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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 67 motors that fit and appear to have enough thrust (688 motors didn't fit, 48 motors failed safety checks). 113 motor had thrust curves available and 227 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:   Still Testing B4
Owner: Christopher Texler
Body Diameter: 2.50in
Dry Weight: 2.57lb
MMT Diameter: 29.0mm
MMT Length: 15.00in
CD: 0.25

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 2.81lb 61ft/s 130ft/s 10.6G 281ft 4.4s 4s
OK AeroTech F67 2.75lb 48ft/s 137ft/s 6.1G 342ft 5.0s 4s
OK Cesaroni G88 2.91lb 48ft/s 182ft/s 8.0G 570ft 6.4s 5s
OK AeroTech G104 2.87lb 57ft/s 187ft/s 8.5G 606ft 6.4s 6s
OK Cesaroni G83 2.89lb 50ft/s 227ft/s 6.8G 892ft 7.9s 7s
OK Cesaroni G250 2.88lb 83ft/s 265ft/s 21.8G 1,022ft 8.1s 8s
OK AeroTech G76 2.90lb 61ft/s 233ft/s 10.7G 1,027ft 8.4s 6s
OK AeroTech G64 2.90lb 53ft/s 231ft/s 7.4G 1,050ft 8.6s 6s
OK Cesaroni G126 2.89lb 61ft/s 262ft/s 11.4G 1,079ft 8.4s 7s
OK AeroTech G75 2.86lb 48ft/s 249ft/s 6.9G 1,109ft 8.8s 7s
OK AeroTech G78 2.85lb 48ft/s 260ft/s 7.1G 1,171ft 9.0s 7s
OK Cesaroni G131 3.01lb 57ft/s 275ft/s 11.0G 1,173ft 8.8s 8s
OK AeroTech G125 2.85lb 59ft/s 289ft/s 11.5G 1,274ft 9.1s 8s
OK AeroTech G80 2.85lb 50ft/s 274ft/s 7.3G 1,290ft 9.4s 8s
OK Cesaroni G106 2.98lb 51ft/s 296ft/s 8.9G 1,372ft 9.7s 8s
OK KBA G135 3.07lb 56ft/s 312ft/s 10.9G 1,454ft 9.8s 9s
OK Cesaroni G54 3.00lb 53ft/s 286ft/s 8.1G 1,689ft 11.0s 8s
OK Cesaroni G118 2.99lb 58ft/s 345ft/s 10.8G 1,784ft 10.8s 9s
OK Cesaroni G125 3.00lb 62ft/s 347ft/s 11.1G 1,789ft 10.8s 10s
OK AeroTech H165 3.02lb 70ft/s 359ft/s 13.5G 1,833ft 10.8s 10s
OK Cesaroni H133 2.99lb 63ft/s 357ft/s 13.4G 1,874ft 11.0s 10s
OK Cesaroni H175 3.12lb 66ft/s 366ft/s 16.9G 1,877ft 10.9s 10s
OK Cesaroni H87 3.02lb 51ft/s 344ft/s 8.5G 1,889ft 11.4s 9s
OK Cesaroni H90 2.93lb 55ft/s 348ft/s 10.9G 1,909ft 11.3s 9s
OK Cesaroni H163 2.98lb 68ft/s 375ft/s 15.4G 1,974ft 11.2s 10s
OK AeroTech H128 3.03lb 67ft/s 375ft/s 12.7G 2,025ft 11.4s 10s
OK Cesaroni H123 3.07lb 54ft/s 373ft/s 9.8G 2,040ft 11.5s 10s
OK AeroTech G138 2.90lb 59ft/s 386ft/s 14.3G 2,041ft 11.4s 10s
OK Cesaroni H410 2.97lb 108ft/s 401ft/s 39.1G 2,048ft 11.1s 11s
OK AeroTech H238 3.00lb 78ft/s 392ft/s 17.2G 2,103ft 11.4s 10s
OK AeroTech H115 3.02lb 55ft/s 380ft/s 8.4G 2,124ft 11.8s 10s
OK AeroTech H97 3.18lb 49ft/s 371ft/s 7.0G 2,130ft 12.0s 10s
OK Cesaroni H118 3.08lb 61ft/s 391ft/s 11.4G 2,266ft 12.0s 10s
OK KBA H130 4.13lb 57ft/s 378ft/s 11.0G 2,299ft 12.3s 10s
OK Cesaroni H237 3.22lb 80ft/s 452ft/s 20.9G 2,599ft 12.5s 12s
OK AeroTech H220 3.12lb 83ft/s 456ft/s 21.1G 2,655ft 12.6s 12s
OK Cesaroni H151 3.10lb 70ft/s 444ft/s 13.8G 2,668ft 12.8s 11s
OK AeroTech H210 3.11lb 77ft/s 464ft/s 18.2G 2,730ft 12.8s 12s
OK Cesaroni H135 3.12lb 63ft/s 456ft/s 10.9G 2,822ft 13.3s 12s
OK Cesaroni H160 3.17lb 65ft/s 468ft/s 12.5G 2,852ft 13.3s 12s
OK Cesaroni H170 3.08lb 74ft/s 470ft/s 16.3G 2,884ft 13.2s 12s
OK AeroTech H182 3.03lb 67ft/s 488ft/s 14.2G 2,959ft 13.4s 12s
OK AeroTech H180 3.13lb 76ft/s 492ft/s 17.6G 3,056ft 13.5s 12s
OK AeroTech H135 3.04lb 61ft/s 474ft/s 10.5G 3,112ft 14.0s 12s
OK AeroTech H250 3.14lb 88ft/s 513ft/s 22.3G 3,151ft 13.6s 13s
OK KBA H225 3.27lb 67ft/s 517ft/s 18.8G 3,227ft 13.9s 13s
OK Cesaroni H295 3.32lb 88ft/s 543ft/s 25.8G 3,403ft 14.1s 13s
OK AeroTech H195 3.01lb 83ft/s 539ft/s 18.0G 3,411ft 14.2s 13s
OK Cesaroni H180 3.26lb 75ft/s 531ft/s 17.6G 3,506ft 14.5s 13s
OK Cesaroni H194 3.20lb 79ft/s 544ft/s 18.8G 3,565ft 14.5s 13s
OK Cesaroni H200 3.18lb 77ft/s 555ft/s 19.6G 3,675ft 14.7s 13s
OK Cesaroni H140 3.18lb 74ft/s 540ft/s 16.3G 3,771ft 15.0s 13s
OK Cesaroni H340 3.43lb 96ft/s 603ft/s 28.1G 3,956ft 15.0s 14s
OK Cesaroni H255 3.08lb 91ft/s 607ft/s 26.4G 4,030ft 15.0s 14s
OK Cesaroni H399 3.22lb 112ft/s 628ft/s 37.1G 4,096ft 15.1s 14s
OK Cesaroni H159 3.33lb 64ft/s 599ft/s 11.7G 4,234ft 15.9s 14s
OK Cesaroni H226 3.36lb 85ft/s 618ft/s 22.4G 4,325ft 15.7s 14s
OK AeroTech H268 3.36lb 87ft/s 640ft/s 21.4G 4,412ft 15.8s 15s
OK Cesaroni H160 3.27lb 82ft/s 610ft/s 20.7G 4,525ft 16.2s 14s
OK Cesaroni H233 3.29lb 85ft/s 646ft/s 22.2G 4,536ft 16.0s 15s
OK Cesaroni H255 3.27lb 97ft/s 667ft/s 27.4G 4,665ft 16.2s 15s
OK AeroTech I200 3.36lb 82ft/s 644ft/s 19.3G 4,698ft 16.3s 15s
OK Cesaroni I204 3.34lb 85ft/s 694ft/s 23.1G 5,127ft 16.9s 15s
OK AeroTech I205 3.27lb 81ft/s 707ft/s 24.1G 5,206ft 17.0s 15s
OK Cesaroni I224 3.39lb 95ft/s 745ft/s 27.8G 5,665ft 17.5s 16s
OK Cesaroni I243 3.45lb 92ft/s 755ft/s 27.4G 5,666ft 17.6s 16s
warningsW,D Estes G80 2.85lb 6:1 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 (16ft/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 (21ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (30ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (27ft/s)
failedG Estes F15 speed at end of launch guide too slow (13ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (30ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (30ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (26ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (25ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni F59 speed at end of launch guide too slow (42ft/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 (26ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (23ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (44ft/s)
failedG Apogee F10 speed at end of launch guide too slow (17ft/s)
failedG AeroTech F50 speed at end of launch guide too slow (42ft/s)
failedG Estes F50 speed at end of launch guide too slow (45ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (36ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G74 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G53 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G80 speed at end of launch guide too slow (45ft/s)
failedG Estes G40 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (42ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (42ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (28ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (41ft/s)
failed5 AeroTech G8 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech G11 speed at end of launch guide too slow (18ft/s)
failedG AeroTech G12 speed at end of launch guide too slow (19ft/s)
failedG KBA G82 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni H54 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (42ft/s)

G These simulations were run with a launch guide length of 6ft (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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