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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 55 motors that fit and appear to have enough thrust (677 motors didn't fit, 59 motors failed safety checks). 112 motor had thrust curves available and 223 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:   Nuffin
Owner: Eric Hamilton
Body Diameter: 2.65in
Dry Weight: 80.0oz
MMT Diameter: 29.0mm
MMT Length: 30.00in
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 85.2oz 52ft/s 107ft/s 5.4G 285ft 4.8s 3s
OK Cesaroni G250 85.0oz 82ft/s 136ft/s 11.3G 303ft 4.6s 4s
OK Cesaroni G126 85.1oz 56ft/s 129ft/s 5.7G 309ft 4.8s 4s
OK Cesaroni G131 87.1oz 53ft/s 137ft/s 5.5G 345ft 5.1s 4s
OK AeroTech G125 84.4oz 56ft/s 141ft/s 5.7G 365ft 5.2s 4s
OK KBA G135 88.0oz 54ft/s 158ft/s 5.6G 443ft 5.7s 5s
OK Cesaroni G118 86.6oz 53ft/s 171ft/s 5.5G 544ft 6.4s 5s
OK Cesaroni G125 86.9oz 58ft/s 173ft/s 5.7G 553ft 6.4s 5s
OK Cesaroni H90 85.7oz 50ft/s 166ft/s 5.5G 569ft 6.7s 5s
OK RATT H70 92.4oz 49ft/s 152ft/s 4.3G 573ft 6.8s 4s
OK AeroTech H165 87.1oz 66ft/s 183ft/s 6.9G 579ft 6.4s 5s
OK Cesaroni H133 86.7oz 58ft/s 179ft/s 6.9G 585ft 6.5s 5s
OK Cesaroni H175 88.7oz 63ft/s 190ft/s 8.8G 608ft 6.5s 6s
OK Cesaroni H163 86.6oz 64ft/s 191ft/s 8.0G 627ft 6.7s 6s
OK AeroTech G138 85.2oz 57ft/s 193ft/s 7.2G 631ft 6.7s 6s
OK Cesaroni H123 88.0oz 53ft/s 188ft/s 5.0G 646ft 7.0s 5s
OK AeroTech H128 87.3oz 62ft/s 190ft/s 6.5G 647ft 6.8s 5s
OK AeroTech H115 87.2oz 51ft/s 187ft/s 4.2G 660ft 7.1s 5s
OK Cesaroni H410 86.4oz 109ft/s 212ft/s 20.8G 681ft 6.6s 6s
OK AeroTech H238 86.9oz 73ft/s 203ft/s 9.0G 689ft 6.8s 6s
OK Cesaroni H118 88.2oz 56ft/s 196ft/s 5.9G 739ft 7.3s 6s
OK KBA H130 105.0oz 57ft/s 216ft/s 6.5G 906ft 8.1s 6s
OK Cesaroni H151 88.4oz 65ft/s 229ft/s 7.3G 908ft 7.9s 7s
OK Cesaroni H237 90.4oz 75ft/s 241ft/s 11.1G 912ft 7.8s 7s
OK AeroTech H220 88.8oz 79ft/s 242ft/s 11.4G 929ft 7.8s 7s
OK AeroTech H210 88.7oz 75ft/s 244ft/s 9.7G 949ft 8.0s 7s
OK Cesaroni H135 88.9oz 57ft/s 233ft/s 5.7G 959ft 8.3s 7s
OK Cesaroni H160 89.6oz 61ft/s 244ft/s 6.5G 990ft 8.3s 7s
OK Cesaroni H170 88.2oz 70ft/s 244ft/s 8.7G 1,004ft 8.3s 7s
OK AeroTech H182 87.3oz 64ft/s 251ft/s 7.3G 1,010ft 8.4s 7s
OK AeroTech H135 87.5oz 56ft/s 239ft/s 5.4G 1,058ft 8.8s 7s
OK AeroTech H180 88.9oz 72ft/s 258ft/s 9.4G 1,087ft 8.6s 7s
OK AeroTech H250 89.0oz 86ft/s 274ft/s 12.0G 1,141ft 8.6s 8s
OK KBA H225 91.1oz 68ft/s 277ft/s 10.1G 1,178ft 8.9s 8s
OK AeroTech H195 86.9oz 74ft/s 279ft/s 9.5G 1,216ft 9.0s 8s
OK Cesaroni H295 92.1oz 86ft/s 296ft/s 14.0G 1,288ft 9.1s 8s
OK Cesaroni H180 91.1oz 71ft/s 284ft/s 9.7G 1,309ft 9.4s 8s
OK Cesaroni H194 90.0oz 73ft/s 289ft/s 10.3G 1,322ft 9.4s 8s
OK Cesaroni H200 89.7oz 74ft/s 295ft/s 10.6G 1,371ft 9.5s 8s
OK Cesaroni H140 89.8oz 69ft/s 282ft/s 8.8G 1,394ft 9.8s 8s
OK Cesaroni H255 88.2oz 86ft/s 323ft/s 14.3G 1,548ft 9.9s 9s
OK Cesaroni H340 93.8oz 95ft/s 335ft/s 16.0G 1,577ft 9.9s 9s
OK Cesaroni H399 90.4oz 107ft/s 344ft/s 20.7G 1,611ft 10.0s 9s
OK Cesaroni H159 92.1oz 63ft/s 318ft/s 6.3G 1,623ft 10.6s 9s
OK Cesaroni H226 92.7oz 81ft/s 339ft/s 12.6G 1,733ft 10.5s 9s
OK AeroTech H268 92.6oz 84ft/s 352ft/s 11.9G 1,772ft 10.6s 9s
OK Cesaroni H160 91.3oz 77ft/s 327ft/s 11.5G 1,790ft 10.9s 9s
OK Cesaroni H233 91.6oz 82ft/s 351ft/s 12.4G 1,818ft 10.8s 9s
OK Cesaroni H255 91.2oz 87ft/s 364ft/s 15.3G 1,884ft 10.9s 10s
OK AeroTech I200 92.6oz 79ft/s 351ft/s 10.8G 1,905ft 11.1s 9s
OK Cesaroni I204 92.3oz 81ft/s 378ft/s 12.9G 2,127ft 11.6s 10s
OK AeroTech I205 91.1oz 76ft/s 381ft/s 13.4G 2,147ft 11.7s 10s
OK Cesaroni I224 93.1oz 88ft/s 412ft/s 15.8G 2,436ft 12.3s 11s
OK Cesaroni I243 94.1oz 83ft/s 419ft/s 15.7G 2,448ft 12.3s 11s
OK KBA J520 105.5oz 110ft/s 681ft/s 23.3G 4,575ft 15.9s 15s

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 (2ft/s)
failed5 AeroTech E16 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech F23 speed at end of launch guide too slow (17ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (23ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (15ft/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 (33ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (23ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (20ft/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 (30ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (15ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (17ft/s)
failedA Cesaroni F120 rocket doesn't reach a safe altitude (73ft)
failedG Cesaroni F59 speed at end of launch guide too slow (34ft/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 (16ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (10ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (36ft/s)
failed5 Apogee F10 average thrust fails 5:1 thrust/weight ratio (0:1)
failedG AeroTech F50 speed at end of launch guide too slow (36ft/s)
failedG Estes F50 speed at end of launch guide too slow (38ft/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 (31ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (38ft/s)
failedA AeroTech G104 rocket doesn't reach a safe altitude (163ft)
failedG AeroTech G74 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G88 speed at end of launch guide too slow (44ft/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 (38ft/s)
failedG Cesaroni G80 speed at end of launch guide too slow (42ft/s)
failedG Estes G40 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni G83 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (37ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (39ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G78 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (22ft/s)
failedG AeroTech G64 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G80 speed at end of launch guide too slow (45ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (37ft/s)
failed5 Estes G80 average thrust fails 5:1 thrust/weight ratio (3:1)
failedG Cesaroni G106 speed at end of launch guide too slow (47ft/s)
failedG KBA G82 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (20ft/s)
failedG Cesaroni G54 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni H54 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H87 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H97 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (37ft/s)
failedG RATT I80 speed at end of launch guide too slow (44ft/s)

G These simulations were run with a launch guide length of 10ft (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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