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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 167 motors that fit and appear to have enough thrust (627 motors didn't fit, 17 motors failed safety checks). 181 motor had thrust curves available and 329 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:   Alien Invader x4
Owner: Phill Ash
Body Diameter: 4.00in
Dry Weight: 132.0oz
MMT Diameter: 54.0mm
MMT Length: 32.00in
CD: 0.80

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 150.6oz 51ft/s 242ft/s 5.2G 957ft 8.3s 6s
OK AeroTech I229 150.1oz 51ft/s 259ft/s 5.6G 1,040ft 8.5s 7s
OK AeroTech I599 150.1oz 92ft/s 294ft/s 17.3G 1,073ft 8.0s 7s
OK Cesaroni I445 152.3oz 71ft/s 325ft/s 11.6G 1,322ft 9.0s 8s
OK Cesaroni I218 152.5oz 50ft/s 291ft/s 5.2G 1,324ft 9.6s 7s
OK Contrail J245 186.7oz 56ft/s 307ft/s 7.5G 1,565ft 10.3s 8s
OK Contrail J355 187.2oz 62ft/s 355ft/s 9.7G 1,717ft 10.5s 9s
OK Hypertek J250 177.6oz 60ft/s 336ft/s 7.3G 1,838ft 11.0s 8s
OK Hypertek J170 177.2oz 55ft/s 307ft/s 6.1G 1,898ft 11.6s 7s
OK Contrail J292 186.4oz 67ft/s 349ft/s 9.6G 1,901ft 11.1s 9s
OK Cesaroni J145 161.5oz 49ft/s 305ft/s 9.8G 2,028ft 12.1s 7s
OK Cesaroni J280 165.7oz 50ft/s 409ft/s 6.0G 2,098ft 11.7s 9s
OK AeroTech J250 157.0oz 58ft/s 391ft/s 6.7G 2,162ft 11.7s 9s
OK Hypertek J270 177.7oz 66ft/s 383ft/s 9.0G 2,228ft 11.8s 9s
OK Cesaroni J1055 159.2oz 107ft/s 516ft/s 24.7G 2,290ft 11.0s 10s
OK AeroTech J315 162.0oz 58ft/s 429ft/s 7.4G 2,291ft 11.9s 9s
OK Hypertek J190 177.6oz 57ft/s 355ft/s 6.7G 2,307ft 12.5s 8s
OK AeroTech J180 160.5oz 56ft/s 378ft/s 6.3G 2,444ft 12.6s 8s
OK Cesaroni J240 162.9oz 50ft/s 430ft/s 5.5G 2,469ft 12.6s 9s
OK Gorilla J365 174.5oz 50ft/s 480ft/s 9.3G 2,523ft 12.4s 10s
OK Cesaroni J210 161.7oz 51ft/s 399ft/s 6.3G 2,553ft 13.1s 9s
OK Cesaroni J430 160.2oz 70ft/s 504ft/s 10.7G 2,562ft 12.1s 10s
OK AeroTech J275 162.5oz 53ft/s 434ft/s 6.4G 2,568ft 12.7s 9s
OK Cesaroni J293 161.6oz 54ft/s 465ft/s 6.9G 2,576ft 12.6s 10s
OK Cesaroni J244 164.1oz 48ft/s 445ft/s 4.8G 2,600ft 13.0s 10s
OK AeroTech J460 159.8oz 74ft/s 515ft/s 11.5G 2,647ft 12.1s 10s
OK AeroTech J1299 161.4oz 125ft/s 590ft/s 31.9G 2,650ft 11.6s 11s
OK AMW J1365 171.5oz 124ft/s 612ft/s 31.8G 2,824ft 12.0s 11s
OK Gorilla J167 174.9oz 55ft/s 374ft/s 6.6G 2,851ft 14.1s 8s
OK AMW J400 180.7oz 58ft/s 525ft/s 8.5G 2,873ft 13.0s 11s
OK Loki J350 176.4oz 57ft/s 524ft/s 8.2G 2,901ft 13.1s 10s
OK AMW J475 181.7oz 66ft/s 569ft/s 11.3G 3,055ft 13.0s 11s
OK Cesaroni J360 170.9oz 56ft/s 552ft/s 10.4G 3,109ft 13.4s 10s
OK Cesaroni J380 177.6oz 56ft/s 567ft/s 7.7G 3,152ft 13.5s 11s
OK Gorilla J395 172.9oz 58ft/s 568ft/s 8.6G 3,157ft 13.5s 11s
OK Gorilla J465 173.7oz 64ft/s 589ft/s 12.6G 3,161ft 13.2s 11s
OK AeroTech J450 175.1oz 64ft/s 589ft/s 10.1G 3,217ft 13.4s 11s
OK AeroTech J1799 171.2oz 138ft/s 718ft/s 44.1G 3,241ft 12.4s 12s
OK AMW J395 176.7oz 63ft/s 567ft/s 8.6G 3,269ft 13.6s 11s
OK Cesaroni J1520 168.2oz 126ft/s 722ft/s 35.2G 3,275ft 12.5s 12s
OK Gorilla J485 174.0oz 66ft/s 611ft/s 11.0G 3,283ft 13.4s 11s
OK Gorilla J450 183.3oz 60ft/s 593ft/s 10.9G 3,310ft 13.7s 11s
OK AMW J325 175.4oz 67ft/s 528ft/s 10.1G 3,327ft 13.8s 10s
OK Gorilla J535 175.2oz 80ft/s 634ft/s 12.9G 3,368ft 13.3s 11s
OK AMW J440 175.4oz 87ft/s 608ft/s 15.5G 3,369ft 13.2s 11s
OK Loki J525 175.7oz 73ft/s 642ft/s 12.3G 3,389ft 13.4s 11s
OK Loki J820 174.7oz 101ft/s 678ft/s 20.4G 3,432ft 13.0s 12s
OK AeroTech J401 164.2oz 67ft/s 620ft/s 9.5G 3,489ft 13.7s 11s
OK AMW K1720 179.7oz 137ft/s 750ft/s 38.8G 3,496ft 12.9s 12s
OK AeroTech J540 170.2oz 80ft/s 653ft/s 13.3G 3,515ft 13.5s 11s
OK Loki J175 176.1oz 57ft/s 455ft/s 7.6G 3,573ft 15.1s 9s
OK AMW J745 175.0oz 94ft/s 703ft/s 17.0G 3,619ft 13.5s 12s
OK AMW J475 184.7oz 70ft/s 626ft/s 10.4G 3,644ft 14.1s 11s
OK Cesaroni J355 173.4oz 62ft/s 598ft/s 8.0G 3,646ft 14.3s 11s
OK Loki J300 178.4oz 59ft/s 558ft/s 7.1G 3,694ft 14.7s 10s
OK Cesaroni J295 171.5oz 63ft/s 561ft/s 8.2G 3,723ft 14.6s 11s
OK AeroTech J800 170.3oz 95ft/s 735ft/s 19.1G 3,817ft 13.6s 12s
OK Cesaroni J760 170.0oz 91ft/s 760ft/s 18.0G 3,855ft 13.7s 12s
OK AeroTech J415 173.2oz 67ft/s 649ft/s 10.2G 3,864ft 14.3s 11s
OK AeroTech K456 184.3oz 64ft/s 665ft/s 9.1G 3,876ft 14.4s 11s
OK Cesaroni J449 171.6oz 70ft/s 682ft/s 10.8G 3,877ft 14.3s 11s
OK AMW K665 193.3oz 75ft/s 716ft/s 14.5G 3,882ft 14.0s 12s
OK Gorilla K222 188.3oz 59ft/s 475ft/s 7.1G 3,893ft 15.8s 9s
OK Cesaroni K360 175.5oz 59ft/s 643ft/s 7.1G 3,931ft 14.8s 11s
OK AeroTech K400 174.1oz 71ft/s 653ft/s 10.1G 4,018ft 14.7s 11s
OK AeroTech K2050 177.6oz 147ft/s 891ft/s 43.1G 4,050ft 13.5s 13s
OK Gorilla K520 182.9oz 68ft/s 717ft/s 10.7G 4,068ft 14.6s 12s
OK Gorilla K555 187.6oz 68ft/s 727ft/s 11.5G 4,075ft 14.6s 12s
OK Cesaroni K454 181.1oz 66ft/s 689ft/s 9.9G 4,082ft 14.7s 12s
OK Cesaroni K2045 177.5oz 142ft/s 915ft/s 44.8G 4,090ft 13.5s 13s
OK Gorilla K630 187.0oz 77ft/s 749ft/s 14.4G 4,119ft 14.4s 12s
OK AMW K475 184.6oz 66ft/s 706ft/s 9.8G 4,121ft 14.7s 12s
OK Cesaroni K530 189.8oz 67ft/s 733ft/s 10.0G 4,129ft 14.7s 12s
OK Gorilla K533 192.6oz 67ft/s 715ft/s 12.2G 4,133ft 14.6s 12s
OK KBA K700 185.0oz 85ft/s 795ft/s 16.4G 4,182ft 14.3s 12s
OK AeroTech K185 182.6oz 50ft/s 510ft/s 5.6G 4,213ft 16.3s 9s
OK AMW K535 187.0oz 74ft/s 723ft/s 11.2G 4,219ft 14.8s 12s
OK AeroTech K513 190.1oz 70ft/s 744ft/s 11.3G 4,258ft 14.7s 12s
OK AeroTech K535 176.6oz 79ft/s 734ft/s 12.0G 4,275ft 14.6s 12s
OK AeroTech K695 184.5oz 83ft/s 797ft/s 16.9G 4,309ft 14.4s 12s
OK AMW K610 194.3oz 75ft/s 756ft/s 12.8G 4,378ft 14.8s 12s
OK AMW K455 185.1oz 79ft/s 693ft/s 14.1G 4,379ft 14.9s 12s
OK AMW K935 185.2oz 98ft/s 868ft/s 20.1G 4,498ft 14.4s 13s
OK AeroTech K1100 179.1oz 110ft/s 900ft/s 25.9G 4,540ft 14.3s 13s
OK AMW K700 205.7oz 75ft/s 812ft/s 13.7G 4,567ft 15.0s 13s
OK Loki K690 216.7oz 72ft/s 813ft/s 13.0G 4,576ft 15.1s 13s
OK AeroTech K540 177.0oz 87ft/s 794ft/s 16.4G 4,657ft 14.9s 12s
OK AeroTech K550 184.5oz 79ft/s 769ft/s 14.7G 4,662ft 15.1s 12s
OK Cesaroni K500 184.1oz 70ft/s 773ft/s 10.8G 4,662ft 15.3s 12s
OK Cesaroni K940 180.2oz 97ft/s 921ft/s 21.1G 4,678ft 14.5s 13s
OK AMW K855 206.8oz 87ft/s 867ft/s 17.0G 4,699ft 14.9s 13s
OK Cesaroni K400 186.7oz 64ft/s 719ft/s 8.2G 4,732ft 15.9s 12s
OK Cesaroni K515 190.3oz 72ft/s 780ft/s 11.8G 4,763ft 15.4s 12s
OK Gorilla K327 196.1oz 69ft/s 619ft/s 11.6G 4,764ft 16.0s 11s
OK Gorilla K700 192.5oz 79ft/s 857ft/s 14.0G 4,776ft 15.2s 13s
OK Gorilla K763 195.2oz 83ft/s 884ft/s 15.3G 4,829ft 15.2s 13s
OK Cesaroni K630 181.7oz 84ft/s 862ft/s 14.7G 4,835ft 15.1s 12s
OK Cesaroni K445 181.3oz 77ft/s 749ft/s 12.2G 4,841ft 15.5s 12s
OK Cesaroni K650 202.2oz 73ft/s 862ft/s 11.8G 4,849ft 15.4s 13s
OK Gorilla K805 194.6oz 85ft/s 898ft/s 19.3G 4,904ft 15.1s 13s
OK AeroTech K805 186.4oz 87ft/s 903ft/s 16.3G 4,925ft 15.1s 13s
OK Cesaroni K520 187.6oz 74ft/s 811ft/s 10.8G 4,944ft 15.6s 12s
OK AMW K710 195.9oz 89ft/s 848ft/s 15.2G 4,982ft 15.3s 13s
OK AeroTech K1103 183.5oz 121ft/s 996ft/s 30.6G 5,001ft 14.7s 13s
OK AMW K670 198.5oz 84ft/s 862ft/s 14.1G 5,016ft 15.5s 13s
OK AeroTech K990 206.4oz 86ft/s 938ft/s 17.6G 5,018ft 15.2s 13s
OK AeroTech K850 204.0oz 88ft/s 946ft/s 18.1G 5,020ft 15.2s 13s
OK Loki K250 195.2oz 67ft/s 581ft/s 13.8G 5,069ft 17.4s 10s
OK AMW K580 196.3oz 90ft/s 826ft/s 18.8G 5,179ft 15.7s 13s
OK AMW K1250 196.0oz 119ft/s 1,023ft/s 28.6G 5,214ft 15.0s 13s
OK Cesaroni K740 183.8oz 92ft/s 942ft/s 16.1G 5,215ft 15.3s 13s
OK Loki K960 193.6oz 116ft/s 990ft/s 27.6G 5,263ft 15.2s 13s
OK Cesaroni K1200 189.6oz 109ft/s 1,083ft/s 25.0G 5,373ft 15.1s 13s
OK Cesaroni K675 200.4oz 80ft/s 912ft/s 15.2G 5,441ft 15.9s 13s
OK Cesaroni K635 194.4oz 80ft/s 913ft/s 13.3G 5,444ft 15.9s 13s
OK Cesaroni K650 192.3oz 86ft/s 924ft/s 22.0G 5,468ft 15.8s 12s
OK Gorilla K980 218.7oz 92ft/s 980ft/s 20.7G 5,480ft 15.8s 14s
OK AeroTech K828 210.4oz 95ft/s 985ft/s 21.4G 5,493ft 15.7s 13s
OK AeroTech K1275 202.1oz 116ft/s 1,061ft/s 27.0G 5,493ft 15.3s 13s
OK Loki K527 201.6oz 77ft/s 852ft/s 12.6G 5,518ft 16.4s 12s
OK Cesaroni K490 197.4oz 71ft/s 841ft/s 9.7G 5,584ft 16.6s 13s
OK Cesaroni K780 192.0oz 91ft/s 1,020ft/s 17.7G 5,661ft 15.7s 13s
OK Cesaroni K570 191.4oz 87ft/s 894ft/s 15.9G 5,716ft 16.2s 12s
OK AMW K1075 225.1oz 92ft/s 1,027ft/s 20.1G 5,728ft 16.1s 14s
OK Cesaroni K600 198.7oz 80ft/s 921ft/s 13.1G 5,766ft 16.3s 13s
OK Cesaroni K1440 198.8oz 127ft/s 1,202ft/s 33.2G 5,921ft 15.5s 14s
OK Cesaroni K261 200.1oz 52ft/s 658ft/s 5.5G 5,922ft 18.5s 10s
OK Cesaroni K815 209.5oz 84ft/s 1,040ft/s 19.6G 5,932ft 16.2s 13s
OK AeroTech K700 203.8oz 93ft/s 963ft/s 17.8G 5,936ft 16.2s 13s
OK KBA K1750 222.5oz 118ft/s 1,222ft/s 34.0G 5,963ft 15.7s 14s
OK AeroTech K270 206.1oz 56ft/s 640ft/s 6.4G 5,968ft 18.7s 10s
OK Cesaroni K750 204.6oz 88ft/s 1,011ft/s 15.9G 5,992ft 16.2s 13s
OK Gorilla K1075 221.6oz 97ft/s 1,090ft/s 19.2G 6,030ft 16.2s 14s
OK Loki K830 216.7oz 73ft/s 1,106ft/s 15.0G 6,076ft 16.5s 14s
OK AeroTech K480 205.3oz 85ft/s 902ft/s 15.0G 6,113ft 16.8s 12s
OK Cesaroni K711 209.5oz 88ft/s 985ft/s 25.0G 6,135ft 16.5s 13s
OK Cesaroni K820 201.9oz 94ft/s 1,051ft/s 28.5G 6,135ft 16.2s 13s
OK Gorilla K1185 221.6oz 94ft/s 1,150ft/s 21.6G 6,176ft 16.3s 14s
OK AMW K1130 222.8oz 103ft/s 1,107ft/s 23.2G 6,191ft 16.3s 14s
OK AeroTech K375 206.3oz 105ft/s 779ft/s 22.3G 6,207ft 17.3s 12s
OK AeroTech K1050 209.7oz 107ft/s 1,149ft/s 24.3G 6,267ft 16.2s 14s
OK KBA K750 225.0oz 89ft/s 1,006ft/s 17.9G 6,317ft 16.8s 13s
OK AeroTech K455 212.6oz 104ft/s 813ft/s 21.0G 6,317ft 17.4s 12s
OK Cesaroni K660 200.7oz 98ft/s 999ft/s 18.4G 6,353ft 16.6s 13s
OK KBA L2300 224.8oz 148ft/s 1,347ft/s 46.4G 6,371ft 16.0s 15s
OK Cesaroni K590 202.3oz 117ft/s 902ft/s 31.3G 6,456ft 16.9s 13s
OK AMW L1276 236.4oz 98ft/s 1,171ft/s 21.1G 6,462ft 16.7s 15s
OK Gorilla K470 214.1oz 88ft/s 843ft/s 16.7G 6,474ft 17.3s 12s
OK AeroTech L1090 217.8oz 103ft/s 1,139ft/s 20.9G 6,560ft 16.6s 14s
OK AeroTech L1000 209.4oz 102ft/s 1,171ft/s 21.8G 6,566ft 16.4s 13s
OK AMW L985 222.7oz 103ft/s 1,116ft/s 22.7G 6,566ft 16.7s 14s
OK Cesaroni K260 204.2oz 59ft/s 694ft/s 6.6G 6,579ft 19.1s 10s
OK Loki L1400 221.6oz 111ft/s 1,278ft/s 27.2G 6,667ft 16.4s 14s
OK Cesaroni L1030 214.5oz 94ft/s 1,204ft/s 24.9G 6,686ft 16.6s 14s
OK Cesaroni L990 210.9oz 102ft/s 1,177ft/s 26.8G 6,703ft 16.5s 14s
OK Cesaroni L730 211.3oz 96ft/s 1,066ft/s 19.7G 6,885ft 17.1s 13s
OK Loki K350 221.6oz 85ft/s 756ft/s 18.9G 6,885ft 18.8s 12s
OK Cesaroni L805 220.3oz 92ft/s 1,099ft/s 23.1G 6,916ft 17.1s 13s
OK Cesaroni K300 212.1oz 64ft/s 760ft/s 8.2G 7,079ft 19.3s 11s
OK Cesaroni L640 211.2oz 105ft/s 969ft/s 24.7G 7,100ft 17.4s 12s
OK AeroTech K250 210.0oz 53ft/s 733ft/s 6.5G 7,198ft 20.0s 10s
OK Cesaroni L935 221.7oz 102ft/s 1,195ft/s 24.0G 7,233ft 17.1s 14s
OK Cesaroni L265 219.5oz 56ft/s 714ft/s 6.6G 7,433ft 20.8s 10s
OK Loki L1040 236.5oz 98ft/s 1,346ft/s 19.2G 8,203ft 18.0s 14s
warningsD AMW K590 192.6oz 11:1 thrust/weight ratio (no data)
warningsD Gorilla K695 184.8oz 14:1 thrust/weight ratio (no data)
warningsD Gorilla K828 196.8oz 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 (32ft/s)
failedG Cesaroni I140 speed at end of launch guide too slow (36ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (33ft/s)
failedG AeroTech I170 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni I150 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni I120 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni I165 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni I100 speed at end of launch guide too slow (47ft/s)
failedG AeroTech I65 speed at end of launch guide too slow (40ft/s)
failedG Hypertek J115 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni J250 speed at end of launch guide too slow (46ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (35ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (47ft/s)
failedG Hypertek J120 speed at end of launch guide too slow (46ft/s)
failedG AeroTech J135 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni J140 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni K160 speed at end of launch guide too slow (46ft/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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