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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 92 motors that fit and appear to have enough thrust (685 motors didn't fit, 25 motors failed safety checks). 115 motor had thrust curves available and 233 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:   North Coast Archer 4 inch
Owner: Louie Berlin
Body Diameter: 4.00in
Dry Weight: 2.12lb
MMT Diameter: 29.0mm
MMT Length: 36.00in
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 AeroTech F62 2.36lb 50ft/s 130ft/s 5.1G 274ft 4.4s 3s
OK AeroTech F42 2.29lb 52ft/s 127ft/s 5.8G 300ft 4.6s 3s
OK Cesaroni F120 2.35lb 77ft/s 155ft/s 12.6G 303ft 4.4s 4s
OK Cesaroni F59 2.34lb 53ft/s 141ft/s 5.8G 305ft 4.6s 4s
OK AeroTech F67 2.30lb 61ft/s 161ft/s 7.4G 359ft 4.8s 4s
OK AeroTech F50 2.31lb 54ft/s 163ft/s 6.1G 409ft 5.2s 4s
OK AeroTech F52 2.39lb 56ft/s 164ft/s 6.4G 428ft 5.4s 4s
OK AeroTech F40 2.40lb 50ft/s 156ft/s 5.4G 460ft 5.7s 4s
warningsW Estes F50 2.30lb 58ft/s 180ft/s 6.6G 479ft 5.6s 4s
OK AeroTech G54 2.42lb 57ft/s 179ft/s 6.5G 488ft 5.7s 4s
OK Cesaroni G88 2.45lb 61ft/s 208ft/s 9.7G 514ft 5.6s 5s
OK AeroTech G104 2.42lb 71ft/s 212ft/s 10.3G 532ft 5.6s 5s
OK AeroTech G74 2.31lb 61ft/s 216ft/s 7.7G 547ft 5.8s 5s
OK AeroTech G53 2.44lb 59ft/s 191ft/s 7.0G 574ft 6.1s 4s
OK Cesaroni G80 2.43lb 57ft/s 229ft/s 8.1G 597ft 6.0s 5s
warningsW Estes G40 2.39lb 51ft/s 196ft/s 5.9G 641ft 6.5s 4s
OK AeroTech G40 2.39lb 51ft/s 196ft/s 5.9G 641ft 6.5s 4s
OK AeroTech G77 2.48lb 54ft/s 236ft/s 7.0G 644ft 6.3s 5s
OK AeroTech G77 2.39lb 60ft/s 246ft/s 8.0G 664ft 6.3s 5s
OK AeroTech G79 2.47lb 60ft/s 245ft/s 7.9G 689ft 6.4s 5s
OK Cesaroni G83 2.44lb 64ft/s 249ft/s 8.2G 693ft 6.4s 5s
OK AeroTech G79 2.39lb 54ft/s 237ft/s 6.5G 696ft 6.6s 5s
OK Cesaroni G68 2.46lb 53ft/s 235ft/s 7.4G 696ft 6.6s 5s
OK Cesaroni G57 2.44lb 56ft/s 222ft/s 7.1G 705ft 6.7s 5s
OK Cesaroni G250 2.43lb 106ft/s 304ft/s 25.3G 714ft 6.1s 6s
OK AeroTech G76 2.44lb 77ft/s 243ft/s 12.9G 758ft 6.5s 5s
OK Cesaroni G126 2.44lb 77ft/s 290ft/s 13.6G 759ft 6.4s 5s
OK AeroTech G64 2.45lb 66ft/s 238ft/s 8.9G 781ft 6.8s 4s
OK AeroTech G75 2.41lb 61ft/s 261ft/s 8.4G 796ft 6.8s 5s
OK Cesaroni G131 2.56lb 72ft/s 302ft/s 12.0G 802ft 6.6s 5s
OK AeroTech G78 2.39lb 62ft/s 277ft/s 8.4G 811ft 6.8s 5s
OK AeroTech G125 2.39lb 75ft/s 318ft/s 12.7G 829ft 6.6s 6s
OK AeroTech G80 2.40lb 64ft/s 286ft/s 8.7G 860ft 6.9s 5s
OK Cesaroni G106 2.53lb 64ft/s 318ft/s 10.7G 891ft 7.0s 6s
OK KBA G135 2.62lb 70ft/s 338ft/s 12.0G 916ft 7.0s 6s
OK KBA G82 2.63lb 54ft/s 295ft/s 6.9G 918ft 7.3s 5s
OK AeroTech G75 2.63lb 52ft/s 290ft/s 5.6G 975ft 7.7s 5s
OK AeroTech H165 2.56lb 87ft/s 379ft/s 15.5G 1,023ft 7.1s 6s
OK Cesaroni G125 2.55lb 77ft/s 360ft/s 13.3G 1,026ft 7.3s 6s
OK Cesaroni G118 2.53lb 73ft/s 357ft/s 12.9G 1,030ft 7.3s 6s
OK Cesaroni H175 2.66lb 87ft/s 392ft/s 16.9G 1,039ft 7.2s 6s
OK Cesaroni H410 2.52lb 139ft/s 449ft/s 44.7G 1,040ft 6.9s 6s
OK Cesaroni H133 2.54lb 79ft/s 368ft/s 16.0G 1,051ft 7.3s 6s
OK Cesaroni H163 2.53lb 86ft/s 396ft/s 18.3G 1,066ft 7.2s 6s
OK Cesaroni G54 2.54lb 67ft/s 265ft/s 9.7G 1,073ft 7.9s 5s
OK AeroTech G138 2.45lb 75ft/s 409ft/s 14.1G 1,078ft 7.3s 6s
OK Cesaroni H90 2.48lb 72ft/s 341ft/s 13.1G 1,086ft 7.6s 6s
OK AeroTech H128 2.57lb 84ft/s 386ft/s 14.7G 1,090ft 7.4s 6s
OK AeroTech H238 2.55lb 98ft/s 413ft/s 19.4G 1,091ft 7.2s 6s
OK Cesaroni H87 2.57lb 64ft/s 336ft/s 10.2G 1,097ft 7.7s 6s
OK RATT H70 2.90lb 68ft/s 300ft/s 9.6G 1,107ft 7.9s 5s
OK Cesaroni H123 2.62lb 71ft/s 382ft/s 11.0G 1,115ft 7.6s 6s
OK Cesaroni H54 2.58lb 59ft/s 271ft/s 7.8G 1,124ft 8.2s 5s
OK AeroTech H115 2.57lb 69ft/s 376ft/s 9.7G 1,139ft 7.6s 6s
OK AeroTech H97 2.73lb 62ft/s 360ft/s 7.9G 1,181ft 8.0s 6s
OK Cesaroni H118 2.63lb 76ft/s 381ft/s 13.5G 1,181ft 7.7s 6s
OK Cesaroni H237 2.77lb 99ft/s 475ft/s 20.8G 1,230ft 7.5s 7s
OK AeroTech H220 2.67lb 104ft/s 471ft/s 24.8G 1,243ft 7.5s 7s
OK AeroTech H210 2.66lb 97ft/s 475ft/s 20.0G 1,264ft 7.6s 7s
OK Cesaroni H151 2.64lb 88ft/s 434ft/s 16.3G 1,275ft 7.7s 6s
OK Cesaroni H170 2.63lb 93ft/s 465ft/s 19.3G 1,318ft 7.7s 6s
OK AeroTech H182 2.58lb 85ft/s 487ft/s 15.1G 1,319ft 7.8s 7s
OK Cesaroni H160 2.72lb 81ft/s 463ft/s 14.3G 1,327ft 7.9s 6s
OK Cesaroni H135 2.67lb 78ft/s 434ft/s 12.9G 1,336ft 8.0s 6s
OK KBA H130 3.68lb 71ft/s 369ft/s 12.4G 1,341ft 8.5s 7s
OK AeroTech H180 2.67lb 95ft/s 486ft/s 20.1G 1,352ft 7.8s 6s
OK AeroTech H250 2.68lb 111ft/s 518ft/s 26.0G 1,355ft 7.7s 7s
OK KBA H225 2.82lb 84ft/s 525ft/s 19.3G 1,404ft 8.0s 7s
OK AeroTech H195 2.55lb 104ft/s 523ft/s 21.4G 1,404ft 7.8s 7s
OK Cesaroni H295 2.87lb 110ft/s 559ft/s 26.5G 1,413ft 7.8s 7s
OK AeroTech H135 2.59lb 77ft/s 433ft/s 12.3G 1,426ft 8.2s 6s
OK Cesaroni H194 2.75lb 99ft/s 518ft/s 22.1G 1,482ft 8.0s 7s
OK Cesaroni H180 2.81lb 93ft/s 508ft/s 20.6G 1,486ft 8.1s 7s
OK Cesaroni H200 2.72lb 97ft/s 525ft/s 23.0G 1,504ft 8.0s 7s
OK Cesaroni H53 2.75lb 52ft/s 322ft/s 6.6G 1,513ft 9.5s 5s
OK Cesaroni H399 2.77lb 140ft/s 643ft/s 43.4G 1,527ft 7.9s 7s
OK Cesaroni H340 2.98lb 119ft/s 612ft/s 32.6G 1,530ft 7.9s 7s
OK Cesaroni H255 2.63lb 115ft/s 586ft/s 31.2G 1,532ft 7.9s 7s
OK Cesaroni H140 2.73lb 92ft/s 483ft/s 19.2G 1,580ft 8.4s 6s
OK AeroTech H268 2.91lb 108ft/s 606ft/s 24.4G 1,656ft 8.3s 7s
OK Cesaroni H226 2.91lb 106ft/s 578ft/s 26.0G 1,657ft 8.3s 7s
OK Cesaroni H233 2.84lb 107ft/s 597ft/s 25.9G 1,684ft 8.3s 7s
OK Cesaroni H159 2.87lb 84ft/s 522ft/s 13.5G 1,688ft 8.7s 7s
OK Cesaroni H255 2.82lb 112ft/s 624ft/s 31.9G 1,695ft 8.2s 7s
OK Cesaroni H160 2.82lb 103ft/s 529ft/s 24.2G 1,751ft 8.6s 6s
OK AeroTech I200 2.91lb 101ft/s 571ft/s 22.5G 1,754ft 8.5s 7s
OK Cesaroni I204 2.89lb 106ft/s 599ft/s 26.8G 1,830ft 8.6s 7s
OK AeroTech I205 2.81lb 100ft/s 611ft/s 28.1G 1,834ft 8.5s 7s
OK Cesaroni I224 2.93lb 118ft/s 651ft/s 32.2G 1,938ft 8.7s 7s
OK Cesaroni I243 3.00lb 114ft/s 642ft/s 31.7G 1,941ft 8.7s 7s
OK RATT I80 3.34lb 54ft/s 408ft/s 7.1G 1,995ft 10.5s 6s
warningsW,D Estes G80 2.39lb 7:1 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 (23ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (35ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (28ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (38ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (36ft/s)
failedG Estes F15 speed at end of launch guide too slow (19ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (39ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (36ft/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (3:1)
failedG AeroTech F26 speed at end of launch guide too slow (34ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (30ft/s)
failedG Apogee F10 speed at end of launch guide too slow (24ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (46ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (37ft/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 (25ft/s)
failedG AeroTech G12 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (43ft/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.

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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