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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 52 motors that fit and appear to have enough thrust (678 motors didn't fit, 61 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:   Interceptor DD
Owner: Wayne Comfort
Body Diameter: 54.0mm
Dry Weight: 56.5oz
MMT Diameter: 29.0mm
MMT Length: 20.00in
CD: 0.50

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 G76 61.7oz 16m/s 50m/s 7.8G 175m 6.5s 5s
OK Cesaroni G250 61.5oz 22m/s 59m/s 16.0G 178m 6.2s 6s
OK Cesaroni G126 61.6oz 16m/s 58m/s 8.3G 186m 6.5s 6s
OK Cesaroni G131 63.6oz 15m/s 61m/s 8.0G 205m 6.9s 6s
OK AeroTech G125 60.9oz 16m/s 63m/s 8.3G 220m 7.0s 6s
OK Cesaroni G118 63.1oz 15m/s 76m/s 7.9G 319m 8.5s 7s
OK Cesaroni G125 63.4oz 16m/s 77m/s 8.2G 321m 8.5s 7s
OK AeroTech H165 63.6oz 18m/s 80m/s 9.9G 332m 8.5s 7s
OK Cesaroni H133 63.2oz 16m/s 79m/s 9.9G 338m 8.7s 7s
OK Cesaroni H175 65.2oz 18m/s 82m/s 12.5G 344m 8.7s 8s
OK Cesaroni H163 63.1oz 18m/s 84m/s 11.4G 359m 8.9s 8s
OK AeroTech G138 61.7oz 16m/s 85m/s 10.4G 367m 9.0s 8s
OK AeroTech H128 63.8oz 17m/s 84m/s 9.4G 370m 9.0s 8s
OK Cesaroni H123 64.5oz 15m/s 83m/s 7.2G 372m 9.2s 8s
OK Cesaroni H410 62.9oz 29m/s 91m/s 29.1G 379m 8.8s 8s
OK AeroTech H238 63.4oz 20m/s 88m/s 12.7G 388m 9.0s 8s
OK Cesaroni H118 64.7oz 16m/s 87m/s 8.4G 419m 9.6s 8s
OK KBA H130 81.5oz 16m/s 90m/s 8.7G 464m 10.3s 8s
OK Cesaroni H237 66.9oz 21m/s 103m/s 15.6G 496m 10.2s 9s
OK Cesaroni H151 64.9oz 19m/s 100m/s 10.3G 503m 10.4s 9s
OK AeroTech H220 65.3oz 21m/s 104m/s 15.9G 506m 10.2s 9s
OK AeroTech H210 65.2oz 20m/s 105m/s 13.6G 519m 10.4s 9s
OK Cesaroni H135 65.4oz 16m/s 102m/s 8.1G 533m 10.8s 9s
OK Cesaroni H160 66.1oz 17m/s 106m/s 9.3G 543m 10.8s 9s
OK Cesaroni H170 64.7oz 20m/s 106m/s 12.2G 549m 10.7s 9s
OK AeroTech H182 63.8oz 18m/s 109m/s 10.4G 559m 10.9s 10s
OK AeroTech H180 65.4oz 20m/s 112m/s 13.2G 588m 11.1s 10s
OK AeroTech H135 64.0oz 16m/s 106m/s 7.7G 588m 11.4s 9s
OK AeroTech H250 65.5oz 25m/s 117m/s 16.8G 611m 11.1s 10s
OK KBA H225 67.6oz 18m/s 118m/s 14.1G 629m 11.4s 10s
OK AeroTech H195 63.4oz 21m/s 121m/s 13.4G 658m 11.6s 10s
OK Cesaroni H295 68.6oz 23m/s 125m/s 19.4G 674m 11.7s 11s
OK Cesaroni H180 67.6oz 21m/s 122m/s 13.4G 691m 12.0s 10s
OK Cesaroni H194 66.5oz 21m/s 124m/s 14.3G 701m 12.0s 11s
OK Cesaroni H200 66.2oz 21m/s 126m/s 14.8G 725m 12.1s 11s
OK Cesaroni H140 66.3oz 20m/s 123m/s 12.3G 742m 12.5s 10s
OK Cesaroni H340 70.3oz 26m/s 140m/s 21.7G 803m 12.5s 12s
OK Cesaroni H255 64.7oz 24m/s 138m/s 19.9G 805m 12.5s 11s
OK Cesaroni H399 66.9oz 29m/s 145m/s 28.3G 826m 12.6s 12s
OK Cesaroni H159 68.6oz 17m/s 137m/s 8.8G 848m 13.3s 11s
OK Cesaroni H226 69.2oz 23m/s 143m/s 17.2G 882m 13.2s 12s
OK AeroTech H268 69.1oz 23m/s 148m/s 16.3G 900m 13.3s 12s
OK Cesaroni H160 67.8oz 22m/s 140m/s 15.8G 918m 13.6s 11s
OK Cesaroni H233 68.1oz 23m/s 149m/s 17.0G 925m 13.5s 12s
OK Cesaroni H255 67.7oz 24m/s 154m/s 20.9G 955m 13.7s 12s
OK AeroTech I200 69.1oz 22m/s 149m/s 14.8G 964m 13.8s 12s
OK Cesaroni I204 68.8oz 23m/s 160m/s 17.7G 1,064m 14.4s 13s
OK AeroTech I205 67.6oz 21m/s 162m/s 18.4G 1,079m 14.5s 13s
OK Cesaroni I224 69.6oz 25m/s 173m/s 21.4G 1,195m 15.1s 13s
OK Cesaroni I243 70.6oz 25m/s 176m/s 21.2G 1,198m 15.1s 13s
OK KBA J520 82.0oz 30m/s 274m/s 30.3G 2,039m 18.7s 17s
warningsW,D Estes G80 60.9oz 5:1 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 (2m/s)
failedG AeroTech E23 speed at end of launch guide too slow (6m/s)
failedG AeroTech E16 speed at end of launch guide too slow (4m/s)
failedG AeroTech F23 speed at end of launch guide too slow (7m/s)
failedG Cesaroni F36 speed at end of launch guide too slow (7m/s)
failedG AeroTech F27 speed at end of launch guide too slow (6m/s)
failed5 Estes F15 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech F37 speed at end of launch guide too slow (8m/s)
failedG AeroTech F62 speed at end of launch guide too slow (10m/s)
failedG Cesaroni F36 speed at end of launch guide too slow (7m/s)
failedG AeroTech F20 speed at end of launch guide too slow (7m/s)
failedG Cesaroni F32 speed at end of launch guide too slow (6m/s)
failedG AeroTech F42 speed at end of launch guide too slow (10m/s)
failedG Cesaroni F29 speed at end of launch guide too slow (6m/s)
failedG Cesaroni F31 speed at end of launch guide too slow (6m/s)
failedA Cesaroni F120 rocket doesn't reach a safe altitude (46m)
failedG Cesaroni F59 speed at end of launch guide too slow (10m/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (2:1)
failedG AeroTech F26 speed at end of launch guide too slow (6m/s)
failedG AeroTech F22 speed at end of launch guide too slow (5m/s)
failedG AeroTech F52 speed at end of launch guide too slow (11m/s)
failedG Apogee F10 speed at end of launch guide too slow (2m/s)
failedG AeroTech F50 speed at end of launch guide too slow (11m/s)
failedG Estes F50 speed at end of launch guide too slow (11m/s)
failedG AeroTech F25 speed at end of launch guide too slow (9m/s)
failedG AeroTech F40 speed at end of launch guide too slow (10m/s)
failedG AeroTech G54 speed at end of launch guide too slow (11m/s)
failedG AeroTech G104 speed at end of launch guide too slow (14m/s)
failedG AeroTech G74 speed at end of launch guide too slow (12m/s)
failedG Cesaroni G88 speed at end of launch guide too slow (12m/s)
failedG AeroTech G38 speed at end of launch guide too slow (8m/s)
failedG AeroTech G53 speed at end of launch guide too slow (12m/s)
failedG Cesaroni G80 speed at end of launch guide too slow (12m/s)
failedG Estes G40 speed at end of launch guide too slow (10m/s)
failedG AeroTech G77 speed at end of launch guide too slow (12m/s)
failedG AeroTech G77 speed at end of launch guide too slow (11m/s)
failedG Cesaroni G83 speed at end of launch guide too slow (13m/s)
failedG Cesaroni G57 speed at end of launch guide too slow (11m/s)
failedG Cesaroni G68 speed at end of launch guide too slow (11m/s)
failedG AeroTech G79 speed at end of launch guide too slow (11m/s)
failedG AeroTech G79 speed at end of launch guide too slow (12m/s)
failedG AeroTech G78 speed at end of launch guide too slow (13m/s)
failedG AeroTech G40 speed at end of launch guide too slow (10m/s)
failedG AeroTech G25 speed at end of launch guide too slow (7m/s)
failedG AeroTech G64 speed at end of launch guide too slow (13m/s)
failedG AeroTech G75 speed at end of launch guide too slow (13m/s)
failedG AeroTech G80 speed at end of launch guide too slow (13m/s)
failedG AeroTech G75 speed at end of launch guide too slow (11m/s)
failedG Cesaroni G106 speed at end of launch guide too slow (13m/s)
failedG KBA G82 speed at end of launch guide too slow (11m/s)
failedG KBA G135 speed at end of launch guide too slow (14m/s)
failedG Cesaroni G33 speed at end of launch guide too slow (7m/s)
failedG Cesaroni G54 speed at end of launch guide too slow (14m/s)
failedG Cesaroni H90 speed at end of launch guide too slow (14m/s)
failedG Cesaroni H54 speed at end of launch guide too slow (12m/s)
failedG Cesaroni H87 speed at end of launch guide too slow (13m/s)
failedG AeroTech H115 speed at end of launch guide too slow (14m/s)
failedG AeroTech H97 speed at end of launch guide too slow (13m/s)
failedG Cesaroni H42 speed at end of launch guide too slow (9m/s)
failedG RATT H70 speed at end of launch guide too slow (14m/s)
failedG Cesaroni H53 speed at end of launch guide too slow (11m/s)

G These simulations were run with a launch guide length of 2m (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.

A The minimum altitude check is used to ensure that the rocket flies high enough to ensure time for a safe recovery. In addition, many barometric altimeters require a minimum altitude to detect lift-off. (The minimum altitude is 10m or 33ft for an A motor and doubles for each impulse class).

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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