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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 66 motors that fit and appear to have enough thrust (718 motors didn't fit, 10 motors failed safety checks). 75 motor had thrust curves available and 159 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:   Ultimate Dark Star
Owner: KenRico
Body Diameter: 6.17in
Dry Weight: 41.00lb
MMT Diameter: 98.0mm
MMT Length: 60.00in
CD: 0.45

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 K1620 47.78lb 64ft/s 326ft/s 7.8G 1,708ft 10.8s 9s
OK AeroTech K1999 47.59lb 71ft/s 350ft/s 9.1G 1,896ft 11.3s 10s
OK AeroTech L1300 51.77lb 54ft/s 536ft/s 5.9G 4,352ft 17.4s 14s
OK AeroTech L1500 51.27lb 63ft/s 563ft/s 7.4G 4,640ft 17.4s 14s
OK AeroTech L2500 52.00lb 80ft/s 604ft/s 11.6G 4,673ft 17.0s 15s
OK Cesaroni L3150 51.43lb 92ft/s 644ft/s 15.3G 4,988ft 17.3s 16s
OK Contrail M2800 64.60lb 74ft/s 607ft/s 18.8G 5,180ft 17.9s 16s
OK Contrail M2700 64.00lb 111ft/s 612ft/s 21.7G 5,256ft 17.8s 16s
OK Cesaroni M1560 51.97lb 60ft/s 633ft/s 7.0G 5,500ft 19.0s 16s
OK Contrail M1575 64.55lb 71ft/s 640ft/s 9.4G 6,087ft 19.8s 16s
OK AeroTech M1305 56.65lb 57ft/s 694ft/s 6.8G 7,173ft 21.7s 16s
OK AeroTech M1600 56.25lb 59ft/s 762ft/s 6.7G 7,481ft 21.9s 17s
OK AeroTech M1340 56.43lb 57ft/s 740ft/s 6.7G 7,912ft 22.5s 17s
OK Cesaroni M1060 55.71lb 56ft/s 704ft/s 5.1G 8,007ft 23.4s 16s
OK AeroTech M4500 55.60lb 109ft/s 920ft/s 22.4G 8,122ft 21.1s 19s
OK AeroTech M1419 56.25lb 50ft/s 717ft/s 5.1G 8,198ft 23.6s 16s
OK Cesaroni M1290 57.34lb 53ft/s 765ft/s 5.3G 8,234ft 23.4s 17s
OK Cesaroni M4770 55.34lb 106ft/s 948ft/s 22.9G 8,285ft 21.2s 20s
OK Cesaroni M1520 55.81lb 60ft/s 800ft/s 6.5G 8,289ft 22.9s 18s
OK Cesaroni M2505 54.78lb 76ft/s 885ft/s 11.4G 8,316ft 22.0s 19s
OK AeroTech M2100 56.25lb 71ft/s 866ft/s 11.3G 8,489ft 22.3s 19s
OK AeroTech M2400 55.22lb 76ft/s 889ft/s 10.4G 8,533ft 22.3s 19s
OK AeroTech M1800 61.20lb 61ft/s 830ft/s 9.5G 8,566ft 23.0s 18s
OK Cesaroni M1790 59.24lb 59ft/s 855ft/s 7.0G 8,697ft 23.3s 19s
OK AeroTech M1845 55.73lb 70ft/s 876ft/s 9.0G 9,065ft 23.2s 18s
OK Hypertek M1000 60.64lb 52ft/s 737ft/s 4.6G 9,388ft 25.6s 16s
OK Cesaroni M6400 58.46lb 122ft/s 1,070ft/s 28.2G 9,585ft 22.4s 21s
OK Hypertek M1010 60.84lb 53ft/s 746ft/s 4.7G 9,636ft 25.9s 16s
OK Gorilla M1025 63.35lb 57ft/s 746ft/s 5.3G 9,892ft 26.0s 17s
OK AeroTech M2000 60.81lb 66ft/s 949ft/s 7.9G 9,951ft 24.4s 20s
OK AeroTech M6000 59.65lb 116ft/s 1,153ft/s 27.2G 10,628ft 23.5s 22s
OK AeroTech M2500 58.78lb 79ft/s 1,039ft/s 10.2G 10,642ft 24.4s 20s
OK Cesaroni M1890 60.45lb 63ft/s 989ft/s 7.6G 10,869ft 25.4s 20s
OK Cesaroni M1450 59.91lb 69ft/s 914ft/s 8.1G 10,992ft 25.9s 19s
OK Cesaroni M1800 59.39lb 66ft/s 988ft/s 7.3G 10,999ft 25.5s 20s
OK AeroTech N2220 67.45lb 70ft/s 1,000ft/s 8.9G 11,111ft 25.4s 20s
OK Cesaroni M795 59.72lb 59ft/s 738ft/s 5.5G 11,113ft 28.1s 15s
OK Cesaroni N10000 62.87lb 155ft/s 1,234ft/s 43.5G 11,149ft 23.6s 23s
OK Cesaroni M3400 58.88lb 86ft/s 1,144ft/s 14.4G 11,230ft 24.5s 22s
OK AeroTech M1939 60.82lb 63ft/s 966ft/s 7.3G 11,337ft 26.0s 19s
OK Cesaroni N1800 61.24lb 64ft/s 997ft/s 7.1G 11,373ft 26.0s 20s
OK Cesaroni N2600 66.31lb 71ft/s 1,097ft/s 9.7G 11,709ft 25.8s 22s
OK Gorilla N2717 63.35lb 72ft/s 1,103ft/s 14.4G 11,825ft 25.5s 21s
OK Cesaroni N2200 66.04lb 70ft/s 1,108ft/s 8.3G 12,825ft 27.1s 21s
OK Loki N3800 66.57lb 97ft/s 1,254ft/s 16.5G 13,188ft 26.1s 23s
OK AeroTech N2000 68.08lb 72ft/s 1,107ft/s 8.9G 13,809ft 28.0s 20s
OK Gorilla N1720 75.00lb 76ft/s 1,020ft/s 9.9G 14,054ft 28.7s 20s
OK Cesaroni N5600 65.87lb 112ft/s 1,461ft/s 22.2G 14,398ft 26.5s 24s
OK Cesaroni N2500 66.72lb 85ft/s 1,234ft/s 11.4G 14,469ft 27.9s 22s
OK AeroTech N3300 67.57lb 77ft/s 1,348ft/s 12.9G 14,502ft 27.5s 23s
OK Cesaroni N3400 71.80lb 76ft/s 1,342ft/s 12.3G 14,619ft 27.8s 24s
OK Cesaroni N2850 66.77lb 77ft/s 1,311ft/s 10.6G 14,637ft 27.9s 23s
OK AeroTech N1000 69.16lb 62ft/s 903ft/s 5.9G 14,902ft 31.7s 16s
OK Cesaroni N1975 70.21lb 55ft/s 1,224ft/s 6.6G 14,979ft 29.7s 22s
OK Cesaroni N3180 67.89lb 83ft/s 1,370ft/s 12.0G 14,983ft 27.9s 23s
OK Cesaroni N1100 66.55lb 71ft/s 954ft/s 8.2G 15,205ft 30.8s 18s
OK Cesaroni N2501 70.34lb 78ft/s 1,309ft/s 10.2G 15,809ft 29.0s 23s
OK Cesaroni N1560 75.96lb 70ft/s 1,099ft/s 8.5G 16,946ft 31.6s 21s
OK Cesaroni N3800 72.44lb 92ft/s 1,551ft/s 14.3G 17,530ft 29.3s 25s
OK Cesaroni N4100 73.51lb 89ft/s 1,629ft/s 14.5G 17,675ft 29.4s 25s
OK Cesaroni N2540 76.89lb 67ft/s 1,418ft/s 7.9G 17,776ft 31.0s 24s
OK Cesaroni N2900 72.23lb 85ft/s 1,465ft/s 11.5G 17,954ft 30.3s 24s
OK Cesaroni N3301 77.43lb 88ft/s 1,536ft/s 13.4G 18,556ft 30.4s 25s
OK Cesaroni N5800 73.69lb 109ft/s 1,854ft/s 21.3G 19,512ft 29.7s 26s
OK Cesaroni O3400 78.13lb 88ft/s 1,625ft/s 13.0G 19,872ft 31.0s 25s
warningsD Gorilla M1565 62.61lb 6:1 thrust/weight ratio (no data)

D No simulation data found for this motor.

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 K680 speed at end of launch guide too slow (39ft/s)
failedG AeroTech K650 speed at end of launch guide too slow (36ft/s)
failedG AeroTech K458 speed at end of launch guide too slow (27ft/s)
failedG AeroTech L339 speed at end of launch guide too slow (25ft/s)
failedG AeroTech L400 speed at end of launch guide too slow (33ft/s)
failedG AeroTech L952 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni L610 speed at end of launch guide too slow (43ft/s)
failedG AeroTech M1075 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni M520 speed at end of launch guide too slow (46ft/s)
failedG AeroTech M750 speed at end of launch guide too slow (41ft/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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