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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 128 motors that fit and appear to have enough thrust (631 motors didn't fit, 32 motors failed safety checks). 160 motor had thrust curves available and 330 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:   IROC
Owner: Adrian Butler
Body Diameter: 5.50in
Dry Weight: 5.13lb
MMT Diameter: 38.0mm
MMT Length: 26.00in
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 Contrail G234 6.33lb 93ft/s 118ft/s 18.3G 235ft 3.9s 3s
OK AeroTech G339 5.53lb 85ft/s 135ft/s 14.3G 268ft 4.2s 4s
OK Contrail G123 6.26lb 56ft/s 127ft/s 11.8G 310ft 4.7s 4s
OK Cesaroni G185 5.55lb 58ft/s 143ft/s 7.3G 315ft 4.6s 4s
OK Contrail G100 6.26lb 52ft/s 123ft/s 5.6G 319ft 4.8s 3s
OK Contrail H300 6.48lb 91ft/s 159ft/s 23.8G 396ft 5.0s 4s
OK Contrail H222 6.28lb 80ft/s 158ft/s 23.3G 398ft 5.0s 4s
OK Contrail H303 6.43lb 100ft/s 171ft/s 26.2G 442ft 5.2s 5s
OK Contrail H211 6.45lb 88ft/s 194ft/s 21.0G 587ft 6.0s 5s
OK Contrail H121 6.48lb 54ft/s 188ft/s 8.2G 644ft 6.7s 5s
warningsW AeroTech H283 5.67lb 79ft/s 225ft/s 12.2G 650ft 6.3s 6s
OK Contrail H246 6.45lb 87ft/s 214ft/s 17.6G 655ft 6.3s 5s
OK AeroTech H148 5.81lb 57ft/s 209ft/s 6.5G 679ft 6.8s 5s
OK AeroTech H130 5.65lb 66ft/s 204ft/s 9.3G 694ft 6.7s 5s
OK Contrail H141 6.48lb 64ft/s 212ft/s 8.2G 724ft 6.9s 5s
OK AeroTech H123 5.74lb 48ft/s 198ft/s 4.8G 739ft 7.3s 5s
OK AeroTech H669 5.69lb 122ft/s 269ft/s 42.8G 762ft 6.5s 6s
OK Loki H125 5.88lb 58ft/s 217ft/s 6.8G 797ft 7.3s 5s
OK Loki H144 5.87lb 64ft/s 228ft/s 8.5G 801ft 7.1s 6s
OK AeroTech H219 5.71lb 70ft/s 255ft/s 10.5G 815ft 7.0s 6s
OK AeroTech H242 5.71lb 64ft/s 255ft/s 8.3G 855ft 7.3s 6s
OK Loki H160 5.87lb 71ft/s 249ft/s 10.1G 882ft 7.3s 6s
OK Cesaroni H120 5.78lb 48ft/s 241ft/s 4.7G 896ft 7.9s 6s
OK Cesaroni H400 5.76lb 85ft/s 298ft/s 16.2G 912ft 7.2s 7s
OK Cesaroni H152 5.79lb 53ft/s 270ft/s 7.2G 995ft 8.0s 6s
OK Cesaroni H225 5.56lb 67ft/s 303ft/s 9.4G 1,016ft 7.7s 7s
OK AeroTech H178 5.84lb 53ft/s 286ft/s 7.2G 1,017ft 8.0s 6s
OK AeroTech I218 5.95lb 70ft/s 317ft/s 9.8G 1,158ft 8.3s 7s
OK AeroTech H550 5.84lb 110ft/s 363ft/s 23.9G 1,162ft 7.9s 7s
OK AeroTech H550 5.83lb 111ft/s 366ft/s 24.1G 1,165ft 7.9s 7s
OK AeroTech H170 5.86lb 56ft/s 303ft/s 6.8G 1,165ft 8.5s 6s
warningsW Cesaroni H565 5.93lb 104ft/s 370ft/s 22.6G 1,178ft 7.9s 7s
OK AeroTech H999 5.86lb 145ft/s 385ft/s 60.7G 1,189ft 7.8s 7s
OK AeroTech I180 5.98lb 79ft/s 299ft/s 12.6G 1,195ft 8.3s 6s
OK AeroTech I161 5.94lb 59ft/s 302ft/s 7.2G 1,219ft 8.7s 6s
OK Cesaroni I180 6.00lb 55ft/s 325ft/s 6.7G 1,238ft 8.7s 7s
OK AeroTech I140 5.91lb 53ft/s 293ft/s 5.8G 1,250ft 9.0s 6s
OK AeroTech I225 6.20lb 61ft/s 340ft/s 8.9G 1,304ft 8.8s 7s
OK AeroTech I245 5.93lb 84ft/s 346ft/s 14.6G 1,305ft 8.5s 7s
OK AeroTech I357 5.89lb 81ft/s 361ft/s 13.5G 1,313ft 8.5s 7s
OK Cesaroni I212 6.18lb 58ft/s 350ft/s 8.0G 1,325ft 8.9s 7s
OK Cesaroni I566 5.98lb 100ft/s 423ft/s 22.1G 1,380ft 8.4s 8s
OK AeroTech I154 6.21lb 48ft/s 297ft/s 5.1G 1,387ft 9.7s 6s
OK Cesaroni I195 6.05lb 60ft/s 365ft/s 7.8G 1,478ft 9.3s 7s
OK Cesaroni I345 6.00lb 82ft/s 419ft/s 13.6G 1,496ft 8.9s 8s
OK AeroTech I285 6.22lb 77ft/s 403ft/s 12.6G 1,524ft 9.1s 8s
OK Cesaroni I170 5.99lb 59ft/s 374ft/s 7.4G 1,525ft 9.5s 7s
OK Cesaroni I800 6.14lb 120ft/s 474ft/s 30.6G 1,532ft 8.7s 8s
OK Cesaroni I175 6.09lb 54ft/s 365ft/s 6.0G 1,534ft 9.6s 7s
OK Cesaroni I236 6.01lb 67ft/s 396ft/s 10.6G 1,561ft 9.4s 8s
OK AeroTech I1299 6.06lb 162ft/s 497ft/s 55.1G 1,564ft 8.6s 8s
OK AeroTech I305 6.41lb 78ft/s 415ft/s 13.3G 1,605ft 9.2s 8s
OK Cesaroni I223 6.22lb 62ft/s 403ft/s 8.2G 1,610ft 9.5s 8s
OK AeroTech I211 6.13lb 70ft/s 385ft/s 10.7G 1,612ft 9.5s 7s
OK AeroTech I300 6.10lb 83ft/s 423ft/s 16.2G 1,626ft 9.2s 8s
OK AeroTech I195 6.39lb 73ft/s 384ft/s 11.7G 1,630ft 9.5s 7s
OK Loki I316 6.32lb 93ft/s 440ft/s 16.8G 1,734ft 9.4s 8s
OK Cesaroni I287 6.46lb 69ft/s 455ft/s 10.6G 1,779ft 9.8s 8s
warningsW Loki I110 6.43lb 50ft/s 342ft/s 8.2G 1,789ft 10.6s 7s
OK Loki I405 6.33lb 112ft/s 481ft/s 27.5G 1,813ft 9.4s 8s
OK Loki I210 6.32lb 82ft/s 414ft/s 14.7G 1,818ft 9.8s 8s
OK AeroTech I59 6.20lb 49ft/s 227ft/s 5.1G 1,858ft 12.6s 4s
OK Cesaroni I285 6.25lb 74ft/s 468ft/s 11.7G 1,881ft 10.0s 8s
OK Loki I430 6.32lb 91ft/s 521ft/s 17.9G 1,906ft 9.7s 9s
OK Loki I377 6.36lb 100ft/s 486ft/s 22.2G 1,907ft 9.7s 8s
OK Cesaroni I255 6.27lb 70ft/s 463ft/s 10.3G 1,911ft 10.1s 8s
OK AeroTech I366 6.35lb 90ft/s 505ft/s 16.3G 1,949ft 9.9s 8s
OK AeroTech I327 6.51lb 80ft/s 498ft/s 13.9G 1,950ft 10.0s 8s
OK AMW I297 6.43lb 74ft/s 491ft/s 12.1G 1,961ft 10.0s 8s
OK Cesaroni I470 6.22lb 99ft/s 547ft/s 19.1G 1,961ft 9.7s 9s
OK AeroTech I364 6.62lb 77ft/s 494ft/s 12.9G 1,964ft 10.0s 8s
OK Cesaroni I303 6.23lb 79ft/s 496ft/s 13.9G 1,987ft 10.1s 8s
OK KBA I550 6.70lb 97ft/s 610ft/s 21.6G 2,017ft 9.6s 9s
OK AeroTech I280 6.49lb 74ft/s 495ft/s 10.7G 2,021ft 10.3s 8s
OK Cesaroni I242 6.34lb 65ft/s 475ft/s 9.1G 2,028ft 10.4s 8s
OK KBA I301 6.73lb 73ft/s 525ft/s 12.7G 2,050ft 10.1s 8s
OK AeroTech I435 6.27lb 110ft/s 553ft/s 26.1G 2,057ft 9.8s 9s
OK Cesaroni I350 6.85lb 78ft/s 528ft/s 12.1G 2,102ft 10.3s 9s
OK AeroTech I284 6.35lb 88ft/s 522ft/s 16.1G 2,118ft 10.2s 8s
OK Cesaroni I125 6.56lb 57ft/s 369ft/s 8.2G 2,120ft 11.4s 7s
OK AeroTech I500 6.40lb 96ft/s 599ft/s 19.2G 2,199ft 10.1s 9s
warningsW Cesaroni I540 6.45lb 105ft/s 622ft/s 21.0G 2,222ft 10.1s 9s
OK AeroTech I600 6.46lb 119ft/s 618ft/s 27.6G 2,229ft 10.1s 9s
OK Loki J396 6.79lb 80ft/s 577ft/s 16.5G 2,258ft 10.4s 9s
OK KBA J740 6.73lb 119ft/s 661ft/s 29.8G 2,267ft 10.1s 9s
OK AeroTech I350 6.49lb 83ft/s 591ft/s 15.7G 2,272ft 10.4s 9s
OK AeroTech J420 6.56lb 93ft/s 586ft/s 18.1G 2,273ft 10.4s 9s
OK AeroTech J350 6.60lb 108ft/s 589ft/s 27.1G 2,286ft 10.3s 9s
OK Cesaroni J381 6.65lb 89ft/s 581ft/s 16.1G 2,295ft 10.5s 9s
OK Cesaroni J335 6.51lb 82ft/s 565ft/s 13.2G 2,296ft 10.6s 9s
OK AeroTech J340 6.40lb 94ft/s 575ft/s 20.1G 2,305ft 10.4s 8s
OK Cesaroni I216 6.45lb 69ft/s 494ft/s 10.8G 2,319ft 11.0s 8s
OK Cesaroni J285 6.44lb 77ft/s 548ft/s 11.6G 2,325ft 10.8s 9s
OK Cesaroni J357 6.45lb 88ft/s 586ft/s 16.9G 2,327ft 10.5s 9s
OK Cesaroni J270 6.57lb 67ft/s 539ft/s 9.1G 2,339ft 10.9s 8s
OK Cesaroni J316 6.47lb 80ft/s 555ft/s 14.2G 2,342ft 10.7s 9s
OK AeroTech J425 6.52lb 82ft/s 627ft/s 14.2G 2,371ft 10.6s 9s
OK Cesaroni J400 6.68lb 87ft/s 610ft/s 14.8G 2,414ft 10.6s 9s
OK AeroTech J520 6.83lb 122ft/s 629ft/s 32.6G 2,418ft 10.4s 9s
OK Cesaroni J290 6.58lb 77ft/s 560ft/s 12.4G 2,423ft 11.0s 9s
OK AeroTech J500 6.57lb 109ft/s 652ft/s 26.1G 2,465ft 10.5s 9s
OK AeroTech J270 6.55lb 76ft/s 562ft/s 11.3G 2,484ft 11.1s 9s
OK Loki J528 6.77lb 114ft/s 680ft/s 32.9G 2,486ft 10.4s 9s
OK AeroTech J575 7.15lb 113ft/s 693ft/s 26.5G 2,547ft 10.5s 9s
OK AeroTech J435 6.51lb 107ft/s 674ft/s 22.8G 2,620ft 10.8s 9s
OK Cesaroni J410 6.75lb 89ft/s 653ft/s 16.0G 2,624ft 11.0s 9s
OK Loki J712 6.79lb 117ft/s 739ft/s 28.1G 2,625ft 10.7s 9s
OK Cesaroni J330 6.68lb 87ft/s 620ft/s 14.5G 2,631ft 11.1s 9s
OK Cesaroni J425 6.67lb 96ft/s 664ft/s 21.6G 2,639ft 10.9s 9s
OK Cesaroni J520 7.00lb 95ft/s 718ft/s 20.0G 2,741ft 11.0s 9s
OK Cesaroni J354 6.85lb 85ft/s 632ft/s 16.1G 2,761ft 11.3s 9s
OK Loki J320 6.79lb 86ft/s 623ft/s 16.5G 2,763ft 11.4s 9s
OK Cesaroni J580 7.43lb 96ft/s 735ft/s 19.3G 2,818ft 11.2s 10s
OK Loki J650 7.65lb 102ft/s 762ft/s 23.0G 2,909ft 11.2s 10s
OK AeroTech J825 7.06lb 126ft/s 859ft/s 36.5G 2,940ft 10.9s 10s
OK Cesaroni J595 7.04lb 108ft/s 792ft/s 28.1G 3,055ft 11.3s 10s
OK Cesaroni J600 7.13lb 108ft/s 820ft/s 21.9G 3,067ft 11.3s 10s
OK Cesaroni J394 7.20lb 81ft/s 726ft/s 12.9G 3,112ft 11.8s 9s
OK AeroTech J570 7.12lb 127ft/s 765ft/s 35.4G 3,162ft 11.4s 9s
OK Cesaroni J453 7.26lb 97ft/s 747ft/s 21.5G 3,171ft 11.7s 9s
OK Cesaroni J420 7.06lb 102ft/s 740ft/s 24.0G 3,186ft 11.7s 9s
OK Cesaroni J530 7.28lb 111ft/s 823ft/s 23.9G 3,344ft 11.7s 10s
OK Cesaroni J150 7.23lb 60ft/s 482ft/s 9.1G 3,357ft 13.8s 7s
OK Loki J1000 7.65lb 136ft/s 979ft/s 40.2G 3,413ft 11.5s 10s
OK AeroTech J510 7.51lb 113ft/s 820ft/s 30.1G 3,464ft 11.8s 9s
OK Loki J1026 7.71lb 134ft/s 1,016ft/s 33.8G 3,507ft 11.6s 10s
OK Loki K1127 7.71lb 141ft/s 1,002ft/s 39.0G 3,520ft 11.6s 10s
OK Loki K627 7.85lb 115ft/s 971ft/s 27.4G 4,120ft 12.5s 10s

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
failedA Contrail G130 rocket doesn't reach a safe altitude (172ft)
failedG AeroTech G67 speed at end of launch guide too slow (37ft/s)
failedG Loki G69 speed at end of launch guide too slow (38ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (34ft/s)
failedG Loki G70 speed at end of launch guide too slow (39ft/s)
failedG Loki G94 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (33ft/s)
failedG Loki G80 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (34ft/s)
failedG Loki G66 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (34ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (25ft/s)
failedA Contrail G300 rocket doesn't reach a safe altitude (178ft)
failedG AeroTech H73 speed at end of launch guide too slow (32ft/s)
failedG Loki H100 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (45ft/s)
failedG Loki H90 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (47ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (42ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (34ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (25ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (44ft/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.)

A The minimum altitude check is used to ensure that the rocket flies high enough to ensure time for a safe recovery. In addition, many barometric altimeters require a minimum altitude to detect lift-off. (The minimum altitude is 10m or 33ft for an A motor and doubles for each impulse class).

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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