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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 44 motors that fit and appear to have enough thrust (738 motors didn't fit, 12 motors failed safety checks). 55 motor had thrust curves available and 113 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:   Swamp Rat
Owner: Edward Wilk
Body Diameter: 10.25in
Dry Weight: 57.00lb
MMT Diameter: 98.0mm
MMT Length: 40.00in
CD: 0.55

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 63.78lb 62ft/s 228ft/s 5.6G 872ft 7.9s 6s
OK AeroTech K1999 63.59lb 67ft/s 247ft/s 6.5G 969ft 8.2s 7s
OK AeroTech L1300 67.77lb 51ft/s 365ft/s 4.1G 2,181ft 12.7s 9s
OK AeroTech L1500 67.27lb 59ft/s 386ft/s 5.3G 2,326ft 12.7s 9s
OK AeroTech L2500 68.00lb 76ft/s 432ft/s 8.4G 2,370ft 12.2s 10s
OK Cesaroni L3150 67.43lb 87ft/s 464ft/s 11.2G 2,512ft 12.3s 11s
OK Cesaroni M1560 67.97lb 56ft/s 434ft/s 4.9G 2,747ft 13.7s 10s
OK AeroTech M1305 72.65lb 55ft/s 464ft/s 5.0G 3,625ft 15.9s 10s
OK AeroTech M1600 72.25lb 57ft/s 518ft/s 4.8G 3,741ft 15.8s 11s
OK AeroTech M1340 72.43lb 53ft/s 491ft/s 4.8G 3,966ft 16.4s 11s
OK Cesaroni M1060 71.71lb 53ft/s 453ft/s 3.7G 4,006ft 17.2s 10s
OK AeroTech M4500 71.60lb 106ft/s 670ft/s 16.5G 4,015ft 14.7s 13s
OK Cesaroni M4770 71.34lb 103ft/s 691ft/s 17.5G 4,074ft 14.8s 13s
OK Cesaroni M2505 70.78lb 73ft/s 619ft/s 8.3G 4,102ft 15.5s 13s
OK Cesaroni M1290 73.34lb 50ft/s 506ft/s 3.7G 4,117ft 17.1s 11s
OK Cesaroni M1520 71.81lb 57ft/s 540ft/s 4.6G 4,134ft 16.6s 12s
OK AeroTech M2100 72.25lb 69ft/s 594ft/s 8.1G 4,213ft 15.8s 12s
OK AeroTech M2400 71.22lb 74ft/s 619ft/s 7.6G 4,222ft 15.8s 12s
OK AeroTech M1800 77.20lb 58ft/s 572ft/s 7.3G 4,338ft 16.6s 12s
OK Cesaroni M1790 75.24lb 56ft/s 585ft/s 5.0G 4,352ft 16.8s 12s
OK AeroTech M1845 71.73lb 67ft/s 596ft/s 6.5G 4,498ft 16.5s 12s
OK Cesaroni M6400 74.46lb 119ft/s 791ft/s 21.4G 4,695ft 15.4s 14s
OK AeroTech M2000 76.81lb 64ft/s 651ft/s 5.8G 4,963ft 17.4s 13s
OK Gorilla M1025 79.35lb 53ft/s 488ft/s 4.1G 5,066ft 19.3s 10s
OK AeroTech M6000 75.65lb 112ft/s 852ft/s 20.1G 5,181ft 16.1s 14s
OK AeroTech M2500 74.78lb 75ft/s 722ft/s 7.6G 5,253ft 17.3s 13s
OK Cesaroni M1890 76.45lb 61ft/s 663ft/s 5.5G 5,399ft 18.2s 13s
OK Cesaroni N10000 78.87lb 153ft/s 931ft/s 33.0G 5,417ft 16.1s 15s
OK Cesaroni M1800 75.39lb 62ft/s 665ft/s 5.5G 5,455ft 18.3s 13s
OK Cesaroni M3400 74.88lb 84ft/s 809ft/s 10.7G 5,479ft 17.1s 14s
OK Cesaroni M1450 75.91lb 65ft/s 601ft/s 6.2G 5,501ft 18.7s 12s
OK Cesaroni M795 75.72lb 54ft/s 467ft/s 4.1G 5,596ft 21.1s 8s
OK Cesaroni N1800 77.24lb 61ft/s 664ft/s 5.4G 5,659ft 18.7s 13s
OK AeroTech M1939 76.82lb 61ft/s 639ft/s 5.3G 5,664ft 18.7s 12s
OK Cesaroni N2600 82.31lb 69ft/s 766ft/s 7.0G 5,837ft 18.2s 14s
OK Gorilla N2717 79.35lb 71ft/s 773ft/s 10.6G 5,855ft 17.9s 14s
OK Cesaroni N2200 82.04lb 68ft/s 758ft/s 6.5G 6,415ft 19.3s 13s
OK Loki N3800 82.57lb 96ft/s 888ft/s 12.1G 6,482ft 18.1s 15s
OK Cesaroni N5600 81.87lb 110ft/s 1,055ft/s 17.2G 6,940ft 18.1s 16s
OK Cesaroni N2500 82.72lb 80ft/s 837ft/s 9.0G 7,164ft 19.7s 14s
OK Cesaroni N2850 82.77lb 75ft/s 900ft/s 7.8G 7,193ft 19.6s 15s
OK Cesaroni N3180 83.89lb 81ft/s 943ft/s 8.9G 7,346ft 19.5s 15s
OK Cesaroni N1975 86.21lb 53ft/s 808ft/s 4.7G 7,467ft 21.4s 14s
OK Cesaroni N2501 86.34lb 76ft/s 875ft/s 8.1G 7,846ft 20.5s 14s

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 (35ft/s)
failedG AeroTech K650 speed at end of launch guide too slow (32ft/s)
failedG AeroTech K458 speed at end of launch guide too slow (24ft/s)
failedG AeroTech L339 speed at end of launch guide too slow (18ft/s)
failedG AeroTech L400 speed at end of launch guide too slow (29ft/s)
failedG AeroTech L952 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni L610 speed at end of launch guide too slow (39ft/s)
failedG AeroTech M1075 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni M520 speed at end of launch guide too slow (42ft/s)
failed5 Gorilla M1565 average thrust fails 5:1 thrust/weight ratio (4:1)
failedG AeroTech M1419 speed at end of launch guide too slow (47ft/s)
failedG AeroTech M750 speed at end of launch guide too slow (38ft/s)

G These simulations were run with a launch guide length of 12ft (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.)

5 The 5:1 thrust-to-weight ratio check is a useful rule of thumb, but it does break down for motors with unusual thrust curves. For example, motors with a high initial thrust and a long tail-off may fail this test but still be safe for use.

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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