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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 127 motors that fit and appear to have enough thrust (614 motors didn't fit, 61 motors failed safety checks). 185 motor had thrust curves available and 335 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:   Extreme Darkstar
Owner: Wayne Comfort
Body Diameter: 4.00in
Dry Weight: 16.22lb
MMT Diameter: 54.0mm
MMT Length: 44.00in
CD: 0.40

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 17.35lb 66ft/s 151ft/s 8.9G 388ft 5.2s 5s
OK Cesaroni I445 17.49lb 53ft/s 165ft/s 5.9G 496ft 6.0s 5s
OK Contrail J292 19.62lb 50ft/s 193ft/s 5.3G 852ft 8.2s 6s
OK Hypertek J270 19.08lb 49ft/s 210ft/s 4.8G 1,050ft 9.1s 6s
OK Cesaroni J1055 17.92lb 81ft/s 280ft/s 13.3G 1,212ft 8.9s 8s
OK Contrail J358 20.06lb 51ft/s 248ft/s 7.1G 1,291ft 9.9s 7s
OK Cesaroni J430 17.98lb 50ft/s 272ft/s 5.5G 1,329ft 9.9s 8s
OK AeroTech J460 17.96lb 53ft/s 282ft/s 6.0G 1,428ft 10.1s 8s
OK AeroTech J1299 18.06lb 94ft/s 325ft/s 17.4G 1,567ft 10.0s 9s
OK Contrail J272 20.07lb 51ft/s 266ft/s 5.4G 1,636ft 11.3s 8s
OK AMW J1365 18.69lb 92ft/s 346ft/s 17.8G 1,758ft 10.5s 10s
OK AMW J475 19.33lb 49ft/s 329ft/s 6.4G 1,858ft 11.5s 9s
OK Contrail J416 19.97lb 56ft/s 322ft/s 7.8G 1,958ft 11.9s 9s
OK Contrail J642 20.17lb 74ft/s 344ft/s 15.3G 1,976ft 11.4s 10s
OK AMW J325 18.93lb 49ft/s 311ft/s 5.4G 1,983ft 12.3s 9s
OK Gorilla J485 18.84lb 50ft/s 351ft/s 6.0G 2,064ft 12.2s 10s
OK Gorilla J535 18.92lb 57ft/s 368ft/s 7.0G 2,229ft 12.4s 10s
OK AMW J440 18.93lb 66ft/s 362ft/s 8.5G 2,231ft 12.3s 10s
OK Loki J525 18.95lb 54ft/s 372ft/s 7.0G 2,236ft 12.4s 10s
OK AeroTech J401 18.23lb 48ft/s 356ft/s 4.9G 2,237ft 12.7s 10s
OK AeroTech J1799 18.67lb 107ft/s 407ft/s 24.7G 2,300ft 11.9s 11s
OK Cesaroni J1520 18.48lb 95ft/s 406ft/s 19.9G 2,305ft 12.0s 11s
OK AeroTech J540 18.61lb 59ft/s 383ft/s 7.2G 2,405ft 12.8s 11s
OK Loki J820 18.89lb 73ft/s 398ft/s 11.7G 2,429ft 12.5s 11s
OK AMW J475 19.51lb 52ft/s 375ft/s 5.8G 2,459ft 13.3s 10s
OK AMW J745 18.91lb 69ft/s 414ft/s 9.4G 2,586ft 13.1s 11s
OK AMW K1720 19.20lb 101ft/s 436ft/s 22.2G 2,593ft 12.6s 12s
OK AeroTech J415 18.80lb 49ft/s 391ft/s 5.7G 2,711ft 13.9s 11s
OK Cesaroni J449 18.69lb 50ft/s 404ft/s 5.8G 2,731ft 13.9s 11s
OK AeroTech K400 18.85lb 52ft/s 398ft/s 5.4G 2,815ft 14.2s 11s
OK AeroTech J800 18.61lb 70ft/s 436ft/s 10.5G 2,877ft 13.7s 12s
OK Cesaroni J760 18.59lb 67ft/s 446ft/s 9.9G 2,918ft 13.8s 12s
OK AMW K665 20.05lb 57ft/s 438ft/s 8.6G 2,934ft 14.0s 12s
OK Cesaroni K454 19.29lb 49ft/s 422ft/s 5.4G 2,992ft 14.6s 11s
OK Gorilla K520 19.40lb 51ft/s 436ft/s 6.2G 3,011ft 14.5s 12s
OK Gorilla K555 19.70lb 52ft/s 442ft/s 6.6G 3,061ft 14.6s 12s
OK Cesaroni K530 19.84lb 49ft/s 448ft/s 6.1G 3,149ft 14.9s 12s
OK Gorilla K533 20.00lb 50ft/s 445ft/s 7.0G 3,157ft 14.8s 12s
OK Gorilla K630 19.66lb 58ft/s 460ft/s 8.4G 3,208ft 14.6s 12s
OK AMW K535 19.66lb 55ft/s 450ft/s 6.3G 3,227ft 14.9s 12s
OK AeroTech K535 19.01lb 57ft/s 457ft/s 6.6G 3,356ft 15.1s 12s
OK KBA K700 19.53lb 63ft/s 484ft/s 9.8G 3,363ft 14.8s 13s
OK AeroTech K513 19.85lb 54ft/s 465ft/s 6.7G 3,372ft 15.2s 12s
OK AMW K455 19.54lb 59ft/s 445ft/s 7.9G 3,397ft 15.3s 12s
OK AeroTech K2050 19.07lb 107ft/s 521ft/s 24.7G 3,458ft 14.4s 14s
OK AMW K610 20.11lb 57ft/s 477ft/s 7.3G 3,510ft 15.3s 13s
OK Cesaroni K2045 19.06lb 108ft/s 531ft/s 25.7G 3,550ft 14.5s 14s
OK AeroTech K695 19.50lb 63ft/s 495ft/s 9.6G 3,585ft 15.3s 13s
OK Gorilla K327 20.23lb 53ft/s 415ft/s 6.7G 3,667ft 16.4s 11s
OK Cesaroni K500 19.47lb 53ft/s 495ft/s 6.0G 3,858ft 16.3s 13s
OK Loki K690 21.51lb 57ft/s 522ft/s 7.9G 3,911ft 16.1s 14s
OK AMW K935 19.54lb 74ft/s 537ft/s 11.6G 3,918ft 15.6s 14s
OK AMW K700 20.82lb 59ft/s 520ft/s 8.5G 3,924ft 16.0s 14s
OK AeroTech K550 19.50lb 59ft/s 499ft/s 8.5G 3,970ft 16.3s 13s
OK Cesaroni K515 19.87lb 55ft/s 506ft/s 6.7G 4,015ft 16.5s 13s
OK AeroTech K540 19.03lb 62ft/s 511ft/s 9.1G 4,029ft 16.3s 13s
OK Cesaroni K445 19.30lb 57ft/s 493ft/s 6.8G 4,041ft 16.7s 13s
OK AeroTech K1100 19.17lb 83ft/s 555ft/s 14.7G 4,104ft 15.9s 14s
OK Gorilla K700 20.00lb 61ft/s 544ft/s 8.1G 4,173ft 16.6s 14s
OK AMW K855 20.90lb 66ft/s 556ft/s 10.5G 4,234ft 16.4s 14s
OK Cesaroni K940 19.23lb 76ft/s 569ft/s 11.9G 4,270ft 16.3s 15s
OK Cesaroni K520 19.69lb 54ft/s 529ft/s 6.0G 4,286ft 17.1s 14s
OK Cesaroni K650 20.61lb 56ft/s 555ft/s 7.4G 4,338ft 17.0s 14s
OK Gorilla K763 20.17lb 63ft/s 563ft/s 8.9G 4,342ft 16.7s 14s
OK Cesaroni K630 19.33lb 61ft/s 551ft/s 8.2G 4,344ft 16.8s 14s
OK AMW K710 20.21lb 66ft/s 560ft/s 8.8G 4,513ft 17.0s 14s
OK AMW K670 20.38lb 64ft/s 565ft/s 8.2G 4,536ft 17.1s 15s
OK AeroTech K805 19.62lb 65ft/s 578ft/s 9.4G 4,539ft 17.0s 15s
OK Gorilla K805 20.13lb 65ft/s 580ft/s 11.5G 4,557ft 16.9s 15s
OK AMW K580 20.24lb 66ft/s 558ft/s 11.0G 4,717ft 17.5s 14s
OK AeroTech K990 20.87lb 69ft/s 606ft/s 10.9G 4,799ft 17.3s 15s
OK AeroTech K850 20.72lb 70ft/s 611ft/s 11.1G 4,833ft 17.4s 15s
OK AeroTech K1103 19.44lb 88ft/s 629ft/s 17.6G 4,935ft 17.2s 16s
OK Cesaroni K740 19.46lb 69ft/s 614ft/s 9.2G 5,036ft 17.8s 15s
OK Loki K527 20.57lb 58ft/s 582ft/s 7.3G 5,131ft 18.5s 14s
OK Cesaroni K490 20.31lb 52ft/s 584ft/s 5.6G 5,192ft 18.8s 15s
OK AMW K1250 20.22lb 90ft/s 657ft/s 16.9G 5,270ft 17.7s 16s
OK Loki K960 20.07lb 85ft/s 647ft/s 16.2G 5,287ft 17.8s 16s
OK Cesaroni K635 20.12lb 62ft/s 619ft/s 7.7G 5,305ft 18.5s 15s
OK Cesaroni K675 20.50lb 61ft/s 621ft/s 8.9G 5,318ft 18.4s 15s
OK Cesaroni K650 19.99lb 65ft/s 624ft/s 12.8G 5,406ft 18.5s 15s
OK Gorilla K980 21.64lb 73ft/s 659ft/s 13.0G 5,535ft 18.4s 16s
OK AeroTech K828 21.12lb 73ft/s 664ft/s 12.9G 5,645ft 18.6s 16s
OK Cesaroni K1200 19.82lb 85ft/s 695ft/s 14.6G 5,653ft 18.3s 17s
OK Cesaroni K570 19.93lb 66ft/s 626ft/s 9.1G 5,660ft 19.0s 15s
OK Cesaroni K600 20.39lb 60ft/s 642ft/s 7.6G 5,764ft 19.3s 16s
OK AeroTech K1275 20.60lb 89ft/s 705ft/s 16.1G 5,883ft 18.6s 17s
OK AMW K1075 22.04lb 74ft/s 692ft/s 12.4G 5,895ft 18.9s 17s
OK AeroTech K375 20.86lb 80ft/s 580ft/s 13.6G 5,939ft 19.9s 14s
OK Cesaroni K780 19.97lb 70ft/s 687ft/s 10.2G 5,964ft 19.1s 16s
OK AeroTech K480 20.80lb 64ft/s 648ft/s 8.8G 6,241ft 20.0s 15s
OK AeroTech K700 20.71lb 72ft/s 684ft/s 10.6G 6,311ft 19.6s 16s
OK Cesaroni K815 21.06lb 66ft/s 717ft/s 11.8G 6,372ft 19.7s 17s
OK Cesaroni K750 20.75lb 66ft/s 713ft/s 9.4G 6,461ft 19.9s 17s
OK Loki K830 21.51lb 58ft/s 746ft/s 11.9G 6,540ft 20.1s 17s
OK Gorilla K1075 21.82lb 73ft/s 748ft/s 12.4G 6,564ft 19.7s 18s
OK Cesaroni K711 21.07lb 66ft/s 710ft/s 15.2G 6,594ft 20.2s 17s
OK Loki K350 21.82lb 65ft/s 589ft/s 11.6G 6,643ft 21.6s 15s
OK Gorilla K470 21.35lb 67ft/s 640ft/s 10.2G 6,665ft 20.6s 15s
OK Cesaroni K820 20.59lb 73ft/s 740ft/s 17.0G 6,777ft 20.1s 17s
OK Cesaroni K300 21.22lb 48ft/s 581ft/s 4.8G 6,792ft 22.2s 14s
OK Cesaroni K590 20.62lb 89ft/s 684ft/s 18.8G 6,852ft 20.5s 16s
OK KBA K1750 21.87lb 92ft/s 807ft/s 22.5G 6,865ft 19.7s 18s
OK Cesaroni K1440 20.39lb 96ft/s 802ft/s 19.9G 6,882ft 19.7s 18s
OK KBA K750 22.03lb 70ft/s 731ft/s 11.1G 6,885ft 20.5s 17s
OK Gorilla K1185 21.82lb 76ft/s 785ft/s 13.8G 6,901ft 20.1s 18s
OK Cesaroni K660 20.52lb 73ft/s 729ft/s 10.9G 6,973ft 20.6s 17s
OK AMW K1130 21.89lb 80ft/s 783ft/s 14.9G 7,054ft 20.3s 18s
OK AeroTech K1050 21.08lb 81ft/s 797ft/s 14.7G 7,201ft 20.5s 18s
OK AMW L1276 22.75lb 78ft/s 817ft/s 14.5G 7,388ft 20.7s 19s
OK AMW L985 21.89lb 80ft/s 800ft/s 14.1G 7,497ft 20.9s 18s
OK AeroTech L1090 21.58lb 78ft/s 817ft/s 12.8G 7,652ft 21.1s 18s
OK KBA L2300 22.02lb 108ft/s 888ft/s 30.1G 7,726ft 20.6s 19s
OK AeroTech L1000 21.06lb 81ft/s 838ft/s 13.1G 7,849ft 21.2s 18s
OK Cesaroni L640 21.17lb 87ft/s 759ft/s 15.5G 7,998ft 21.9s 17s
OK Cesaroni L730 21.17lb 76ft/s 801ft/s 11.9G 8,011ft 21.8s 18s
OK Cesaroni L990 21.15lb 81ft/s 849ft/s 16.3G 8,060ft 21.5s 19s
OK Cesaroni L1030 21.37lb 76ft/s 870ft/s 15.2G 8,127ft 21.6s 19s
OK Cesaroni L805 21.74lb 72ft/s 828ft/s 14.3G 8,180ft 22.0s 18s
OK Loki L1400 21.82lb 88ft/s 895ft/s 19.6G 8,182ft 21.4s 19s
OK Cesaroni L935 21.82lb 79ft/s 904ft/s 14.9G 8,976ft 22.6s 19s
OK Loki L1040 22.75lb 77ft/s 1,047ft/s 13.1G 10,843ft 24.4s 21s
OK Loki L2050 25.16lb 111ft/s 1,301ft/s 30.3G 13,235ft 25.7s 23s
OK Loki M1378 25.77lb 99ft/s 1,312ft/s 19.3G 14,615ft 27.1s 23s
warningsD AMW K590 20.01lb 7:1 thrust/weight ratio (no data)
warningsD Gorilla K695 19.52lb 8:1 thrust/weight ratio (no data)
warningsD Gorilla K828 20.27lb 9:1 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 (21ft/s)
failedG Cesaroni I140 speed at end of launch guide too slow (23ft/s)
failedG AeroTech I215 speed at end of launch guide too slow (34ft/s)
failedG AeroTech I229 speed at end of launch guide too slow (34ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (22ft/s)
failedG AeroTech I170 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni I150 speed at end of launch guide too slow (25ft/s)
failedG Cesaroni I218 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni I120 speed at end of launch guide too slow (20ft/s)
failedG Cesaroni I165 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni I100 speed at end of launch guide too slow (30ft/s)
failedG AeroTech I65 speed at end of launch guide too slow (24ft/s)
failedG Contrail J245 speed at end of launch guide too slow (40ft/s)
failedG Hypertek J115 speed at end of launch guide too slow (29ft/s)
failedG Contrail J355 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni J250 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni J145 speed at end of launch guide too slow (33ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (39ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni J280 speed at end of launch guide too slow (36ft/s)
failedG Hypertek J170 speed at end of launch guide too slow (39ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (33ft/s)
failedG Hypertek J250 speed at end of launch guide too slow (43ft/s)
failedG Hypertek J120 speed at end of launch guide too slow (32ft/s)
failedG AeroTech J315 speed at end of launch guide too slow (42ft/s)
failedG AeroTech J180 speed at end of launch guide too slow (39ft/s)
failedG AeroTech J275 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni J240 speed at end of launch guide too slow (35ft/s)
failedG Hypertek J190 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni J210 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni J293 speed at end of launch guide too slow (38ft/s)
failedG Gorilla J365 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni J244 speed at end of launch guide too slow (33ft/s)
failedG Loki J350 speed at end of launch guide too slow (41ft/s)
failedG Gorilla J167 speed at end of launch guide too slow (39ft/s)
failedG AMW J400 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni J360 speed at end of launch guide too slow (41ft/s)
failedG Gorilla J465 speed at end of launch guide too slow (47ft/s)
failedG Gorilla J395 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni J380 speed at end of launch guide too slow (41ft/s)
failedG AeroTech J450 speed at end of launch guide too slow (46ft/s)
failedG AeroTech J135 speed at end of launch guide too slow (30ft/s)
failedG AMW J395 speed at end of launch guide too slow (47ft/s)
failedG Gorilla J450 speed at end of launch guide too slow (46ft/s)
failedG Loki J175 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni J355 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni J295 speed at end of launch guide too slow (45ft/s)
failedG Loki J300 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni J140 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni K360 speed at end of launch guide too slow (42ft/s)
failedG AeroTech K456 speed at end of launch guide too slow (47ft/s)
failedG Gorilla K222 speed at end of launch guide too slow (43ft/s)
failedG AeroTech K185 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni K160 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni K400 speed at end of launch guide too slow (47ft/s)
failedG Loki K250 speed at end of launch guide too slow (46ft/s)
failedG AeroTech K270 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni K261 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni K260 speed at end of launch guide too slow (43ft/s)
failedG AeroTech K250 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni L265 speed at end of launch guide too slow (41ft/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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