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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 133 motors that fit and appear to have enough thrust (673 motors didn't fit, 5 motors failed safety checks). 138 motor had thrust curves available and 285 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:   LOC IV
Owner: Jim Lane
Body Diameter: 4.00in
Dry Weight: 37.0oz
MMT Diameter: 38.0mm
MMT Length: 18.00in
CD: 0.60

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 Contrail G300 56.2oz 152ft/s 197ft/s 51.2G 488ft 5.3s 5s
OK Contrail G130 55.2oz 83ft/s 182ft/s 33.9G 500ft 5.6s 5s
OK Contrail G234 56.2oz 128ft/s 223ft/s 33.9G 618ft 6.0s 5s
OK Loki G69 45.5oz 58ft/s 215ft/s 6.7G 688ft 6.6s 5s
OK AeroTech G61 43.8oz 53ft/s 212ft/s 5.6G 705ft 6.9s 5s
OK AeroTech G67 44.1oz 56ft/s 225ft/s 6.4G 706ft 6.8s 5s
OK AeroTech G339 43.4oz 126ft/s 284ft/s 30.3G 748ft 6.4s 6s
OK Loki G70 45.5oz 58ft/s 225ft/s 7.0G 752ft 7.0s 5s
OK Loki G80 46.0oz 63ft/s 235ft/s 7.8G 764ft 6.9s 5s
OK Loki G94 45.5oz 68ft/s 251ft/s 9.4G 799ft 6.9s 5s
OK Contrail G123 55.0oz 80ft/s 249ft/s 22.3G 807ft 6.9s 6s
OK Contrail G100 55.0oz 74ft/s 245ft/s 10.9G 834ft 7.1s 6s
OK Cesaroni G69 43.9oz 52ft/s 248ft/s 6.1G 851ft 7.5s 6s
OK Cesaroni G79 45.0oz 50ft/s 265ft/s 6.2G 853ft 7.4s 6s
OK Cesaroni G185 43.6oz 84ft/s 308ft/s 15.7G 864ft 6.9s 6s
OK Loki G66 45.8oz 63ft/s 246ft/s 8.1G 889ft 7.5s 5s
OK AeroTech G69 44.1oz 53ft/s 269ft/s 5.6G 918ft 7.6s 6s
OK Contrail H222 55.3oz 113ft/s 294ft/s 43.1G 940ft 7.2s 6s
OK Cesaroni G60 44.3oz 53ft/s 263ft/s 6.0G 940ft 7.8s 6s
OK Cesaroni G115 43.9oz 66ft/s 309ft/s 9.8G 968ft 7.5s 6s
OK Cesaroni G78 43.9oz 53ft/s 283ft/s 9.7G 977ft 7.7s 6s
OK AeroTech H73 47.9oz 50ft/s 303ft/s 5.4G 1,245ft 8.9s 6s
OK Loki H100 48.8oz 67ft/s 357ft/s 9.3G 1,333ft 8.5s 7s
warningsW AeroTech H283 45.7oz 111ft/s 451ft/s 25.2G 1,338ft 8.0s 7s
OK AeroTech H148 47.9oz 82ft/s 412ft/s 13.5G 1,429ft 8.6s 7s
OK AeroTech H130 45.4oz 99ft/s 401ft/s 19.6G 1,435ft 8.4s 7s
OK AeroTech H669 45.9oz 174ft/s 538ft/s 85.9G 1,440ft 8.0s 8s
OK AeroTech H219 46.2oz 106ft/s 495ft/s 21.8G 1,554ft 8.5s 7s
OK AeroTech H123 46.7oz 70ft/s 392ft/s 10.4G 1,555ft 9.0s 7s
OK AeroTech H100 46.2oz 63ft/s 395ft/s 8.8G 1,563ft 9.1s 7s
OK Loki H144 48.9oz 94ft/s 433ft/s 17.3G 1,570ft 8.8s 7s
OK Cesaroni H123 47.5oz 63ft/s 445ft/s 10.0G 1,580ft 9.1s 7s
OK Cesaroni H143 49.2oz 68ft/s 457ft/s 10.3G 1,595ft 9.1s 7s
OK Loki H90 48.8oz 69ft/s 377ft/s 9.8G 1,596ft 9.3s 7s
OK Loki H125 49.1oz 83ft/s 414ft/s 14.1G 1,597ft 9.0s 7s
OK AeroTech H242 46.3oz 92ft/s 494ft/s 17.3G 1,625ft 8.8s 7s
OK Cesaroni H400 47.0oz 123ft/s 586ft/s 32.5G 1,634ft 8.5s 8s
OK Loki H160 48.8oz 100ft/s 468ft/s 20.3G 1,656ft 8.8s 7s
OK Cesaroni H120 47.4oz 68ft/s 464ft/s 10.2G 1,749ft 9.4s 7s
OK AeroTech H112 50.4oz 57ft/s 394ft/s 6.9G 1,760ft 10.0s 7s
OK Cesaroni H125 47.3oz 68ft/s 486ft/s 10.0G 1,778ft 9.5s 7s
OK Cesaroni H225 43.8oz 96ft/s 593ft/s 20.2G 1,781ft 8.8s 8s
OK Cesaroni H110 48.5oz 61ft/s 454ft/s 7.8G 1,797ft 9.7s 7s
OK AeroTech H178 48.4oz 75ft/s 543ft/s 14.0G 1,823ft 9.3s 8s
OK Cesaroni H152 47.5oz 78ft/s 511ft/s 15.1G 1,826ft 9.3s 7s
OK AeroTech H550 48.1oz 159ft/s 702ft/s 47.8G 1,863ft 8.7s 8s
OK AeroTech H550 48.4oz 158ft/s 692ft/s 47.2G 1,878ft 8.8s 8s
OK AeroTech H999 48.7oz 208ft/s 743ft/s 118.0G 1,881ft 8.7s 8s
warningsW Cesaroni H565 49.8oz 148ft/s 705ft/s 44.0G 1,895ft 8.9s 8s
OK Cesaroni H100 48.5oz 62ft/s 456ft/s 7.8G 1,910ft 10.1s 7s
OK AeroTech I218 50.1oz 98ft/s 578ft/s 19.5G 1,957ft 9.4s 8s
OK AeroTech H170 48.6oz 83ft/s 554ft/s 13.8G 2,002ft 9.6s 7s
OK AeroTech I180 50.6oz 108ft/s 531ft/s 24.8G 2,009ft 9.5s 8s
OK AeroTech I161 49.9oz 84ft/s 541ft/s 14.6G 2,067ft 9.7s 7s
OK Cesaroni I180 50.9oz 77ft/s 592ft/s 13.1G 2,078ft 9.8s 8s
OK AeroTech I245 49.9oz 113ft/s 611ft/s 28.5G 2,083ft 9.4s 8s
OK AeroTech I357 49.1oz 116ft/s 654ft/s 26.8G 2,087ft 9.3s 8s
OK Cesaroni I566 50.6oz 136ft/s 792ft/s 42.4G 2,104ft 9.2s 9s
OK AeroTech I225 54.1oz 83ft/s 601ft/s 16.5G 2,115ft 9.7s 8s
OK AeroTech I175 49.3oz 95ft/s 541ft/s 17.3G 2,133ft 10.0s 8s
OK AeroTech I140 49.6oz 74ft/s 519ft/s 11.9G 2,143ft 10.0s 8s
OK Cesaroni I212 53.8oz 81ft/s 623ft/s 14.8G 2,152ft 9.9s 8s
OK AeroTech H45 49.9oz 51ft/s 362ft/s 5.1G 2,218ft 11.7s 6s
OK Cesaroni I800 53.1oz 163ft/s 877ft/s 57.0G 2,235ft 9.3s 9s
OK AeroTech I1299 51.9oz 219ft/s 927ft/s 104.0G 2,238ft 9.2s 9s
OK Cesaroni I345 50.9oz 112ft/s 752ft/s 26.6G 2,275ft 9.6s 8s
OK AeroTech I285 54.4oz 103ft/s 698ft/s 23.9G 2,328ft 9.9s 8s
OK Cesaroni I195 51.7oz 82ft/s 636ft/s 15.4G 2,344ft 10.1s 8s
OK AeroTech I154 54.4oz 68ft/s 512ft/s 10.1G 2,357ft 10.8s 7s
OK AeroTech I305 57.5oz 108ft/s 705ft/s 24.5G 2,380ft 9.9s 8s
OK Cesaroni I236 51.1oz 98ft/s 692ft/s 20.9G 2,391ft 10.0s 8s
OK Cesaroni I170 50.8oz 81ft/s 652ft/s 14.9G 2,402ft 10.2s 8s
OK AeroTech I300 52.6oz 119ft/s 729ft/s 30.9G 2,420ft 9.8s 8s
OK Cesaroni I175 52.4oz 79ft/s 632ft/s 12.0G 2,430ft 10.4s 8s
OK AeroTech I211 53.0oz 98ft/s 652ft/s 20.7G 2,453ft 10.1s 8s
OK Cesaroni I223 54.4oz 83ft/s 693ft/s 15.8G 2,454ft 10.2s 8s
OK AeroTech I195 57.2oz 101ft/s 642ft/s 21.7G 2,479ft 10.3s 8s
OK Loki I316 56.0oz 123ft/s 739ft/s 31.0G 2,534ft 10.0s 9s
OK Loki I405 56.2oz 149ft/s 812ft/s 50.6G 2,572ft 9.9s 9s
OK Cesaroni I287 58.3oz 92ft/s 764ft/s 18.9G 2,595ft 10.3s 9s
OK Loki I210 56.0oz 109ft/s 685ft/s 27.4G 2,688ft 10.4s 8s
OK Loki I430 56.0oz 122ft/s 889ft/s 33.2G 2,695ft 10.2s 9s
OK Loki I377 56.8oz 138ft/s 803ft/s 40.8G 2,701ft 10.2s 9s
OK Cesaroni I285 54.8oz 103ft/s 783ft/s 22.2G 2,704ft 10.4s 8s
OK Cesaroni I470 54.5oz 131ft/s 937ft/s 35.8G 2,705ft 10.0s 9s
OK AeroTech I366 56.6oz 121ft/s 836ft/s 30.2G 2,727ft 10.2s 9s
OK AeroTech I327 59.2oz 109ft/s 829ft/s 25.3G 2,743ft 10.3s 9s
OK AeroTech I364 60.9oz 105ft/s 808ft/s 23.0G 2,753ft 10.4s 9s
OK Cesaroni I255 55.2oz 97ft/s 766ft/s 19.5G 2,760ft 10.5s 9s
OK AMW I297 57.8oz 106ft/s 813ft/s 22.3G 2,775ft 10.4s 9s
OK AeroTech I435 55.3oz 151ft/s 924ft/s 48.3G 2,795ft 10.1s 9s
OK Cesaroni I303 54.6oz 108ft/s 826ft/s 26.2G 2,799ft 10.4s 9s
warningsW Loki I110 57.8oz 73ft/s 565ft/s 15.4G 2,813ft 11.4s 7s
OK AeroTech I280 58.7oz 99ft/s 811ft/s 19.7G 2,851ft 10.6s 9s
OK KBA I550 62.1oz 128ft/s 959ft/s 35.2G 2,865ft 10.5s 9s
OK Cesaroni I242 56.4oz 93ft/s 771ft/s 17.2G 2,901ft 10.8s 8s
OK AeroTech I284 56.6oz 118ft/s 846ft/s 29.4G 2,908ft 10.4s 8s
OK Cesaroni I350 64.6oz 104ft/s 852ft/s 21.4G 2,930ft 10.8s 9s
OK AeroTech I500 57.3oz 124ft/s 1,000ft/s 35.2G 2,936ft 10.3s 9s
warningsW Cesaroni I540 58.1oz 143ft/s 1,036ft/s 38.1G 2,941ft 10.2s 9s
OK AeroTech I600 58.2oz 157ft/s 1,023ft/s 49.8G 2,944ft 10.2s 9s
OK KBA I301 62.6oz 95ft/s 807ft/s 22.2G 2,973ft 10.9s 9s
OK KBA J740 62.5oz 155ft/s 1,106ft/s 51.8G 3,016ft 10.4s 10s
OK KBA J520 62.5oz 130ft/s 988ft/s 40.1G 3,031ft 10.6s 9s
OK AeroTech J350 60.5oz 149ft/s 944ft/s 48.0G 3,041ft 10.4s 9s
OK AeroTech I350 58.7oz 111ft/s 954ft/s 28.2G 3,044ft 10.6s 9s
OK AeroTech J420 59.9oz 125ft/s 941ft/s 32.6G 3,052ft 10.6s 9s
OK Loki J396 63.5oz 106ft/s 929ft/s 27.7G 3,072ft 10.8s 9s
OK AeroTech J340 57.4oz 126ft/s 921ft/s 36.7G 3,076ft 10.5s 8s
OK Cesaroni J381 61.3oz 116ft/s 933ft/s 28.8G 3,082ft 10.7s 9s
OK Cesaroni J335 59.1oz 111ft/s 905ft/s 24.1G 3,118ft 10.8s 9s
OK Cesaroni J357 58.2oz 119ft/s 941ft/s 30.8G 3,122ft 10.7s 9s
OK AeroTech J425 59.3oz 105ft/s 1,015ft/s 25.3G 3,147ft 10.7s 9s
OK Cesaroni J285 58.0oz 102ft/s 872ft/s 21.3G 3,180ft 11.0s 9s
OK AeroTech J500 60.1oz 143ft/s 1,036ft/s 46.6G 3,205ft 10.5s 9s
OK Cesaroni J400 61.8oz 113ft/s 967ft/s 26.3G 3,208ft 10.8s 9s
OK Cesaroni I125 59.8oz 80ft/s 586ft/s 15.1G 3,213ft 12.1s 8s
OK Cesaroni J270 60.1oz 93ft/s 850ft/s 16.5G 3,221ft 11.2s 9s
OK Loki J474 63.7oz 163ft/s 932ft/s 66.7G 3,222ft 10.7s 9s
OK Loki J528 63.3oz 157ft/s 1,092ft/s 57.1G 3,227ft 10.6s 9s
OK Cesaroni J316 58.4oz 109ft/s 883ft/s 25.9G 3,227ft 11.0s 9s
OK Cesaroni I216 58.2oz 96ft/s 776ft/s 20.0G 3,254ft 11.3s 8s
OK Cesaroni J290 60.3oz 107ft/s 880ft/s 22.5G 3,283ft 11.1s 9s
OK AeroTech I59 54.2oz 66ft/s 417ft/s 9.9G 3,284ft 14.1s 6s
OK AeroTech J270 59.6oz 101ft/s 884ft/s 20.6G 3,351ft 11.2s 9s
OK Loki J712 63.5oz 146ft/s 1,188ft/s 48.8G 3,367ft 10.7s 10s
OK AeroTech J435 59.0oz 145ft/s 1,067ft/s 41.1G 3,383ft 10.7s 9s
OK Cesaroni J425 61.7oz 130ft/s 1,037ft/s 38.1G 3,423ft 10.9s 9s
OK Cesaroni J410 62.9oz 118ft/s 1,016ft/s 28.2G 3,433ft 11.0s 9s
OK Loki J326 64.0oz 143ft/s 857ft/s 53.8G 3,481ft 11.3s 9s
OK Cesaroni J330 61.8oz 115ft/s 958ft/s 25.9G 3,484ft 11.2s 9s
OK Cesaroni J354 64.4oz 117ft/s 964ft/s 28.1G 3,617ft 11.3s 9s
OK Cesaroni J94 60.3oz 62ft/s 544ft/s 8.7G 3,779ft 13.9s 7s

W Motor total weight unknown, lift-off Weight not accurate.

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 Cesaroni G46 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (41ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (42ft/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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