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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 121 motors that fit and appear to have enough thrust (608 motors didn't fit, 62 motors failed safety checks). 183 motor had thrust curves available and 373 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:   BBX - 38mm
Owner: Ed Hingsbergen
Body Diameter: 4.00in
Dry Weight: 9.90lb
MMT Diameter: 38.0mm
MMT Length: 600.0cm
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 Contrail H246 11.22lb 69ft/s 116ft/s 9.7G 263ft 4.3s 3s
OK Contrail H141 11.25lb 50ft/s 110ft/s 4.3G 279ft 4.7s 3s
OK Loki H144 10.64lb 50ft/s 113ft/s 4.2G 302ft 4.9s 3s
OK AeroTech H669 10.46lb 97ft/s 142ft/s 22.8G 314ft 4.5s 4s
OK AeroTech H219 10.48lb 57ft/s 129ft/s 5.3G 317ft 4.9s 4s
OK AeroTech H242 10.48lb 50ft/s 127ft/s 4.1G 330ft 5.1s 4s
OK Contrail H248 11.65lb 62ft/s 129ft/s 12.3G 334ft 4.9s 4s
OK Loki H160 10.64lb 55ft/s 128ft/s 5.1G 355ft 5.2s 4s
OK Cesaroni H400 10.53lb 71ft/s 156ft/s 8.5G 392ft 5.2s 5s
OK Cesaroni H225 10.33lb 52ft/s 153ft/s 4.6G 427ft 5.6s 4s
OK Contrail H277 11.47lb 67ft/s 150ft/s 13.8G 428ft 5.5s 4s
OK Contrail H340 11.70lb 68ft/s 160ft/s 16.2G 456ft 5.6s 5s
OK AeroTech I218 10.72lb 56ft/s 168ft/s 5.0G 531ft 6.3s 5s
OK AeroTech I180 10.75lb 65ft/s 160ft/s 6.6G 558ft 6.4s 4s
OK Contrail I500 11.66lb 99ft/s 185ft/s 18.6G 560ft 6.0s 5s
OK AeroTech H550 10.61lb 89ft/s 196ft/s 12.7G 582ft 6.1s 6s
OK AeroTech H550 10.60lb 89ft/s 197ft/s 12.8G 586ft 6.2s 6s
warningsW Cesaroni H565 10.70lb 88ft/s 200ft/s 12.6G 595ft 6.2s 6s
OK Contrail I221 11.47lb 69ft/s 171ft/s 8.4G 602ft 6.5s 5s
OK AeroTech H999 10.63lb 119ft/s 209ft/s 33.0G 619ft 6.2s 6s
OK AeroTech I225 10.97lb 51ft/s 184ft/s 4.7G 639ft 7.0s 5s
OK AeroTech I245 10.70lb 68ft/s 190ft/s 7.7G 661ft 6.8s 5s
OK AeroTech I357 10.66lb 65ft/s 195ft/s 7.0G 666ft 6.8s 5s
OK Cesaroni I195 10.82lb 49ft/s 198ft/s 3.9G 748ft 7.6s 6s
OK Cesaroni I566 10.75lb 84ft/s 231ft/s 12.2G 762ft 7.0s 6s
OK Contrail I290 11.85lb 67ft/s 213ft/s 8.5G 804ft 7.4s 6s
OK Cesaroni I345 10.77lb 66ft/s 230ft/s 7.1G 829ft 7.5s 6s
OK Contrail I400 11.94lb 83ft/s 228ft/s 15.7G 830ft 7.3s 6s
OK Contrail I250 11.50lb 68ft/s 213ft/s 10.2G 835ft 7.6s 6s
OK Cesaroni I236 10.78lb 55ft/s 219ft/s 5.5G 847ft 7.8s 6s
OK AeroTech I285 10.99lb 64ft/s 226ft/s 6.7G 849ft 7.7s 6s
OK Contrail I747 11.75lb 134ft/s 250ft/s 35.3G 876ft 7.3s 7s
OK Cesaroni I223 10.99lb 50ft/s 224ft/s 4.3G 886ft 8.1s 6s
OK AeroTech I211 10.90lb 57ft/s 217ft/s 5.6G 893ft 8.1s 6s
OK AeroTech I195 11.16lb 59ft/s 220ft/s 6.3G 920ft 8.2s 6s
OK Cesaroni I800 10.91lb 100ft/s 263ft/s 17.7G 925ft 7.6s 7s
OK AeroTech I305 11.18lb 67ft/s 238ft/s 7.2G 945ft 8.0s 6s
OK AeroTech I300 10.87lb 67ft/s 239ft/s 8.6G 946ft 8.0s 6s
OK AeroTech I1299 10.83lb 138ft/s 276ft/s 30.4G 979ft 7.6s 7s
OK Contrail I210 11.82lb 69ft/s 216ft/s 7.9G 989ft 8.5s 6s
OK Loki I316 11.09lb 77ft/s 257ft/s 9.2G 1,073ft 8.4s 7s
OK Cesaroni I287 11.23lb 58ft/s 262ft/s 6.0G 1,088ft 8.7s 7s
OK Loki I210 11.09lb 64ft/s 243ft/s 8.0G 1,106ft 8.7s 6s
OK Cesaroni I285 11.02lb 60ft/s 271ft/s 6.2G 1,183ft 9.0s 7s
OK Loki I405 11.10lb 90ft/s 284ft/s 15.3G 1,191ft 8.6s 7s
OK Cesaroni I255 11.04lb 59ft/s 269ft/s 5.4G 1,195ft 9.2s 7s
OK Contrail I333 11.95lb 73ft/s 277ft/s 15.4G 1,240ft 9.0s 7s
OK Loki I430 11.09lb 74ft/s 301ft/s 9.8G 1,264ft 9.0s 8s
OK Loki I377 11.13lb 81ft/s 290ft/s 12.3G 1,270ft 9.0s 8s
OK AMW I297 11.20lb 60ft/s 288ft/s 6.5G 1,287ft 9.3s 7s
OK AeroTech I327 11.28lb 67ft/s 294ft/s 7.6G 1,298ft 9.3s 8s
OK Cesaroni I242 11.11lb 54ft/s 280ft/s 4.8G 1,299ft 9.6s 7s
OK AeroTech I366 11.12lb 75ft/s 298ft/s 8.8G 1,309ft 9.2s 8s
OK Cesaroni I303 11.00lb 64ft/s 290ft/s 7.4G 1,311ft 9.4s 7s
OK AeroTech I364 11.39lb 67ft/s 295ft/s 7.3G 1,319ft 9.3s 8s
OK AeroTech I280 11.26lb 58ft/s 293ft/s 5.7G 1,336ft 9.6s 8s
OK Cesaroni I470 10.99lb 79ft/s 317ft/s 10.4G 1,350ft 9.2s 8s
OK Contrail I307 11.69lb 81ft/s 294ft/s 12.7G 1,382ft 9.4s 8s
OK Cesaroni I350 11.62lb 65ft/s 319ft/s 6.7G 1,466ft 9.8s 8s
OK AeroTech I435 11.04lb 90ft/s 329ft/s 14.4G 1,477ft 9.5s 8s
OK KBA I301 11.50lb 63ft/s 315ft/s 7.0G 1,477ft 9.9s 8s
OK Contrail J150 11.86lb 50ft/s 259ft/s 4.1G 1,490ft 10.7s 7s
OK AeroTech I284 11.12lb 73ft/s 316ft/s 8.9G 1,496ft 9.8s 8s
OK Contrail I727 11.95lb 133ft/s 344ft/s 30.2G 1,512ft 9.4s 9s
OK KBA I550 11.47lb 81ft/s 354ft/s 12.4G 1,542ft 9.7s 9s
OK Cesaroni I216 11.22lb 56ft/s 304ft/s 5.8G 1,604ft 10.6s 8s
OK RATT J160 11.10lb 51ft/s 255ft/s 4.3G 1,614ft 11.4s 6s
OK AeroTech I500 11.17lb 79ft/s 356ft/s 10.6G 1,650ft 10.1s 9s
OK Contrail J246 11.80lb 71ft/s 308ft/s 9.0G 1,664ft 10.6s 8s
OK Cesaroni J270 11.34lb 56ft/s 331ft/s 5.0G 1,670ft 10.7s 8s
OK Loki J396 11.56lb 68ft/s 353ft/s 9.7G 1,679ft 10.3s 9s
OK Cesaroni J335 11.28lb 67ft/s 346ft/s 7.2G 1,691ft 10.5s 8s
OK Cesaroni J285 11.21lb 63ft/s 336ft/s 6.4G 1,692ft 10.6s 8s
warningsW Cesaroni I540 11.22lb 88ft/s 370ft/s 11.7G 1,699ft 10.1s 9s
OK AeroTech I350 11.26lb 71ft/s 358ft/s 8.8G 1,704ft 10.4s 9s
OK Cesaroni J316 11.24lb 65ft/s 341ft/s 7.7G 1,710ft 10.6s 8s
OK AeroTech J420 11.33lb 78ft/s 359ft/s 10.1G 1,715ft 10.4s 9s
OK AeroTech I600 11.23lb 97ft/s 372ft/s 15.4G 1,719ft 10.1s 9s
OK Cesaroni J381 11.42lb 73ft/s 356ft/s 8.9G 1,730ft 10.5s 9s
OK AeroTech J340 11.17lb 75ft/s 353ft/s 11.1G 1,741ft 10.5s 8s
OK Cesaroni J357 11.22lb 70ft/s 359ft/s 9.3G 1,753ft 10.6s 9s
OK AeroTech J350 11.37lb 89ft/s 363ft/s 15.3G 1,757ft 10.3s 9s
OK KBA J740 11.50lb 103ft/s 394ft/s 17.8G 1,780ft 10.2s 9s
OK Cesaroni J290 11.35lb 62ft/s 350ft/s 6.8G 1,808ft 11.0s 9s
OK AeroTech J425 11.29lb 69ft/s 379ft/s 8.1G 1,824ft 10.7s 9s
OK Contrail J333 12.25lb 93ft/s 334ft/s 13.6G 1,861ft 10.8s 8s
OK AeroTech J270 11.32lb 61ft/s 353ft/s 6.1G 1,875ft 11.2s 9s
OK Cesaroni J400 11.45lb 73ft/s 379ft/s 8.4G 1,883ft 10.8s 9s
OK Contrail J242 12.25lb 67ft/s 321ft/s 7.2G 1,889ft 11.3s 8s
OK AeroTech J520 11.60lb 104ft/s 396ft/s 18.8G 1,958ft 10.8s 9s
OK AeroTech J500 11.34lb 89ft/s 406ft/s 14.7G 2,012ft 10.9s 10s
OK Loki J528 11.54lb 97ft/s 422ft/s 18.9G 2,071ft 10.9s 10s
OK Contrail J555 12.40lb 114ft/s 400ft/s 23.3G 2,082ft 11.1s 9s
OK Cesaroni J330 11.45lb 70ft/s 395ft/s 8.0G 2,118ft 11.6s 9s
OK Cesaroni J410 11.52lb 75ft/s 415ft/s 8.9G 2,158ft 11.5s 10s
OK AeroTech J435 11.28lb 85ft/s 425ft/s 12.7G 2,196ft 11.4s 10s
OK AeroTech J575 11.92lb 101ft/s 439ft/s 15.5G 2,204ft 11.2s 10s
OK Cesaroni J425 11.44lb 79ft/s 421ft/s 12.1G 2,206ft 11.5s 10s
OK Loki J320 11.56lb 69ft/s 405ft/s 9.3G 2,250ft 11.9s 9s
OK Loki J712 11.56lb 97ft/s 457ft/s 16.1G 2,266ft 11.4s 10s
OK Cesaroni J354 11.62lb 72ft/s 415ft/s 9.1G 2,294ft 11.9s 9s
OK Cesaroni J520 11.77lb 80ft/s 459ft/s 11.5G 2,394ft 11.9s 10s
OK Contrail J222 12.20lb 63ft/s 369ft/s 9.0G 2,495ft 13.0s 9s
OK Cesaroni J580 12.20lb 83ft/s 477ft/s 11.7G 2,499ft 12.1s 10s
OK Contrail J345 12.36lb 85ft/s 418ft/s 14.8G 2,533ft 12.4s 10s
OK Contrail J800 12.43lb 134ft/s 476ft/s 31.9G 2,544ft 11.8s 11s
OK Cesaroni J150 12.00lb 48ft/s 332ft/s 5.1G 2,546ft 14.1s 8s
OK Loki J650 12.42lb 90ft/s 500ft/s 15.7G 2,646ft 12.2s 11s
OK Cesaroni J394 11.97lb 68ft/s 488ft/s 7.7G 2,793ft 13.0s 10s
OK AeroTech J825 11.83lb 111ft/s 549ft/s 21.3G 2,809ft 12.3s 11s
OK Cesaroni J595 11.81lb 92ft/s 528ft/s 16.3G 2,887ft 12.7s 11s
OK Cesaroni J600 11.90lb 90ft/s 539ft/s 12.7G 2,913ft 12.8s 11s
OK Cesaroni J420 11.83lb 84ft/s 501ft/s 13.9G 2,946ft 13.0s 10s
OK Cesaroni J453 12.03lb 82ft/s 509ft/s 12.6G 2,950ft 13.1s 11s
OK AeroTech J570 11.89lb 107ft/s 523ft/s 20.8G 3,020ft 12.9s 11s
OK Cesaroni J530 12.05lb 95ft/s 564ft/s 14.0G 3,278ft 13.4s 11s
OK AeroTech J510 12.28lb 99ft/s 577ft/s 18.0G 3,438ft 13.7s 11s
OK Loki J1000 12.42lb 120ft/s 655ft/s 24.3G 3,528ft 13.4s 12s
OK Loki J1026 12.48lb 113ft/s 683ft/s 20.7G 3,669ft 13.7s 12s
OK Loki K1127 12.48lb 121ft/s 680ft/s 24.0G 3,715ft 13.7s 12s
OK Loki K627 12.62lb 99ft/s 715ft/s 16.6G 4,425ft 15.0s 12s

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
failedG Contrail G130 speed at end of launch guide too slow (39ft/s)
failedA AeroTech G339 rocket doesn't reach a safe altitude (81ft)
failedG AeroTech G67 speed at end of launch guide too slow (24ft/s)
failedG Loki G69 speed at end of launch guide too slow (24ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (21ft/s)
failedA Contrail G234 rocket doesn't reach a safe altitude (78ft)
failedG Loki G70 speed at end of launch guide too slow (26ft/s)
failedG Loki G94 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (20ft/s)
failedG Loki G80 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (8ft/s)
failedG Cesaroni G185 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (24ft/s)
failedG Loki G66 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (22ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (16ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (24ft/s)
failedG Contrail G123 speed at end of launch guide too slow (41ft/s)
failedG Contrail G100 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (11ft/s)
failedA Contrail G300 rocket doesn't reach a safe altitude (60ft)
failedA Contrail H222 rocket doesn't reach a safe altitude (141ft)
failedA Contrail H300 rocket doesn't reach a safe altitude (145ft)
failedA Contrail H303 rocket doesn't reach a safe altitude (165ft)
failedG AeroTech H73 speed at end of launch guide too slow (22ft/s)
failedG Loki H100 speed at end of launch guide too slow (35ft/s)
failedA AeroTech H283 rocket doesn't reach a safe altitude (239ft)
failedG AeroTech H148 speed at end of launch guide too slow (44ft/s)
failedA Contrail H211 rocket doesn't reach a safe altitude (228ft)
failedA AeroTech H130 rocket doesn't reach a safe altitude (242ft)
failedG AeroTech H123 speed at end of launch guide too slow (36ft/s)
failedG Contrail H121 speed at end of launch guide too slow (42ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (34ft/s)
failedG Loki H90 speed at end of launch guide too slow (34ft/s)
failedG Loki H125 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (36ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni H152 speed at end of launch guide too slow (42ft/s)
failedG AeroTech H178 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (31ft/s)
failedG AeroTech H170 speed at end of launch guide too slow (44ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (23ft/s)
failedG AeroTech I161 speed at end of launch guide too slow (46ft/s)
failedG AeroTech I140 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni I180 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni I212 speed at end of launch guide too slow (47ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni I170 speed at end of launch guide too slow (47ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (14ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (16ft/s)
failedG Cesaroni I175 speed at end of launch guide too slow (43ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (38ft/s)
failedG Loki I110 speed at end of launch guide too slow (40ft/s)
failedG Contrail I155 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni I125 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (34ft/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.)

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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