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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 28 motors that fit and appear to have enough thrust (760 motors didn't fit, 3 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:   Lil Rascal
Owner: Bradley L Smith
Body Diameter: 4.00in
Dry Weight: 68.6oz
MMT Diameter: 54.0mm
MMT Length: 12.00in
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 I140 88.5oz 49ft/s 371ft/s 5.5G 1,746ft 10.5s 8s
OK AeroTech I215 87.2oz 69ft/s 427ft/s 9.8G 1,760ft 10.0s 8s
OK AeroTech I599 86.7oz 121ft/s 513ft/s 30.8G 1,779ft 9.3s 9s
OK AeroTech I170 87.2oz 57ft/s 409ft/s 7.5G 1,805ft 10.3s 8s
OK AeroTech I229 86.7oz 68ft/s 454ft/s 10.3G 1,844ft 10.0s 8s
OK Cesaroni I445 88.9oz 91ft/s 556ft/s 20.4G 2,069ft 10.1s 9s
OK Cesaroni I150 88.7oz 55ft/s 417ft/s 6.2G 2,090ft 11.2s 8s
OK Cesaroni I218 89.1oz 67ft/s 490ft/s 9.6G 2,179ft 10.8s 9s
OK Cesaroni I120 90.6oz 49ft/s 392ft/s 4.8G 2,261ft 12.0s 8s
OK Cesaroni I165 89.6oz 57ft/s 453ft/s 6.5G 2,315ft 11.5s 8s
OK Cesaroni I100 97.1oz 64ft/s 375ft/s 10.3G 2,810ft 13.4s 4s
OK Cesaroni J250 97.9oz 61ft/s 606ft/s 8.8G 2,828ft 12.1s 9s
OK Cesaroni J1055 95.8oz 144ft/s 848ft/s 41.5G 2,851ft 10.9s 10s
OK AeroTech J250 100.6oz 64ft/s 607ft/s 9.4G 2,886ft 12.1s 9s
OK Cesaroni J280 102.3oz 66ft/s 639ft/s 9.8G 2,889ft 12.0s 10s
OK AeroTech J250 93.6oz 74ft/s 599ft/s 11.8G 2,956ft 12.0s 9s
OK AeroTech I65 95.1oz 55ft/s 380ft/s 6.4G 2,993ft 14.1s 6s
OK Cesaroni J145 98.1oz 66ft/s 472ft/s 16.8G 3,018ft 12.9s 8s
OK AeroTech J315 98.6oz 75ft/s 655ft/s 12.6G 3,043ft 12.0s 9s
OK AeroTech J1299 98.0oz 154ft/s 954ft/s 53.1G 3,127ft 11.2s 11s
OK Cesaroni J430 96.8oz 90ft/s 777ft/s 18.4G 3,210ft 11.9s 10s
OK AeroTech J460 96.4oz 96ft/s 787ft/s 19.4G 3,249ft 11.8s 10s
OK Cesaroni J240 99.5oz 65ft/s 641ft/s 9.5G 3,283ft 12.7s 9s
OK AeroTech J180 97.1oz 74ft/s 567ft/s 11.0G 3,306ft 12.8s 8s
OK Cesaroni J293 98.2oz 72ft/s 697ft/s 12.0G 3,331ft 12.5s 10s
OK AeroTech J275 99.1oz 68ft/s 643ft/s 10.8G 3,342ft 12.6s 9s
OK Cesaroni J244 100.7oz 63ft/s 657ft/s 8.4G 3,429ft 13.0s 10s
OK Cesaroni J210 98.3oz 68ft/s 579ft/s 10.9G 3,532ft 13.5s 10s

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 (44ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (46ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (47ft/s)

G These simulations were run with a launch guide length of 8ft (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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