1,678ft 9.7s 7s
OK AeroTech I245 72.3oz 88ft/s 449ft/s 19.5G 1,693ft 9.2s 8s
OK AeroTech I357 71.5oz 88ft/s 472ft/s 18.1G 1,702ft 9.2s 8s
OK AeroTech I225 76.5oz 64ft/s 441ft/s 11.6G 1,703ft 9.5s 8s
OK Cesaroni I212 76.2oz 64ft/s 457ft/s 10.5G 1,732ft 9.6s 8s
OK Cesaroni I566 73.0oz 110ft/s 556ft/s 29.3G 1,755ft 9.1s 8s
OK AeroTech I154 76.8oz 53ft/s 386ft/s 6.9G 1,849ft 10.5s 7s
OK Cesaroni I345 73.3oz 87ft/s 545ft/s 18.1G 1,897ft 9.5s 8s
OK Cesaroni I800 75.5oz 125ft/s 620ft/s 40.0G 1,906ft 9.3s 9s
OK Cesaroni I195 74.1oz 65ft/s 474ft/s 10.5G 1,908ft 10.0s 8s
OK AeroTech I1299 74.3oz 175ft/s 651ft/s 72.4G 1,930ft 9.2s 9s
OK AeroTech I285 76.8oz 82ft/s 518ft/s 16.7G 1,931ft 9.7s 8s
OK Cesaroni I170 73.2oz 64ft/s 484ft/s 10.0G 1,963ft 10.1s 8s
OK Cesaroni I175 74.8oz 61ft/s 473ft/s 8.1G 1,979ft 10.3s 8s
OK Cesaroni I236 73.5oz 74ft/s 512ft/s 14.2G 1,984ft 10.0s 8s
OK AeroTech I305 79.9oz 87ft/s 529ft/s 17.3G 2,004ft 9.8s 8s
OK AeroTech I300 75.0oz 91ft/s 543ft/s 21.3G 2,036ft 9.8s 8s
OK Cesaroni I223 76.8oz 67ft/s 518ft/s 10.9G 2,038ft 10.1s 8s
OK AeroTech I211 75.4oz 77ft/s 493ft/s 14.3G 2,039ft 10.1s 8s
OK AeroTech I195 79.6oz 79ft/s 488ft/s 15.3G 2,056ft 10.1s 8s
OK Loki I316 78.4oz 100ft/s 559ft/s 21.9G 2,147ft 10.0s 9s
OK Cesaroni I287 80.7oz 74ft/s 579ft/s 13.7G 2,202ft 10.3s 9s
OK Loki I405 78.6oz 126ft/s 610ft/s 35.8G 2,215ft 9.9s 9s
OK Loki I210 78.4oz 87ft/s 523ft/s 19.3G 2,260ft 10.4s 8s
warningsW Loki I110 80.2oz 56ft/s 435ft/s 10.9G 2,287ft 11.3s 7s
OK Cesaroni I285 77.2oz 80ft/s 595ft/s 15.4G 2,314ft 10.5s 9s
OK Loki I430 78.4oz 99ft/s 665ft/s 23.4G 2,325ft 10.2s 9s
OK Loki I377 79.2oz 106ft/s 612ft/s 28.9G 2,325ft 10.2s 9s
OK Cesaroni I255 77.6oz 76ft/s 587ft/s 13.6G 2,354ft 10.6s 9s
OK AeroTech I366 79.0oz 97ft/s 638ft/s 21.3G 2,366ft 10.3s 9s
OK Cesaroni I470 76.9oz 107ft/s 699ft/s 25.1G 2,368ft 10.1s 9s
OK AeroTech I327 81.6oz 88ft/s 630ft/s 18.1G 2,371ft 10.4s 9s
OK AeroTech I364 83.3oz 85ft/s 622ft/s 16.6G 2,384ft 10.4s 9s
OK AMW I297 80.2oz 79ft/s 621ft/s 15.8G 2,390ft 10.5s 9s
OK Cesaroni I303 77.0oz 85ft/s 629ft/s 18.3G 2,419ft 10.5s 9s
OK AeroTech I280 81.1oz 79ft/s 624ft/s 14.0G 2,459ft 10.7s 9s
OK AeroTech I435 77.7oz 120ft/s 700ft/s 34.0G 2,464ft 10.2s 9s
OK Cesaroni I242 78.8oz 72ft/s 598ft/s 12.0G 2,483ft 10.9s 8s
OK KBA I550 84.5oz 100ft/s 725ft/s 25.8G 2,493ft 10.5s 9s
OK AeroTech I59 76.6oz 53ft/s 300ft/s 6.8G 2,519ft 13.5s 5s
OK Cesaroni I350 87.0oz 83ft/s 660ft/s 15.6G 2,537ft 10.8s 9s
OK AeroTech I284 79.0oz 95ft/s 655ft/s 21.0G 2,545ft 10.6s 9s
OK KBA I301 85.0oz 77ft/s 626ft/s 16.1G 2,546ft 10.9s 9s
OK AeroTech I500 79.7oz 103ft/s 756ft/s 25.0G 2,610ft 10.5s 9s
warningsW Cesaroni I540 80.5oz 110ft/s 786ft/s 27.2G 2,628ft 10.4s 9s
OK AeroTech I600 80.6oz 122ft/s 779ft/s 35.6G 2,633ft 10.4s 9s
OK Cesaroni I125 82.2oz 61ft/s 462ft/s 10.7G 2,656ft 12.0s 7s
OK KBA J520 84.9oz 102ft/s 757ft/s 29.2G 2,666ft 10.7s 9s
OK KBA J740 84.9oz 122ft/s 833ft/s 38.1G 2,680ft 10.5s 10s
OK Loki J396 85.9oz 88ft/s 720ft/s 20.9G 2,694ft 10.8s 9s
OK AeroTech I350 81.1oz 90ft/s 740ft/s 20.3G 2,698ft 10.8s 9s
OK AeroTech J420 82.3oz 98ft/s 732ft/s 23.4G 2,700ft 10.8s 9s
OK AeroTech J350 82.9oz 117ft/s 734ft/s 34.8G 2,704ft 10.6s 9s
OK Cesaroni J381 83.7oz 96ft/s 724ft/s 20.8G 2,725ft 10.8s 9s
OK AeroTech J340 79.8oz 103ft/s 718ft/s 26.1G 2,731ft 10.7s 9s
OK Cesaroni J335 81.5oz 90ft/s 706ft/s 17.2G 2,739ft 10.9s 9s
OK Cesaroni J357 80.6oz 91ft/s 732ft/s 22.0G 2,763ft 10.9s 9s
OK Cesaroni J285 80.4oz 82ft/s 683ft/s 15.2G 2,782ft 11.1s 9s
OK AeroTech J425 81.7oz 85ft/s 786ft/s 18.3G 2,802ft 10.9s 9s
OK Cesaroni I216 80.6oz 75ft/s 614ft/s 14.1G 2,804ft 11.4s 8s
OK Cesaroni J270 82.5oz 73ft/s 671ft/s 11.8G 2,807ft 11.3s 9s
OK Cesaroni J316 80.8oz 88ft/s 691ft/s 18.5G 2,809ft 11.1s 9s
OK Cesaroni J400 84.2oz 91ft/s 758ft/s 19.1G 2,850ft 11.0s 9s
OK Loki J474 86.1oz 130ft/s 732ft/s 49.0G 2,855ft 10.8s 9s
OK AeroTech J500 82.5oz 122ft/s 810ft/s 33.6G 2,884ft 10.8s 9s
OK Cesaroni J290 82.7oz 81ft/s 695ft/s 16.1G 2,885ft 11.3s 9s
OK Loki J528 85.7oz 125ft/s 846ft/s 41.9G 2,903ft 10.8s 10s
OK AeroTech J575 91.6oz 122ft/s 855ft/s 33.4G 2,944ft 10.8s 9s
OK AeroTech J270 82.0oz 81ft/s 697ft/s 14.7G 2,951ft 11.4s 9s
OK Loki J712 85.9oz 118ft/s 920ft/s 35.8G 3,047ft 10.9s 10s
OK AeroTech J435 81.4oz 112ft/s 837ft/s 29.5G 3,052ft 11.0s 9s
OK Loki J326 86.4oz 112ft/s 687ft/s 39.6G 3,052ft 11.4s 9s
OK Cesaroni J410 85.3oz 95ft/s 805ft/s 20.5G 3,071ft 11.3s 9s
OK Cesaroni J425 84.1oz 101ft/s 820ft/s 27.7G 3,077ft 11.1s 9s
OK Cesaroni J94 82.7oz 48ft/s 435ft/s 6.1G 3,090ft 13.8s 7s
OK Cesaroni J330 84.2oz 89ft/s 763ft/s 18.7G 3,094ft 11.4s 9s
OK Cesaroni J354 86.8oz 91ft/s 773ft/s 20.6G 3,227ft 11.5s 9s
OK AeroTech J825 90.3oz 132ft/s 1,055ft/s 45.9G 3,349ft 11.1s 10s
OK AeroTech J570 91.2oz 130ft/s 926ft/s 44.5G 3,611ft 11.6s 10s

W Motor total weight unknown, lift-off Weight not accurate.

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 AeroTech G67 speed at end of launch guide too slow (41ft/s)
failedG Loki G69 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (39ft/s)
failedG Loki G70 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (38ft/s)
failedG Loki G80 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (37ft/s)
failedG Loki G66 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (39ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (29ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (37ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (47ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (38ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (31ft/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.)

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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