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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 48 motors that fit and appear to have enough thrust (738 motors didn't fit, 5 motors failed safety checks). 51 motor had thrust curves available and 94 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:   Alpha III Goony BT-80
Owner: Jim Lane
Body Diameter: 2.60in
Dry Weight: 11.0oz
MMT Diameter: 29.0mm
MMT Length: 6.00in
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 E23 14.7oz 56ft/s 207ft/s 8.4G 618ft 6.2s 5s
OK Cesaroni F36 14.7oz 60ft/s 295ft/s 18.5G 773ft 6.5s 5s
OK AeroTech F37 14.9oz 52ft/s 301ft/s 10.0G 931ft 7.3s 6s
OK AeroTech F27 13.8oz 54ft/s 283ft/s 8.3G 959ft 7.4s 5s
OK Cesaroni F36 14.6oz 57ft/s 327ft/s 9.5G 974ft 7.3s 6s
OK Cesaroni F32 14.8oz 52ft/s 311ft/s 9.7G 986ft 7.5s 6s
OK AeroTech F62 14.8oz 71ft/s 356ft/s 14.5G 994ft 7.1s 6s
OK Cesaroni F120 14.7oz 102ft/s 412ft/s 33.3G 1,011ft 7.0s 6s
OK Cesaroni F29 14.7oz 48ft/s 306ft/s 7.0G 1,015ft 7.7s 6s
OK AeroTech F23 13.9oz 60ft/s 295ft/s 11.6G 1,025ft 7.5s 5s
OK Cesaroni F31 14.6oz 55ft/s 331ft/s 12.8G 1,044ft 7.5s 6s
OK Cesaroni F59 14.5oz 75ft/s 387ft/s 16.5G 1,058ft 7.3s 6s
OK AeroTech F42 13.7oz 78ft/s 360ft/s 17.1G 1,068ft 7.3s 6s
OK AeroTech F20 13.8oz 62ft/s 312ft/s 11.5G 1,120ft 7.7s 5s
OK AeroTech F26 14.6oz 55ft/s 321ft/s 8.4G 1,187ft 8.1s 5s
OK AeroTech F50 14.0oz 82ft/s 439ft/s 17.7G 1,252ft 7.6s 6s
OK AeroTech F52 15.3oz 78ft/s 422ft/s 17.6G 1,296ft 7.9s 6s
OK AeroTech F25 14.2oz 70ft/s 361ft/s 13.6G 1,338ft 8.2s 5s
warningsW Estes F50 13.9oz 79ft/s 471ft/s 18.8G 1,371ft 7.8s 6s
OK AeroTech F40 15.5oz 72ft/s 401ft/s 14.8G 1,392ft 8.2s 6s
OK AeroTech G54 15.8oz 79ft/s 448ft/s 17.3G 1,398ft 8.1s 7s
OK Cesaroni G88 16.4oz 86ft/s 518ft/s 24.7G 1,399ft 7.9s 7s
OK AeroTech G104 15.8oz 99ft/s 522ft/s 26.7G 1,422ft 7.9s 7s
OK AeroTech G74 14.1oz 82ft/s 564ft/s 21.5G 1,459ft 7.9s 7s
OK AeroTech G53 16.1oz 84ft/s 466ft/s 18.3G 1,541ft 8.4s 6s
OK AeroTech G38 15.4oz 63ft/s 412ft/s 11.3G 1,546ft 8.7s 6s
OK Cesaroni G80 16.1oz 78ft/s 562ft/s 21.1G 1,551ft 8.2s 7s
OK AeroTech G77 15.3oz 81ft/s 609ft/s 20.3G 1,630ft 8.2s 7s
OK AeroTech G77 16.8oz 71ft/s 568ft/s 17.2G 1,641ft 8.5s 7s
OK Cesaroni G250 16.0oz 135ft/s 746ft/s 62.7G 1,644ft 8.0s 8s
warningsW Estes G40 15.3oz 73ft/s 478ft/s 16.1G 1,685ft 8.6s 6s
OK AeroTech G40 15.3oz 73ft/s 478ft/s 16.1G 1,685ft 8.6s 6s
OK AeroTech G79 16.5oz 83ft/s 582ft/s 20.1G 1,693ft 8.5s 7s
OK Cesaroni G83 16.1oz 88ft/s 595ft/s 21.4G 1,703ft 8.5s 7s
OK AeroTech G79 15.4oz 69ft/s 574ft/s 17.2G 1,716ft 8.6s 7s
OK Cesaroni G68 16.5oz 73ft/s 556ft/s 19.1G 1,739ft 8.7s 7s
OK Cesaroni G126 16.1oz 104ft/s 690ft/s 34.5G 1,758ft 8.3s 7s
OK Cesaroni G57 16.1oz 79ft/s 524ft/s 18.6G 1,775ft 8.8s 7s
OK AeroTech G76 16.2oz 112ft/s 561ft/s 32.6G 1,797ft 8.5s 7s
OK AeroTech G125 15.4oz 102ft/s 762ft/s 32.0G 1,826ft 8.3s 7s
OK AeroTech G75 15.6oz 87ft/s 608ft/s 22.2G 1,848ft 8.6s 7s
OK AeroTech G78 15.4oz 87ft/s 659ft/s 22.2G 1,860ft 8.6s 7s
OK AeroTech G64 16.3oz 94ft/s 551ft/s 22.9G 1,864ft 8.8s 6s
OK AeroTech G80 15.5oz 93ft/s 668ft/s 23.1G 1,932ft 8.6s 7s
OK AeroTech G25 15.3oz 55ft/s 427ft/s 8.9G 2,060ft 10.1s 5s
OK AeroTech G138 16.2oz 100ft/s 935ft/s 32.6G 2,179ft 8.7s 8s
warningsW,D Estes F26 14.0oz 7:1 thrust/weight ratio (no data)
warningsW,D Estes G80 15.4oz 18:1 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 (45ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (48ft/s)
failedG Estes F15 speed at end of launch guide too slow (41ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (44ft/s)
failedG Apogee F10 speed at end of launch guide too slow (46ft/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.)

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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