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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 77 motors that fit and appear to have enough thrust (623 motors didn't fit, 105 motors failed safety checks). 179 motor had thrust curves available and 324 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:   just a yellow rocket 54 mm
Owner: Jim Fields
Body Diameter: 4.00in
Dry Weight: 20.00lb
MMT Diameter: 54.0mm
MMT Length: 30.00in
CD: 0.45

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 J1055 21.70lb 63ft/s 227ft/s 10.8G 833ft 7.5s 7s
OK AeroTech J1299 21.84lb 73ft/s 264ft/s 14.2G 1,094ft 8.5s 8s
OK AMW J1365 22.47lb 72ft/s 283ft/s 14.6G 1,245ft 9.0s 8s
OK AMW J440 22.71lb 51ft/s 292ft/s 6.9G 1,579ft 10.6s 9s
OK Cesaroni J1520 22.26lb 74ft/s 332ft/s 16.3G 1,649ft 10.3s 10s
OK AeroTech J1799 22.45lb 84ft/s 334ft/s 20.3G 1,654ft 10.2s 10s
OK Loki J820 22.67lb 57ft/s 324ft/s 9.5G 1,740ft 10.8s 9s
OK AMW J745 22.69lb 54ft/s 336ft/s 7.6G 1,851ft 11.3s 10s
OK AMW K1720 22.98lb 80ft/s 359ft/s 18.3G 1,888ft 10.9s 10s
OK AeroTech J800 22.39lb 55ft/s 353ft/s 8.5G 2,067ft 11.9s 10s
OK Cesaroni J760 22.37lb 52ft/s 361ft/s 8.0G 2,097ft 11.9s 10s
OK KBA K700 23.31lb 49ft/s 396ft/s 8.0G 2,463ft 12.9s 11s
OK AeroTech K2050 22.85lb 83ft/s 429ft/s 20.3G 2,566ft 12.6s 12s
OK AeroTech K695 23.28lb 49ft/s 403ft/s 7.8G 2,633ft 13.4s 11s
OK Cesaroni K2045 22.84lb 85ft/s 438ft/s 21.2G 2,639ft 12.8s 12s
OK AMW K935 23.32lb 58ft/s 441ft/s 9.5G 2,920ft 13.8s 12s
OK AeroTech K540 22.81lb 49ft/s 414ft/s 7.4G 2,965ft 14.3s 11s
OK AeroTech K1100 22.95lb 66ft/s 455ft/s 12.1G 3,068ft 14.0s 12s
OK Cesaroni K940 23.01lb 59ft/s 466ft/s 9.8G 3,195ft 14.4s 13s
OK AMW K855 24.68lb 52ft/s 460ft/s 8.7G 3,199ft 14.6s 13s
OK Cesaroni K630 23.11lb 48ft/s 448ft/s 6.7G 3,226ft 14.9s 12s
OK Gorilla K763 23.95lb 49ft/s 462ft/s 7.3G 3,255ft 14.9s 13s
OK AMW K710 23.99lb 52ft/s 460ft/s 7.2G 3,405ft 15.1s 12s
OK AeroTech K805 23.40lb 52ft/s 473ft/s 7.7G 3,407ft 15.1s 13s
OK AMW K670 24.16lb 51ft/s 464ft/s 6.7G 3,416ft 15.2s 13s
OK Gorilla K805 23.91lb 51ft/s 477ft/s 9.5G 3,446ft 15.1s 13s
OK AMW K580 24.02lb 52ft/s 458ft/s 9.1G 3,561ft 15.6s 12s
OK AeroTech K990 24.65lb 55ft/s 502ft/s 9.0G 3,667ft 15.5s 13s
OK AeroTech K850 24.50lb 53ft/s 505ft/s 9.2G 3,692ft 15.5s 13s
OK AeroTech K1103 23.22lb 69ft/s 518ft/s 14.6G 3,765ft 15.4s 14s
OK Cesaroni K740 23.24lb 54ft/s 503ft/s 7.5G 3,814ft 15.9s 13s
OK Cesaroni K635 23.90lb 49ft/s 507ft/s 6.3G 4,035ft 16.6s 14s
OK Cesaroni K675 24.28lb 48ft/s 511ft/s 7.4G 4,069ft 16.6s 14s
OK Loki K960 23.85lb 67ft/s 535ft/s 13.5G 4,073ft 16.0s 14s
OK AMW K1250 24.00lb 71ft/s 545ft/s 14.1G 4,075ft 15.9s 14s
OK Cesaroni K650 23.77lb 51ft/s 512ft/s 10.6G 4,130ft 16.7s 13s
OK Gorilla K980 25.42lb 58ft/s 551ft/s 10.8G 4,319ft 16.6s 14s
OK Cesaroni K570 23.71lb 52ft/s 513ft/s 7.5G 4,332ft 17.1s 13s
OK Cesaroni K1200 23.60lb 67ft/s 574ft/s 12.1G 4,380ft 16.5s 15s
OK AeroTech K828 24.90lb 58ft/s 551ft/s 10.8G 4,391ft 16.8s 14s
OK AeroTech K375 24.64lb 63ft/s 474ft/s 11.3G 4,548ft 18.0s 12s
OK AeroTech K1275 24.38lb 70ft/s 586ft/s 13.4G 4,609ft 16.9s 15s
OK Cesaroni K780 23.75lb 55ft/s 566ft/s 8.5G 4,618ft 17.3s 15s
OK AMW K1075 25.82lb 59ft/s 580ft/s 10.5G 4,632ft 17.1s 15s
OK AeroTech K480 24.58lb 51ft/s 535ft/s 7.3G 4,848ft 18.2s 13s
OK AeroTech K700 24.49lb 57ft/s 567ft/s 8.8G 4,946ft 17.9s 14s
OK Cesaroni K815 24.84lb 50ft/s 595ft/s 9.9G 5,000ft 18.0s 15s
OK Cesaroni K750 24.53lb 52ft/s 590ft/s 7.8G 5,068ft 18.1s 15s
OK Loki K350 25.60lb 50ft/s 482ft/s 9.7G 5,118ft 19.7s 13s
OK Cesaroni K711 24.85lb 53ft/s 588ft/s 12.7G 5,180ft 18.4s 15s
OK Gorilla K1075 25.60lb 58ft/s 626ft/s 10.4G 5,209ft 18.0s 16s
OK Gorilla K470 25.13lb 53ft/s 530ft/s 8.5G 5,222ft 18.8s 14s
OK Cesaroni K820 24.37lb 57ft/s 615ft/s 14.2G 5,355ft 18.4s 15s
OK Cesaroni K590 24.40lb 70ft/s 567ft/s 15.7G 5,388ft 18.8s 14s
OK KBA K750 25.81lb 56ft/s 612ft/s 9.3G 5,482ft 18.8s 15s
OK Cesaroni K1440 24.17lb 78ft/s 668ft/s 16.6G 5,489ft 18.1s 16s
OK Cesaroni K660 24.30lb 58ft/s 604ft/s 9.0G 5,502ft 18.9s 15s
OK Gorilla K1185 25.60lb 60ft/s 657ft/s 11.6G 5,505ft 18.4s 16s
OK KBA K1750 25.65lb 73ft/s 677ft/s 18.9G 5,512ft 18.1s 17s
OK AMW K1130 25.67lb 64ft/s 657ft/s 12.6G 5,654ft 18.6s 16s
OK AeroTech K1050 24.86lb 64ft/s 666ft/s 12.3G 5,762ft 18.8s 16s
OK AMW L1276 26.53lb 63ft/s 690ft/s 12.2G 5,972ft 19.1s 17s
OK AMW L985 25.67lb 64ft/s 672ft/s 11.9G 6,036ft 19.3s 17s
OK AeroTech L1090 25.36lb 62ft/s 685ft/s 10.7G 6,177ft 19.5s 17s
OK KBA L2300 25.80lb 92ft/s 750ft/s 25.4G 6,301ft 19.0s 18s
OK AeroTech L1000 24.84lb 64ft/s 701ft/s 11.0G 6,348ft 19.6s 17s
OK Cesaroni L640 24.95lb 69ft/s 635ft/s 13.0G 6,424ft 20.2s 15s
OK Cesaroni L730 24.95lb 60ft/s 669ft/s 10.0G 6,454ft 20.1s 16s
OK Cesaroni L990 24.93lb 65ft/s 711ft/s 13.7G 6,533ft 19.9s 17s
OK Cesaroni L1030 25.15lb 60ft/s 728ft/s 12.8G 6,596ft 20.1s 17s
OK Cesaroni L805 25.52lb 58ft/s 694ft/s 12.0G 6,629ft 20.4s 17s
OK Loki L1400 25.60lb 70ft/s 753ft/s 16.5G 6,684ft 19.8s 18s
OK Cesaroni L935 25.60lb 63ft/s 761ft/s 12.5G 7,377ft 21.1s 18s
OK Loki L1040 26.53lb 62ft/s 890ft/s 11.1G 9,131ft 23.1s 19s
warningsD AMW K590 23.79lb 6:1 thrust/weight ratio (no data)
warningsD Gorilla K695 23.30lb 7:1 thrust/weight ratio (no data)
warningsD Gorilla K828 24.05lb 8:1 thrust/weight ratio (no data)

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 AeroTech I117 speed at end of launch guide too slow (15ft/s)
failedG Cesaroni I140 speed at end of launch guide too slow (16ft/s)
failedG AeroTech I215 speed at end of launch guide too slow (26ft/s)
failedA AeroTech I599 rocket doesn't reach a safe altitude (256ft)
failedG AeroTech I229 speed at end of launch guide too slow (26ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (15ft/s)
failedG AeroTech I170 speed at end of launch guide too slow (21ft/s)
failedG Cesaroni I150 speed at end of launch guide too slow (18ft/s)
failedG Cesaroni I445 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni I218 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni I120 speed at end of launch guide too slow (14ft/s)
failedG Cesaroni I165 speed at end of launch guide too slow (19ft/s)
failedG Cesaroni I100 speed at end of launch guide too slow (22ft/s)
failedG AeroTech I65 speed at end of launch guide too slow (17ft/s)
failedG Contrail J245 speed at end of launch guide too slow (30ft/s)
failedG Hypertek J115 speed at end of launch guide too slow (21ft/s)
failedG Contrail J355 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni J250 speed at end of launch guide too slow (24ft/s)
failedG Cesaroni J145 speed at end of launch guide too slow (24ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (30ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (17ft/s)
failedG Cesaroni J280 speed at end of launch guide too slow (27ft/s)
failedG Hypertek J170 speed at end of launch guide too slow (29ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (24ft/s)
failedG Contrail J292 speed at end of launch guide too slow (38ft/s)
failedG Hypertek J250 speed at end of launch guide too slow (33ft/s)
failedG Hypertek J120 speed at end of launch guide too slow (23ft/s)
failedG AeroTech J315 speed at end of launch guide too slow (32ft/s)
failedG AeroTech J180 speed at end of launch guide too slow (30ft/s)
failedG AeroTech J275 speed at end of launch guide too slow (28ft/s)
failedG Hypertek J270 speed at end of launch guide too slow (38ft/s)
failedG AeroTech J460 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni J240 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni J430 speed at end of launch guide too slow (38ft/s)
failedG Hypertek J190 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni J210 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni J293 speed at end of launch guide too slow (29ft/s)
failedG Gorilla J365 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni J244 speed at end of launch guide too slow (25ft/s)
failedG Loki J350 speed at end of launch guide too slow (31ft/s)
failedG Gorilla J167 speed at end of launch guide too slow (30ft/s)
failedG AMW J400 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni J360 speed at end of launch guide too slow (31ft/s)
failedG Gorilla J465 speed at end of launch guide too slow (36ft/s)
failedG AMW J475 speed at end of launch guide too slow (38ft/s)
failedG Gorilla J395 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni J380 speed at end of launch guide too slow (31ft/s)
failedG AeroTech J450 speed at end of launch guide too slow (37ft/s)
failedG Gorilla J485 speed at end of launch guide too slow (38ft/s)
failedG AeroTech J135 speed at end of launch guide too slow (22ft/s)
failedG AMW J395 speed at end of launch guide too slow (36ft/s)
failedG AMW J325 speed at end of launch guide too slow (38ft/s)
failedG Loki J525 speed at end of launch guide too slow (42ft/s)
failedG Gorilla J535 speed at end of launch guide too slow (45ft/s)
failedG AeroTech J401 speed at end of launch guide too slow (38ft/s)
failedG Gorilla J450 speed at end of launch guide too slow (35ft/s)
failedG Loki J175 speed at end of launch guide too slow (31ft/s)
failedG AeroTech J540 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni J355 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni J295 speed at end of launch guide too slow (35ft/s)
failedG Loki J300 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni J140 speed at end of launch guide too slow (20ft/s)
failedG AeroTech J415 speed at end of launch guide too slow (38ft/s)
failedG AMW J475 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni J449 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni K360 speed at end of launch guide too slow (32ft/s)
failedG AeroTech K456 speed at end of launch guide too slow (36ft/s)
failedG AeroTech K400 speed at end of launch guide too slow (40ft/s)
failedG Gorilla K222 speed at end of launch guide too slow (33ft/s)
failedG Gorilla K520 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni K454 speed at end of launch guide too slow (38ft/s)
failedG AMW K665 speed at end of launch guide too slow (45ft/s)
failedG Gorilla K555 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni K530 speed at end of launch guide too slow (38ft/s)
failedG Gorilla K630 speed at end of launch guide too slow (45ft/s)
failedG AeroTech K185 speed at end of launch guide too slow (27ft/s)
failedG Gorilla K533 speed at end of launch guide too slow (39ft/s)
failedG AeroTech K535 speed at end of launch guide too slow (45ft/s)
failedG AMW K535 speed at end of launch guide too slow (43ft/s)
failedG AMW K455 speed at end of launch guide too slow (47ft/s)
failedG AeroTech K513 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni K160 speed at end of launch guide too slow (24ft/s)
failedG AMW K610 speed at end of launch guide too slow (45ft/s)
failedG AeroTech K550 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni K500 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni K400 speed at end of launch guide too slow (37ft/s)
failedG Loki K250 speed at end of launch guide too slow (37ft/s)
failedG Gorilla K327 speed at end of launch guide too slow (41ft/s)
failedG Loki K690 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni K445 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni K515 speed at end of launch guide too slow (42ft/s)
failedG AMW K700 speed at end of launch guide too slow (47ft/s)
failedG Gorilla K700 speed at end of launch guide too slow (48ft/s)
failedG Cesaroni K520 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni K650 speed at end of launch guide too slow (44ft/s)
failedG AeroTech K270 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni K490 speed at end of launch guide too slow (41ft/s)
failedG Loki K527 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni K261 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni K600 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni K260 speed at end of launch guide too slow (33ft/s)
failedG Loki K830 speed at end of launch guide too slow (46ft/s)
failedG AeroTech K250 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni K300 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni L265 speed at end of launch guide too slow (33ft/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.)

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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