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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 35 motors that fit and appear to have enough thrust (774 motors didn't fit, 2 motors failed safety checks). 37 motor had thrust curves available and 72 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:   Dark Star Extreme
Owner: Tom Devlin
Body Diameter: 4.00in
Dry Weight: 18.00lb
MMT Diameter: 75.0mm
MMT Length: 24.00in
CD: 2.00

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 K1499 21.84lb 100ft/s 406ft/s 16.9G 1,687ft 9.8s 9s
OK Cesaroni K735 23.53lb 57ft/s 481ft/s 7.4G 2,533ft 12.3s 10s
OK Cesaroni K2000 23.43lb 108ft/s 662ft/s 22.9G 3,028ft 12.2s 11s
OK AeroTech K780 24.47lb 64ft/s 545ft/s 7.7G 3,030ft 13.2s 10s
OK Cesaroni K1085 23.36lb 74ft/s 611ft/s 10.1G 3,140ft 13.0s 11s
OK Cesaroni K555 24.08lb 51ft/s 502ft/s 4.7G 3,148ft 14.2s 10s
OK Cesaroni K661 23.57lb 58ft/s 542ft/s 6.1G 3,230ft 13.8s 10s
OK AeroTech K560 24.05lb 57ft/s 482ft/s 6.1G 3,231ft 14.0s 9s
OK AeroTech K1000 23.74lb 79ft/s 611ft/s 9.8G 3,266ft 13.2s 11s
OK Cesaroni K510 23.71lb 59ft/s 477ft/s 5.4G 3,298ft 14.4s 10s
OK Cesaroni L585 24.14lb 57ft/s 537ft/s 5.1G 3,509ft 14.6s 10s
OK Cesaroni L820 25.54lb 58ft/s 631ft/s 7.2G 3,737ft 14.6s 11s
OK Cesaroni L910 23.77lb 72ft/s 654ft/s 8.5G 3,759ft 14.2s 11s
OK Loki L780 25.72lb 54ft/s 637ft/s 6.7G 3,823ft 14.8s 11s
OK Cesaroni L3200 25.20lb 131ft/s 894ft/s 32.5G 3,978ft 13.3s 12s
OK Gorilla L789 25.45lb 59ft/s 666ft/s 6.7G 4,175ft 15.2s 11s
OK AeroTech L1150 26.10lb 79ft/s 745ft/s 10.2G 4,283ft 14.7s 12s
OK Cesaroni L645 26.27lb 55ft/s 611ft/s 5.2G 4,364ft 16.0s 11s
OK Gorilla L1150 25.72lb 75ft/s 755ft/s 13.4G 4,365ft 14.7s 12s
OK Gorilla L985 26.01lb 61ft/s 756ft/s 8.5G 4,406ft 15.3s 12s
OK Loki L930 25.80lb 70ft/s 711ft/s 8.8G 4,416ft 15.2s 11s
OK Gorilla L425 25.72lb 57ft/s 492ft/s 5.6G 4,450ft 17.0s 9s
OK Cesaroni L1720 25.37lb 95ft/s 890ft/s 16.3G 4,465ft 14.3s 12s
OK Cesaroni L995 25.92lb 79ft/s 718ft/s 9.9G 4,478ft 15.1s 11s
OK Gorilla L1112 26.00lb 79ft/s 776ft/s 10.3G 4,522ft 15.0s 11s
OK AeroTech L1520 26.05lb 90ft/s 846ft/s 13.3G 4,524ft 14.6s 12s
OK AeroTech L850 26.25lb 73ft/s 686ft/s 9.2G 4,549ft 15.3s 11s
OK AeroTech L1256 26.28lb 82ft/s 792ft/s 11.6G 4,559ft 14.9s 12s
OK Cesaroni L851 26.35lb 63ft/s 707ft/s 7.3G 4,583ft 15.7s 11s
OK Cesaroni L1050 25.60lb 75ft/s 766ft/s 9.4G 4,619ft 15.2s 12s
OK Loki L1482 25.80lb 84ft/s 888ft/s 12.7G 4,653ft 14.8s 12s
OK AeroTech L1390 26.55lb 82ft/s 836ft/s 12.9G 4,708ft 15.0s 12s
OK Cesaroni L800 25.74lb 73ft/s 677ft/s 9.4G 4,713ft 15.8s 11s
OK Loki L840 26.26lb 70ft/s 704ft/s 9.0G 4,785ft 15.7s 11s
OK Cesaroni L1350 25.87lb 87ft/s 890ft/s 12.1G 5,089ft 15.3s 12s

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 Gorilla L695 speed at end of launch guide too slow (47ft/s)
failedG Loki L480 speed at end of launch guide too slow (43ft/s)

G These simulations were run with a launch guide length of 10ft (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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