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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 44 motors that fit and appear to have enough thrust (686 motors didn't fit, 70 motors failed safety checks). 112 motor had thrust curves available and 226 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:   Plumb Plum
Owner: Kevin Katz
Body Diameter: 3.10in
Dry Weight: 64.0oz
MMT Diameter: 29.0mm
MMT Length: 20.00in
CD: 0.75

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 G250 69.0oz 69ft/s 170ft/s 14.1G 424ft 5.3s 5s
OK Cesaroni G126 69.1oz 48ft/s 163ft/s 7.3G 441ft 5.5s 5s
OK Cesaroni G125 70.9oz 50ft/s 217ft/s 7.2G 733ft 7.1s 6s
OK AeroTech H165 71.1oz 56ft/s 227ft/s 8.7G 754ft 7.0s 6s
OK Cesaroni H133 70.7oz 52ft/s 223ft/s 8.7G 767ft 7.2s 6s
OK Cesaroni H175 72.7oz 56ft/s 235ft/s 10.8G 782ft 7.1s 6s
OK Cesaroni H163 70.6oz 55ft/s 237ft/s 10.1G 808ft 7.3s 6s
OK AeroTech H128 71.3oz 54ft/s 236ft/s 8.2G 831ft 7.4s 6s
OK Cesaroni H410 70.4oz 90ft/s 262ft/s 25.7G 846ft 7.1s 7s
OK AeroTech H238 70.9oz 64ft/s 251ft/s 11.1G 866ft 7.4s 6s
OK Cesaroni H118 72.2oz 48ft/s 243ft/s 7.5G 928ft 7.8s 6s
OK Cesaroni H237 74.4oz 63ft/s 295ft/s 13.4G 1,083ft 8.1s 7s
OK KBA H130 89.0oz 49ft/s 257ft/s 7.9G 1,084ft 8.5s 7s
OK Cesaroni H151 72.4oz 57ft/s 280ft/s 9.1G 1,095ft 8.3s 7s
OK AeroTech H220 72.8oz 66ft/s 295ft/s 14.2G 1,100ft 8.2s 7s
OK AeroTech H210 72.7oz 63ft/s 299ft/s 11.9G 1,123ft 8.3s 7s
OK Cesaroni H135 72.9oz 51ft/s 285ft/s 7.2G 1,154ft 8.7s 7s
OK Cesaroni H160 73.6oz 52ft/s 298ft/s 8.1G 1,173ft 8.6s 7s
OK Cesaroni H170 72.2oz 61ft/s 298ft/s 10.8G 1,181ft 8.5s 7s
OK AeroTech H182 71.3oz 54ft/s 308ft/s 8.7G 1,191ft 8.6s 7s
OK AeroTech H180 72.9oz 62ft/s 314ft/s 11.7G 1,252ft 8.7s 7s
OK AeroTech H135 71.5oz 50ft/s 291ft/s 6.8G 1,257ft 9.1s 7s
OK AeroTech H250 73.0oz 76ft/s 333ft/s 14.9G 1,292ft 8.7s 8s
OK KBA H225 75.1oz 57ft/s 337ft/s 12.1G 1,332ft 9.0s 8s
OK AeroTech H195 70.9oz 65ft/s 340ft/s 11.9G 1,367ft 9.0s 8s
OK Cesaroni H295 76.1oz 73ft/s 358ft/s 16.6G 1,411ft 9.1s 8s
OK Cesaroni H180 75.1oz 63ft/s 341ft/s 12.0G 1,449ft 9.4s 8s
OK Cesaroni H194 74.0oz 63ft/s 348ft/s 12.7G 1,459ft 9.3s 8s
OK Cesaroni H200 73.7oz 65ft/s 354ft/s 13.2G 1,499ft 9.4s 8s
OK Cesaroni H140 73.8oz 61ft/s 337ft/s 11.0G 1,539ft 9.7s 8s
OK Cesaroni H255 72.2oz 74ft/s 389ft/s 17.7G 1,616ft 9.5s 8s
OK Cesaroni H340 77.8oz 81ft/s 402ft/s 19.5G 1,639ft 9.6s 9s
OK Cesaroni H399 74.4oz 91ft/s 415ft/s 25.4G 1,663ft 9.6s 9s
OK Cesaroni H159 76.1oz 55ft/s 378ft/s 7.8G 1,727ft 10.3s 8s
OK Cesaroni H226 76.7oz 71ft/s 401ft/s 15.4G 1,780ft 10.0s 9s
OK AeroTech H268 76.6oz 71ft/s 418ft/s 14.5G 1,805ft 10.1s 9s
OK Cesaroni H233 75.6oz 71ft/s 416ft/s 15.2G 1,844ft 10.2s 9s
OK Cesaroni H160 75.3oz 67ft/s 384ft/s 14.1G 1,849ft 10.4s 8s
OK Cesaroni H255 75.2oz 75ft/s 431ft/s 18.7G 1,888ft 10.3s 9s
OK AeroTech I200 76.6oz 67ft/s 412ft/s 13.2G 1,920ft 10.5s 9s
OK Cesaroni I204 76.3oz 71ft/s 441ft/s 15.9G 2,077ft 10.8s 9s
OK AeroTech I205 75.1oz 65ft/s 446ft/s 16.4G 2,092ft 10.8s 9s
OK Cesaroni I224 77.1oz 80ft/s 476ft/s 19.2G 2,287ft 11.1s 9s
OK Cesaroni I243 78.1oz 72ft/s 483ft/s 19.1G 2,294ft 11.1s 9s

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
failed5 Estes E16 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech E23 speed at end of launch guide too slow (17ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (8ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (20ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (22ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (19ft/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 (23ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (22ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (21ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (18ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (17ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (19ft/s)
failedA Cesaroni F120 rocket doesn't reach a safe altitude (114ft)
failedG Cesaroni F59 speed at end of launch guide too slow (32ft/s)
failedG AeroTech F67 speed at end of launch guide too slow (37ft/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech F26 speed at end of launch guide too slow (18ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (15ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (33ft/s)
failed5 Apogee F10 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech F50 speed at end of launch guide too slow (33ft/s)
failedG Estes F50 speed at end of launch guide too slow (35ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (26ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (30ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (34ft/s)
failedG AeroTech G104 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G74 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni G88 speed at end of launch guide too slow (38ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (24ft/s)
failedG AeroTech G53 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni G80 speed at end of launch guide too slow (37ft/s)
failedG Estes G40 speed at end of launch guide too slow (31ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (36ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni G83 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (38ft/s)
failedG AeroTech G78 speed at end of launch guide too slow (39ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (31ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (21ft/s)
failedG AeroTech G76 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G64 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G131 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G125 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G80 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (32ft/s)
failed5 AeroTech G8 average thrust fails 5:1 thrust/weight ratio (0:1)
failed5 Estes G80 average thrust fails 5:1 thrust/weight ratio (4:1)
failedG Cesaroni G106 speed at end of launch guide too slow (40ft/s)
failedG KBA G82 speed at end of launch guide too slow (35ft/s)
failedG KBA G135 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (19ft/s)
failedG AeroTech G138 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G118 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G54 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni H90 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni H54 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni H87 speed at end of launch guide too slow (40ft/s)
failedG AeroTech H115 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (45ft/s)
failedG AeroTech H97 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (26ft/s)
failedG RATT H70 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (33ft/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.

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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