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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 62 motors that fit and appear to have enough thrust (723 motors didn't fit, 6 motors failed safety checks). 68 motor had thrust curves available and 126 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:   Darkstar Extreme
Owner: Karl Tyrrell
Body Diameter: 4.06in
Dry Weight: 223.0oz
MMT Diameter: 75.0mm
MMT Length: 30.00in
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 K1499 284.4oz 84ft/s 519ft/s 21.1G 3,091ft 13.4s 13s
OK Cesaroni K735 311.5oz 50ft/s 645ft/s 9.6G 4,760ft 17.0s 14s
OK AeroTech K780 326.5oz 52ft/s 734ft/s 9.8G 5,757ft 18.4s 15s
OK Cesaroni K2000 309.9oz 89ft/s 853ft/s 28.8G 5,942ft 17.6s 16s
OK Cesaroni K1085 308.7oz 63ft/s 821ft/s 13.1G 6,117ft 18.3s 16s
OK AeroTech K560 319.8oz 48ft/s 691ft/s 7.9G 6,123ft 19.2s 14s
OK Cesaroni K661 312.2oz 49ft/s 755ft/s 7.9G 6,197ft 19.2s 15s
OK Cesaroni K510 314.4oz 50ft/s 695ft/s 6.8G 6,255ft 19.7s 15s
OK AeroTech K1000 314.8oz 67ft/s 825ft/s 12.3G 6,346ft 18.6s 16s
OK Cesaroni L585 321.2oz 49ft/s 769ft/s 6.5G 6,723ft 20.1s 16s
OK Cesaroni L820 343.6oz 50ft/s 869ft/s 9.4G 7,214ft 20.3s 17s
OK Cesaroni L910 315.3oz 60ft/s 911ft/s 11.1G 7,385ft 20.0s 17s
OK Cesaroni L3200 338.1oz 106ft/s 1,140ft/s 40.8G 8,080ft 19.7s 19s
OK Gorilla L789 342.2oz 51ft/s 939ft/s 8.7G 8,150ft 21.3s 17s
OK Gorilla L425 346.5oz 49ft/s 739ft/s 6.9G 8,395ft 22.9s 15s
OK AeroTech L1150 352.6oz 66ft/s 1,024ft/s 12.8G 8,447ft 21.0s 18s
OK Loki L930 347.8oz 60ft/s 1,001ft/s 10.7G 8,674ft 21.5s 18s
OK Gorilla L1150 346.5oz 60ft/s 1,043ft/s 17.7G 8,689ft 21.1s 18s
OK Gorilla L985 351.1oz 51ft/s 1,048ft/s 11.0G 8,714ft 21.7s 18s
OK AeroTech L875 384.4oz 53ft/s 979ft/s 8.8G 8,779ft 22.1s 17s
OK Cesaroni L995 349.7oz 66ft/s 1,017ft/s 12.5G 8,813ft 21.4s 18s
OK AeroTech L1040 389.4oz 56ft/s 1,011ft/s 11.1G 8,877ft 21.8s 18s
OK AeroTech L850 355.0oz 60ft/s 979ft/s 11.3G 8,878ft 21.7s 17s
OK AeroTech L900 389.6oz 52ft/s 987ft/s 9.0G 8,938ft 22.2s 18s
OK Gorilla L1112 351.0oz 68ft/s 1,064ft/s 12.4G 8,947ft 21.5s 18s
OK Cesaroni L851 356.7oz 54ft/s 1,012ft/s 9.1G 8,973ft 22.1s 18s
OK Cesaroni L1720 340.8oz 80ft/s 1,196ft/s 20.2G 9,050ft 20.9s 19s
OK Cesaroni L1355 398.0oz 72ft/s 1,080ft/s 15.9G 9,055ft 21.5s 18s
OK AeroTech L1520 351.8oz 74ft/s 1,144ft/s 16.9G 9,073ft 21.2s 19s
OK Cesaroni L1050 344.6oz 64ft/s 1,075ft/s 11.9G 9,159ft 21.7s 18s
OK Cesaroni L800 346.8oz 62ft/s 987ft/s 11.4G 9,213ft 22.2s 17s
OK Loki L840 355.2oz 58ft/s 1,015ft/s 11.1G 9,375ft 22.2s 17s
OK Loki L1482 347.8oz 68ft/s 1,206ft/s 16.0G 9,388ft 21.5s 19s
OK AeroTech L1390 359.8oz 69ft/s 1,148ft/s 16.1G 9,415ft 21.7s 19s
OK AeroTech L1170 399.0oz 67ft/s 1,102ft/s 12.5G 9,526ft 22.1s 18s
OK Cesaroni L1350 349.0oz 74ft/s 1,249ft/s 15.1G 10,267ft 22.2s 19s
OK AeroTech L1420 383.9oz 73ft/s 1,272ft/s 15.2G 10,573ft 22.6s 19s
OK Cesaroni L1685 436.4oz 79ft/s 1,254ft/s 18.0G 10,703ft 22.7s 20s
OK AeroTech L1365 396.1oz 67ft/s 1,246ft/s 14.0G 10,766ft 23.0s 19s
OK Cesaroni L1410 403.4oz 63ft/s 1,272ft/s 14.1G 10,828ft 23.1s 20s
OK Cesaroni L2375 369.8oz 92ft/s 1,487ft/s 25.7G 11,119ft 22.3s 20s
OK AeroTech L2200 391.7oz 94ft/s 1,401ft/s 28.7G 11,195ft 22.5s 20s
OK Cesaroni L1395 375.5oz 78ft/s 1,340ft/s 16.4G 11,241ft 23.1s 20s
OK Cesaroni L1115 378.3oz 73ft/s 1,236ft/s 14.7G 11,433ft 23.6s 19s
OK AeroTech M1350 392.6oz 74ft/s 1,299ft/s 15.4G 11,517ft 23.3s 19s
OK AeroTech M1500 395.7oz 77ft/s 1,357ft/s 14.9G 11,666ft 23.5s 20s
OK Cesaroni M1101 397.2oz 68ft/s 1,261ft/s 12.0G 11,696ft 24.0s 19s
OK Cesaroni M2250 378.7oz 92ft/s 1,540ft/s 25.2G 11,959ft 22.9s 20s
OK AeroTech M1780 389.3oz 88ft/s 1,441ft/s 21.3G 12,018ft 23.3s 20s
OK AeroTech M1297 386.6oz 79ft/s 1,343ft/s 17.6G 12,053ft 23.7s 19s
OK Cesaroni M1230 393.9oz 63ft/s 1,340ft/s 13.2G 12,212ft 24.1s 19s
OK Cesaroni M1830 382.6oz 84ft/s 1,504ft/s 20.0G 12,297ft 23.5s 20s
OK Cesaroni M1160 424.0oz 57ft/s 1,345ft/s 11.1G 12,765ft 25.0s 20s
OK Cesaroni M3100 400.0oz 99ft/s 1,739ft/s 34.0G 12,792ft 23.2s 21s
OK Cesaroni M1810 414.0oz 78ft/s 1,555ft/s 18.0G 12,947ft 24.2s 21s
OK Cesaroni M1670 407.5oz 79ft/s 1,457ft/s 18.6G 13,121ft 24.7s 21s
OK Cesaroni M1675 407.2oz 74ft/s 1,536ft/s 17.9G 13,144ft 24.2s 20s
OK Cesaroni M1401 426.7oz 69ft/s 1,446ft/s 13.1G 13,235ft 24.9s 20s
OK Cesaroni M1400 410.0oz 80ft/s 1,435ft/s 18.3G 13,364ft 24.7s 20s
OK Cesaroni M1300 422.5oz 90ft/s 1,368ft/s 23.4G 13,583ft 24.9s 20s
OK Cesaroni M1540 431.3oz 78ft/s 1,537ft/s 19.1G 13,976ft 25.0s 21s
OK Cesaroni M2020 471.0oz 85ft/s 1,770ft/s 19.7G 15,788ft 25.8s 22s

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 Cesaroni K555 speed at end of launch guide too slow (43ft/s)
failedG Gorilla L695 speed at end of launch guide too slow (38ft/s)
failedG Loki L780 speed at end of launch guide too slow (44ft/s)
failedG Loki L480 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni L645 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni L395 speed at end of launch guide too slow (38ft/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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