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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 61 motors that fit and appear to have enough thrust (703 motors didn't fit, 27 motors failed safety checks). 86 motor had thrust curves available and 171 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:   PML Miranda
Owner: Michael Monteith
Body Diameter: 3.00in
Dry Weight: 3.40lb
MMT Diameter: 29.0mm
MMT Length: 9.42in
CD: 0.60

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 F50 3.59lb 51ft/s 99ft/s 3.5G 216ft 4.2s 3s
OK AeroTech F52 3.67lb 52ft/s 101ft/s 3.8G 231ft 4.3s 3s
warningsW Estes F50 3.58lb 54ft/s 112ft/s 3.9G 271ft 4.6s 3s
OK AeroTech G54 3.70lb 54ft/s 113ft/s 4.0G 279ft 4.7s 3s
OK Cesaroni G88 3.74lb 60ft/s 133ft/s 6.0G 317ft 4.8s 4s
OK AeroTech G74 3.59lb 59ft/s 136ft/s 4.7G 336ft 5.1s 4s
OK AeroTech G104 3.70lb 68ft/s 137ft/s 6.4G 338ft 4.9s 4s
OK AeroTech G53 3.72lb 54ft/s 124ft/s 4.2G 352ft 5.3s 3s
OK Cesaroni G80 3.72lb 58ft/s 148ft/s 5.0G 389ft 5.4s 4s
warningsW Estes G40 3.67lb 48ft/s 126ft/s 3.5G 396ft 5.7s 3s
OK AeroTech G40 3.67lb 48ft/s 126ft/s 3.5G 396ft 5.7s 3s
OK AeroTech G77 3.76lb 55ft/s 154ft/s 4.6G 431ft 5.8s 4s
OK AeroTech G77 3.67lb 58ft/s 161ft/s 5.1G 456ft 5.8s 5s
OK AeroTech G79 3.67lb 53ft/s 155ft/s 4.0G 471ft 6.1s 4s
OK Cesaroni G68 3.74lb 51ft/s 155ft/s 4.5G 472ft 6.1s 4s
OK Cesaroni G57 3.72lb 54ft/s 148ft/s 4.3G 473ft 6.1s 4s
OK AeroTech G79 3.75lb 60ft/s 163ft/s 5.0G 485ft 6.0s 5s
OK Cesaroni G83 3.72lb 61ft/s 165ft/s 5.0G 489ft 6.0s 5s
OK AeroTech G76 3.72lb 72ft/s 168ft/s 8.1G 565ft 6.3s 4s
OK Cesaroni G250 3.71lb 107ft/s 200ft/s 16.6G 567ft 6.0s 6s
OK AeroTech G64 3.73lb 64ft/s 164ft/s 5.5G 574ft 6.5s 4s
OK Cesaroni G126 3.72lb 76ft/s 195ft/s 8.6G 594ft 6.3s 5s
OK AeroTech G75 3.69lb 60ft/s 179ft/s 5.1G 600ft 6.6s 5s
OK AeroTech G78 3.68lb 61ft/s 187ft/s 5.3G 630ft 6.7s 5s
OK Cesaroni G131 3.84lb 72ft/s 205ft/s 8.1G 650ft 6.6s 6s
OK AeroTech G125 3.68lb 76ft/s 214ft/s 8.5G 690ft 6.8s 6s
OK AeroTech G80 3.68lb 63ft/s 197ft/s 5.4G 693ft 7.0s 5s
OK Cesaroni G106 3.81lb 64ft/s 219ft/s 6.7G 748ft 7.2s 6s
OK KBA G82 3.91lb 55ft/s 207ft/s 5.0G 752ft 7.4s 5s
OK AeroTech G75 3.91lb 51ft/s 207ft/s 3.7G 800ft 7.9s 5s
OK KBA G135 3.90lb 72ft/s 234ft/s 8.2G 801ft 7.3s 6s
OK Cesaroni G54 3.83lb 63ft/s 198ft/s 6.1G 909ft 8.3s 5s
OK Cesaroni H54 3.86lb 55ft/s 205ft/s 4.9G 956ft 8.6s 5s
OK Cesaroni G118 3.81lb 72ft/s 255ft/s 8.2G 962ft 8.0s 7s
OK Cesaroni G125 3.83lb 77ft/s 257ft/s 8.5G 968ft 8.0s 7s
OK AeroTech H165 3.84lb 85ft/s 269ft/s 10.2G 992ft 7.9s 7s
OK Cesaroni H133 3.82lb 79ft/s 264ft/s 10.3G 1,011ft 8.1s 7s
OK Cesaroni H87 3.85lb 62ft/s 249ft/s 6.5G 1,013ft 8.5s 7s
OK Cesaroni H90 3.76lb 68ft/s 252ft/s 8.3G 1,018ft 8.3s 6s
OK Cesaroni H175 3.94lb 84ft/s 276ft/s 12.6G 1,023ft 8.0s 7s
OK Cesaroni H163 3.81lb 86ft/s 280ft/s 11.8G 1,060ft 8.2s 7s
OK AeroTech G138 3.73lb 77ft/s 286ft/s 10.5G 1,079ft 8.3s 7s
OK AeroTech H128 3.85lb 83ft/s 279ft/s 9.7G 1,089ft 8.3s 7s
OK Cesaroni H123 3.90lb 71ft/s 277ft/s 7.2G 1,099ft 8.5s 7s
OK Cesaroni H410 3.80lb 142ft/s 306ft/s 30.0G 1,099ft 8.0s 8s
OK AeroTech H238 3.83lb 98ft/s 295ft/s 13.1G 1,129ft 8.3s 7s
OK AeroTech H115 3.85lb 69ft/s 278ft/s 6.3G 1,131ft 8.7s 7s
OK AeroTech H97 4.01lb 61ft/s 272ft/s 5.2G 1,150ft 8.9s 7s
OK Cesaroni H118 3.91lb 75ft/s 288ft/s 8.8G 1,211ft 8.8s 7s
OK AeroTech H220 3.95lb 103ft/s 345ft/s 16.5G 1,413ft 9.1s 8s
OK Cesaroni H151 3.92lb 86ft/s 330ft/s 10.6G 1,415ft 9.3s 8s
OK AeroTech H210 3.94lb 98ft/s 350ft/s 13.9G 1,445ft 9.3s 8s
OK Cesaroni H135 3.95lb 78ft/s 337ft/s 8.4G 1,491ft 9.7s 8s
OK Cesaroni H170 3.91lb 92ft/s 350ft/s 12.6G 1,519ft 9.5s 8s
OK AeroTech H182 3.86lb 86ft/s 363ft/s 10.3G 1,537ft 9.6s 8s
OK AeroTech H180 3.96lb 95ft/s 369ft/s 13.6G 1,603ft 9.7s 8s
OK AeroTech H135 3.87lb 75ft/s 345ft/s 8.0G 1,623ft 10.1s 8s
OK AeroTech H250 3.96lb 114ft/s 389ft/s 17.3G 1,649ft 9.7s 9s
OK AeroTech H195 3.83lb 101ft/s 400ft/s 13.9G 1,749ft 10.1s 9s
OK Cesaroni H255 3.91lb 115ft/s 454ft/s 20.6G 2,042ft 10.6s 9s
warningsW,D Estes G80 3.68lb 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 (10ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (27ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (15ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (35ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (30ft/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 (37ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (36ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (31ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (45ft/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 (31ft/s)
failedA Cesaroni F120 rocket doesn't reach a safe altitude (158ft)
failedA Cesaroni F59 rocket doesn't reach a safe altitude (147ft)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (2:1)
failedG AeroTech F26 speed at end of launch guide too slow (29ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (25ft/s)
failed5 Apogee F10 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech F25 speed at end of launch guide too slow (40ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (37ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (40ft/s)

G These simulations were run with a launch guide length of 12ft (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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