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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 136 motors that fit and appear to have enough thrust (634 motors didn't fit, 35 motors failed safety checks). 171 motor had thrust curves available and 349 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:   Blackstar Jr.
Owner: Wayne Comfort
Body Diameter: 2.30in
Dry Weight: 4.42lb
MMT Diameter: 38.0mm
MMT Length: 32.00in
CD: 0.53

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 G130 5.56lb 54ft/s 108ft/s 20.7G 237ft 4.1s 3s
OK Contrail G300 5.62lb 99ft/s 122ft/s 31.6G 243ft 3.9s 4s
OK Contrail G234 5.62lb 89ft/s 137ft/s 20.8G 329ft 4.6s 4s
OK AeroTech G339 4.82lb 80ft/s 158ft/s 16.6G 398ft 5.1s 5s
OK Contrail G123 5.55lb 52ft/s 151ft/s 13.4G 446ft 5.6s 4s
OK Contrail G100 5.55lb 49ft/s 148ft/s 6.4G 461ft 5.8s 4s
OK Cesaroni G185 4.84lb 53ft/s 170ft/s 8.7G 478ft 5.8s 5s
OK Contrail H300 5.77lb 94ft/s 185ft/s 26.9G 579ft 6.1s 6s
OK Contrail H222 5.57lb 76ft/s 185ft/s 26.4G 585ft 6.2s 5s
OK Contrail H303 5.72lb 101ft/s 199ft/s 29.6G 658ft 6.5s 6s
OK Contrail H211 5.74lb 85ft/s 231ft/s 23.7G 912ft 7.7s 7s
OK Contrail H121 5.77lb 52ft/s 229ft/s 9.4G 1,009ft 8.5s 7s
OK Contrail H246 5.74lb 81ft/s 252ft/s 19.8G 1,042ft 8.2s 7s
warningsW AeroTech H283 4.96lb 71ft/s 269ft/s 14.2G 1,099ft 8.4s 8s
OK AeroTech H148 5.10lb 53ft/s 259ft/s 7.6G 1,139ft 8.9s 7s
OK Contrail H141 5.77lb 59ft/s 255ft/s 9.3G 1,166ft 8.9s 7s
OK AeroTech H130 4.94lb 64ft/s 256ft/s 10.8G 1,178ft 8.9s 7s
OK Contrail H248 6.17lb 80ft/s 275ft/s 24.3G 1,247ft 9.0s 8s
OK AeroTech H669 4.98lb 113ft/s 314ft/s 49.0G 1,350ft 9.1s 9s
OK Loki H125 5.17lb 53ft/s 275ft/s 7.9G 1,368ft 9.8s 8s
OK Loki H144 5.16lb 59ft/s 285ft/s 9.8G 1,383ft 9.6s 8s
OK AeroTech H219 5.00lb 66ft/s 310ft/s 12.2G 1,451ft 9.7s 9s
OK AeroTech H242 5.00lb 60ft/s 314ft/s 9.7G 1,530ft 10.0s 9s
OK Loki H160 5.16lb 64ft/s 310ft/s 11.6G 1,565ft 10.1s 9s
OK Contrail H277 5.99lb 90ft/s 319ft/s 27.4G 1,600ft 10.1s 9s
OK Contrail H340 6.22lb 92ft/s 326ft/s 31.4G 1,624ft 10.1s 9s
OK Cesaroni H400 5.05lb 80ft/s 352ft/s 19.0G 1,684ft 10.2s 10s
OK Cesaroni H152 5.08lb 51ft/s 340ft/s 8.4G 1,832ft 11.1s 9s
OK AeroTech H178 5.13lb 49ft/s 355ft/s 8.7G 1,897ft 11.3s 10s
OK Cesaroni H225 4.85lb 62ft/s 373ft/s 11.0G 1,948ft 11.2s 10s
OK Contrail I500 6.18lb 110ft/s 372ft/s 36.0G 1,954ft 10.9s 10s
OK Contrail I221 5.99lb 78ft/s 375ft/s 17.0G 2,218ft 11.9s 10s
OK AeroTech I218 5.24lb 65ft/s 395ft/s 11.3G 2,234ft 11.9s 10s
OK AeroTech H170 5.15lb 53ft/s 386ft/s 8.1G 2,244ft 12.2s 10s
OK AeroTech I180 5.27lb 72ft/s 384ft/s 14.5G 2,299ft 12.1s 10s
OK AeroTech H550 5.13lb 101ft/s 431ft/s 27.6G 2,316ft 11.7s 11s
OK AeroTech H550 5.12lb 102ft/s 435ft/s 27.8G 2,342ft 11.8s 11s
warningsW Cesaroni H565 5.22lb 96ft/s 437ft/s 27.9G 2,354ft 11.8s 11s
OK AeroTech I161 5.23lb 55ft/s 391ft/s 8.5G 2,361ft 12.5s 10s
OK AeroTech H999 5.15lb 136ft/s 450ft/s 69.2G 2,409ft 11.8s 12s
OK Cesaroni I180 5.29lb 50ft/s 409ft/s 8.3G 2,418ft 12.6s 11s
OK AeroTech I140 5.20lb 50ft/s 389ft/s 6.8G 2,423ft 12.8s 10s
OK AeroTech I225 5.49lb 55ft/s 428ft/s 10.7G 2,583ft 12.8s 11s
OK AeroTech I245 5.22lb 76ft/s 438ft/s 16.9G 2,634ft 12.7s 11s
OK Cesaroni I212 5.47lb 55ft/s 439ft/s 9.9G 2,640ft 13.0s 11s
OK AeroTech I357 5.18lb 75ft/s 449ft/s 15.5G 2,672ft 12.8s 11s
OK Contrail I747 6.27lb 151ft/s 486ft/s 67.1G 2,893ft 12.9s 13s
OK Cesaroni I566 5.27lb 95ft/s 502ft/s 26.9G 2,914ft 13.0s 12s
OK Contrail I250 6.02lb 75ft/s 454ft/s 20.4G 2,954ft 13.5s 12s
OK Cesaroni I195 5.34lb 55ft/s 473ft/s 9.0G 3,043ft 13.9s 12s
OK Cesaroni I175 5.38lb 52ft/s 478ft/s 7.3G 3,169ft 14.3s 12s
OK Cesaroni I170 5.28lb 54ft/s 484ft/s 8.7G 3,178ft 14.2s 12s
OK Cesaroni I345 5.29lb 75ft/s 516ft/s 15.6G 3,184ft 13.8s 13s
OK AeroTech I285 5.51lb 70ft/s 505ft/s 14.5G 3,200ft 13.9s 12s
OK Cesaroni I236 5.30lb 63ft/s 510ft/s 12.2G 3,316ft 14.3s 12s
OK Cesaroni I800 5.43lb 109ft/s 558ft/s 38.2G 3,361ft 13.8s 13s
OK AeroTech I195 5.68lb 68ft/s 500ft/s 13.4G 3,415ft 14.5s 12s
OK Cesaroni I223 5.51lb 57ft/s 517ft/s 9.8G 3,416ft 14.6s 13s
OK AeroTech I211 5.42lb 66ft/s 503ft/s 12.3G 3,417ft 14.5s 12s
OK AeroTech I305 5.70lb 71ft/s 523ft/s 15.5G 3,421ft 14.2s 13s
OK AeroTech I1299 5.35lb 151ft/s 580ft/s 64.0G 3,500ft 13.9s 14s
OK AeroTech I300 5.39lb 78ft/s 536ft/s 18.4G 3,515ft 14.4s 13s
OK Loki I316 5.61lb 87ft/s 561ft/s 19.3G 3,798ft 14.8s 13s
OK Cesaroni I287 5.75lb 63ft/s 577ft/s 13.0G 3,911ft 15.3s 14s
OK Loki I210 5.61lb 75ft/s 548ft/s 16.7G 3,959ft 15.3s 13s
OK Contrail I155 6.02lb 53ft/s 518ft/s 7.3G 4,059ft 16.3s 13s
OK Loki I405 5.62lb 101ft/s 606ft/s 31.2G 4,099ft 15.2s 14s
OK Cesaroni I285 5.54lb 69ft/s 609ft/s 13.3G 4,256ft 15.8s 14s
OK Cesaroni I255 5.56lb 65ft/s 608ft/s 11.9G 4,310ft 16.0s 14s
OK Loki I377 5.65lb 92ft/s 624ft/s 25.2G 4,344ft 15.7s 14s
OK Loki I430 5.61lb 80ft/s 648ft/s 20.3G 4,384ft 15.7s 15s
OK AeroTech I327 5.80lb 77ft/s 635ft/s 15.7G 4,449ft 16.0s 14s
OK AMW I297 5.72lb 69ft/s 631ft/s 13.7G 4,467ft 16.1s 14s
OK AeroTech I364 5.91lb 70ft/s 636ft/s 15.4G 4,483ft 16.0s 14s
OK AeroTech I366 5.64lb 84ft/s 648ft/s 18.5G 4,507ft 16.0s 15s
OK Cesaroni I125 5.85lb 53ft/s 535ft/s 9.3G 4,550ft 17.2s 13s
OK Cesaroni I303 5.52lb 73ft/s 646ft/s 15.8G 4,598ft 16.2s 14s
OK Cesaroni I242 5.63lb 62ft/s 634ft/s 10.4G 4,619ft 16.6s 14s
OK Cesaroni I470 5.51lb 86ft/s 683ft/s 21.7G 4,634ft 16.0s 15s
OK AeroTech I280 5.78lb 69ft/s 646ft/s 12.1G 4,637ft 16.4s 14s
OK Cesaroni I350 6.14lb 73ft/s 673ft/s 14.0G 4,841ft 16.7s 15s
OK KBA I301 6.02lb 67ft/s 696ft/s 14.5G 4,890ft 16.6s 15s
OK AeroTech I435 5.56lb 104ft/s 703ft/s 29.6G 4,926ft 16.4s 15s
OK KBA I550 5.99lb 89ft/s 761ft/s 27.1G 5,012ft 16.3s 15s
OK AeroTech I284 5.64lb 82ft/s 688ft/s 18.6G 5,017ft 16.7s 15s
OK AeroTech I500 5.69lb 89ft/s 758ft/s 22.2G 5,392ft 17.1s 16s
OK Loki J396 6.08lb 72ft/s 740ft/s 19.9G 5,409ft 17.3s 16s
OK KBA J520 6.01lb 89ft/s 756ft/s 25.6G 5,410ft 17.2s 16s
OK Cesaroni I216 5.74lb 62ft/s 680ft/s 12.3G 5,425ft 17.8s 15s
warningsW Cesaroni I540 5.74lb 96ft/s 782ft/s 24.3G 5,500ft 17.2s 16s
OK AeroTech I600 5.75lb 107ft/s 780ft/s 31.1G 5,520ft 17.1s 16s
OK Cesaroni J335 5.80lb 73ft/s 746ft/s 15.0G 5,538ft 17.6s 16s
OK AeroTech J420 5.85lb 85ft/s 762ft/s 20.6G 5,545ft 17.4s 16s
OK AeroTech I350 5.78lb 79ft/s 769ft/s 18.5G 5,562ft 17.5s 16s
OK Cesaroni J381 5.94lb 79ft/s 755ft/s 18.2G 5,562ft 17.5s 16s
OK Cesaroni J270 5.86lb 64ft/s 731ft/s 10.9G 5,572ft 17.9s 15s
OK AeroTech J350 5.89lb 102ft/s 762ft/s 30.4G 5,587ft 17.3s 16s
OK Cesaroni J285 5.73lb 71ft/s 735ft/s 13.8G 5,601ft 17.7s 15s
OK KBA J740 6.02lb 107ft/s 798ft/s 36.6G 5,609ft 17.2s 16s
OK Cesaroni J316 5.76lb 72ft/s 737ft/s 16.1G 5,620ft 17.7s 16s
OK AeroTech J340 5.69lb 84ft/s 760ft/s 22.7G 5,629ft 17.5s 15s
OK Cesaroni J357 5.74lb 79ft/s 774ft/s 19.1G 5,704ft 17.7s 16s
OK AeroTech J520 6.09lb 112ft/s 770ft/s 32.2G 5,712ft 17.5s 16s
OK Cesaroni J290 5.87lb 71ft/s 763ft/s 14.0G 5,873ft 18.1s 16s
OK AeroTech J425 5.81lb 74ft/s 813ft/s 17.3G 5,899ft 17.9s 16s
OK Loki J474 6.09lb 114ft/s 781ft/s 43.2G 5,948ft 17.8s 16s
OK Cesaroni J400 5.97lb 79ft/s 802ft/s 17.7G 5,970ft 18.0s 16s
OK AeroTech J270 5.84lb 71ft/s 773ft/s 12.9G 6,068ft 18.4s 16s
OK Loki J326 6.11lb 92ft/s 774ft/s 34.9G 6,256ft 18.5s 16s
OK AeroTech J500 5.86lb 98ft/s 851ft/s 29.4G 6,262ft 18.1s 17s
OK Loki J528 6.06lb 110ft/s 861ft/s 36.9G 6,322ft 18.1s 17s
OK AeroTech J575 6.44lb 108ft/s 880ft/s 30.4G 6,508ft 18.3s 17s
OK Cesaroni J330 5.97lb 78ft/s 840ft/s 16.4G 6,594ft 18.8s 17s
OK Cesaroni J410 6.04lb 84ft/s 871ft/s 18.0G 6,647ft 18.8s 17s
OK Cesaroni J425 5.96lb 89ft/s 882ft/s 24.2G 6,740ft 18.7s 17s
OK AeroTech J435 5.80lb 98ft/s 898ft/s 25.8G 6,764ft 18.7s 17s
OK Loki J712 6.08lb 104ft/s 930ft/s 31.5G 6,834ft 18.7s 17s
OK Loki J320 6.08lb 78ft/s 856ft/s 18.6G 6,908ft 19.3s 17s
OK Cesaroni J354 6.14lb 80ft/s 877ft/s 18.1G 6,967ft 19.2s 17s
OK Cesaroni J520 6.29lb 87ft/s 938ft/s 22.4G 7,101ft 19.1s 17s
OK Cesaroni J580 6.72lb 87ft/s 952ft/s 23.8G 7,272ft 19.4s 18s
OK Loki J650 6.94lb 98ft/s 972ft/s 31.1G 7,555ft 19.6s 18s
OK Cesaroni J150 6.52lb 56ft/s 757ft/s 10.2G 7,897ft 21.8s 15s
OK AeroTech J825 6.35lb 117ft/s 1,098ft/s 40.7G 8,041ft 19.7s 19s
OK Cesaroni J394 6.49lb 72ft/s 1,011ft/s 16.3G 8,122ft 20.5s 18s
OK Cesaroni J595 6.33lb 105ft/s 1,074ft/s 31.3G 8,255ft 20.1s 18s
OK Cesaroni J600 6.42lb 97ft/s 1,089ft/s 25.4G 8,299ft 20.2s 18s
OK Cesaroni J453 6.55lb 89ft/s 1,036ft/s 24.0G 8,379ft 20.5s 18s
OK Cesaroni J420 6.35lb 93ft/s 1,022ft/s 26.8G 8,414ft 20.5s 18s
OK AeroTech J570 6.41lb 116ft/s 1,056ft/s 39.5G 8,491ft 20.3s 18s
OK Cesaroni J530 6.57lb 99ft/s 1,136ft/s 26.6G 9,108ft 20.9s 19s
OK AeroTech J510 6.80lb 108ft/s 1,145ft/s 33.4G 9,366ft 21.2s 19s
OK Loki J1000 6.94lb 137ft/s 1,253ft/s 44.5G 9,599ft 21.2s 20s
OK Loki J1026 7.00lb 124ft/s 1,313ft/s 39.7G 9,956ft 21.5s 20s
OK Loki K1127 7.00lb 129ft/s 1,303ft/s 46.2G 9,996ft 21.5s 20s
OK Loki K627 7.14lb 108ft/s 1,392ft/s 30.2G 11,617ft 23.0s 20s

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 AeroTech G67 speed at end of launch guide too slow (34ft/s)
failedG Loki G69 speed at end of launch guide too slow (36ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (32ft/s)
failedG Loki G70 speed at end of launch guide too slow (37ft/s)
failedG Loki G94 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (32ft/s)
failedG Loki G80 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (31ft/s)
failedG Loki G66 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (24ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (31ft/s)
failedG Loki H100 speed at end of launch guide too slow (43ft/s)
failedG AeroTech H123 speed at end of launch guide too slow (45ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (41ft/s)
failedG Loki H90 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (44ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (40ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (32ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (45ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (26ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (45ft/s)
failedG Loki I110 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (41ft/s)

G These simulations were run with a launch guide length of 6ft (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.)

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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