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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 74 motors that fit and appear to have enough thrust (679 motors didn't fit, 38 motors failed safety checks). 110 motor had thrust curves available and 217 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 Stretch 29mm
Owner: Jim Lane
Body Diameter: 4.00in
Dry Weight: 47.0oz
MMT Diameter: 29.0mm
MMT Length: 16.00in
CD: 0.70

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 Cesaroni F120 50.7oz 66ft/s 112ft/s 9.2G 194ft 3.6s 3s
OK Cesaroni G88 52.4oz 52ft/s 153ft/s 7.0G 363ft 5.0s 4s
OK AeroTech G104 51.8oz 62ft/s 157ft/s 7.5G 382ft 5.0s 4s
OK AeroTech G74 50.1oz 51ft/s 157ft/s 5.5G 386ft 5.2s 4s
OK AeroTech G53 52.1oz 49ft/s 141ft/s 5.0G 405ft 5.5s 4s
OK Cesaroni G80 52.1oz 51ft/s 169ft/s 5.8G 435ft 5.5s 4s
OK AeroTech G77 51.3oz 50ft/s 183ft/s 5.9G 497ft 5.9s 5s
OK Cesaroni G57 52.1oz 49ft/s 167ft/s 5.1G 522ft 6.2s 4s
OK AeroTech G79 52.5oz 52ft/s 184ft/s 5.8G 523ft 6.0s 5s
OK Cesaroni G83 52.1oz 53ft/s 187ft/s 5.9G 526ft 6.0s 5s
OK Cesaroni G250 52.0oz 91ft/s 228ft/s 18.9G 576ft 5.8s 5s
OK AeroTech G76 52.2oz 66ft/s 186ft/s 9.4G 592ft 6.2s 4s
OK AeroTech G64 52.3oz 56ft/s 182ft/s 6.4G 606ft 6.4s 4s
OK Cesaroni G126 52.1oz 67ft/s 219ft/s 10.0G 607ft 6.1s 5s
OK AeroTech G75 51.6oz 53ft/s 199ft/s 6.0G 625ft 6.5s 4s
OK AeroTech G78 51.4oz 52ft/s 210ft/s 6.1G 645ft 6.5s 5s
OK Cesaroni G131 54.1oz 63ft/s 230ft/s 8.8G 653ft 6.4s 5s
OK AeroTech G125 51.4oz 65ft/s 241ft/s 9.5G 683ft 6.4s 5s
OK AeroTech G80 51.5oz 55ft/s 219ft/s 6.3G 697ft 6.7s 5s
OK Cesaroni G106 53.6oz 54ft/s 244ft/s 7.8G 737ft 6.8s 5s
OK KBA G135 55.0oz 62ft/s 261ft/s 9.2G 773ft 6.8s 6s
OK Cesaroni G54 53.8oz 56ft/s 212ft/s 7.1G 889ft 7.8s 5s
OK Cesaroni G118 53.6oz 60ft/s 280ft/s 9.5G 894ft 7.3s 6s
OK Cesaroni G125 53.9oz 67ft/s 282ft/s 9.8G 895ft 7.3s 6s
OK AeroTech H165 54.1oz 76ft/s 296ft/s 11.6G 903ft 7.2s 6s
OK Cesaroni H133 53.7oz 67ft/s 290ft/s 11.8G 924ft 7.3s 6s
OK Cesaroni H175 55.7oz 72ft/s 306ft/s 13.5G 924ft 7.2s 6s
OK Cesaroni H54 54.4oz 49ft/s 218ft/s 5.7G 933ft 8.1s 5s
OK Cesaroni H90 52.7oz 59ft/s 272ft/s 9.6G 943ft 7.6s 6s
OK Cesaroni H87 54.2oz 54ft/s 269ft/s 7.5G 946ft 7.8s 6s
OK Cesaroni H163 53.6oz 74ft/s 309ft/s 13.6G 951ft 7.3s 6s
OK Cesaroni H410 53.4oz 120ft/s 344ft/s 33.9G 955ft 7.0s 7s
OK AeroTech G138 52.2oz 65ft/s 317ft/s 11.1G 964ft 7.4s 6s
OK AeroTech H128 54.3oz 73ft/s 305ft/s 11.0G 974ft 7.5s 6s
OK Cesaroni H123 55.0oz 60ft/s 303ft/s 8.1G 990ft 7.7s 6s
OK AeroTech H238 53.9oz 86ft/s 324ft/s 14.8G 991ft 7.3s 6s
OK AeroTech H115 54.2oz 60ft/s 300ft/s 7.2G 1,015ft 7.8s 6s
OK AeroTech H97 56.8oz 53ft/s 291ft/s 5.9G 1,043ft 8.1s 6s
OK Cesaroni H118 55.2oz 66ft/s 308ft/s 10.1G 1,064ft 7.8s 6s
OK Cesaroni H237 57.4oz 84ft/s 377ft/s 16.4G 1,159ft 7.8s 7s
OK AeroTech H220 55.8oz 88ft/s 375ft/s 18.8G 1,173ft 7.8s 7s
OK Cesaroni H151 55.4oz 77ft/s 352ft/s 12.2G 1,189ft 8.0s 7s
OK AeroTech H210 55.7oz 83ft/s 380ft/s 15.5G 1,195ft 7.9s 7s
OK KBA H130 72.0oz 64ft/s 310ft/s 10.0G 1,208ft 8.5s 7s
OK Cesaroni H135 55.9oz 67ft/s 356ft/s 9.6G 1,248ft 8.3s 7s
OK Cesaroni H170 55.2oz 81ft/s 375ft/s 14.5G 1,248ft 8.1s 7s
OK Cesaroni H160 56.6oz 70ft/s 375ft/s 10.8G 1,250ft 8.2s 7s
OK AeroTech H182 54.3oz 73ft/s 391ft/s 11.5G 1,255ft 8.2s 7s
OK AeroTech H180 55.9oz 82ft/s 394ft/s 15.4G 1,295ft 8.2s 7s
OK AeroTech H250 56.0oz 101ft/s 419ft/s 19.7G 1,313ft 8.1s 7s
OK AeroTech H135 54.5oz 65ft/s 359ft/s 9.2G 1,339ft 8.6s 7s
OK KBA H225 58.1oz 76ft/s 424ft/s 15.3G 1,355ft 8.4s 7s
OK AeroTech H195 53.9oz 87ft/s 426ft/s 15.9G 1,372ft 8.3s 7s
OK Cesaroni H295 59.1oz 95ft/s 451ft/s 20.3G 1,390ft 8.3s 7s
OK Cesaroni H180 58.1oz 84ft/s 419ft/s 15.8G 1,446ft 8.6s 7s
OK Cesaroni H194 57.0oz 84ft/s 428ft/s 16.8G 1,448ft 8.5s 7s
OK Cesaroni H200 56.7oz 87ft/s 434ft/s 17.4G 1,475ft 8.6s 7s
OK Cesaroni H255 55.2oz 98ft/s 481ft/s 23.5G 1,532ft 8.5s 7s
OK Cesaroni H140 56.8oz 81ft/s 407ft/s 14.5G 1,533ft 8.9s 7s
OK Cesaroni H340 60.8oz 105ft/s 499ft/s 25.3G 1,540ft 8.5s 8s
OK Cesaroni H399 57.4oz 120ft/s 519ft/s 33.2G 1,549ft 8.5s 8s
OK Cesaroni H226 59.7oz 92ft/s 482ft/s 20.1G 1,663ft 8.9s 7s
OK Cesaroni H159 59.1oz 74ft/s 448ft/s 10.3G 1,664ft 9.3s 7s
OK AeroTech H268 59.6oz 95ft/s 507ft/s 18.8G 1,672ft 8.9s 8s
OK Cesaroni H233 58.6oz 93ft/s 501ft/s 19.9G 1,702ft 9.0s 8s
OK Cesaroni H255 58.2oz 99ft/s 522ft/s 24.5G 1,724ft 8.9s 8s
OK Cesaroni H160 58.3oz 88ft/s 452ft/s 18.5G 1,742ft 9.2s 7s
OK AeroTech I200 59.6oz 92ft/s 487ft/s 17.3G 1,768ft 9.2s 7s
OK Cesaroni I204 59.3oz 93ft/s 515ft/s 20.7G 1,866ft 9.3s 8s
OK AeroTech I205 58.1oz 86ft/s 525ft/s 21.5G 1,875ft 9.3s 7s
OK Cesaroni I224 60.1oz 104ft/s 558ft/s 25.0G 1,999ft 9.5s 8s
OK Cesaroni I243 61.1oz 99ft/s 558ft/s 24.7G 2,003ft 9.5s 8s
OK KBA J520 72.5oz 120ft/s 863ft/s 34.4G 2,784ft 10.5s 9s
warningsW,D Estes G80 51.4oz 5:1 thrust/weight ratio (no data)

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

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 Estes E16 speed at end of launch guide too slow (14ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (27ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (20ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (31ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (28ft/s)
failedG Estes F15 speed at end of launch guide too slow (9ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (33ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (32ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (28ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni F59 speed at end of launch guide too slow (44ft/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (2:1)
failedG AeroTech F26 speed at end of launch guide too slow (27ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (24ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (47ft/s)
failedG Apogee F10 speed at end of launch guide too slow (14ft/s)
failedG AeroTech F50 speed at end of launch guide too slow (45ft/s)
failedG Estes F50 speed at end of launch guide too slow (48ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (37ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (34ft/s)
failedG Estes G40 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (30ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (44ft/s)
failedG KBA G82 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (45ft/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.)

5 The 5:1 thrust-to-weight ratio check is a useful rule of thumb, but it does break down for motors with unusual thrust curves. For example, motors with a high initial thrust and a long tail-off may fail this test but still be safe for use.

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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