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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 70 motors that fit and appear to have enough thrust (697 motors didn't fit, 24 motors failed safety checks). 92 motor had thrust curves available and 181 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:   Stealth Jr. w_av_bay
Owner: Ron Ellis
Body Diameter: 2.60in
Dry Weight: 0.979Kg
MMT Diameter: 29.0mm
MMT Length: 11.00in
CD: 0.75

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 F42 1.055Kg 48ft/s 130ft/s 5.6G 338ft 5.0s 3s
OK Cesaroni F59 1.078Kg 49ft/s 142ft/s 5.7G 346ft 5.0s 4s
OK Cesaroni F120 1.085Kg 71ft/s 154ft/s 12.5G 350ft 4.8s 4s
OK AeroTech F50 1.064Kg 51ft/s 168ft/s 6.0G 489ft 5.8s 4s
OK AeroTech F52 1.101Kg 51ft/s 170ft/s 6.3G 511ft 6.0s 5s
warningsW Estes F50 1.063Kg 53ft/s 187ft/s 6.6G 591ft 6.4s 5s
OK AeroTech G54 1.116Kg 52ft/s 187ft/s 6.5G 598ft 6.4s 5s
OK Cesaroni G88 1.131Kg 58ft/s 212ft/s 9.5G 646ft 6.5s 6s
OK AeroTech G104 1.115Kg 67ft/s 218ft/s 10.1G 676ft 6.5s 6s
OK AeroTech G74 1.066Kg 57ft/s 223ft/s 7.7G 700ft 6.8s 6s
OK AeroTech G53 1.125Kg 54ft/s 203ft/s 6.8G 725ft 7.1s 5s
OK Cesaroni G80 1.122Kg 54ft/s 236ft/s 8.0G 773ft 7.1s 6s
warningsW Estes G40 1.102Kg 49ft/s 212ft/s 5.8G 823ft 7.6s 5s
OK AeroTech G40 1.102Kg 49ft/s 212ft/s 5.8G 823ft 7.6s 5s
OK AeroTech G77 1.144Kg 51ft/s 246ft/s 7.2G 843ft 7.5s 6s
OK AeroTech G77 1.102Kg 54ft/s 258ft/s 8.2G 887ft 7.6s 6s
OK Cesaroni G68 1.135Kg 51ft/s 250ft/s 7.3G 920ft 7.8s 6s
OK AeroTech G79 1.136Kg 57ft/s 258ft/s 7.9G 921ft 7.7s 6s
OK Cesaroni G83 1.124Kg 58ft/s 261ft/s 8.1G 928ft 7.7s 6s
OK AeroTech G79 1.103Kg 49ft/s 253ft/s 6.6G 928ft 7.9s 6s
OK Cesaroni G57 1.125Kg 54ft/s 241ft/s 7.0G 928ft 7.9s 6s
OK Cesaroni G250 1.120Kg 98ft/s 307ft/s 25.4G 1,000ft 7.6s 7s
OK AeroTech G76 1.126Kg 72ft/s 263ft/s 12.7G 1,032ft 8.0s 6s
OK Cesaroni G126 1.124Kg 72ft/s 301ft/s 13.4G 1,057ft 7.9s 7s
OK AeroTech G64 1.130Kg 63ft/s 259ft/s 8.8G 1,060ft 8.2s 6s
OK AeroTech G75 1.110Kg 58ft/s 283ft/s 8.3G 1,098ft 8.3s 6s
OK Cesaroni G131 1.179Kg 67ft/s 314ft/s 12.1G 1,125ft 8.2s 7s
OK AeroTech G78 1.104Kg 57ft/s 295ft/s 8.4G 1,134ft 8.4s 7s
OK AeroTech G125 1.104Kg 70ft/s 332ft/s 13.1G 1,191ft 8.3s 7s
OK AeroTech G80 1.107Kg 60ft/s 308ft/s 8.6G 1,219ft 8.6s 7s
OK Cesaroni G106 1.166Kg 58ft/s 336ft/s 10.5G 1,274ft 8.7s 7s
OK KBA G82 1.210Kg 52ft/s 318ft/s 7.5G 1,293ft 9.0s 7s
OK KBA G135 1.205Kg 66ft/s 354ft/s 12.4G 1,323ft 8.8s 8s
OK AeroTech G75 1.212Kg 48ft/s 320ft/s 5.8G 1,376ft 9.5s 7s
OK Cesaroni G125 1.174Kg 73ft/s 388ft/s 13.0G 1,530ft 9.3s 8s
OK Cesaroni G54 1.172Kg 63ft/s 305ft/s 9.5G 1,530ft 9.8s 7s
OK Cesaroni G118 1.167Kg 65ft/s 385ft/s 12.6G 1,532ft 9.4s 8s
OK AeroTech H165 1.181Kg 79ft/s 403ft/s 15.6G 1,542ft 9.2s 8s
OK Cesaroni H175 1.226Kg 77ft/s 412ft/s 18.4G 1,567ft 9.3s 8s
OK Cesaroni H133 1.169Kg 74ft/s 397ft/s 15.7G 1,578ft 9.4s 8s
OK Cesaroni H54 1.188Kg 54ft/s 315ft/s 7.7G 1,605ft 10.2s 7s
OK Cesaroni H90 1.142Kg 65ft/s 382ft/s 12.8G 1,618ft 9.7s 8s
OK Cesaroni H87 1.184Kg 60ft/s 376ft/s 10.1G 1,620ft 9.8s 8s
OK Cesaroni H163 1.166Kg 80ft/s 421ft/s 18.0G 1,624ft 9.4s 8s
OK Cesaroni H410 1.162Kg 126ft/s 459ft/s 45.1G 1,628ft 9.1s 9s
OK AeroTech H128 1.185Kg 78ft/s 417ft/s 14.7G 1,657ft 9.5s 8s
OK AeroTech G138 1.127Kg 70ft/s 436ft/s 15.3G 1,658ft 9.5s 8s
OK Cesaroni H123 1.207Kg 64ft/s 414ft/s 10.8G 1,683ft 9.8s 8s
OK AeroTech H238 1.175Kg 91ft/s 439ft/s 19.7G 1,684ft 9.4s 8s
OK AeroTech H115 1.184Kg 65ft/s 417ft/s 9.7G 1,729ft 9.9s 8s
OK AeroTech H97 1.257Kg 58ft/s 403ft/s 8.0G 1,763ft 10.2s 8s
OK Cesaroni H118 1.211Kg 71ft/s 424ft/s 13.3G 1,800ft 10.0s 8s
OK Cesaroni H237 1.273Kg 93ft/s 504ft/s 22.4G 1,947ft 10.0s 9s
OK AeroTech H220 1.229Kg 96ft/s 504ft/s 24.5G 1,976ft 10.0s 9s
OK Cesaroni H151 1.217Kg 82ft/s 481ft/s 16.0G 2,005ft 10.2s 9s
OK AeroTech H210 1.225Kg 90ft/s 512ft/s 20.7G 2,016ft 10.1s 9s
OK Cesaroni H135 1.230Kg 73ft/s 489ft/s 12.7G 2,099ft 10.6s 9s
OK Cesaroni H160 1.251Kg 76ft/s 509ft/s 14.1G 2,102ft 10.5s 9s
OK Cesaroni H170 1.211Kg 86ft/s 509ft/s 19.0G 2,102ft 10.4s 9s
OK AeroTech H182 1.186Kg 79ft/s 536ft/s 15.5G 2,123ft 10.4s 9s
OK AeroTech H180 1.231Kg 88ft/s 534ft/s 20.3G 2,175ft 10.5s 9s
OK AeroTech H250 1.235Kg 110ft/s 563ft/s 25.7G 2,207ft 10.4s 10s
OK Cesaroni H53 1.265Kg 49ft/s 389ft/s 6.5G 2,251ft 11.9s 8s
OK AeroTech H135 1.191Kg 72ft/s 498ft/s 12.2G 2,256ft 10.9s 9s
OK AeroTech H195 1.176Kg 97ft/s 584ft/s 21.0G 2,311ft 10.6s 9s
OK Cesaroni H194 1.263Kg 92ft/s 581ft/s 21.8G 2,421ft 10.9s 10s
OK Cesaroni H200 1.253Kg 95ft/s 590ft/s 22.6G 2,467ft 10.9s 10s
OK Cesaroni H140 1.256Kg 86ft/s 559ft/s 18.9G 2,555ft 11.3s 9s
OK Cesaroni H255 1.211Kg 106ft/s 652ft/s 30.7G 2,571ft 10.9s 10s
warningsW,D Estes G80 1.104Kg 7:1 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 (21ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (33ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (26ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (36ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (33ft/s)
failedG Estes F15 speed at end of launch guide too slow (18ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (36ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (37ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (33ft/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (3:1)
failedG AeroTech F26 speed at end of launch guide too slow (32ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (28ft/s)
failedG Apogee F10 speed at end of launch guide too slow (22ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (43ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (39ft/s)

G These simulations were run with a launch guide length of 7ft (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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