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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 150 motors that fit and appear to have enough thrust (609 motors didn't fit, 32 motors failed safety checks). 179 motor had thrust curves available and 323 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:   DarkStar 4inch DD
Owner: Doug Lucy
Body Diameter: 4.00in
Dry Weight: 11.30lb
MMT Diameter: 54.0mm
MMT Length: 30.00in
CD: 0.70

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 12.43lb 81ft/s 218ft/s 12.8G 713ft 6.8s 6s
OK Cesaroni I445 12.57lb 62ft/s 241ft/s 8.5G 902ft 7.8s 7s
OK Contrail J245 14.72lb 48ft/s 235ft/s 5.7G 1,110ft 9.1s 6s
OK Contrail J355 14.75lb 52ft/s 275ft/s 7.5G 1,259ft 9.4s 7s
OK Hypertek J250 14.15lb 51ft/s 258ft/s 5.5G 1,338ft 9.9s 7s
OK Contrail J292 14.70lb 60ft/s 273ft/s 7.4G 1,404ft 10.0s 7s
OK AeroTech J250 12.86lb 49ft/s 297ft/s 4.9G 1,607ft 10.8s 8s
OK Hypertek J270 14.16lb 59ft/s 299ft/s 6.8G 1,701ft 10.9s 8s
OK Hypertek J190 14.15lb 50ft/s 273ft/s 5.0G 1,717ft 11.5s 7s
OK AeroTech J315 13.18lb 50ft/s 328ft/s 5.5G 1,749ft 11.1s 8s
OK Cesaroni J1055 13.00lb 93ft/s 393ft/s 18.7G 1,841ft 10.4s 10s
OK AeroTech J180 13.08lb 48ft/s 289ft/s 4.6G 1,843ft 11.7s 7s
OK Cesaroni J430 13.06lb 59ft/s 387ft/s 8.0G 2,056ft 11.5s 10s
OK AeroTech J460 13.04lb 64ft/s 398ft/s 8.6G 2,159ft 11.7s 10s
OK Gorilla J167 13.98lb 48ft/s 291ft/s 5.0G 2,187ft 13.2s 7s
OK AeroTech J1299 13.14lb 110ft/s 452ft/s 24.3G 2,234ft 11.3s 11s
OK AMW J400 14.35lb 50ft/s 414ft/s 6.7G 2,379ft 12.6s 10s
OK Loki J350 14.08lb 49ft/s 412ft/s 6.3G 2,394ft 12.6s 10s
OK AMW J1365 13.77lb 106ft/s 475ft/s 24.6G 2,424ft 11.7s 11s
OK Cesaroni J360 13.73lb 49ft/s 434ft/s 7.9G 2,606ft 13.2s 10s
OK AMW J475 14.41lb 57ft/s 451ft/s 8.8G 2,606ft 12.8s 11s
OK Gorilla J395 13.86lb 52ft/s 449ft/s 6.6G 2,664ft 13.2s 11s
OK Cesaroni J380 14.15lb 50ft/s 447ft/s 6.0G 2,666ft 13.3s 11s
OK Gorilla J465 13.91lb 56ft/s 465ft/s 9.8G 2,711ft 13.0s 11s
OK AeroTech J450 14.00lb 56ft/s 466ft/s 7.7G 2,752ft 13.2s 11s
OK AMW J395 14.10lb 56ft/s 452ft/s 6.5G 2,786ft 13.4s 11s
OK AMW J325 14.01lb 60ft/s 427ft/s 7.7G 2,821ft 13.6s 10s
OK Gorilla J485 13.92lb 58ft/s 484ft/s 8.4G 2,844ft 13.3s 11s
OK Gorilla J450 14.51lb 52ft/s 474ft/s 8.5G 2,860ft 13.5s 11s
OK AeroTech J1799 13.75lb 126ft/s 558ft/s 34.0G 2,937ft 12.6s 12s
OK Loki J175 14.06lb 50ft/s 366ft/s 5.7G 2,954ft 14.8s 8s
OK Cesaroni J1520 13.56lb 114ft/s 560ft/s 27.4G 2,961ft 12.7s 12s
OK AMW J440 14.01lb 77ft/s 489ft/s 11.9G 2,967ft 13.2s 11s
OK Gorilla J535 14.00lb 69ft/s 503ft/s 9.9G 2,972ft 13.3s 11s
OK Loki J525 14.03lb 66ft/s 510ft/s 9.7G 2,988ft 13.4s 11s
OK AeroTech J401 13.31lb 59ft/s 493ft/s 7.1G 3,056ft 13.8s 11s
OK Loki J820 13.97lb 87ft/s 539ft/s 15.7G 3,105ft 13.2s 12s
OK AeroTech J540 13.69lb 70ft/s 522ft/s 10.1G 3,151ft 13.7s 11s
OK Loki J300 14.20lb 51ft/s 454ft/s 5.4G 3,183ft 14.7s 10s
OK Cesaroni J355 13.89lb 54ft/s 484ft/s 6.1G 3,192ft 14.4s 11s
OK AMW K1720 14.28lb 119ft/s 590ft/s 30.3G 3,210ft 13.1s 12s
OK Cesaroni J295 13.77lb 55ft/s 458ft/s 6.2G 3,231ft 14.6s 11s
OK AMW J475 14.59lb 61ft/s 506ft/s 8.0G 3,231ft 14.1s 11s
OK AMW J745 13.99lb 80ft/s 560ft/s 13.1G 3,283ft 13.7s 12s
OK Gorilla K222 14.82lb 51ft/s 390ft/s 5.4G 3,292ft 15.6s 9s
OK AeroTech J415 13.88lb 58ft/s 527ft/s 7.9G 3,491ft 14.6s 11s
OK AeroTech K456 14.57lb 57ft/s 541ft/s 7.0G 3,505ft 14.7s 12s
OK Cesaroni K360 14.02lb 50ft/s 523ft/s 5.5G 3,508ft 15.0s 12s
OK Cesaroni J449 13.77lb 60ft/s 549ft/s 8.2G 3,510ft 14.6s 12s
OK AeroTech J800 13.69lb 83ft/s 589ft/s 14.6G 3,539ft 14.1s 12s
OK Cesaroni J760 13.67lb 81ft/s 606ft/s 13.8G 3,580ft 14.1s 12s
OK AMW K665 15.13lb 67ft/s 582ft/s 11.6G 3,589ft 14.4s 12s
OK AeroTech K400 13.93lb 61ft/s 534ft/s 7.7G 3,619ft 14.9s 12s
OK Gorilla K520 14.48lb 59ft/s 583ft/s 8.4G 3,736ft 15.0s 12s
OK Cesaroni K454 14.37lb 57ft/s 565ft/s 7.6G 3,740ft 15.0s 12s
OK Gorilla K555 14.78lb 61ft/s 591ft/s 9.0G 3,759ft 15.0s 12s
OK Gorilla K533 15.08lb 59ft/s 588ft/s 9.6G 3,833ft 15.1s 12s
OK Cesaroni K530 14.92lb 58ft/s 599ft/s 8.0G 3,837ft 15.1s 12s
OK Gorilla K630 14.74lb 68ft/s 611ft/s 11.4G 3,847ft 14.8s 13s
OK AMW K535 14.74lb 66ft/s 595ft/s 8.7G 3,914ft 15.2s 13s
OK AeroTech K2050 14.15lb 130ft/s 704ft/s 33.6G 3,919ft 14.2s 13s
OK KBA K700 14.61lb 73ft/s 645ft/s 13.2G 3,951ft 14.8s 13s
OK Cesaroni K2045 14.14lb 125ft/s 720ft/s 34.9G 3,983ft 14.2s 14s
OK AeroTech K513 14.93lb 62ft/s 614ft/s 9.0G 4,003ft 15.2s 13s
OK AeroTech K535 14.09lb 69ft/s 605ft/s 9.2G 4,013ft 15.2s 12s
OK AMW K455 14.62lb 70ft/s 580ft/s 10.9G 4,078ft 15.4s 12s
OK AMW K610 15.19lb 67ft/s 625ft/s 10.0G 4,121ft 15.4s 13s
OK AeroTech K695 14.58lb 73ft/s 654ft/s 13.2G 4,125ft 15.1s 13s
OK AMW K935 14.62lb 86ft/s 708ft/s 15.7G 4,365ft 15.2s 14s
OK Loki K690 16.59lb 65ft/s 677ft/s 10.5G 4,398ft 15.8s 13s
OK AMW K700 15.90lb 68ft/s 675ft/s 11.2G 4,403ft 15.7s 13s
OK Gorilla K327 15.31lb 61ft/s 529ft/s 9.1G 4,412ft 16.5s 11s
OK Cesaroni K400 14.72lb 57ft/s 606ft/s 6.3G 4,438ft 16.5s 13s
OK Cesaroni K500 14.55lb 61ft/s 647ft/s 8.3G 4,449ft 16.1s 13s
OK AeroTech K1100 14.25lb 97ft/s 733ft/s 20.1G 4,471ft 15.2s 14s
OK AeroTech K550 14.58lb 70ft/s 645ft/s 11.6G 4,487ft 15.9s 12s
OK AeroTech K540 14.11lb 73ft/s 665ft/s 12.6G 4,517ft 15.8s 13s
OK Cesaroni K515 14.95lb 64ft/s 655ft/s 9.2G 4,565ft 16.2s 13s
OK Loki K250 15.25lb 57ft/s 498ft/s 10.8G 4,600ft 17.8s 11s
OK AMW K855 15.98lb 77ft/s 720ft/s 13.8G 4,601ft 15.8s 14s
OK Cesaroni K940 14.31lb 85ft/s 752ft/s 16.4G 4,619ft 15.5s 14s
OK Cesaroni K445 14.38lb 67ft/s 635ft/s 9.4G 4,625ft 16.3s 12s
OK Gorilla K700 15.08lb 71ft/s 710ft/s 11.0G 4,630ft 16.1s 14s
OK Gorilla K763 15.25lb 72ft/s 733ft/s 12.1G 4,728ft 16.0s 14s
OK Cesaroni K650 15.69lb 66ft/s 720ft/s 9.6G 4,743ft 16.3s 14s
OK Cesaroni K630 14.41lb 72ft/s 718ft/s 11.3G 4,745ft 16.1s 13s
OK Cesaroni K520 14.77lb 65ft/s 683ft/s 8.4G 4,784ft 16.5s 13s
OK Gorilla K805 15.21lb 74ft/s 748ft/s 15.5G 4,852ft 16.0s 14s
OK AeroTech K805 14.70lb 77ft/s 752ft/s 12.7G 4,866ft 16.1s 14s
OK AMW K710 15.29lb 78ft/s 715ft/s 12.0G 4,877ft 16.2s 13s
OK AMW K670 15.46lb 73ft/s 725ft/s 11.1G 4,908ft 16.4s 14s
OK AeroTech K990 15.95lb 81ft/s 782ft/s 14.3G 5,008ft 16.2s 14s
OK AeroTech K850 15.80lb 78ft/s 788ft/s 14.7G 5,024ft 16.2s 14s
OK AeroTech K1103 14.52lb 101ft/s 820ft/s 23.9G 5,058ft 15.9s 14s
OK AMW K580 15.32lb 78ft/s 704ft/s 14.8G 5,073ft 16.6s 13s
OK Cesaroni K740 14.54lb 79ft/s 790ft/s 12.6G 5,227ft 16.5s 14s
OK AMW K1250 15.30lb 101ft/s 849ft/s 22.7G 5,296ft 16.2s 15s
OK Loki K960 15.15lb 103ft/s 828ft/s 21.8G 5,335ft 16.4s 14s
OK Loki K527 15.65lb 69ft/s 731ft/s 9.9G 5,430ft 17.4s 13s
OK Cesaroni K675 15.58lb 70ft/s 781ft/s 12.1G 5,456ft 17.0s 14s
OK Cesaroni K635 15.20lb 72ft/s 782ft/s 10.5G 5,460ft 17.1s 14s
OK Cesaroni K490 15.39lb 63ft/s 730ft/s 7.6G 5,507ft 17.7s 14s
OK Cesaroni K650 15.07lb 74ft/s 789ft/s 17.4G 5,509ft 17.1s 14s
OK Cesaroni K1200 14.90lb 98ft/s 899ft/s 19.7G 5,538ft 16.5s 15s
OK Gorilla K980 16.72lb 83ft/s 830ft/s 16.9G 5,540ft 16.9s 15s
OK AeroTech K828 16.20lb 85ft/s 838ft/s 17.2G 5,597ft 16.9s 14s
OK AeroTech K270 15.93lb 49ft/s 558ft/s 5.0G 5,610ft 19.4s 11s
OK AeroTech K1275 15.68lb 104ft/s 895ft/s 21.5G 5,681ft 16.7s 15s
OK Cesaroni K570 15.01lb 79ft/s 776ft/s 12.4G 5,747ft 17.4s 14s
OK AMW K1075 17.12lb 84ft/s 871ft/s 16.3G 5,814ft 17.2s 15s
OK Cesaroni K600 15.47lb 69ft/s 798ft/s 10.3G 5,815ft 17.6s 14s
OK Cesaroni K780 15.05lb 79ft/s 869ft/s 13.9G 5,823ft 17.2s 14s
OK AeroTech K700 15.79lb 82ft/s 838ft/s 14.2G 6,095ft 17.6s 14s
OK Cesaroni K815 16.14lb 74ft/s 893ft/s 15.7G 6,116ft 17.6s 15s
OK AeroTech K375 15.94lb 95ft/s 694ft/s 18.0G 6,137ft 18.5s 13s
OK AeroTech K480 15.88lb 74ft/s 790ft/s 11.9G 6,181ft 18.1s 13s
OK Cesaroni K750 15.83lb 77ft/s 878ft/s 12.7G 6,184ft 17.7s 15s
OK Gorilla K1075 16.90lb 83ft/s 932ft/s 15.8G 6,230ft 17.6s 15s
OK Loki K830 16.59lb 66ft/s 941ft/s 13.7G 6,262ft 18.0s 15s
OK Cesaroni K1440 15.47lb 113ft/s 1,016ft/s 26.5G 6,277ft 17.1s 15s
OK KBA K1750 16.95lb 107ft/s 1,026ft/s 28.6G 6,288ft 17.2s 16s
OK Cesaroni K711 16.15lb 77ft/s 864ft/s 20.1G 6,315ft 18.0s 15s
OK Cesaroni K260 15.81lb 50ft/s 618ft/s 5.1G 6,337ft 20.1s 11s
OK Cesaroni K820 15.67lb 84ft/s 910ft/s 22.7G 6,374ft 17.7s 15s
OK Gorilla K1185 16.90lb 85ft/s 982ft/s 17.9G 6,432ft 17.8s 16s
OK KBA K750 17.11lb 81ft/s 881ft/s 14.6G 6,511ft 18.2s 15s
OK AMW K1130 16.97lb 94ft/s 965ft/s 19.5G 6,529ft 17.8s 16s
OK Gorilla K470 16.43lb 78ft/s 753ft/s 13.5G 6,540ft 18.6s 13s
OK Cesaroni K660 15.60lb 86ft/s 881ft/s 14.6G 6,573ft 18.1s 14s
OK AeroTech K1050 16.16lb 97ft/s 990ft/s 19.5G 6,588ft 17.8s 15s
OK Cesaroni K590 15.70lb 100ft/s 810ft/s 25.0G 6,593ft 18.3s 14s
OK AMW L1276 17.83lb 91ft/s 1,009ft/s 18.0G 6,759ft 18.1s 16s
OK Loki K350 16.90lb 74ft/s 683ft/s 15.3G 6,794ft 20.0s 13s
OK KBA L2300 17.10lb 131ft/s 1,125ft/s 38.4G 6,841ft 17.7s 16s
OK AMW L985 16.97lb 94ft/s 972ft/s 18.5G 6,862ft 18.3s 16s
OK AeroTech L1090 16.66lb 93ft/s 992ft/s 16.8G 6,909ft 18.2s 15s
OK Cesaroni K300 16.30lb 56ft/s 683ft/s 6.5G 6,969ft 20.5s 12s
OK AeroTech L1000 16.14lb 92ft/s 1,020ft/s 17.5G 6,976ft 18.1s 15s
OK Cesaroni L990 16.23lb 92ft/s 1,026ft/s 21.5G 7,127ft 18.3s 15s
OK Loki L1400 16.90lb 103ft/s 1,098ft/s 23.5G 7,139ft 18.1s 16s
OK Cesaroni L1030 16.45lb 86ft/s 1,056ft/s 20.1G 7,140ft 18.4s 16s
OK Cesaroni L265 16.77lb 49ft/s 647ft/s 5.2G 7,204ft 21.9s 11s
OK Cesaroni L730 16.25lb 86ft/s 949ft/s 15.8G 7,227ft 18.7s 15s
OK Cesaroni L805 16.82lb 83ft/s 980ft/s 18.7G 7,296ft 18.8s 15s
OK Cesaroni L640 16.25lb 97ft/s 879ft/s 20.1G 7,355ft 19.0s 14s
OK Cesaroni L935 16.90lb 93ft/s 1,066ft/s 19.5G 7,733ft 19.0s 16s
OK Loki L1040 17.83lb 90ft/s 1,210ft/s 15.9G 8,887ft 20.0s 16s
warningsD AMW K590 15.09lb 9:1 thrust/weight ratio (no data)
warningsD Gorilla K695 14.60lb 11:1 thrust/weight ratio (no data)
warningsD Gorilla K828 15.35lb 12:1 thrust/weight ratio (no data)

D No simulation data found for this motor.

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 (30ft/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 (43ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (27ft/s)
failedG AeroTech I170 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni I150 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni I218 speed at end of launch guide too slow (43ft/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 (39ft/s)
failedG AeroTech I65 speed at end of launch guide too slow (32ft/s)
failedG Hypertek J115 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni J250 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni J145 speed at end of launch guide too slow (42ft/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 (43ft/s)
failedG Hypertek J170 speed at end of launch guide too slow (47ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (40ft/s)
failedG Hypertek J120 speed at end of launch guide too slow (39ft/s)
failedG AeroTech J275 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni J240 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni J210 speed at end of launch guide too slow (44ft/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 (45ft/s)
failedG Cesaroni J244 speed at end of launch guide too slow (40ft/s)
failedG AeroTech J135 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni J140 speed at end of launch guide too slow (34ft/s)
failedG AeroTech K185 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni K160 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni K261 speed at end of launch guide too slow (45ft/s)
failedG AeroTech K250 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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