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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 54 motors that fit and appear to have enough thrust (717 motors didn't fit, 20 motors failed safety checks). 72 motor had thrust curves available and 139 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:   Strong Arm
Owner: lowpuller
Body Diameter: 2.60in
Dry Weight: 24.6oz
MMT Diameter: 29.0mm
MMT Length: 8.00in
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 F62 28.4oz 51ft/s 186ft/s 7.1G 528ft 5.9s 5s
OK Cesaroni F120 28.3oz 76ft/s 213ft/s 17.3G 579ft 6.0s 5s
OK AeroTech F42 27.3oz 53ft/s 188ft/s 8.1G 585ft 6.3s 5s
OK Cesaroni F59 28.1oz 53ft/s 202ft/s 8.0G 589ft 6.2s 5s
OK AeroTech F50 27.6oz 57ft/s 238ft/s 8.5G 798ft 7.1s 6s
OK AeroTech F25 27.8oz 48ft/s 202ft/s 6.5G 800ft 7.5s 5s
OK AeroTech F52 28.9oz 59ft/s 238ft/s 8.9G 824ft 7.3s 6s
OK AeroTech F40 29.1oz 51ft/s 232ft/s 7.4G 889ft 7.7s 6s
warningsW Estes F50 27.5oz 57ft/s 264ft/s 9.3G 938ft 7.6s 6s
OK AeroTech G54 29.4oz 55ft/s 260ft/s 9.0G 939ft 7.7s 6s
OK Cesaroni G88 30.0oz 60ft/s 291ft/s 13.0G 988ft 7.7s 7s
OK AeroTech G104 29.4oz 73ft/s 298ft/s 13.9G 1,023ft 7.7s 7s
OK AeroTech G74 27.7oz 61ft/s 310ft/s 10.8G 1,076ft 8.0s 7s
OK AeroTech G53 29.7oz 61ft/s 280ft/s 9.5G 1,104ft 8.3s 6s
OK Cesaroni G80 29.7oz 57ft/s 323ft/s 11.0G 1,156ft 8.3s 7s
warningsW Estes G40 28.9oz 53ft/s 294ft/s 8.1G 1,245ft 8.8s 6s
OK AeroTech G40 28.9oz 53ft/s 294ft/s 8.1G 1,245ft 8.8s 6s
OK AeroTech G77 30.4oz 53ft/s 335ft/s 9.8G 1,246ft 8.7s 7s
OK AeroTech G77 28.9oz 58ft/s 355ft/s 11.3G 1,301ft 8.7s 7s
OK AeroTech G79 30.1oz 62ft/s 350ft/s 10.8G 1,335ft 8.8s 7s
OK Cesaroni G83 29.7oz 63ft/s 355ft/s 11.1G 1,346ft 8.8s 7s
OK Cesaroni G68 30.1oz 55ft/s 341ft/s 10.0G 1,347ft 9.0s 7s
OK AeroTech G79 29.0oz 53ft/s 348ft/s 9.1G 1,361ft 9.0s 7s
OK Cesaroni G57 29.7oz 58ft/s 328ft/s 9.7G 1,364ft 9.1s 7s
OK Cesaroni G250 29.6oz 101ft/s 415ft/s 34.3G 1,402ft 8.6s 8s
OK AeroTech G76 29.8oz 79ft/s 353ft/s 17.2G 1,465ft 9.0s 7s
OK Cesaroni G126 29.7oz 79ft/s 407ft/s 18.2G 1,484ft 8.9s 8s
OK AeroTech G64 29.9oz 68ft/s 349ft/s 12.0G 1,508ft 9.3s 7s
OK AeroTech G75 29.2oz 61ft/s 383ft/s 11.4G 1,550ft 9.3s 7s
OK Cesaroni G131 31.7oz 73ft/s 419ft/s 15.9G 1,554ft 9.2s 8s
OK AeroTech G78 29.0oz 62ft/s 401ft/s 11.6G 1,588ft 9.4s 8s
OK AeroTech G125 29.0oz 76ft/s 450ft/s 17.7G 1,635ft 9.2s 8s
OK AeroTech G80 29.1oz 65ft/s 417ft/s 11.9G 1,685ft 9.6s 8s
OK Cesaroni G106 31.2oz 61ft/s 449ft/s 14.1G 1,738ft 9.7s 8s
OK KBA G82 32.7oz 55ft/s 421ft/s 9.9G 1,769ft 10.0s 8s
OK KBA G135 32.6oz 67ft/s 468ft/s 16.4G 1,783ft 9.7s 9s
OK AeroTech G75 32.8oz 52ft/s 423ft/s 7.8G 1,876ft 10.4s 8s
OK Cesaroni G125 31.5oz 77ft/s 512ft/s 17.5G 2,010ft 10.1s 9s
OK AeroTech H165 31.7oz 84ft/s 532ft/s 20.8G 2,011ft 10.0s 9s
OK Cesaroni G118 31.2oz 71ft/s 509ft/s 17.0G 2,019ft 10.2s 9s
OK Cesaroni G54 31.4oz 67ft/s 401ft/s 12.9G 2,062ft 10.7s 8s
OK Cesaroni H133 31.3oz 78ft/s 524ft/s 21.0G 2,062ft 10.2s 9s
OK Cesaroni H410 31.0oz 134ft/s 609ft/s 60.1G 2,080ft 9.8s 9s
OK Cesaroni H163 31.2oz 83ft/s 556ft/s 24.1G 2,102ft 10.2s 9s
OK Cesaroni H90 30.3oz 72ft/s 503ft/s 17.4G 2,124ft 10.4s 9s
OK Cesaroni H87 31.8oz 65ft/s 494ft/s 13.5G 2,134ft 10.6s 9s
OK AeroTech H128 31.9oz 82ft/s 547ft/s 19.7G 2,138ft 10.3s 9s
OK AeroTech G138 29.8oz 76ft/s 582ft/s 20.2G 2,142ft 10.2s 9s
OK Cesaroni H54 32.0oz 60ft/s 414ft/s 10.4G 2,154ft 11.1s 8s
OK AeroTech H238 31.5oz 98ft/s 577ft/s 26.2G 2,156ft 10.1s 9s
OK AeroTech H115 31.8oz 67ft/s 547ft/s 13.0G 2,227ft 10.6s 9s
OK AeroTech H182 31.9oz 80ft/s 700ft/s 20.6G 2,616ft 10.9s 10s
OK AeroTech H195 31.5oz 103ft/s 757ft/s 28.0G 2,793ft 11.0s 10s
warningsW,D Estes G80 29.0oz 10:1 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 (27ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (38ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (31ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (39ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (37ft/s)
failedG Estes F15 speed at end of launch guide too slow (25ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (40ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (37ft/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (4:1)
failedG AeroTech F26 speed at end of launch guide too slow (37ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (31ft/s)
failedG Apogee F10 speed at end of launch guide too slow (28ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (36ft/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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