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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 60 motors that fit and appear to have enough thrust (745 motors didn't fit, 6 motors failed safety checks). 66 motor had thrust curves available and 118 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: Wayne Comfort
Body Diameter: 4.00in
Dry Weight: 3.80lb
MMT Diameter: 54.0mm
MMT Length: 14.00in
CD: 0.50

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 I215 4.96lb 63ft/s 487ft/s 10.9G 2,251ft 11.2s 9s
OK AeroTech I599 4.93lb 113ft/s 573ft/s 34.1G 2,287ft 10.6s 10s
OK AeroTech I170 4.96lb 52ft/s 471ft/s 8.4G 2,307ft 11.6s 9s
OK AeroTech I229 4.93lb 62ft/s 517ft/s 11.5G 2,362ft 11.3s 10s
OK Cesaroni I445 5.07lb 82ft/s 625ft/s 22.6G 2,661ft 11.4s 10s
OK Cesaroni I150 5.06lb 48ft/s 484ft/s 6.8G 2,667ft 12.6s 9s
OK Cesaroni I218 5.08lb 61ft/s 563ft/s 10.7G 2,789ft 12.2s 10s
OK Cesaroni I165 5.11lb 52ft/s 527ft/s 7.3G 2,954ft 12.9s 9s
OK Cesaroni I100 5.58lb 56ft/s 437ft/s 11.3G 3,551ft 14.8s 6s
OK Cesaroni J250 5.63lb 53ft/s 697ft/s 9.8G 3,615ft 13.6s 11s
OK AeroTech J250 5.80lb 57ft/s 699ft/s 10.6G 3,685ft 13.6s 11s
OK Cesaroni J280 5.90lb 59ft/s 732ft/s 11.0G 3,694ft 13.6s 11s
OK Cesaroni J1055 5.50lb 127ft/s 947ft/s 45.9G 3,697ft 12.5s 12s
OK AeroTech J250 5.36lb 70ft/s 694ft/s 13.1G 3,785ft 13.5s 11s
OK AeroTech I65 5.46lb 51ft/s 450ft/s 7.1G 3,786ft 15.5s 7s
OK Cesaroni J145 5.65lb 58ft/s 551ft/s 18.3G 3,826ft 14.4s 9s
OK AeroTech J315 5.68lb 67ft/s 755ft/s 13.9G 3,896ft 13.6s 11s
OK AeroTech J1299 5.64lb 143ft/s 1,064ft/s 58.4G 4,066ft 12.9s 12s
OK Cesaroni J430 5.56lb 82ft/s 890ft/s 20.1G 4,132ft 13.5s 12s
OK Gorilla J365 6.45lb 56ft/s 821ft/s 16.2G 4,167ft 14.2s 12s
OK AeroTech J460 5.54lb 85ft/s 902ft/s 21.4G 4,181ft 13.4s 11s
OK Cesaroni J240 5.73lb 59ft/s 746ft/s 10.4G 4,193ft 14.3s 11s
OK AeroTech J180 5.58lb 67ft/s 658ft/s 12.1G 4,207ft 14.3s 10s
OK Cesaroni J293 5.65lb 64ft/s 808ft/s 13.2G 4,267ft 14.1s 11s
OK AeroTech J275 5.71lb 62ft/s 746ft/s 12.0G 4,267ft 14.2s 11s
OK AMW J1365 6.27lb 137ft/s 1,060ft/s 55.8G 4,300ft 13.3s 13s
OK Cesaroni J244 5.81lb 58ft/s 768ft/s 9.2G 4,378ft 14.7s 11s
OK Cesaroni J210 5.66lb 63ft/s 678ft/s 12.1G 4,506ft 15.2s 11s
OK AMW J400 6.85lb 65ft/s 874ft/s 14.3G 4,509ft 14.5s 12s
OK Loki J350 6.58lb 63ft/s 875ft/s 14.4G 4,581ft 14.6s 12s
OK AeroTech J1799 6.25lb 154ft/s 1,248ft/s 77.4G 4,603ft 13.3s 13s
OK AMW J475 6.91lb 72ft/s 937ft/s 19.0G 4,657ft 14.4s 12s
OK Cesaroni J1520 6.06lb 142ft/s 1,268ft/s 61.9G 4,664ft 13.4s 13s
OK Gorilla J465 6.41lb 69ft/s 981ft/s 21.5G 4,792ft 14.4s 12s
OK Cesaroni J360 6.23lb 66ft/s 922ft/s 18.5G 4,793ft 14.7s 12s
OK Cesaroni J380 6.65lb 65ft/s 943ft/s 13.2G 4,805ft 14.7s 12s
OK Gorilla J167 6.48lb 59ft/s 623ft/s 11.9G 4,837ft 15.9s 10s
OK Gorilla J395 6.36lb 66ft/s 946ft/s 15.0G 4,875ft 14.8s 12s
OK Loki J820 6.47lb 110ft/s 1,129ft/s 35.3G 4,908ft 14.0s 13s
OK AeroTech J450 6.50lb 73ft/s 974ft/s 17.6G 4,918ft 14.8s 12s
OK Gorilla J485 6.42lb 73ft/s 1,014ft/s 19.2G 4,930ft 14.6s 12s
OK Gorilla J535 6.50lb 92ft/s 1,050ft/s 22.5G 4,950ft 14.4s 12s
OK Loki J525 6.53lb 86ft/s 1,062ft/s 21.1G 4,995ft 14.5s 13s
OK AMW J440 6.51lb 100ft/s 1,000ft/s 26.8G 4,999ft 14.4s 12s
OK AMW J395 6.60lb 70ft/s 927ft/s 15.1G 5,008ft 15.0s 12s
OK AeroTech J540 6.19lb 92ft/s 1,072ft/s 23.6G 5,038ft 14.2s 12s
OK AMW J325 6.51lb 79ft/s 845ft/s 17.7G 5,128ft 15.2s 12s
OK AeroTech J401 5.81lb 77ft/s 1,026ft/s 17.6G 5,137ft 14.6s 12s
OK AMW J745 6.49lb 98ft/s 1,160ft/s 29.5G 5,210ft 14.5s 13s
OK AeroTech J800 6.19lb 111ft/s 1,209ft/s 33.5G 5,316ft 14.3s 12s
OK Cesaroni J760 6.17lb 105ft/s 1,261ft/s 31.8G 5,378ft 14.3s 13s
OK Cesaroni J355 6.39lb 69ft/s 958ft/s 14.4G 5,397ft 15.3s 12s
OK AeroTech J415 6.38lb 76ft/s 1,038ft/s 17.8G 5,542ft 15.1s 12s
OK Cesaroni J449 6.27lb 77ft/s 1,102ft/s 19.2G 5,555ft 15.0s 12s
OK Cesaroni J295 6.27lb 72ft/s 884ft/s 14.7G 5,578ft 15.6s 12s
OK Loki J300 6.70lb 69ft/s 880ft/s 12.6G 5,602ft 16.0s 12s
OK Loki J175 6.56lb 67ft/s 732ft/s 13.5G 5,632ft 16.6s 10s
OK Cesaroni K360 6.52lb 67ft/s 1,024ft/s 12.6G 5,719ft 15.6s 12s
OK AeroTech K400 6.43lb 81ft/s 1,029ft/s 17.9G 5,860ft 15.7s 12s
OK AeroTech K535 6.59lb 91ft/s 1,146ft/s 20.9G 5,925ft 15.2s 12s

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 (45ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni I120 speed at end of launch guide too slow (45ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni J140 speed at end of launch guide too slow (46ft/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.)

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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