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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 (694 motors didn't fit, 20 motors failed safety checks). 95 motor had thrust curves available and 184 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:   Estes Scion
Owner: Richard Holmes
Body Diameter: 3.00in
Dry Weight: 21.5oz
MMT Diameter: 29.0mm
MMT Length: 12.00in
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 AeroTech F62 25.3oz 55ft/s 209ft/s 8.1G 590ft 6.1s 5s
OK Cesaroni F120 25.2oz 81ft/s 240ft/s 19.4G 633ft 6.1s 6s
OK AeroTech F42 24.2oz 58ft/s 211ft/s 9.2G 650ft 6.4s 5s
OK Cesaroni F59 25.0oz 57ft/s 227ft/s 9.2G 650ft 6.4s 5s
OK AeroTech F50 24.5oz 60ft/s 265ft/s 9.7G 848ft 7.1s 6s
OK AeroTech F25 24.7oz 51ft/s 223ft/s 7.4G 867ft 7.5s 5s
OK AeroTech F52 25.8oz 60ft/s 263ft/s 10.0G 874ft 7.3s 6s
OK AeroTech F40 26.0oz 56ft/s 255ft/s 8.4G 942ft 7.6s 6s
warningsW Estes F50 24.4oz 62ft/s 291ft/s 10.5G 975ft 7.5s 6s
OK AeroTech G54 26.3oz 60ft/s 285ft/s 10.1G 979ft 7.6s 6s
OK Cesaroni G88 26.9oz 65ft/s 322ft/s 14.6G 1,014ft 7.6s 7s
OK AeroTech G104 26.3oz 78ft/s 328ft/s 15.7G 1,044ft 7.5s 7s
OK AeroTech G38 25.9oz 48ft/s 267ft/s 6.3G 1,073ft 8.3s 6s
OK AeroTech G74 24.6oz 63ft/s 344ft/s 12.2G 1,092ft 7.8s 7s
OK AeroTech G53 26.6oz 62ft/s 305ft/s 10.7G 1,127ft 8.1s 6s
OK Cesaroni G80 26.6oz 61ft/s 356ft/s 12.4G 1,165ft 8.0s 7s
OK AeroTech G77 27.3oz 57ft/s 367ft/s 10.7G 1,247ft 8.4s 7s
warningsW Estes G40 25.8oz 57ft/s 317ft/s 9.2G 1,259ft 8.5s 6s
OK AeroTech G40 25.8oz 57ft/s 317ft/s 9.2G 1,259ft 8.5s 6s
OK AeroTech G77 25.8oz 62ft/s 389ft/s 12.5G 1,285ft 8.3s 7s
OK AeroTech G79 27.0oz 63ft/s 381ft/s 12.1G 1,320ft 8.5s 7s
OK Cesaroni G83 26.6oz 67ft/s 387ft/s 12.5G 1,329ft 8.4s 7s
OK Cesaroni G68 27.0oz 57ft/s 370ft/s 11.2G 1,339ft 8.6s 7s
OK AeroTech G79 25.9oz 55ft/s 377ft/s 10.1G 1,345ft 8.6s 7s
OK Cesaroni G250 26.5oz 108ft/s 460ft/s 38.2G 1,352ft 8.1s 8s
OK Cesaroni G57 26.6oz 62ft/s 354ft/s 10.9G 1,358ft 8.7s 7s
OK AeroTech G76 26.7oz 83ft/s 379ft/s 19.3G 1,432ft 8.6s 7s
OK Cesaroni G126 26.6oz 83ft/s 445ft/s 20.5G 1,434ft 8.5s 8s
OK AeroTech G64 26.8oz 72ft/s 374ft/s 13.5G 1,476ft 8.8s 6s
OK Cesaroni G131 28.6oz 77ft/s 457ft/s 17.6G 1,494ft 8.7s 8s
OK AeroTech G75 26.1oz 65ft/s 412ft/s 12.9G 1,501ft 8.8s 7s
OK AeroTech G78 25.9oz 66ft/s 434ft/s 13.0G 1,528ft 8.8s 7s
OK AeroTech G125 25.9oz 80ft/s 491ft/s 19.5G 1,552ft 8.6s 8s
OK AeroTech G80 26.0oz 70ft/s 449ft/s 13.4G 1,610ft 9.0s 7s
OK Cesaroni G106 28.1oz 65ft/s 486ft/s 15.8G 1,655ft 9.1s 8s
OK KBA G135 29.5oz 70ft/s 507ft/s 17.9G 1,690ft 9.1s 8s
OK KBA G82 29.6oz 55ft/s 450ft/s 10.6G 1,698ft 9.5s 8s
OK AeroTech G75 29.7oz 54ft/s 448ft/s 8.5G 1,795ft 9.8s 7s
OK AeroTech H165 28.6oz 87ft/s 573ft/s 22.9G 1,862ft 9.3s 8s
OK Cesaroni G125 28.4oz 80ft/s 547ft/s 19.5G 1,872ft 9.4s 8s
OK Cesaroni H175 30.2oz 87ft/s 584ft/s 25.1G 1,881ft 9.3s 8s
OK Cesaroni G118 28.1oz 74ft/s 545ft/s 19.0G 1,882ft 9.5s 8s
OK Cesaroni H410 27.9oz 142ft/s 667ft/s 66.4G 1,890ft 9.0s 9s
OK Cesaroni H133 28.2oz 82ft/s 559ft/s 23.5G 1,913ft 9.4s 8s
OK Cesaroni H163 28.1oz 93ft/s 598ft/s 26.8G 1,936ft 9.4s 8s
OK Cesaroni G54 28.3oz 71ft/s 416ft/s 14.4G 1,961ft 10.1s 7s
OK AeroTech G138 26.7oz 80ft/s 627ft/s 21.7G 1,961ft 9.4s 8s
OK AeroTech H128 28.8oz 87ft/s 584ft/s 21.7G 1,970ft 9.5s 8s
OK AeroTech H238 28.4oz 100ft/s 620ft/s 28.8G 1,973ft 9.3s 8s
OK Cesaroni H90 27.2oz 76ft/s 530ft/s 19.5G 1,976ft 9.7s 8s
OK Cesaroni H87 28.7oz 68ft/s 520ft/s 15.1G 1,995ft 9.9s 8s
OK Cesaroni H123 29.5oz 72ft/s 578ft/s 16.0G 2,015ft 9.7s 8s
OK Cesaroni H54 28.9oz 63ft/s 428ft/s 11.6G 2,047ft 10.4s 7s
OK AeroTech H115 28.7oz 70ft/s 577ft/s 14.4G 2,050ft 9.8s 8s
OK AeroTech H97 31.3oz 65ft/s 547ft/s 11.6G 2,117ft 10.2s 8s
OK Cesaroni H118 29.7oz 82ft/s 579ft/s 19.6G 2,120ft 9.9s 8s
OK Cesaroni H237 31.9oz 101ft/s 698ft/s 29.8G 2,190ft 9.7s 9s
OK AeroTech H220 30.3oz 109ft/s 697ft/s 35.4G 2,220ft 9.7s 9s
OK AeroTech H210 30.2oz 96ft/s 708ft/s 29.4G 2,257ft 9.8s 9s
OK Cesaroni H151 29.9oz 92ft/s 654ft/s 23.5G 2,271ft 9.9s 9s
OK KBA H130 46.5oz 72ft/s 506ft/s 16.0G 2,333ft 11.1s 9s
OK AeroTech H182 28.8oz 89ft/s 740ft/s 22.5G 2,339ft 9.9s 9s
OK Cesaroni H170 29.7oz 95ft/s 696ft/s 27.8G 2,342ft 10.0s 9s
OK Cesaroni H160 31.1oz 86ft/s 691ft/s 20.5G 2,357ft 10.1s 9s
OK Cesaroni H135 30.4oz 85ft/s 657ft/s 18.6G 2,370ft 10.2s 9s
OK AeroTech H180 30.4oz 98ft/s 726ft/s 29.2G 2,390ft 10.0s 9s
OK AeroTech H250 30.5oz 115ft/s 770ft/s 37.2G 2,402ft 9.9s 9s
OK AeroTech H195 28.4oz 106ft/s 795ft/s 31.2G 2,469ft 9.9s 9s
OK KBA H225 32.6oz 84ft/s 770ft/s 28.1G 2,490ft 10.3s 9s
OK AeroTech H135 29.0oz 80ft/s 661ft/s 18.1G 2,528ft 10.5s 8s
OK Cesaroni H194 31.5oz 98ft/s 772ft/s 31.2G 2,603ft 10.3s 9s
OK Cesaroni H200 31.2oz 103ft/s 783ft/s 32.5G 2,640ft 10.3s 9s
OK Cesaroni H53 31.6oz 53ft/s 502ft/s 9.7G 2,679ft 11.8s 7s
OK Cesaroni H255 29.7oz 120ft/s 877ft/s 44.6G 2,691ft 10.2s 9s
OK Cesaroni H140 31.3oz 94ft/s 726ft/s 27.3G 2,763ft 10.7s 9s
OK AeroTech I205 32.6oz 98ft/s 914ft/s 39.2G 3,148ft 10.8s 9s
warningsW,D Estes G80 25.9oz 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 (30ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (41ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (34ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (42ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (40ft/s)
failedG Estes F15 speed at end of launch guide too slow (28ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (43ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (40ft/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 (39ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (34ft/s)
failedG Apogee F10 speed at end of launch guide too slow (31ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (45ft/s)

G These simulations were run with a launch guide length of 6ft (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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