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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 68 motors that fit and appear to have enough thrust (686 motors didn't fit, 48 motors failed safety checks). 114 motor had thrust curves available and 230 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:   NCR Archer XL
Owner: Adrian Butler
Body Diameter: 4.00in
Dry Weight: 53.0oz
MMT Diameter: 29.0mm
MMT Length: 22.00in
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 Cesaroni G88 58.4oz 49ft/s 136ft/s 6.2G 319ft 4.8s 4s
OK AeroTech G74 56.1oz 49ft/s 139ft/s 4.9G 338ft 5.0s 4s
OK AeroTech G104 57.8oz 57ft/s 140ft/s 6.6G 339ft 4.9s 4s
OK AeroTech G79 58.5oz 49ft/s 166ft/s 5.1G 477ft 5.9s 4s
OK Cesaroni G83 58.1oz 50ft/s 168ft/s 5.2G 482ft 5.9s 5s
OK Cesaroni G250 58.0oz 88ft/s 205ft/s 16.9G 548ft 5.8s 5s
OK AeroTech G76 58.2oz 60ft/s 169ft/s 8.3G 551ft 6.2s 4s
OK AeroTech G64 58.3oz 52ft/s 166ft/s 5.7G 561ft 6.4s 4s
OK Cesaroni G126 58.1oz 64ft/s 198ft/s 8.8G 575ft 6.1s 5s
OK AeroTech G75 57.6oz 49ft/s 181ft/s 5.3G 584ft 6.5s 4s
OK AeroTech G78 57.4oz 50ft/s 190ft/s 5.4G 609ft 6.5s 5s
OK Cesaroni G131 60.1oz 60ft/s 208ft/s 8.1G 625ft 6.4s 5s
OK AeroTech G125 57.4oz 63ft/s 217ft/s 8.6G 659ft 6.5s 6s
OK AeroTech G80 57.5oz 52ft/s 199ft/s 5.5G 666ft 6.8s 5s
OK Cesaroni G106 59.6oz 51ft/s 222ft/s 6.9G 714ft 6.9s 6s
OK KBA G135 61.0oz 57ft/s 238ft/s 8.3G 759ft 7.0s 6s
OK Cesaroni G54 59.8oz 52ft/s 197ft/s 6.3G 864ft 8.0s 5s
OK Cesaroni G118 59.6oz 58ft/s 257ft/s 8.4G 898ft 7.6s 6s
OK Cesaroni G125 59.9oz 64ft/s 259ft/s 8.7G 902ft 7.6s 6s
OK AeroTech H165 60.1oz 71ft/s 271ft/s 10.4G 919ft 7.5s 6s
OK Cesaroni H133 59.7oz 65ft/s 266ft/s 10.5G 937ft 7.7s 6s
OK RATT H70 65.4oz 56ft/s 225ft/s 6.5G 944ft 8.1s 5s
OK Cesaroni H175 61.7oz 71ft/s 280ft/s 12.6G 945ft 7.6s 7s
OK Cesaroni H87 60.2oz 51ft/s 249ft/s 6.7G 947ft 8.0s 6s
OK Cesaroni H90 58.7oz 56ft/s 252ft/s 8.5G 948ft 7.9s 6s
OK Cesaroni H163 59.6oz 69ft/s 283ft/s 12.1G 977ft 7.7s 7s
OK AeroTech G138 58.2oz 60ft/s 290ft/s 10.4G 992ft 7.8s 7s
OK Cesaroni H410 59.4oz 115ft/s 312ft/s 30.6G 1,000ft 7.5s 7s
OK AeroTech H128 60.3oz 68ft/s 281ft/s 9.9G 1,001ft 7.8s 7s
OK Cesaroni H123 61.0oz 57ft/s 279ft/s 7.2G 1,014ft 8.1s 7s
OK AeroTech H238 59.9oz 80ft/s 298ft/s 13.3G 1,031ft 7.8s 7s
OK AeroTech H115 60.2oz 57ft/s 279ft/s 6.4G 1,041ft 8.2s 6s
OK AeroTech H97 62.8oz 51ft/s 271ft/s 5.3G 1,063ft 8.5s 6s
OK Cesaroni H118 61.2oz 62ft/s 288ft/s 9.0G 1,105ft 8.3s 7s
OK Cesaroni H237 63.4oz 79ft/s 348ft/s 15.5G 1,244ft 8.4s 7s
OK KBA H130 78.0oz 61ft/s 294ft/s 9.1G 1,254ft 8.9s 7s
OK AeroTech H220 61.8oz 85ft/s 348ft/s 16.9G 1,262ft 8.4s 7s
OK Cesaroni H151 61.4oz 72ft/s 330ft/s 10.9G 1,269ft 8.6s 7s
OK AeroTech H210 61.7oz 81ft/s 352ft/s 14.1G 1,287ft 8.6s 8s
OK Cesaroni H135 61.9oz 64ft/s 335ft/s 8.6G 1,334ft 9.0s 7s
OK Cesaroni H160 62.6oz 69ft/s 350ft/s 9.6G 1,346ft 8.9s 8s
OK Cesaroni H170 61.2oz 76ft/s 350ft/s 13.0G 1,349ft 8.8s 7s
OK AeroTech H182 60.3oz 69ft/s 364ft/s 10.5G 1,361ft 8.9s 8s
OK AeroTech H180 61.9oz 78ft/s 369ft/s 13.9G 1,414ft 8.9s 8s
OK AeroTech H135 60.5oz 63ft/s 341ft/s 8.2G 1,442ft 9.3s 7s
OK AeroTech H250 62.0oz 96ft/s 390ft/s 17.7G 1,446ft 8.9s 8s
OK KBA H225 64.1oz 72ft/s 395ft/s 14.2G 1,490ft 9.2s 8s
OK AeroTech H195 59.9oz 82ft/s 399ft/s 14.2G 1,522ft 9.2s 8s
OK Cesaroni H295 65.1oz 91ft/s 419ft/s 19.1G 1,552ft 9.2s 8s
OK Cesaroni H180 64.1oz 79ft/s 396ft/s 14.2G 1,603ft 9.5s 8s
OK Cesaroni H194 63.0oz 80ft/s 405ft/s 15.1G 1,611ft 9.4s 8s
OK Cesaroni H200 62.7oz 82ft/s 411ft/s 15.7G 1,648ft 9.5s 8s
OK Cesaroni H140 62.8oz 76ft/s 390ft/s 13.1G 1,701ft 9.8s 8s
OK Cesaroni H255 61.2oz 96ft/s 453ft/s 21.1G 1,743ft 9.5s 8s
OK Cesaroni H340 66.8oz 101ft/s 467ft/s 22.9G 1,757ft 9.5s 9s
OK Cesaroni H399 63.4oz 114ft/s 484ft/s 30.0G 1,777ft 9.5s 9s
OK Cesaroni H159 65.1oz 69ft/s 434ft/s 9.3G 1,874ft 10.3s 8s
OK Cesaroni H226 65.7oz 88ft/s 461ft/s 18.2G 1,899ft 10.0s 9s
OK AeroTech H268 65.6oz 89ft/s 482ft/s 17.1G 1,919ft 10.0s 9s
OK Cesaroni H233 64.6oz 89ft/s 479ft/s 17.9G 1,956ft 10.1s 9s
OK Cesaroni H160 64.3oz 84ft/s 439ft/s 16.7G 1,980ft 10.3s 8s
OK Cesaroni H255 64.2oz 94ft/s 497ft/s 22.1G 1,993ft 10.1s 9s
OK AeroTech I200 65.6oz 87ft/s 471ft/s 15.6G 2,032ft 10.3s 9s
OK Cesaroni I204 65.3oz 89ft/s 501ft/s 18.7G 2,169ft 10.5s 9s
OK AeroTech I205 64.1oz 81ft/s 509ft/s 19.4G 2,182ft 10.5s 9s
OK Cesaroni I224 66.1oz 99ft/s 541ft/s 22.6G 2,352ft 10.8s 9s
OK Cesaroni I243 67.1oz 95ft/s 546ft/s 22.4G 2,357ft 10.8s 9s
warningsW,D Estes G80 57.4oz 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 (24ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (16ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (29ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (26ft/s)
failedG Estes F15 speed at end of launch guide too slow (1ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (31ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (29ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (25ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (26ft/s)
failedA Cesaroni F120 rocket doesn't reach a safe altitude (162ft)
failedG Cesaroni F59 speed at end of launch guide too slow (41ft/s)
failedA AeroTech F67 rocket doesn't reach a safe altitude (192ft)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (2:1)
failedG AeroTech F26 speed at end of launch guide too slow (24ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (22ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (43ft/s)
failedG Apogee F10 speed at end of launch guide too slow (9ft/s)
failedG AeroTech F50 speed at end of launch guide too slow (42ft/s)
failedG Estes F50 speed at end of launch guide too slow (45ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (35ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (38ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (32ft/s)
failedG AeroTech G53 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G80 speed at end of launch guide too slow (47ft/s)
failedG Estes G40 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (47ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (42ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (28ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (42ft/s)
failed5 AeroTech G8 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech G11 speed at end of launch guide too slow (10ft/s)
failedG AeroTech G12 speed at end of launch guide too slow (13ft/s)
failedG KBA G82 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni H54 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (42ft/s)

G These simulations were run with a launch guide length of 8ft (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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