Search for Motors Automatically Find Motors Login or Edit Settings Data File Outbox ThrustCurve.org home ThrustCurve.org

Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 19 motors that fit and appear to have enough thrust (760 motors didn't fit, 12 motors failed safety checks). 31 motor had thrust curves available and 59 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 V2
Owner: Rodney Earp
Body Diameter: 4.00in
Dry Weight: 4.00lb
MMT Diameter: 54.0mm
MMT Length: 12.00in
CD: 24.00

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 I218 5.28lb 61ft/s 142ft/s 9.5G 315ft 3.8s 2s
OK Cesaroni I150 5.26lb 49ft/s 114ft/s 6.5G 343ft 4.6s 1s
OK Cesaroni I165 5.31lb 53ft/s 119ft/s 6.6G 371ft 4.7s 1s
OK Cesaroni J430 5.76lb 84ft/s 201ft/s 19.4G 398ft 3.6s 2s
OK AeroTech J460 5.74lb 89ft/s 213ft/s 19.4G 399ft 3.6s 1s
OK Cesaroni J280 6.10lb 60ft/s 164ft/s 8.6G 401ft 4.2s 2s
OK Cesaroni J250 5.83lb 56ft/s 153ft/s 9.3G 406ft 4.4s 1s
OK AeroTech J250 6.00lb 59ft/s 159ft/s 8.7G 413ft 4.3s 2s
OK AeroTech J315 5.88lb 69ft/s 175ft/s 11.3G 414ft 4.1s 2s
OK AeroTech J250 5.56lb 70ft/s 164ft/s 11.5G 416ft 4.3s 1s
OK Cesaroni J293 5.85lb 65ft/s 165ft/s 12.6G 462ft 4.4s 2s
OK Cesaroni J240 5.93lb 59ft/s 154ft/s 9.3G 477ft 4.8s 1s
OK Cesaroni I100 5.78lb 59ft/s 116ft/s 10.8G 482ft 9.0s 0s
OK AeroTech J275 5.91lb 64ft/s 168ft/s 9.8G 483ft 4.8s 1s
OK Cesaroni J145 5.85lb 61ft/s 130ft/s 17.7G 493ft 6.0s 1s
OK AeroTech J180 5.78lb 68ft/s 158ft/s 11.4G 502ft 5.5s 1s
OK Cesaroni J244 6.01lb 57ft/s 148ft/s 8.8G 505ft 5.1s 2s
OK Cesaroni J210 5.86lb 62ft/s 146ft/s 11.5G 531ft 5.5s 1s
OK AeroTech I65 5.66lb 52ft/s 102ft/s 6.3G 533ft 8.5s 0s

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 (40ft/s)
failedG Cesaroni I140 speed at end of launch guide too slow (46ft/s)
failedA AeroTech I215 rocket doesn't reach a safe altitude (259ft)
failedA AeroTech I599 rocket doesn't reach a safe altitude (191ft)
failedA AeroTech I229 rocket doesn't reach a safe altitude (261ft)
failedG AeroTech I115 speed at end of launch guide too slow (42ft/s)
failedA AeroTech I170 rocket doesn't reach a safe altitude (283ft)
failedA Cesaroni I445 rocket doesn't reach a safe altitude (242ft)
failedG Cesaroni I120 speed at end of launch guide too slow (45ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (43ft/s)
failedA Cesaroni J1055 rocket doesn't reach a safe altitude (269ft)
failedA AeroTech J1299 rocket doesn't reach a safe altitude (281ft)

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.)

A The minimum altitude check is used to ensure that the rocket flies high enough to ensure time for a safe recovery. In addition, many barometric altimeters require a minimum altitude to detect lift-off. (The minimum altitude is 10m or 33ft for an A motor and doubles for each impulse class).

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).

---
ThrustCurve.org home