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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 77 motors that fit and appear to have enough thrust (678 motors didn't fit, 36 motors failed safety checks). 111 motor had thrust curves available and 220 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:   Sirius Rocketry Interrogator G
Owner: David J. Miller
Body Diameter: 2.60in
Dry Weight: 22.0oz
MMT Diameter: 29.0mm
MMT Length: 18.00in
CD: 0.60
Web Site: http://www.siriusrocketry.com

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 F120 25.7oz 64ft/s 236ft/s 19.1G 656ft 6.3s 6s
OK AeroTech F50 25.0oz 49ft/s 264ft/s 9.4G 893ft 7.4s 6s
OK AeroTech F52 26.3oz 49ft/s 262ft/s 9.8G 919ft 7.5s 6s
warningsW Estes F50 24.9oz 48ft/s 291ft/s 10.3G 1,037ft 7.8s 6s
OK Cesaroni G88 27.4oz 53ft/s 319ft/s 14.3G 1,081ft 7.9s 7s
OK AeroTech G104 26.8oz 61ft/s 326ft/s 15.3G 1,116ft 7.9s 7s
OK AeroTech G74 25.1oz 50ft/s 343ft/s 12.0G 1,173ft 8.2s 7s
OK AeroTech G53 27.1oz 51ft/s 306ft/s 10.5G 1,204ft 8.5s 7s
OK AeroTech G77 26.3oz 51ft/s 389ft/s 12.4G 1,395ft 8.8s 8s
OK AeroTech G79 27.5oz 51ft/s 382ft/s 11.9G 1,431ft 8.9s 7s
OK Cesaroni G83 27.1oz 54ft/s 388ft/s 12.3G 1,442ft 8.9s 8s
OK Cesaroni G57 27.1oz 48ft/s 357ft/s 10.7G 1,467ft 9.2s 7s
OK Cesaroni G250 27.0oz 88ft/s 455ft/s 37.7G 1,483ft 8.6s 8s
OK AeroTech G76 27.2oz 69ft/s 383ft/s 19.0G 1,558ft 9.1s 7s
OK Cesaroni G126 27.1oz 65ft/s 444ft/s 20.1G 1,570ft 9.0s 8s
OK AeroTech G64 27.3oz 58ft/s 378ft/s 13.3G 1,605ft 9.4s 7s
OK Cesaroni G131 29.1oz 61ft/s 456ft/s 17.3G 1,637ft 9.2s 8s
OK AeroTech G75 26.6oz 53ft/s 416ft/s 12.6G 1,641ft 9.4s 7s
OK AeroTech G78 26.4oz 52ft/s 437ft/s 12.8G 1,677ft 9.4s 8s
OK AeroTech G125 26.4oz 63ft/s 491ft/s 19.3G 1,714ft 9.2s 8s
OK AeroTech G80 26.5oz 56ft/s 453ft/s 13.1G 1,771ft 9.6s 8s
OK Cesaroni G106 28.6oz 52ft/s 487ft/s 15.5G 1,822ft 9.8s 8s
OK KBA G135 30.0oz 55ft/s 508ft/s 17.8G 1,863ft 9.7s 9s
OK AeroTech H165 29.1oz 72ft/s 576ft/s 22.7G 2,076ft 10.0s 9s
OK Cesaroni G125 28.9oz 65ft/s 553ft/s 19.1G 2,080ft 10.1s 9s
OK Cesaroni G118 28.6oz 59ft/s 550ft/s 18.6G 2,091ft 10.1s 9s
OK Cesaroni H175 30.7oz 73ft/s 585ft/s 25.6G 2,095ft 10.0s 9s
OK Cesaroni H410 28.4oz 111ft/s 663ft/s 65.7G 2,128ft 9.7s 9s
OK Cesaroni H133 28.7oz 69ft/s 565ft/s 23.0G 2,130ft 10.1s 9s
OK Cesaroni G54 28.8oz 57ft/s 428ft/s 14.1G 2,155ft 10.7s 8s
OK Cesaroni H163 28.6oz 71ft/s 602ft/s 26.3G 2,163ft 10.1s 9s
OK RATT H70 34.4oz 57ft/s 453ft/s 13.3G 2,174ft 10.8s 8s
OK Cesaroni H90 27.7oz 60ft/s 541ft/s 19.1G 2,196ft 10.4s 9s
OK AeroTech G138 27.2oz 63ft/s 631ft/s 21.9G 2,199ft 10.1s 9s
OK AeroTech H128 29.3oz 70ft/s 590ft/s 21.5G 2,199ft 10.2s 9s
OK AeroTech H238 28.9oz 83ft/s 624ft/s 28.6G 2,211ft 10.0s 9s
OK Cesaroni H87 29.2oz 52ft/s 531ft/s 14.8G 2,211ft 10.6s 9s
OK Cesaroni H123 30.0oz 58ft/s 584ft/s 15.7G 2,244ft 10.5s 9s
OK Cesaroni H54 29.4oz 52ft/s 441ft/s 11.4G 2,249ft 11.0s 8s
OK AeroTech H115 29.2oz 56ft/s 587ft/s 14.2G 2,288ft 10.5s 9s
OK AeroTech H97 31.8oz 52ft/s 558ft/s 11.5G 2,350ft 10.9s 9s
OK Cesaroni H118 30.2oz 65ft/s 590ft/s 19.2G 2,365ft 10.6s 9s
OK Cesaroni H237 32.4oz 84ft/s 702ft/s 30.6G 2,465ft 10.5s 10s
OK AeroTech H220 30.8oz 90ft/s 702ft/s 34.8G 2,501ft 10.5s 10s
OK AeroTech H210 30.7oz 78ft/s 714ft/s 29.3G 2,546ft 10.6s 10s
OK KBA H130 47.0oz 60ft/s 511ft/s 15.8G 2,548ft 11.7s 10s
OK Cesaroni H151 30.4oz 70ft/s 666ft/s 23.1G 2,552ft 10.7s 9s
OK Cesaroni H170 30.2oz 78ft/s 706ft/s 27.3G 2,641ft 10.8s 9s
OK AeroTech H182 29.3oz 68ft/s 752ft/s 22.3G 2,646ft 10.7s 10s
OK Cesaroni H160 31.6oz 67ft/s 702ft/s 20.1G 2,652ft 10.9s 10s
OK Cesaroni H135 30.9oz 67ft/s 672ft/s 18.3G 2,662ft 11.0s 9s
OK AeroTech H180 30.9oz 81ft/s 737ft/s 28.8G 2,699ft 10.8s 10s
OK AeroTech H250 31.0oz 92ft/s 779ft/s 36.7G 2,721ft 10.8s 10s
OK AeroTech H195 28.9oz 85ft/s 811ft/s 30.6G 2,807ft 10.8s 10s
OK KBA H225 33.1oz 70ft/s 778ft/s 28.2G 2,815ft 11.1s 10s
OK Cesaroni H295 34.1oz 92ft/s 819ft/s 36.7G 2,821ft 11.0s 10s
OK AeroTech H135 29.5oz 63ft/s 680ft/s 17.8G 2,843ft 11.3s 9s
OK Cesaroni H180 33.1oz 83ft/s 765ft/s 28.5G 2,944ft 11.3s 10s
OK Cesaroni H194 32.0oz 80ft/s 788ft/s 30.7G 2,948ft 11.2s 10s
OK Cesaroni H200 31.7oz 84ft/s 799ft/s 32.0G 2,993ft 11.2s 10s
OK Cesaroni H340 35.8oz 104ft/s 888ft/s 43.8G 3,045ft 11.2s 10s
OK Cesaroni H255 30.2oz 101ft/s 893ft/s 43.9G 3,068ft 11.1s 10s
OK Cesaroni H399 32.4oz 122ft/s 947ft/s 59.8G 3,076ft 11.1s 10s
OK Cesaroni H140 31.8oz 78ft/s 748ft/s 26.8G 3,118ft 11.6s 10s
OK Cesaroni H226 34.7oz 87ft/s 859ft/s 35.4G 3,275ft 11.6s 10s
OK AeroTech H268 34.6oz 94ft/s 905ft/s 33.4G 3,296ft 11.6s 10s
OK Cesaroni H159 34.1oz 68ft/s 812ft/s 18.8G 3,319ft 11.9s 10s
OK Cesaroni H233 33.6oz 88ft/s 902ft/s 35.5G 3,334ft 11.6s 10s
OK Cesaroni H255 33.2oz 98ft/s 941ft/s 43.8G 3,368ft 11.6s 10s
OK Cesaroni H160 33.3oz 87ft/s 814ft/s 33.3G 3,433ft 11.9s 10s
OK AeroTech I200 34.6oz 85ft/s 869ft/s 30.6G 3,445ft 11.8s 10s
OK AeroTech I205 33.1oz 80ft/s 945ft/s 38.6G 3,587ft 11.8s 10s
OK Cesaroni I204 34.3oz 86ft/s 917ft/s 36.5G 3,593ft 11.9s 10s
OK Cesaroni I243 36.1oz 93ft/s 979ft/s 42.6G 3,805ft 12.1s 10s
OK Cesaroni I224 35.1oz 103ft/s 984ft/s 43.5G 3,812ft 12.1s 10s
OK KBA J520 47.5oz 108ft/s 1,411ft/s 53.1G 5,151ft 13.6s 12s
warningsW,D Estes G80 26.4oz 11:1 thrust/weight ratio (no data)

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

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 Estes E16 speed at end of launch guide too slow (25ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (33ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (28ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (36ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (32ft/s)
failedG Estes F15 speed at end of launch guide too slow (23ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (32ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (34ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (30ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni F59 speed at end of launch guide too slow (46ft/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (4:1)
failedG AeroTech F26 speed at end of launch guide too slow (32ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (27ft/s)
failedG Apogee F10 speed at end of launch guide too slow (25ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (41ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G80 speed at end of launch guide too slow (47ft/s)
failedG Estes G40 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (44ft/s)
failedG KBA G82 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (42ft/s)

G These simulations were run with a launch guide length of 4ft (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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