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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 58 motors that fit and appear to have enough thrust (738 motors didn't fit, 15 motors failed safety checks). 73 motor had thrust curves available and 154 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:   Ethos 2.0 Mac Performance
Owner: Philip Dougan
Body Diameter: 4.00in
Dry Weight: 54.6oz
MMT Diameter: 38.0mm
MMT Length: 10.00in
CD: 0.30

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 G69 63.1oz 48ft/s 153ft/s 4.6G 474ft 6.0s 4s
OK Loki G70 63.1oz 49ft/s 162ft/s 4.8G 534ft 6.4s 5s
OK Loki G80 63.6oz 52ft/s 171ft/s 5.4G 557ft 6.3s 5s
OK AeroTech G339 61.0oz 105ft/s 202ft/s 21.3G 582ft 6.0s 6s
OK Loki G94 63.1oz 57ft/s 183ft/s 6.5G 600ft 6.5s 5s
OK Loki G66 63.4oz 53ft/s 181ft/s 5.6G 675ft 7.1s 5s
OK Cesaroni G185 61.2oz 72ft/s 220ft/s 11.2G 697ft 6.7s 6s
OK Cesaroni G115 61.5oz 55ft/s 225ft/s 6.7G 792ft 7.4s 6s
OK Loki H100 66.4oz 55ft/s 281ft/s 7.1G 1,272ft 9.2s 7s
warningsW AeroTech H283 63.3oz 95ft/s 340ft/s 18.1G 1,393ft 9.1s 8s
OK AeroTech H148 65.5oz 69ft/s 325ft/s 9.7G 1,457ft 9.6s 8s
OK AeroTech H130 63.0oz 82ft/s 322ft/s 13.8G 1,494ft 9.6s 8s
OK AeroTech H123 64.3oz 59ft/s 320ft/s 7.3G 1,605ft 10.2s 8s
OK AeroTech H100 63.8oz 55ft/s 325ft/s 6.4G 1,610ft 10.3s 8s
OK Loki H90 66.4oz 59ft/s 314ft/s 6.9G 1,620ft 10.4s 8s
OK AeroTech H669 63.5oz 147ft/s 396ft/s 61.7G 1,621ft 9.5s 9s
OK Cesaroni H123 65.1oz 54ft/s 353ft/s 7.3G 1,666ft 10.4s 8s
OK Loki H144 66.5oz 79ft/s 352ft/s 12.5G 1,692ft 10.1s 9s
OK Loki H125 66.7oz 71ft/s 340ft/s 10.1G 1,692ft 10.3s 8s
OK Cesaroni H143 66.8oz 56ft/s 364ft/s 7.9G 1,710ft 10.5s 9s
OK AeroTech H219 63.8oz 85ft/s 386ft/s 15.5G 1,734ft 10.1s 9s
OK AeroTech H242 63.9oz 77ft/s 392ft/s 12.4G 1,831ft 10.4s 9s
OK Loki H160 66.4oz 86ft/s 382ft/s 14.6G 1,857ft 10.4s 9s
OK Cesaroni H120 65.0oz 59ft/s 383ft/s 7.2G 1,935ft 11.1s 9s
OK Cesaroni H400 64.6oz 102ft/s 442ft/s 23.9G 1,940ft 10.4s 10s
OK Cesaroni H110 66.1oz 51ft/s 378ft/s 5.8G 1,969ft 11.4s 9s
OK Cesaroni H125 64.9oz 56ft/s 399ft/s 7.5G 2,000ft 11.2s 9s
OK Cesaroni H152 65.1oz 66ft/s 421ft/s 10.7G 2,125ft 11.3s 10s
OK Cesaroni H100 66.1oz 52ft/s 392ft/s 5.4G 2,128ft 11.9s 9s
OK AeroTech H178 66.0oz 63ft/s 441ft/s 10.9G 2,168ft 11.3s 10s
OK Cesaroni H225 61.4oz 84ft/s 468ft/s 14.1G 2,193ft 11.1s 10s
OK AeroTech I218 67.7oz 84ft/s 483ft/s 14.2G 2,434ft 11.7s 10s
OK AeroTech H550 66.0oz 133ft/s 535ft/s 34.6G 2,452ft 11.3s 11s
OK AeroTech H550 65.7oz 134ft/s 541ft/s 34.9G 2,463ft 11.3s 11s
OK AeroTech H170 66.2oz 68ft/s 472ft/s 10.2G 2,466ft 12.0s 10s
warningsW Cesaroni H565 67.4oz 126ft/s 542ft/s 34.1G 2,481ft 11.4s 11s
OK AeroTech I180 68.2oz 96ft/s 461ft/s 18.1G 2,490ft 11.8s 10s
OK AeroTech H999 66.3oz 176ft/s 560ft/s 86.3G 2,509ft 11.3s 11s
OK AeroTech I161 67.5oz 72ft/s 472ft/s 10.7G 2,563ft 12.2s 10s
OK AeroTech I175 66.9oz 81ft/s 471ft/s 12.6G 2,572ft 12.2s 10s
OK Cesaroni I180 68.5oz 64ft/s 500ft/s 10.3G 2,604ft 12.3s 10s
OK AeroTech I140 67.2oz 64ft/s 468ft/s 8.7G 2,640ft 12.5s 10s
OK AeroTech I225 71.7oz 71ft/s 515ft/s 13.1G 2,710ft 12.3s 11s
OK AeroTech I245 67.5oz 102ft/s 528ft/s 21.2G 2,731ft 12.1s 11s
OK AeroTech I357 66.7oz 99ft/s 547ft/s 19.5G 2,757ft 12.1s 11s
OK Cesaroni I212 71.4oz 69ft/s 532ft/s 12.1G 2,767ft 12.5s 11s
OK AeroTech I154 72.0oz 58ft/s 475ft/s 7.4G 2,888ft 13.4s 10s
OK Cesaroni I566 68.2oz 118ft/s 620ft/s 32.4G 2,907ft 12.2s 12s
OK Cesaroni I195 69.3oz 73ft/s 566ft/s 11.3G 3,091ft 13.1s 11s
OK Cesaroni I345 68.5oz 94ft/s 628ft/s 19.5G 3,137ft 12.8s 12s
OK AeroTech I285 72.0oz 90ft/s 604ft/s 18.0G 3,163ft 12.9s 11s
OK Cesaroni I170 68.4oz 71ft/s 579ft/s 10.9G 3,194ft 13.3s 11s
OK Cesaroni I175 70.0oz 66ft/s 569ft/s 9.0G 3,202ft 13.4s 11s
OK Cesaroni I236 68.7oz 80ft/s 609ft/s 15.3G 3,264ft 13.2s 11s
OK AeroTech I1299 69.5oz 195ft/s 715ft/s 79.1G 3,289ft 12.6s 12s
OK AeroTech I211 70.6oz 84ft/s 593ft/s 15.4G 3,339ft 13.3s 11s
OK AeroTech I300 70.2oz 101ft/s 639ft/s 22.9G 3,378ft 13.2s 12s
OK AeroTech I59 71.8oz 59ft/s 370ft/s 7.5G 3,905ft 16.5s 8s

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 (46ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (35ft/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 (44ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (33ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (41ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (48ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (43ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (35ft/s)

G These simulations were run with a launch guide length of 8ft (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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