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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 148 motors that fit and appear to have enough thrust (605 motors didn't fit, 38 motors failed safety checks). 183 motor had thrust curves available and 331 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:   4 inch Drago
Owner: Wayne Comfort
Body Diameter: 4.00in
Dry Weight: 8.75lb
MMT Diameter: 54.0mm
MMT Length: 39.00in
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 I599 9.88lb 77ft/s 280ft/s 16.4G 1,096ft 8.3s 8s
OK Cesaroni I445 10.02lb 60ft/s 311ft/s 11.0G 1,377ft 9.4s 8s
OK Contrail J355 12.20lb 55ft/s 345ft/s 9.3G 1,820ft 11.0s 9s
OK Hypertek J250 11.60lb 50ft/s 331ft/s 6.9G 1,957ft 11.6s 8s
OK Contrail J292 12.15lb 59ft/s 344ft/s 9.2G 2,015ft 11.7s 9s
OK AeroTech J250 10.31lb 49ft/s 390ft/s 6.4G 2,382ft 12.6s 10s
OK Hypertek J270 11.61lb 56ft/s 380ft/s 8.6G 2,441ft 12.7s 9s
OK Hypertek J190 11.60lb 48ft/s 354ft/s 6.4G 2,503ft 13.4s 8s
OK AeroTech J315 10.63lb 49ft/s 425ft/s 7.1G 2,554ft 12.9s 10s
OK Cesaroni J1055 10.45lb 91ft/s 497ft/s 23.6G 2,621ft 12.2s 11s
OK Contrail J358 12.59lb 58ft/s 428ft/s 12.0G 2,766ft 13.4s 11s
OK Cesaroni J430 10.51lb 58ft/s 496ft/s 10.2G 2,937ft 13.4s 11s
OK AeroTech J460 10.49lb 62ft/s 508ft/s 11.0G 3,062ft 13.5s 11s
OK AeroTech J1299 10.59lb 106ft/s 569ft/s 30.6G 3,118ft 13.1s 12s
OK AMW J400 11.80lb 49ft/s 523ft/s 8.4G 3,323ft 14.4s 12s
OK AMW J1365 11.22lb 99ft/s 592ft/s 30.6G 3,339ft 13.5s 13s
OK Contrail J272 12.60lb 57ft/s 453ft/s 9.2G 3,367ft 14.9s 11s
OK AMW J475 11.86lb 55ft/s 566ft/s 11.0G 3,590ft 14.6s 12s
OK Contrail J642 12.70lb 81ft/s 558ft/s 24.9G 3,596ft 14.3s 13s
OK Cesaroni J380 11.60lb 48ft/s 567ft/s 7.6G 3,705ft 15.1s 12s
OK Gorilla J395 11.31lb 49ft/s 568ft/s 8.3G 3,708ft 15.1s 13s
OK Contrail J416 12.50lb 68ft/s 532ft/s 13.1G 3,740ft 15.1s 12s
OK Gorilla J465 11.36lb 53ft/s 586ft/s 12.4G 3,744ft 14.8s 13s
OK AeroTech J450 11.45lb 53ft/s 587ft/s 9.7G 3,799ft 15.0s 13s
OK AMW J395 11.55lb 53ft/s 571ft/s 8.2G 3,849ft 15.3s 13s
OK AMW J325 11.46lb 56ft/s 541ft/s 9.6G 3,901ft 15.5s 12s
OK Gorilla J485 11.37lb 54ft/s 610ft/s 10.6G 3,912ft 15.1s 13s
OK Gorilla J450 11.96lb 49ft/s 593ft/s 10.6G 3,920ft 15.4s 13s
OK AeroTech J1799 11.20lb 116ft/s 695ft/s 42.1G 3,967ft 14.3s 14s
OK Cesaroni J1520 11.01lb 105ft/s 700ft/s 34.4G 4,013ft 14.4s 14s
OK AMW J440 11.46lb 73ft/s 611ft/s 14.8G 4,037ft 15.0s 13s
OK Gorilla J535 11.45lb 69ft/s 631ft/s 12.3G 4,047ft 15.1s 13s
OK Loki J525 11.48lb 63ft/s 639ft/s 12.1G 4,074ft 15.2s 13s
OK Loki J175 11.51lb 48ft/s 472ft/s 7.2G 4,135ft 16.7s 10s
OK Loki J820 11.42lb 84ft/s 672ft/s 19.6G 4,186ft 15.0s 14s
OK AeroTech J401 10.76lb 56ft/s 627ft/s 9.0G 4,201ft 15.6s 13s
OK AeroTech J540 11.14lb 68ft/s 658ft/s 12.7G 4,276ft 15.4s 13s
OK AMW K1720 11.73lb 115ft/s 730ft/s 37.4G 4,298ft 14.9s 14s
OK AMW J475 12.04lb 58ft/s 630ft/s 10.0G 4,367ft 15.9s 13s
OK Cesaroni J355 11.34lb 52ft/s 613ft/s 7.7G 4,371ft 16.2s 13s
OK Loki J300 11.65lb 49ft/s 575ft/s 6.8G 4,373ft 16.6s 12s
OK AMW J745 11.44lb 79ft/s 699ft/s 16.2G 4,423ft 15.5s 14s
OK Cesaroni J295 11.22lb 53ft/s 583ft/s 7.8G 4,438ft 16.4s 12s
OK Gorilla K222 12.27lb 50ft/s 498ft/s 6.8G 4,534ft 17.5s 11s
OK AeroTech J415 11.33lb 56ft/s 664ft/s 9.9G 4,711ft 16.4s 13s
OK AeroTech K456 12.02lb 56ft/s 677ft/s 8.7G 4,713ft 16.5s 13s
OK AeroTech J800 11.14lb 81ft/s 737ft/s 18.2G 4,733ft 15.8s 14s
OK Cesaroni J449 11.22lb 58ft/s 693ft/s 10.3G 4,741ft 16.4s 14s
OK Cesaroni K360 11.47lb 50ft/s 662ft/s 6.9G 4,765ft 16.8s 13s
OK AMW K665 12.58lb 64ft/s 720ft/s 14.3G 4,768ft 16.1s 14s
OK Cesaroni J760 11.12lb 76ft/s 759ft/s 17.2G 4,790ft 15.9s 14s
OK AeroTech K400 11.38lb 59ft/s 671ft/s 9.6G 4,885ft 16.7s 13s
OK Gorilla K520 11.93lb 56ft/s 727ft/s 10.5G 4,997ft 16.8s 14s
OK Cesaroni K454 11.82lb 55ft/s 706ft/s 9.4G 5,005ft 16.8s 14s
OK Gorilla K555 12.23lb 59ft/s 734ft/s 11.2G 5,011ft 16.7s 14s
OK Gorilla K533 12.53lb 56ft/s 728ft/s 11.8G 5,086ft 16.8s 14s
OK Cesaroni K530 12.37lb 56ft/s 746ft/s 10.0G 5,100ft 16.9s 14s
OK Gorilla K630 12.19lb 66ft/s 756ft/s 14.1G 5,101ft 16.6s 14s
OK AeroTech K2050 11.60lb 121ft/s 871ft/s 41.6G 5,152ft 15.9s 15s
OK AMW K535 12.19lb 61ft/s 738ft/s 10.8G 5,200ft 17.0s 14s
OK KBA K700 12.06lb 73ft/s 798ft/s 16.3G 5,222ft 16.6s 15s
OK Cesaroni K2045 11.59lb 117ft/s 892ft/s 43.2G 5,225ft 15.9s 15s
OK AeroTech K513 12.38lb 61ft/s 761ft/s 11.1G 5,286ft 17.0s 14s
OK AeroTech K535 11.54lb 64ft/s 756ft/s 11.5G 5,321ft 17.0s 14s
OK AMW K455 12.07lb 68ft/s 720ft/s 13.4G 5,402ft 17.2s 14s
OK AeroTech K695 12.03lb 71ft/s 810ft/s 16.2G 5,418ft 16.8s 15s
OK AMW K610 12.64lb 65ft/s 770ft/s 12.3G 5,427ft 17.2s 15s
OK AMW K935 12.07lb 82ft/s 873ft/s 19.4G 5,706ft 16.9s 15s
OK Loki K690 14.04lb 62ft/s 826ft/s 12.8G 5,720ft 17.5s 15s
OK AMW K700 13.35lb 65ft/s 827ft/s 13.8G 5,733ft 17.4s 15s
OK Gorilla K327 12.76lb 57ft/s 656ft/s 11.2G 5,817ft 18.3s 13s
OK AeroTech K1100 11.70lb 95ft/s 908ft/s 24.8G 5,818ft 16.9s 15s
OK Cesaroni K500 12.00lb 61ft/s 805ft/s 10.4G 5,847ft 17.8s 15s
OK AeroTech K550 12.03lb 68ft/s 799ft/s 14.3G 5,865ft 17.6s 14s
OK Cesaroni K400 12.17lb 53ft/s 757ft/s 7.8G 5,865ft 18.3s 14s
OK AeroTech K540 11.56lb 74ft/s 828ft/s 15.7G 5,896ft 17.4s 14s
OK AMW K855 13.43lb 75ft/s 879ft/s 16.9G 5,955ft 17.5s 15s
OK Cesaroni K515 12.40lb 59ft/s 811ft/s 11.3G 5,972ft 17.9s 15s
OK Cesaroni K940 11.76lb 81ft/s 932ft/s 20.1G 6,006ft 17.2s 15s
OK Gorilla K700 12.53lb 67ft/s 875ft/s 13.5G 6,043ft 17.8s 15s
OK Cesaroni K445 11.83lb 64ft/s 790ft/s 11.7G 6,066ft 18.1s 14s
OK Loki K250 12.70lb 58ft/s 625ft/s 13.2G 6,126ft 19.7s 13s
OK Gorilla K763 12.70lb 67ft/s 902ft/s 14.8G 6,142ft 17.8s 16s
OK Cesaroni K650 13.14lb 64ft/s 887ft/s 11.9G 6,151ft 18.0s 15s
OK Cesaroni K630 11.86lb 68ft/s 891ft/s 14.0G 6,168ft 17.7s 15s
OK Cesaroni K520 12.22lb 61ft/s 848ft/s 10.3G 6,242ft 18.2s 15s
OK Gorilla K805 12.66lb 69ft/s 918ft/s 18.9G 6,276ft 17.7s 16s
OK AeroTech K805 12.15lb 74ft/s 928ft/s 15.7G 6,308ft 17.8s 16s
OK AMW K710 12.74lb 76ft/s 875ft/s 14.6G 6,317ft 18.0s 15s
OK AMW K670 12.91lb 72ft/s 889ft/s 13.5G 6,361ft 18.1s 16s
OK AeroTech K990 13.40lb 73ft/s 954ft/s 17.5G 6,436ft 17.9s 16s
OK AeroTech K850 13.25lb 75ft/s 963ft/s 17.9G 6,455ft 17.9s 16s
OK AeroTech K1103 11.97lb 100ft/s 1,010ft/s 29.2G 6,505ft 17.5s 16s
OK AMW K580 12.77lb 77ft/s 863ft/s 18.0G 6,562ft 18.4s 15s
OK Cesaroni K740 11.99lb 78ft/s 976ft/s 15.6G 6,737ft 18.2s 16s
OK AMW K1250 12.75lb 98ft/s 1,035ft/s 27.5G 6,780ft 17.9s 16s
OK Loki K960 12.60lb 95ft/s 1,013ft/s 26.5G 6,834ft 18.0s 16s
OK Cesaroni K675 13.03lb 65ft/s 956ft/s 14.6G 6,992ft 18.7s 16s
OK Loki K527 13.10lb 64ft/s 895ft/s 12.1G 6,996ft 19.2s 15s
OK Cesaroni K635 12.65lb 68ft/s 962ft/s 12.8G 7,006ft 18.8s 16s
OK Cesaroni K650 12.52lb 73ft/s 970ft/s 21.1G 7,045ft 18.7s 15s
OK Cesaroni K1200 12.35lb 97ft/s 1,105ft/s 24.0G 7,064ft 18.1s 16s
OK Gorilla K980 14.17lb 78ft/s 1,001ft/s 20.4G 7,064ft 18.6s 16s
OK Cesaroni K490 12.84lb 59ft/s 901ft/s 9.3G 7,099ft 19.4s 15s
OK AeroTech K828 13.65lb 80ft/s 1,019ft/s 20.6G 7,117ft 18.6s 16s
OK AeroTech K1275 13.13lb 95ft/s 1,090ft/s 26.0G 7,201ft 18.3s 16s
OK AeroTech K270 13.38lb 48ft/s 692ft/s 6.2G 7,324ft 21.2s 13s
OK Cesaroni K570 12.46lb 74ft/s 953ft/s 15.2G 7,355ft 19.1s 15s
OK AMW K1075 14.57lb 78ft/s 1,047ft/s 19.4G 7,396ft 19.0s 17s
OK Cesaroni K780 12.50lb 77ft/s 1,068ft/s 17.0G 7,401ft 18.8s 16s
OK Cesaroni K600 12.92lb 69ft/s 979ft/s 12.6G 7,428ft 19.3s 16s
OK AeroTech K700 13.24lb 79ft/s 1,020ft/s 17.2G 7,710ft 19.2s 16s
OK Cesaroni K815 13.59lb 72ft/s 1,087ft/s 18.9G 7,744ft 19.3s 16s
OK Cesaroni K750 13.28lb 71ft/s 1,070ft/s 15.4G 7,819ft 19.3s 16s
OK AeroTech K375 13.39lb 88ft/s 850ft/s 21.6G 7,832ft 20.2s 14s
OK AeroTech K480 13.33lb 73ft/s 963ft/s 14.4G 7,847ft 19.8s 15s
OK Gorilla K1075 14.35lb 82ft/s 1,123ft/s 19.0G 7,882ft 19.3s 17s
OK Cesaroni K1440 12.92lb 103ft/s 1,237ft/s 32.1G 7,900ft 18.7s 17s
OK KBA K1750 14.40lb 101ft/s 1,234ft/s 34.6G 7,912ft 18.9s 17s
OK Loki K830 14.04lb 63ft/s 1,145ft/s 16.8G 7,940ft 19.7s 17s
OK Cesaroni K711 13.60lb 75ft/s 1,051ft/s 24.1G 7,981ft 19.6s 16s
OK Cesaroni K820 13.12lb 79ft/s 1,107ft/s 27.3G 8,048ft 19.3s 16s
OK Gorilla K1185 14.35lb 79ft/s 1,183ft/s 21.5G 8,123ft 19.5s 17s
OK Cesaroni K260 13.26lb 50ft/s 763ft/s 6.3G 8,185ft 21.9s 13s
OK KBA K750 14.56lb 76ft/s 1,060ft/s 17.3G 8,201ft 19.9s 16s
OK AMW K1130 14.42lb 86ft/s 1,160ft/s 23.2G 8,224ft 19.5s 17s
OK Gorilla K470 13.88lb 76ft/s 914ft/s 16.2G 8,276ft 20.3s 15s
OK AeroTech K1050 13.61lb 90ft/s 1,199ft/s 23.4G 8,284ft 19.4s 17s
OK Cesaroni K660 13.05lb 83ft/s 1,073ft/s 17.7G 8,297ft 19.8s 16s
OK Cesaroni K590 13.15lb 98ft/s 987ft/s 30.0G 8,336ft 20.0s 16s
OK AMW L1276 15.28lb 83ft/s 1,205ft/s 21.6G 8,496ft 19.9s 18s
OK KBA L2300 14.55lb 118ft/s 1,345ft/s 46.0G 8,585ft 19.4s 18s
OK AMW L985 14.42lb 87ft/s 1,168ft/s 21.9G 8,629ft 20.0s 17s
OK Loki K350 14.35lb 74ft/s 833ft/s 18.2G 8,652ft 21.8s 15s
OK AeroTech L1090 14.11lb 87ft/s 1,195ft/s 20.1G 8,655ft 19.9s 17s
OK AeroTech L1000 13.59lb 91ft/s 1,234ft/s 20.9G 8,713ft 19.7s 17s
OK Cesaroni K300 13.75lb 55ft/s 836ft/s 7.9G 8,898ft 22.3s 14s
OK Cesaroni L990 13.68lb 86ft/s 1,241ft/s 25.7G 8,904ft 19.9s 17s
OK Cesaroni L1030 13.90lb 79ft/s 1,278ft/s 24.0G 8,907ft 19.9s 17s
OK Loki L1400 14.35lb 99ft/s 1,320ft/s 28.5G 8,920ft 19.8s 18s
OK Cesaroni L730 13.70lb 81ft/s 1,148ft/s 19.0G 9,048ft 20.4s 17s
OK Cesaroni L805 14.27lb 79ft/s 1,183ft/s 22.3G 9,098ft 20.4s 17s
OK Cesaroni L640 13.70lb 93ft/s 1,063ft/s 24.1G 9,222ft 20.7s 16s
OK Cesaroni L935 14.35lb 86ft/s 1,283ft/s 23.1G 9,611ft 20.6s 17s
OK Loki L1040 15.28lb 83ft/s 1,444ft/s 19.0G 10,979ft 21.7s 18s
warningsD AMW K590 12.54lb 11:1 thrust/weight ratio (no data)
warningsD Gorilla K695 12.05lb 13:1 thrust/weight ratio (no data)
warningsD Gorilla K828 12.80lb 15:1 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 (43ft/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 (35ft/s)
failedG Cesaroni I150 speed at end of launch guide too slow (32ft/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 (29ft/s)
failedG Cesaroni I165 speed at end of launch guide too slow (35ft/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 (34ft/s)
failedG Contrail J245 speed at end of launch guide too slow (47ft/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 (38ft/s)
failedG Cesaroni J145 speed at end of launch guide too slow (41ft/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 (46ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (39ft/s)
failedG Hypertek J120 speed at end of launch guide too slow (39ft/s)
failedG AeroTech J180 speed at end of launch guide too slow (47ft/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 (42ft/s)
failedG Cesaroni J210 speed at end of launch guide too slow (43ft/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 (42ft/s)
failedG Cesaroni J244 speed at end of launch guide too slow (39ft/s)
failedG Loki J350 speed at end of launch guide too slow (47ft/s)
failedG Gorilla J167 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni J360 speed at end of launch guide too slow (47ft/s)
failedG AeroTech J135 speed at end of launch guide too slow (36ft/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 (41ft/s)
failedG Cesaroni K160 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni K261 speed at end of launch guide too slow (43ft/s)
failedG AeroTech K250 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni L265 speed at end of launch guide too slow (47ft/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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