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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 37 motors that fit and appear to have enough thrust (731 motors didn't fit, 31 motors failed safety checks). 68 motor had thrust curves available and 123 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:   Madcow 4 inch V2 54mm
Owner: James Cramton
Body Diameter: 4.00in
Dry Weight: 4,730g
MMT Diameter: 54.0mm
MMT Length: 15.00in
CD: 0.30

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 AeroTech I599 5,242g 79ft/s 237ft/s 13.9G 881ft 7.6s 7s
OK Cesaroni I445 5,305g 59ft/s 264ft/s 9.3G 1,130ft 8.8s 8s
OK AeroTech J315 5,581g 49ft/s 368ft/s 6.0G 2,298ft 12.8s 10s
OK Cesaroni J1055 5,502g 91ft/s 428ft/s 20.4G 2,454ft 12.3s 12s
OK Cesaroni J430 5,530g 59ft/s 430ft/s 8.6G 2,758ft 13.5s 12s
OK AeroTech J460 5,519g 62ft/s 443ft/s 9.3G 2,917ft 13.8s 12s
OK AeroTech J1299 5,564g 108ft/s 491ft/s 26.3G 3,049ft 13.5s 13s
OK AMW J400 6,112g 49ft/s 461ft/s 7.4G 3,202ft 14.7s 12s
OK Loki J350 5,990g 48ft/s 459ft/s 6.9G 3,225ft 14.8s 12s
OK AMW J1365 5,849g 102ft/s 515ft/s 26.5G 3,315ft 14.0s 13s
OK AMW J475 6,140g 56ft/s 501ft/s 9.6G 3,556ft 15.2s 13s
OK Gorilla J395 5,890g 49ft/s 502ft/s 7.2G 3,652ft 15.7s 13s
OK Gorilla J465 5,912g 54ft/s 518ft/s 10.8G 3,739ft 15.5s 13s
OK AeroTech J450 5,953g 54ft/s 520ft/s 8.5G 3,784ft 15.7s 13s
OK AMW J395 5,998g 54ft/s 508ft/s 7.0G 3,823ft 16.0s 13s
OK AMW J325 5,960g 57ft/s 487ft/s 8.2G 3,859ft 16.1s 13s
OK Gorilla J485 5,920g 56ft/s 539ft/s 9.2G 3,947ft 15.9s 14s
OK AMW J440 5,959g 75ft/s 547ft/s 12.7G 4,131ft 15.9s 14s
OK Gorilla J535 5,955g 68ft/s 559ft/s 10.6G 4,154ft 16.1s 14s
OK AeroTech J1799 5,841g 121ft/s 606ft/s 36.4G 4,164ft 15.4s 15s
OK Loki J525 5,970g 62ft/s 566ft/s 10.6G 4,180ft 16.2s 14s
OK Cesaroni J1520 5,756g 110ft/s 609ft/s 29.9G 4,211ft 15.6s 15s
OK AeroTech J401 5,642g 56ft/s 558ft/s 7.7G 4,308ft 16.6s 14s
OK Loki J820 5,940g 83ft/s 596ft/s 17.5G 4,398ft 16.1s 15s
OK Loki J300 6,045g 50ft/s 522ft/s 5.8G 4,412ft 17.5s 13s
OK AeroTech J540 5,814g 68ft/s 587ft/s 10.9G 4,470ft 16.6s 14s
OK Cesaroni J355 5,905g 52ft/s 553ft/s 6.6G 4,479ft 17.3s 14s
OK Cesaroni J295 5,849g 53ft/s 530ft/s 6.6G 4,516ft 17.5s 13s
OK AMW J745 5,950g 77ft/s 620ft/s 14.1G 4,670ft 16.7s 15s
OK AeroTech J415 5,898g 56ft/s 601ft/s 8.7G 4,984ft 17.8s 14s
OK Cesaroni K360 5,962g 49ft/s 599ft/s 6.1G 4,990ft 18.2s 15s
OK Cesaroni J449 5,852g 59ft/s 622ft/s 8.8G 5,027ft 17.8s 15s
OK AeroTech J800 5,816g 80ft/s 658ft/s 15.7G 5,126ft 17.4s 15s
OK AeroTech K400 5,924g 61ft/s 609ft/s 8.3G 5,154ft 18.1s 15s
OK Cesaroni J760 5,807g 79ft/s 673ft/s 14.8G 5,199ft 17.5s 16s
OK AeroTech K2050 6,022g 122ft/s 767ft/s 36.4G 5,819ft 17.9s 17s
OK AeroTech K535 5,994g 65ft/s 690ft/s 9.9G 5,864ft 18.8s 16s

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 I117 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni I140 speed at end of launch guide too slow (29ft/s)
failedG AeroTech I215 speed at end of launch guide too slow (42ft/s)
failedG AeroTech I229 speed at end of launch guide too slow (42ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (26ft/s)
failedG AeroTech I170 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni I150 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni I218 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni I120 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni I165 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni I100 speed at end of launch guide too slow (38ft/s)
failedG AeroTech I65 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni J250 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni J145 speed at end of launch guide too slow (41ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (47ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni J280 speed at end of launch guide too slow (42ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (39ft/s)
failedG AeroTech J180 speed at end of launch guide too slow (47ft/s)
failedG AeroTech J275 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni J240 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni J210 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni J293 speed at end of launch guide too slow (46ft/s)
failedG Gorilla J365 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni J244 speed at end of launch guide too slow (40ft/s)
failedG Gorilla J167 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni J360 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni J380 speed at end of launch guide too slow (47ft/s)
failedG AeroTech J135 speed at end of launch guide too slow (36ft/s)
failedG Loki J175 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni J140 speed at end of launch guide too slow (33ft/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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