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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 80 motors that fit and appear to have enough thrust (690 motors didn't fit, 40 motors failed safety checks). 120 motor had thrust curves available and 253 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:   BT Thor
Owner: Kenneth B Weaver
Body Diameter: 4.00in
Dry Weight: 6.00lb
MMT Diameter: 38.0mm
MMT Length: 15.00in
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 G185 6.42lb 50ft/s 122ft/s 6.2G 248ft 4.2s 4s
warningsW AeroTech H283 6.54lb 68ft/s 195ft/s 10.5G 562ft 6.0s 5s
OK AeroTech H148 6.68lb 49ft/s 181ft/s 5.5G 579ft 6.5s 5s
OK AeroTech H130 6.52lb 59ft/s 177ft/s 7.9G 594ft 6.4s 5s
OK AeroTech H669 6.56lb 106ft/s 233ft/s 36.9G 683ft 6.4s 6s
OK Loki H125 6.75lb 49ft/s 189ft/s 5.8G 693ft 7.0s 5s
OK Loki H144 6.74lb 57ft/s 199ft/s 7.3G 703ft 6.9s 5s
OK AeroTech H219 6.58lb 62ft/s 222ft/s 9.0G 724ft 6.9s 6s
OK AeroTech H242 6.58lb 55ft/s 222ft/s 7.1G 760ft 7.1s 6s
OK Loki H160 6.74lb 61ft/s 219ft/s 8.6G 790ft 7.2s 6s
OK Cesaroni H400 6.63lb 76ft/s 259ft/s 14.0G 835ft 7.1s 6s
OK Cesaroni H225 6.43lb 57ft/s 264ft/s 8.0G 935ft 7.7s 7s
OK AeroTech H170 6.73lb 49ft/s 268ft/s 5.8G 1,085ft 8.5s 6s
OK AeroTech I218 6.82lb 61ft/s 281ft/s 8.4G 1,090ft 8.3s 7s
OK AeroTech H550 6.71lb 95ft/s 318ft/s 20.7G 1,118ft 8.0s 7s
OK AeroTech H550 6.70lb 96ft/s 320ft/s 20.8G 1,125ft 8.0s 7s
OK AeroTech I180 6.85lb 68ft/s 268ft/s 10.9G 1,128ft 8.4s 6s
warningsW Cesaroni H565 6.80lb 93ft/s 324ft/s 20.2G 1,137ft 8.1s 7s
OK AeroTech I161 6.81lb 51ft/s 269ft/s 6.2G 1,143ft 8.7s 6s
OK AeroTech H999 6.73lb 126ft/s 336ft/s 52.7G 1,157ft 8.0s 8s
OK AeroTech I225 7.07lb 52ft/s 304ft/s 7.8G 1,253ft 8.9s 7s
OK AeroTech I245 6.80lb 73ft/s 310ft/s 12.7G 1,264ft 8.7s 7s
OK Cesaroni I212 7.05lb 50ft/s 312ft/s 7.1G 1,273ft 9.0s 7s
OK AeroTech I357 6.76lb 70ft/s 321ft/s 11.6G 1,275ft 8.7s 7s
OK Cesaroni I566 6.85lb 87ft/s 372ft/s 19.3G 1,373ft 8.8s 8s
OK Cesaroni I195 6.92lb 54ft/s 329ft/s 6.7G 1,441ft 9.6s 8s
OK Cesaroni I345 6.87lb 71ft/s 373ft/s 11.8G 1,492ft 9.3s 8s
OK Cesaroni I170 6.86lb 51ft/s 336ft/s 6.4G 1,494ft 9.8s 7s
OK Cesaroni I175 6.96lb 48ft/s 330ft/s 5.2G 1,496ft 9.9s 7s
OK AeroTech I285 7.09lb 68ft/s 363ft/s 11.0G 1,518ft 9.5s 8s
OK Cesaroni I236 6.88lb 60ft/s 357ft/s 9.2G 1,551ft 9.7s 8s
OK Cesaroni I800 7.01lb 104ft/s 418ft/s 27.6G 1,562ft 9.2s 9s
OK Cesaroni I223 7.09lb 53ft/s 364ft/s 7.1G 1,605ft 9.9s 8s
OK AeroTech I211 7.00lb 62ft/s 351ft/s 9.3G 1,608ft 9.9s 8s
OK AeroTech I1299 6.93lb 141ft/s 437ft/s 48.3G 1,612ft 9.2s 9s
OK AeroTech I305 7.28lb 68ft/s 376ft/s 11.7G 1,622ft 9.7s 8s
OK AeroTech I195 7.26lb 64ft/s 351ft/s 10.2G 1,628ft 9.9s 8s
OK AeroTech I300 6.97lb 72ft/s 382ft/s 14.0G 1,642ft 9.7s 8s
OK Loki I316 7.19lb 81ft/s 402ft/s 14.7G 1,776ft 9.9s 8s
OK Cesaroni I287 7.33lb 61ft/s 413ft/s 9.5G 1,821ft 10.3s 9s
OK Loki I210 7.19lb 71ft/s 381ft/s 12.8G 1,854ft 10.3s 8s
OK Loki I405 7.20lb 98ft/s 438ft/s 24.1G 1,889ft 10.0s 9s
OK Cesaroni I285 7.12lb 64ft/s 429ft/s 10.1G 1,944ft 10.6s 9s
OK Cesaroni I255 7.14lb 60ft/s 425ft/s 9.0G 1,972ft 10.7s 9s
OK Loki I377 7.23lb 87ft/s 446ft/s 19.4G 1,993ft 10.4s 9s
OK Loki I430 7.19lb 79ft/s 472ft/s 15.6G 1,995ft 10.4s 9s
OK AeroTech I327 7.38lb 70ft/s 455ft/s 12.2G 2,040ft 10.6s 9s
OK AMW I297 7.30lb 65ft/s 449ft/s 10.5G 2,045ft 10.7s 9s
OK AeroTech I366 7.22lb 78ft/s 463ft/s 14.2G 2,047ft 10.5s 9s
OK AeroTech I364 7.49lb 68ft/s 455ft/s 11.5G 2,059ft 10.7s 9s
OK Cesaroni I470 7.09lb 86ft/s 495ft/s 16.7G 2,076ft 10.5s 9s
OK Cesaroni I303 7.10lb 69ft/s 454ft/s 12.1G 2,079ft 10.8s 9s
OK Cesaroni I242 7.21lb 59ft/s 439ft/s 7.9G 2,104ft 11.1s 9s
OK AeroTech I280 7.36lb 64ft/s 456ft/s 9.3G 2,113ft 11.0s 9s
OK Cesaroni I125 7.43lb 49ft/s 349ft/s 7.1G 2,135ft 12.0s 7s
OK KBA I301 7.60lb 64ft/s 485ft/s 11.1G 2,197ft 10.9s 9s
OK AeroTech I435 7.14lb 96ft/s 505ft/s 22.8G 2,199ft 10.7s 9s
OK KBA I550 7.57lb 85ft/s 552ft/s 19.4G 2,204ft 10.6s 10s
OK Cesaroni I350 7.72lb 68ft/s 486ft/s 10.7G 2,220ft 11.1s 9s
OK AeroTech I284 7.22lb 77ft/s 484ft/s 14.1G 2,252ft 11.0s 9s
OK AeroTech I500 7.27lb 84ft/s 546ft/s 16.8G 2,377ft 11.0s 10s
warningsW Cesaroni I540 7.32lb 92ft/s 568ft/s 18.4G 2,415ft 11.0s 10s
OK KBA J520 7.59lb 85ft/s 554ft/s 20.1G 2,416ft 11.2s 10s
OK AeroTech I600 7.33lb 104ft/s 566ft/s 24.1G 2,427ft 11.0s 10s
OK Cesaroni I216 7.32lb 60ft/s 465ft/s 9.4G 2,447ft 11.8s 9s
OK AeroTech I350 7.36lb 73ft/s 547ft/s 13.9G 2,454ft 11.3s 10s
OK AeroTech J420 7.43lb 81ft/s 544ft/s 15.9G 2,457ft 11.3s 10s
OK Cesaroni J335 7.38lb 71ft/s 526ft/s 11.5G 2,465ft 11.5s 9s
OK KBA J740 7.60lb 104ft/s 598ft/s 26.5G 2,475ft 11.1s 10s
OK AeroTech J350 7.47lb 95ft/s 546ft/s 23.8G 2,480ft 11.2s 10s
OK Cesaroni J285 7.31lb 67ft/s 511ft/s 10.2G 2,489ft 11.7s 9s
OK AeroTech J340 7.27lb 82ft/s 535ft/s 17.6G 2,491ft 11.4s 9s
OK Cesaroni J270 7.44lb 59ft/s 506ft/s 8.0G 2,491ft 11.8s 9s
OK Cesaroni J316 7.34lb 70ft/s 517ft/s 12.4G 2,506ft 11.6s 9s
OK Cesaroni J357 7.32lb 77ft/s 545ft/s 14.8G 2,515ft 11.5s 10s
OK AeroTech J425 7.39lb 72ft/s 579ft/s 12.6G 2,579ft 11.6s 10s
OK Cesaroni J290 7.45lb 67ft/s 527ft/s 10.8G 2,608ft 11.9s 9s
OK AeroTech J270 7.42lb 66ft/s 529ft/s 9.9G 2,681ft 12.0s 9s
OK AeroTech J500 7.44lb 96ft/s 607ft/s 22.9G 2,718ft 11.5s 10s
OK AeroTech J435 7.38lb 94ft/s 633ft/s 20.0G 2,906ft 11.9s 10s

W Motor total weight unknown, lift-off Weight not accurate.

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
failedA AeroTech G339 rocket doesn't reach a safe altitude (212ft)
failedG AeroTech G67 speed at end of launch guide too slow (31ft/s)
failedG Loki G69 speed at end of launch guide too slow (32ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (28ft/s)
failedG Loki G70 speed at end of launch guide too slow (33ft/s)
failedG Loki G94 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (28ft/s)
failedG Loki G80 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (22ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (28ft/s)
failedG Loki G66 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (29ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (22ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (20ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (27ft/s)
failedG Loki H100 speed at end of launch guide too slow (39ft/s)
failedG AeroTech H123 speed at end of launch guide too slow (41ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (38ft/s)
failedG Loki H90 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (41ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni H152 speed at end of launch guide too slow (47ft/s)
failedG AeroTech H178 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (36ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (28ft/s)
failedG AeroTech I140 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni I180 speed at end of launch guide too slow (47ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (41ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (20ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (23ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (42ft/s)
failedG Loki I110 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (39ft/s)

G These simulations were run with a launch guide length of 7ft (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.)

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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