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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 76 motors that fit and appear to have enough thrust (698 motors didn't fit, 17 motors failed safety checks). 93 motor had thrust curves available and 208 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
Owner: Chuck Poindexter
Body Diameter: 3.90in
Dry Weight: 70.9oz
MMT Diameter: 38.0mm
MMT Length: 13.00in
CD: 0.60
Web Site: http://www.ke5hgq.com/images/rocket/tethys1.jpg

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 Loki G80 79.9oz 51ft/s 127ft/s 4.1G 338ft 5.1s 4s
OK AeroTech G339 77.3oz 101ft/s 157ft/s 16.5G 360ft 4.8s 4s
OK Loki G94 79.4oz 56ft/s 136ft/s 5.0G 365ft 5.2s 4s
OK Loki G66 79.7oz 51ft/s 132ft/s 4.2G 407ft 5.7s 4s
OK Cesaroni G185 77.5oz 71ft/s 168ft/s 8.6G 427ft 5.4s 5s
OK Cesaroni G115 77.8oz 55ft/s 168ft/s 5.1G 480ft 5.9s 5s
OK Loki H100 82.7oz 55ft/s 212ft/s 5.4G 798ft 7.5s 5s
warningsW AeroTech H283 79.6oz 94ft/s 263ft/s 14.1G 879ft 7.3s 7s
OK AeroTech H148 81.8oz 69ft/s 248ft/s 7.5G 919ft 7.8s 6s
OK AeroTech H130 79.3oz 80ft/s 243ft/s 10.8G 940ft 7.7s 6s
OK AeroTech H100 80.1oz 53ft/s 241ft/s 4.8G 1,003ft 8.4s 6s
OK AeroTech H123 80.6oz 59ft/s 239ft/s 5.6G 1,006ft 8.4s 6s
OK Loki H90 82.7oz 57ft/s 234ft/s 5.4G 1,020ft 8.5s 6s
OK AeroTech H669 79.8oz 144ft/s 310ft/s 48.9G 1,032ft 7.6s 7s
OK Cesaroni H123 81.4oz 54ft/s 268ft/s 5.6G 1,047ft 8.4s 6s
OK Loki H125 83.0oz 69ft/s 259ft/s 7.9G 1,077ft 8.4s 6s
OK Loki H144 82.8oz 77ft/s 270ft/s 9.8G 1,080ft 8.2s 7s
OK Cesaroni H143 83.1oz 56ft/s 278ft/s 6.1G 1,080ft 8.5s 7s
OK AeroTech H219 80.1oz 85ft/s 299ft/s 12.2G 1,106ft 8.2s 7s
OK AeroTech H242 80.2oz 77ft/s 301ft/s 9.7G 1,162ft 8.5s 7s
OK Loki H160 82.7oz 85ft/s 294ft/s 11.5G 1,191ft 8.5s 7s
OK Cesaroni H120 81.3oz 58ft/s 289ft/s 5.6G 1,221ft 9.1s 7s
OK Cesaroni H400 80.9oz 106ft/s 345ft/s 18.7G 1,239ft 8.4s 8s
OK Cesaroni H110 82.4oz 51ft/s 284ft/s 4.4G 1,242ft 9.3s 7s
OK Cesaroni H125 81.2oz 56ft/s 302ft/s 5.7G 1,265ft 9.2s 7s
OK Cesaroni H100 82.4oz 51ft/s 292ft/s 4.2G 1,344ft 9.8s 7s
OK Cesaroni H152 81.4oz 67ft/s 320ft/s 8.4G 1,353ft 9.2s 7s
OK AeroTech H178 82.3oz 63ft/s 338ft/s 8.4G 1,384ft 9.3s 8s
OK Cesaroni H225 77.7oz 81ft/s 357ft/s 10.9G 1,391ft 9.0s 8s
OK AeroTech I218 84.0oz 85ft/s 373ft/s 11.2G 1,572ft 9.6s 8s
OK AeroTech H550 82.3oz 131ft/s 420ft/s 27.4G 1,583ft 9.2s 9s
OK AeroTech H170 82.5oz 67ft/s 360ft/s 7.9G 1,585ft 9.8s 8s
OK AeroTech H550 82.0oz 132ft/s 424ft/s 27.6G 1,589ft 9.2s 9s
warningsW Cesaroni H565 83.7oz 128ft/s 427ft/s 26.5G 1,605ft 9.3s 9s
OK AeroTech I180 84.5oz 95ft/s 354ft/s 14.4G 1,617ft 9.7s 8s
OK AeroTech H999 82.6oz 175ft/s 443ft/s 69.0G 1,622ft 9.2s 9s
OK AeroTech I161 83.8oz 71ft/s 360ft/s 8.4G 1,655ft 10.0s 8s
OK Cesaroni I180 84.8oz 66ft/s 384ft/s 7.9G 1,682ft 10.1s 8s
OK AeroTech I140 83.5oz 64ft/s 353ft/s 6.7G 1,700ft 10.3s 8s
OK AeroTech I225 88.0oz 73ft/s 400ft/s 10.3G 1,767ft 10.1s 8s
OK AeroTech I245 83.8oz 102ft/s 408ft/s 16.8G 1,774ft 9.9s 8s
OK AeroTech I357 83.0oz 97ft/s 423ft/s 15.4G 1,788ft 9.9s 9s
OK Cesaroni I212 87.7oz 70ft/s 412ft/s 9.4G 1,799ft 10.3s 9s
OK AeroTech I154 88.3oz 58ft/s 359ft/s 5.9G 1,878ft 11.1s 8s
OK Cesaroni I566 84.5oz 119ft/s 488ft/s 25.4G 1,887ft 9.9s 9s
OK Cesaroni I195 85.6oz 72ft/s 435ft/s 9.0G 2,011ft 10.8s 9s
OK Cesaroni I345 84.8oz 98ft/s 490ft/s 15.5G 2,042ft 10.4s 9s
OK AeroTech I285 88.3oz 93ft/s 472ft/s 14.4G 2,071ft 10.6s 9s
OK Cesaroni I170 84.7oz 71ft/s 444ft/s 8.6G 2,077ft 11.0s 9s
OK Cesaroni I175 86.3oz 67ft/s 436ft/s 7.0G 2,086ft 11.1s 9s
OK Cesaroni I800 87.0oz 141ft/s 545ft/s 35.9G 2,096ft 10.2s 10s
OK Cesaroni I236 85.0oz 80ft/s 469ft/s 12.2G 2,128ft 10.9s 9s
OK AeroTech I1299 85.8oz 197ft/s 569ft/s 63.0G 2,146ft 10.2s 10s
OK AeroTech I305 91.4oz 93ft/s 485ft/s 15.2G 2,177ft 10.7s 9s
OK Cesaroni I223 88.3oz 74ft/s 476ft/s 9.3G 2,190ft 11.1s 9s
OK AeroTech I211 86.9oz 84ft/s 458ft/s 12.3G 2,190ft 11.0s 9s
OK AeroTech I195 91.1oz 87ft/s 455ft/s 13.3G 2,206ft 11.0s 9s
OK AeroTech I300 86.5oz 100ft/s 498ft/s 18.4G 2,214ft 10.8s 9s
OK Loki I316 89.9oz 111ft/s 516ft/s 19.1G 2,358ft 11.0s 10s
warningsW Loki I110 91.7oz 61ft/s 412ft/s 9.4G 2,415ft 12.1s 8s
OK Cesaroni I287 92.2oz 83ft/s 534ft/s 12.3G 2,419ft 11.4s 10s
OK Loki I210 89.9oz 98ft/s 491ft/s 16.7G 2,467ft 11.4s 9s
OK Loki I405 90.1oz 135ft/s 562ft/s 31.1G 2,473ft 11.0s 10s
OK AeroTech I59 88.1oz 58ft/s 273ft/s 5.9G 2,531ft 14.1s 6s
OK Cesaroni I285 88.7oz 88ft/s 554ft/s 13.3G 2,566ft 11.6s 10s
OK Loki I377 90.7oz 120ft/s 570ft/s 25.1G 2,601ft 11.4s 10s
OK Cesaroni I255 89.1oz 83ft/s 550ft/s 11.8G 2,605ft 11.7s 10s
OK Loki I430 89.9oz 109ft/s 608ft/s 20.3G 2,607ft 11.4s 10s
OK AeroTech I366 90.5oz 107ft/s 594ft/s 18.4G 2,661ft 11.5s 10s
OK AeroTech I364 94.8oz 92ft/s 581ft/s 14.8G 2,672ft 11.6s 10s
OK Cesaroni I470 88.4oz 112ft/s 639ft/s 21.7G 2,689ft 11.4s 10s
OK Cesaroni I303 88.5oz 95ft/s 586ft/s 15.8G 2,712ft 11.7s 10s
OK Cesaroni I242 90.3oz 81ft/s 566ft/s 10.4G 2,760ft 12.1s 10s
OK AeroTech I435 89.2oz 131ft/s 648ft/s 29.5G 2,817ft 11.5s 10s
OK AeroTech I284 90.5oz 104ft/s 618ft/s 18.3G 2,891ft 11.9s 10s
OK Cesaroni J357 92.1oz 104ft/s 694ft/s 19.1G 3,182ft 12.3s 11s

W Motor total weight unknown, lift-off Weight not accurate.

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 G67 speed at end of launch guide too slow (44ft/s)
failedG Loki G69 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (42ft/s)
failedG Loki G70 speed at end of launch guide too slow (48ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (31ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (40ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (47ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (42ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (34ft/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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