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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 31 motors that fit and appear to have enough thrust (780 motors didn't fit). All motors had thrust curves available and 55 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:   Fat Alpha
Owner: Jim Lane
Body Diameter: 1.64in
Dry Weight: 2.4oz
MMT Diameter: 24.0mm
MMT Length: 3.75in
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 Estes C11 3.6oz 77ft/s 242ft/s 20.8G 512ft 5.3s 4s
OK Estes D12 4.4oz 77ft/s 318ft/s 23.4G 902ft 6.8s 5s
OK Estes D11 4.0oz 76ft/s 342ft/s 22.8G 964ft 6.8s 5s
OK AeroTech D9 4.1oz 62ft/s 362ft/s 14.6G 1,005ft 7.0s 5s
OK AeroTech D15 4.1oz 98ft/s 401ft/s 25.5G 1,009ft 6.6s 5s
OK AeroTech D7 3.9oz 57ft/s 277ft/s 9.2G 1,081ft 7.6s 5s
OK Cesaroni E75 4.2oz 160ft/s 636ft/s 78.6G 1,094ft 6.4s 6s
OK Cesaroni E22 4.4oz 81ft/s 500ft/s 23.8G 1,168ft 7.0s 6s
OK Cesaroni E31 4.2oz 100ft/s 566ft/s 33.5G 1,216ft 6.9s 6s
OK Estes E12 4.5oz 84ft/s 406ft/s 25.7G 1,340ft 7.7s 5s
OK Estes E30 4.1oz 129ft/s 673ft/s 42.6G 1,391ft 6.9s 6s
OK Estes E9 4.4oz 67ft/s 393ft/s 14.5G 1,427ft 8.3s 5s
OK AeroTech E20 4.1oz 107ft/s 589ft/s 29.4G 1,501ft 7.4s 6s
OK AeroTech F44 4.1oz 134ft/s 880ft/s 54.8G 1,524ft 7.0s 6s
OK AeroTech E11 4.6oz 71ft/s 451ft/s 13.6G 1,539ft 8.1s 5s
OK AeroTech E30 4.1oz 126ft/s 720ft/s 41.8G 1,542ft 7.1s 6s
OK AeroTech E28 4.4oz 121ft/s 695ft/s 40.9G 1,565ft 7.3s 6s
OK AeroTech E12 4.5oz 69ft/s 452ft/s 13.7G 1,600ft 8.1s 5s
OK AeroTech E18 4.5oz 94ft/s 577ft/s 23.9G 1,651ft 7.8s 6s
OK AeroTech F62 5.5oz 119ft/s 832ft/s 42.9G 1,659ft 7.6s 7s
OK AeroTech E15 4.1oz 96ft/s 543ft/s 25.6G 1,692ft 7.8s 5s
OK AeroTech F63 5.3oz 133ft/s 864ft/s 48.0G 1,721ft 7.6s 7s
OK AeroTech E7 4.1oz 60ft/s 267ft/s 9.1G 1,723ft 10.1s 5s
OK AeroTech F30 4.9oz 95ft/s 731ft/s 26.4G 1,745ft 7.7s 6s
OK AeroTech F39 4.5oz 127ft/s 781ft/s 46.3G 1,776ft 7.5s 6s
OK AeroTech F12 4.8oz 78ft/s 545ft/s 16.4G 1,825ft 8.4s 5s
OK AeroTech F24 4.6oz 102ft/s 649ft/s 31.1G 1,876ft 8.0s 6s
OK AeroTech F32 4.7oz 126ft/s 784ft/s 45.0G 1,954ft 7.8s 6s
OK AeroTech F35 5.4oz 114ft/s 794ft/s 37.9G 1,983ft 8.1s 6s
warningsW Apogee E6 4.0oz 79ft/s 314ft/s 16.9G 2,173ft 10.8s 5s
OK AeroTech E6 4.2oz 60ft/s 270ft/s 9.2G 2,203ft 11.8s 5s

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.

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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