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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 17 motors that fit and appear to have enough thrust (783 motors didn't fit, 2 motors failed safety checks). 19 motor had thrust curves available and 37 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:   Der Fiber Max
Owner: Phill Ash
Body Diameter: 4.00in
Dry Weight: 68.4oz
MMT Diameter: 54.0mm
MMT Length: 9.00in
CD: 0.85

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 Cesaroni I140 88.3oz 49ft/s 364ft/s 5.5G 1,656ft 10.1s 7s
OK AeroTech I215 87.0oz 69ft/s 421ft/s 9.8G 1,661ft 9.6s 8s
OK AeroTech I599 86.5oz 121ft/s 511ft/s 30.8G 1,668ft 9.0s 8s
OK AeroTech I170 87.0oz 57ft/s 402ft/s 7.5G 1,705ft 9.9s 8s
OK AeroTech I229 86.5oz 68ft/s 448ft/s 10.3G 1,736ft 9.7s 8s
OK Cesaroni I445 88.7oz 91ft/s 551ft/s 20.3G 1,935ft 9.6s 9s
OK Cesaroni I150 88.5oz 55ft/s 407ft/s 6.2G 1,972ft 10.8s 8s
OK Cesaroni I218 88.9oz 67ft/s 480ft/s 9.6G 2,045ft 10.4s 8s
OK Cesaroni I120 90.4oz 48ft/s 380ft/s 4.8G 2,137ft 11.7s 7s
OK Cesaroni I165 89.4oz 57ft/s 441ft/s 6.5G 2,179ft 11.1s 8s
OK AeroTech J250 93.4oz 75ft/s 583ft/s 11.8G 2,755ft 11.5s 9s
OK AeroTech I65 94.9oz 55ft/s 368ft/s 6.4G 2,826ft 13.7s 5s
OK AeroTech J315 98.4oz 75ft/s 637ft/s 12.6G 2,832ft 11.5s 9s
OK AeroTech J1299 97.8oz 154ft/s 945ft/s 53.1G 2,879ft 10.6s 10s
OK AeroTech J460 96.2oz 96ft/s 768ft/s 19.3G 3,009ft 11.3s 9s
OK AeroTech J180 96.9oz 74ft/s 550ft/s 11.1G 3,089ft 12.3s 8s
OK AeroTech J275 98.9oz 69ft/s 623ft/s 10.8G 3,113ft 12.1s 8s

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 I117 speed at end of launch guide too slow (44ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (46ft/s)

G These simulations were run with a launch guide length of 8ft (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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