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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 63 motors that fit and appear to have enough thrust (723 motors didn't fit, 5 motors failed safety checks). 68 motor had thrust curves available and 123 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:   Tethys XL
Owner: Randy Collins
Body Diameter: 3.90in
Dry Weight: 101.3oz
MMT Diameter: 54.0mm
MMT Length: 15.00in
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 I215 119.9oz 65ft/s 318ft/s 6.8G 1,439ft 9.8s 8s
OK AeroTech I170 119.9oz 55ft/s 307ft/s 5.3G 1,456ft 10.1s 8s
OK AeroTech I229 119.4oz 65ft/s 338ft/s 7.3G 1,547ft 10.0s 8s
OK AeroTech I599 119.4oz 118ft/s 375ft/s 22.1G 1,558ft 9.5s 9s
OK Cesaroni I150 121.4oz 50ft/s 322ft/s 4.2G 1,735ft 11.2s 8s
OK Cesaroni I445 121.6oz 91ft/s 416ft/s 14.8G 1,891ft 10.5s 9s
OK Cesaroni I218 121.8oz 64ft/s 379ft/s 6.8G 1,928ft 11.2s 9s
OK Cesaroni I165 122.3oz 54ft/s 358ft/s 4.6G 2,008ft 11.8s 8s
OK Cesaroni I100 129.8oz 59ft/s 303ft/s 7.4G 2,422ft 13.6s 5s
OK AeroTech I65 127.8oz 51ft/s 313ft/s 4.5G 2,595ft 14.4s 6s
OK Cesaroni J250 130.6oz 57ft/s 491ft/s 6.7G 2,761ft 13.1s 10s
OK Cesaroni J145 130.8oz 61ft/s 396ft/s 12.3G 2,845ft 13.7s 9s
OK AeroTech J250 133.3oz 61ft/s 500ft/s 7.3G 2,855ft 13.1s 10s
OK Cesaroni J280 135.0oz 64ft/s 520ft/s 7.6G 2,881ft 13.1s 11s
OK AeroTech J250 126.3oz 72ft/s 500ft/s 8.6G 2,969ft 13.2s 10s
OK Cesaroni J1055 128.5oz 134ft/s 649ft/s 31.0G 3,066ft 12.4s 12s
OK AeroTech J315 131.3oz 74ft/s 544ft/s 9.4G 3,111ft 13.3s 11s
OK AeroTech J180 129.8oz 71ft/s 482ft/s 8.0G 3,327ft 14.1s 9s
OK Cesaroni J240 132.2oz 64ft/s 547ft/s 7.0G 3,351ft 14.1s 11s
OK Gorilla J365 143.8oz 63ft/s 599ft/s 11.6G 3,376ft 13.9s 12s
OK Cesaroni J430 129.5oz 85ft/s 636ft/s 13.5G 3,425ft 13.5s 12s
OK AeroTech J275 131.8oz 66ft/s 550ft/s 8.2G 3,460ft 14.1s 10s
OK Cesaroni J293 130.9oz 69ft/s 589ft/s 8.8G 3,470ft 14.0s 11s
OK AeroTech J1299 130.7oz 156ft/s 737ft/s 39.9G 3,491ft 13.0s 12s
OK Cesaroni J210 131.0oz 65ft/s 508ft/s 7.9G 3,497ft 14.7s 11s
OK AeroTech J460 129.1oz 92ft/s 648ft/s 14.5G 3,516ft 13.5s 11s
OK Cesaroni J244 133.4oz 60ft/s 566ft/s 6.1G 3,521ft 14.5s 11s
OK AMW J1365 140.8oz 152ft/s 755ft/s 39.3G 3,694ft 13.3s 13s
OK AMW J400 150.0oz 72ft/s 652ft/s 10.6G 3,780ft 14.4s 12s
OK Loki J350 145.7oz 71ft/s 651ft/s 10.3G 3,826ft 14.5s 12s
OK Gorilla J167 144.2oz 66ft/s 473ft/s 8.3G 3,837ft 15.6s 10s
OK AMW J475 151.0oz 82ft/s 702ft/s 13.9G 3,982ft 14.4s 12s
OK Cesaroni J360 140.2oz 70ft/s 689ft/s 12.9G 4,080ft 14.8s 12s
OK Cesaroni J380 146.9oz 70ft/s 706ft/s 9.6G 4,119ft 14.9s 12s
OK Gorilla J465 143.0oz 80ft/s 730ft/s 15.6G 4,124ft 14.6s 12s
OK Gorilla J395 142.2oz 73ft/s 707ft/s 10.7G 4,142ft 14.9s 12s
OK AeroTech J1799 140.5oz 170ft/s 887ft/s 54.3G 4,163ft 13.7s 13s
OK AeroTech J450 144.4oz 80ft/s 729ft/s 12.5G 4,202ft 14.8s 13s
OK Cesaroni J1520 137.5oz 155ft/s 896ft/s 43.9G 4,215ft 13.9s 13s
OK AMW J395 146.0oz 79ft/s 703ft/s 10.6G 4,268ft 15.1s 12s
OK Gorilla J485 143.3oz 82ft/s 758ft/s 13.6G 4,271ft 14.8s 13s
OK AeroTech J135 141.5oz 54ft/s 521ft/s 5.5G 4,314ft 16.5s 9s
OK AMW J325 144.7oz 83ft/s 655ft/s 12.4G 4,346ft 15.3s 12s
OK Gorilla J535 144.5oz 98ft/s 783ft/s 15.9G 4,349ft 14.6s 13s
OK AMW J440 144.7oz 106ft/s 749ft/s 19.0G 4,357ft 14.6s 13s
OK Loki J525 145.0oz 94ft/s 793ft/s 15.3G 4,382ft 14.7s 13s
OK Loki J820 144.0oz 124ft/s 835ft/s 25.0G 4,402ft 14.4s 13s
OK AeroTech J540 139.5oz 99ft/s 810ft/s 16.5G 4,516ft 14.7s 12s
OK AeroTech J401 133.5oz 84ft/s 774ft/s 11.9G 4,522ft 15.0s 12s
OK AMW J745 144.3oz 115ft/s 866ft/s 20.9G 4,647ft 14.8s 13s
OK Loki J175 145.4oz 71ft/s 568ft/s 9.4G 4,690ft 16.6s 10s
OK Cesaroni J355 142.7oz 78ft/s 743ft/s 10.0G 4,715ft 15.7s 12s
OK Loki J300 147.7oz 74ft/s 691ft/s 8.8G 4,796ft 16.2s 12s
OK Cesaroni J295 140.8oz 79ft/s 697ft/s 10.2G 4,826ft 16.0s 12s
OK AeroTech J800 139.6oz 119ft/s 908ft/s 23.5G 4,859ft 14.9s 13s
OK Cesaroni J760 139.3oz 112ft/s 941ft/s 22.2G 4,913ft 15.0s 13s
OK AeroTech J415 142.5oz 83ft/s 802ft/s 12.7G 4,947ft 15.6s 12s
OK Cesaroni J140 146.4oz 50ft/s 516ft/s 4.3G 4,948ft 18.3s 9s
OK Cesaroni J449 140.9oz 87ft/s 845ft/s 13.3G 4,968ft 15.6s 13s
OK Cesaroni K360 144.8oz 73ft/s 797ft/s 8.9G 5,054ft 16.1s 13s
OK AeroTech K2050 146.9oz 179ft/s 1,093ft/s 52.9G 5,108ft 14.8s 14s
OK AeroTech K400 143.4oz 88ft/s 805ft/s 12.5G 5,161ft 16.1s 13s
OK AeroTech K535 145.9oz 97ft/s 902ft/s 14.8G 5,412ft 15.9s 13s

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 (42ft/s)
failedG Cesaroni I140 speed at end of launch guide too slow (46ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni I120 speed at end of launch guide too slow (45ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (45ft/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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