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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 28 motors that fit and appear to have enough thrust (778 motors didn't fit, 5 motors failed safety checks). 33 motor had thrust curves available and 59 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:   Dragonfly MP (Scratch Built)
Owner: Michael J Zaborowski
Body Diameter: 1.66in
Dry Weight: 6.2oz
MMT Diameter: 24.0mm
MMT Length: 4.00in
CD: 0.80
Web Site:

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 Estes C11 7.5oz 55ft/s 111ft/s 9.5G 204ft 3.9s 3s
OK Estes D12 8.3oz 59ft/s 173ft/s 12.0G 495ft 5.9s 4s
OK Estes D11 7.8oz 60ft/s 186ft/s 11.0G 557ft 6.2s 4s
OK AeroTech D15 7.9oz 68ft/s 222ft/s 12.6G 633ft 6.1s 5s
OK Cesaroni E22 8.2oz 59ft/s 286ft/s 12.2G 802ft 6.7s 6s
OK Cesaroni E75 8.1oz 116ft/s 339ft/s 40.6G 817ft 6.4s 6s
OK Cesaroni E31 8.1oz 74ft/s 322ft/s 17.0G 878ft 6.8s 6s
OK Estes E12 8.3oz 66ft/s 256ft/s 13.3G 926ft 7.7s 5s
OK AeroTech E11 8.5oz 51ft/s 288ft/s 7.2G 1,112ft 8.1s 5s
OK Estes E30 7.9oz 89ft/s 408ft/s 21.3G 1,131ft 7.3s 6s
OK AeroTech E12 8.3oz 50ft/s 290ft/s 6.9G 1,174ft 8.3s 5s
OK AeroTech E20 8.0oz 76ft/s 368ft/s 14.7G 1,178ft 7.7s 6s
OK AeroTech E28 8.2oz 89ft/s 441ft/s 21.2G 1,293ft 7.7s 6s
OK AeroTech E30 7.9oz 89ft/s 451ft/s 20.9G 1,298ft 7.7s 6s
OK AeroTech E18 8.3oz 68ft/s 372ft/s 12.4G 1,298ft 8.1s 6s
OK AeroTech E15 7.9oz 67ft/s 359ft/s 12.7G 1,329ft 8.3s 6s
OK AeroTech F44 7.9oz 102ft/s 526ft/s 28.3G 1,337ft 7.6s 7s
OK AeroTech F62 9.4oz 91ft/s 522ft/s 26.0G 1,401ft 7.9s 7s
OK AeroTech F12 8.7oz 57ft/s 368ft/s 8.7G 1,426ft 8.7s 6s
warningsW Apogee E6 7.9oz 52ft/s 218ft/s 8.2G 1,458ft 10.7s 5s
OK AeroTech F30 8.7oz 74ft/s 481ft/s 14.3G 1,467ft 8.2s 7s
OK AeroTech F63 9.1oz 103ft/s 549ft/s 27.6G 1,473ft 8.0s 7s
OK Cesaroni F51 8.8oz 96ft/s 535ft/s 26.0G 1,510ft 8.1s 7s
OK AeroTech F39 8.4oz 98ft/s 521ft/s 24.6G 1,534ft 8.1s 7s
OK AeroTech F24 8.5oz 80ft/s 435ft/s 16.5G 1,536ft 8.5s 6s
OK Cesaroni F70 8.8oz 111ft/s 594ft/s 37.9G 1,557ft 8.1s 7s
OK AeroTech F35 9.2oz 91ft/s 543ft/s 21.7G 1,690ft 8.5s 7s
OK AeroTech F32 8.5oz 95ft/s 543ft/s 24.0G 1,709ft 8.6s 7s

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

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 AeroTech D7 speed at end of launch guide too slow (39ft/s)
failedG AeroTech D9 speed at end of launch guide too slow (46ft/s)
failedG Estes E9 speed at end of launch guide too slow (47ft/s)
failedG AeroTech E7 speed at end of launch guide too slow (40ft/s)
failedG AeroTech E6 speed at end of launch guide too slow (40ft/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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