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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 126 motors that fit and appear to have enough thrust (656 motors didn't fit, 29 motors failed safety checks). 155 motor had thrust curves available and 320 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:   I Rock
Owner: Bob Evancic
Body Diameter: 5.5mm
Dry Weight: 96.0oz
MMT Diameter: 38.0mm
MMT Length: 20.00in
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 AeroTech G339 102.4oz 26m/s 35m/s 12.2G 70m 4.0s 4s
OK Contrail G123 114.0oz 17m/s 34m/s 10.2G 81m 4.5s 3s
OK Cesaroni G185 102.6oz 19m/s 37m/s 6.3G 83m 4.5s 4s
OK Contrail G100 114.0oz 16m/s 33m/s 4.8G 83m 4.6s 3s
OK Contrail H222 114.3oz 24m/s 43m/s 20.3G 112m 5.0s 4s
OK Contrail H300 117.6oz 27m/s 43m/s 20.9G 112m 5.0s 4s
OK Contrail H303 116.8oz 30m/s 47m/s 23.0G 129m 5.3s 5s
OK Loki H100 107.8oz 15m/s 49m/s 4.1G 175m 6.8s 5s
OK Contrail H246 117.1oz 27m/s 59m/s 15.3G 211m 6.8s 6s
warningsW AeroTech H283 104.7oz 24m/s 61m/s 10.5G 212m 6.9s 6s
OK AeroTech H148 106.9oz 18m/s 58m/s 5.5G 216m 7.3s 6s
OK AeroTech H130 104.4oz 21m/s 57m/s 7.9G 224m 7.3s 6s
OK Contrail H141 117.6oz 20m/s 59m/s 7.1G 234m 7.5s 6s
OK AeroTech H123 105.7oz 15m/s 55m/s 4.1G 235m 7.9s 5s
OK Loki H90 107.8oz 15m/s 55m/s 3.9G 236m 8.0s 5s
OK Cesaroni H143 108.2oz 15m/s 65m/s 4.6G 266m 8.3s 7s
OK Loki H125 108.1oz 18m/s 61m/s 5.8G 267m 8.1s 6s
OK AeroTech H669 104.9oz 39m/s 72m/s 36.9G 274m 7.6s 7s
OK Loki H144 107.9oz 20m/s 64m/s 7.3G 274m 8.1s 6s
OK AeroTech H219 105.2oz 22m/s 70m/s 9.0G 287m 8.1s 7s
OK AeroTech H242 105.3oz 20m/s 71m/s 7.2G 306m 8.5s 7s
OK Cesaroni H120 106.4oz 15m/s 68m/s 4.0G 311m 9.0s 7s
OK Loki H160 107.8oz 22m/s 71m/s 8.6G 319m 8.6s 7s
OK Cesaroni H125 106.3oz 15m/s 71m/s 4.3G 331m 9.2s 7s
OK Cesaroni H400 106.0oz 28m/s 80m/s 14.2G 353m 8.8s 8s
OK Cesaroni H152 106.5oz 17m/s 77m/s 6.2G 375m 9.6s 8s
OK AeroTech H178 107.4oz 16m/s 80m/s 6.4G 395m 9.8s 8s
OK Cesaroni H225 102.8oz 21m/s 84m/s 8.0G 408m 9.7s 9s
OK AeroTech H170 107.6oz 18m/s 88m/s 6.0G 487m 10.8s 9s
OK AeroTech I218 109.1oz 22m/s 91m/s 8.4G 495m 10.7s 9s
OK AeroTech I175 108.3oz 21m/s 90m/s 7.4G 514m 11.1s 9s
OK AeroTech I180 109.6oz 25m/s 89m/s 10.9G 515m 10.9s 9s
OK AeroTech I161 108.9oz 19m/s 90m/s 6.3G 522m 11.2s 9s
OK AeroTech I140 108.6oz 17m/s 89m/s 5.0G 530m 11.5s 9s
OK AeroTech H550 107.4oz 35m/s 100m/s 20.8G 533m 10.7s 10s
OK Cesaroni I180 109.9oz 17m/s 94m/s 6.3G 540m 11.4s 9s
OK AeroTech H550 107.1oz 35m/s 100m/s 20.9G 541m 10.8s 10s
warningsW Cesaroni H565 108.8oz 34m/s 101m/s 21.3G 545m 10.8s 10s
OK AeroTech H999 107.7oz 46m/s 104m/s 52.7G 566m 10.9s 11s
OK AeroTech I154 113.4oz 15m/s 92m/s 4.4G 600m 12.5s 9s
OK AeroTech I225 113.1oz 19m/s 100m/s 8.1G 601m 11.8s 10s
OK Cesaroni I212 112.8oz 19m/s 102m/s 7.5G 614m 12.1s 10s
OK AeroTech I245 108.9oz 27m/s 102m/s 12.8G 621m 11.8s 10s
OK AeroTech I357 108.1oz 26m/s 104m/s 11.6G 632m 11.9s 11s
OK Cesaroni I566 109.6oz 32m/s 117m/s 20.7G 724m 12.5s 12s
OK Cesaroni I195 110.7oz 20m/s 110m/s 6.7G 735m 13.2s 11s
OK Cesaroni I175 111.4oz 18m/s 111m/s 5.5G 770m 13.7s 11s
OK Cesaroni I170 109.8oz 19m/s 113m/s 6.6G 780m 13.6s 11s
OK Cesaroni I345 109.9oz 26m/s 120m/s 11.8G 806m 13.4s 12s
OK AeroTech I285 113.4oz 25m/s 119m/s 11.0G 813m 13.5s 12s
OK AeroTech I59 113.2oz 16m/s 78m/s 4.5G 819m 15.8s 7s
OK Cesaroni I236 110.1oz 21m/s 119m/s 9.2G 839m 13.9s 12s
OK Cesaroni I223 113.4oz 19m/s 122m/s 7.5G 875m 14.3s 12s
OK AeroTech I211 112.0oz 22m/s 119m/s 9.3G 879m 14.2s 12s
OK AeroTech I195 116.2oz 23m/s 120m/s 10.3G 886m 14.3s 12s
OK Cesaroni I800 112.1oz 38m/s 130m/s 29.5G 895m 13.8s 13s
OK AeroTech I305 116.5oz 25m/s 125m/s 12.0G 906m 14.2s 13s
OK AeroTech I300 111.6oz 26m/s 127m/s 14.0G 929m 14.4s 13s
warningsW Loki I110 116.8oz 16m/s 114m/s 7.1G 936m 15.4s 11s
OK AeroTech I1299 110.9oz 53m/s 136m/s 49.0G 957m 14.1s 14s
OK Loki I316 115.0oz 29m/s 135m/s 14.8G 1,049m 15.2s 14s
OK Cesaroni I287 117.3oz 22m/s 138m/s 10.1G 1,086m 15.7s 14s
OK Loki I210 115.0oz 25m/s 133m/s 12.8G 1,094m 15.7s 13s
OK Loki I405 115.2oz 36m/s 146m/s 24.1G 1,191m 16.0s 15s
OK Cesaroni I285 113.8oz 23m/s 146m/s 10.1G 1,226m 16.7s 15s
OK Cesaroni I255 114.2oz 23m/s 146m/s 9.0G 1,240m 16.8s 15s
OK Cesaroni I125 118.8oz 17m/s 133m/s 7.1G 1,264m 17.8s 13s
OK Loki I377 115.8oz 32m/s 151m/s 19.4G 1,289m 16.7s 15s
OK Loki I430 115.0oz 28m/s 154m/s 15.6G 1,302m 16.9s 16s
OK AMW I297 116.8oz 23m/s 152m/s 10.5G 1,332m 17.3s 15s
OK AeroTech I327 118.2oz 26m/s 153m/s 12.2G 1,335m 17.2s 16s
OK AeroTech I364 119.9oz 25m/s 154m/s 11.9G 1,354m 17.3s 16s
OK AeroTech I366 115.6oz 29m/s 156m/s 14.2G 1,365m 17.3s 16s
OK Cesaroni I242 115.4oz 21m/s 153m/s 7.9G 1,374m 17.8s 15s
OK Cesaroni I303 113.6oz 25m/s 156m/s 12.1G 1,389m 17.6s 16s
OK AeroTech I280 117.7oz 23m/s 156m/s 9.4G 1,403m 17.8s 16s
OK Cesaroni I470 113.5oz 31m/s 162m/s 16.7G 1,434m 17.6s 17s
OK KBA I301 121.6oz 23m/s 159m/s 11.0G 1,457m 18.1s 16s
OK Cesaroni I350 123.6oz 25m/s 164m/s 11.2G 1,517m 18.4s 17s
OK KBA I550 121.1oz 30m/s 169m/s 19.2G 1,543m 18.2s 17s
OK AeroTech I435 114.3oz 35m/s 170m/s 22.8G 1,597m 18.5s 17s
OK AeroTech I284 115.6oz 28m/s 168m/s 14.3G 1,621m 18.9s 17s
OK Cesaroni I216 117.2oz 22m/s 170m/s 9.4G 1,765m 20.2s 17s
OK Loki J396 122.5oz 26m/s 182m/s 15.7G 1,824m 20.0s 18s
OK KBA J520 121.5oz 30m/s 184m/s 20.1G 1,836m 19.9s 19s
OK AeroTech I500 116.3oz 30m/s 184m/s 17.5G 1,850m 20.0s 19s
OK Cesaroni J270 119.1oz 22m/s 180m/s 8.6G 1,872m 20.7s 18s
OK Cesaroni J335 118.1oz 26m/s 183m/s 11.6G 1,891m 20.5s 18s
OK Cesaroni J316 117.4oz 26m/s 182m/s 12.4G 1,902m 20.6s 18s
OK Cesaroni J285 117.0oz 24m/s 182m/s 10.7G 1,906m 20.7s 18s
OK AeroTech J420 118.9oz 30m/s 186m/s 16.0G 1,920m 20.5s 19s
warningsW Cesaroni I540 117.1oz 33m/s 189m/s 19.0G 1,923m 20.3s 19s
OK AeroTech I350 117.7oz 27m/s 187m/s 14.3G 1,929m 20.6s 19s
OK Cesaroni J381 120.3oz 28m/s 186m/s 14.1G 1,930m 20.6s 19s
OK AeroTech I600 117.2oz 36m/s 189m/s 24.2G 1,941m 20.4s 19s
OK AeroTech J350 119.5oz 35m/s 188m/s 23.8G 1,967m 20.6s 19s
OK KBA J740 121.5oz 38m/s 193m/s 29.4G 1,975m 20.4s 20s
OK AeroTech J340 116.4oz 29m/s 187m/s 17.6G 1,984m 20.8s 19s
OK Cesaroni J357 117.2oz 27m/s 189m/s 14.8G 2,003m 21.0s 19s
OK AeroTech J520 122.7oz 38m/s 192m/s 25.3G 2,036m 20.9s 19s
OK Cesaroni J290 119.3oz 24m/s 190m/s 10.8G 2,069m 21.6s 19s
OK AeroTech J425 118.3oz 27m/s 197m/s 14.3G 2,131m 21.6s 20s
OK Loki J474 122.7oz 38m/s 197m/s 34.0G 2,166m 21.5s 20s
OK Cesaroni J400 120.8oz 28m/s 198m/s 14.0G 2,174m 21.8s 20s
OK AeroTech J270 118.6oz 24m/s 194m/s 10.2G 2,188m 22.2s 20s
OK Loki J326 123.0oz 31m/s 198m/s 27.5G 2,291m 22.5s 20s
OK AeroTech J500 119.1oz 35m/s 210m/s 22.9G 2,407m 22.7s 21s
OK Loki J528 122.3oz 37m/s 213m/s 29.0G 2,449m 22.8s 22s
OK Cesaroni J330 120.8oz 27m/s 212m/s 12.7G 2,555m 23.8s 22s
OK Cesaroni J410 121.9oz 29m/s 218m/s 14.1G 2,627m 24.0s 22s
OK AeroTech J575 128.2oz 38m/s 221m/s 24.3G 2,641m 23.7s 22s
OK Cesaroni J425 120.7oz 30m/s 221m/s 19.0G 2,728m 24.3s 22s
OK AeroTech J435 118.0oz 34m/s 224m/s 20.0G 2,759m 24.4s 23s
OK Loki J712 122.5oz 37m/s 230m/s 24.8G 2,820m 24.4s 23s
OK Cesaroni J354 123.4oz 28m/s 224m/s 14.2G 2,837m 25.0s 23s
OK Cesaroni J520 126.0oz 32m/s 235m/s 18.0G 3,023m 25.6s 24s
OK Cesaroni J150 129.5oz 19m/s 211m/s 8.0G 3,104m 27.7s 21s
OK Cesaroni J580 132.8oz 31m/s 240m/s 19.9G 3,115m 25.9s 24s
OK Cesaroni J394 129.1oz 26m/s 261m/s 14.4G 3,793m 28.9s 26s
OK AeroTech J825 126.9oz 43m/s 274m/s 32.4G 3,943m 28.8s 28s
OK Cesaroni J595 126.5oz 35m/s 275m/s 24.9G 4,091m 29.6s 28s
OK Cesaroni J420 126.8oz 33m/s 269m/s 21.2G 4,093m 29.8s 27s
OK Cesaroni J453 130.0oz 31m/s 272m/s 19.1G 4,103m 29.8s 27s
OK Cesaroni J600 128.0oz 33m/s 278m/s 21.3G 4,146m 29.8s 28s
OK AeroTech J570 127.8oz 42m/s 279m/s 31.4G 4,307m 30.3s 28s
OK Cesaroni J530 130.5oz 36m/s 301m/s 21.2G 4,929m 32.5s 30s

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 (43m)
failedG AeroTech G67 speed at end of launch guide too slow (11m/s)
failedG Loki G69 speed at end of launch guide too slow (12m/s)
failedG AeroTech G61 speed at end of launch guide too slow (10m/s)
failedA Contrail G234 rocket doesn't reach a safe altitude (61m)
failedG Loki G70 speed at end of launch guide too slow (12m/s)
failedG Loki G94 speed at end of launch guide too slow (14m/s)
failedG Cesaroni G69 speed at end of launch guide too slow (10m/s)
failedG Loki G80 speed at end of launch guide too slow (13m/s)
failedG Cesaroni G46 speed at end of launch guide too slow (8m/s)
failedG Cesaroni G79 speed at end of launch guide too slow (11m/s)
failedG Loki G66 speed at end of launch guide too slow (13m/s)
failedG Cesaroni G60 speed at end of launch guide too slow (11m/s)
failedG AeroTech G69 speed at end of launch guide too slow (10m/s)
failedG Cesaroni G58 speed at end of launch guide too slow (8m/s)
failedG Cesaroni G115 speed at end of launch guide too slow (14m/s)
failedG Cesaroni G78 speed at end of launch guide too slow (11m/s)
failedG Cesaroni G50 speed at end of launch guide too slow (7m/s)
failedA Contrail G300 rocket doesn't reach a safe altitude (46m)
failedG AeroTech H73 speed at end of launch guide too slow (10m/s)
failedG AeroTech H100 speed at end of launch guide too slow (14m/s)
failedG Cesaroni H123 speed at end of launch guide too slow (14m/s)
failedG AeroTech H112 speed at end of launch guide too slow (12m/s)
failedG Cesaroni H110 speed at end of launch guide too slow (13m/s)
failedG Cesaroni H100 speed at end of launch guide too slow (13m/s)
failedG AeroTech H45 speed at end of launch guide too slow (10m/s)
failedG AeroTech I49 speed at end of launch guide too slow (8m/s)
failedG Cesaroni I55 speed at end of launch guide too slow (8m/s)
failedG Cesaroni J94 speed at end of launch guide too slow (14m/s)

G These simulations were run with a launch guide length of 3m (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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