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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 120 motors that fit and appear to have enough thrust (640 motors didn't fit, 43 motors failed safety checks). 160 motor had thrust curves available and 289 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:   Rapiditty
Owner: Wayne Comfort
Body Diameter: 4.00in
Dry Weight: 13.00lb
MMT Diameter: 54.0mm
MMT Length: 26.00in
CD: 0.40

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 I599 14.13lb 75ft/s 190ft/s 11.2G 588ft 6.3s 6s
OK Cesaroni I445 14.27lb 58ft/s 210ft/s 7.4G 753ft 7.3s 6s
OK Hypertek J250 15.85lb 48ft/s 228ft/s 4.8G 1,158ft 9.4s 6s
OK Hypertek J270 15.86lb 54ft/s 267ft/s 6.0G 1,524ft 10.6s 7s
OK AeroTech J315 14.88lb 48ft/s 290ft/s 4.8G 1,566ft 10.8s 8s
OK Cesaroni J1055 14.70lb 89ft/s 347ft/s 16.5G 1,721ft 10.4s 10s
OK Cesaroni J430 14.76lb 55ft/s 344ft/s 7.0G 1,917ft 11.5s 10s
OK AeroTech J460 14.74lb 60ft/s 355ft/s 7.5G 2,040ft 11.8s 10s
OK AeroTech J1299 14.84lb 102ft/s 401ft/s 21.5G 2,173ft 11.5s 11s
OK AMW J1365 15.47lb 103ft/s 424ft/s 21.8G 2,397ft 12.1s 11s
OK AMW J475 16.11lb 54ft/s 408ft/s 7.9G 2,562ft 13.2s 11s
OK Gorilla J395 15.56lb 48ft/s 404ft/s 5.8G 2,596ft 13.6s 11s
OK Gorilla J465 15.61lb 52ft/s 419ft/s 8.8G 2,681ft 13.5s 11s
OK AeroTech J450 15.70lb 53ft/s 421ft/s 6.9G 2,716ft 13.6s 11s
OK AMW J395 15.80lb 52ft/s 410ft/s 5.7G 2,740ft 13.9s 11s
OK AMW J325 15.71lb 54ft/s 391ft/s 6.7G 2,762ft 14.0s 11s
OK Gorilla J485 15.62lb 55ft/s 437ft/s 7.4G 2,840ft 13.8s 12s
OK Gorilla J450 16.21lb 51ft/s 430ft/s 7.6G 2,849ft 14.0s 11s
OK AMW J440 15.71lb 71ft/s 446ft/s 10.5G 3,011ft 13.9s 12s
OK Gorilla J535 15.70lb 63ft/s 455ft/s 8.7G 3,020ft 14.0s 12s
OK Loki J525 15.73lb 60ft/s 460ft/s 8.7G 3,035ft 14.1s 12s
OK AeroTech J1799 15.45lb 118ft/s 498ft/s 30.1G 3,056ft 13.4s 13s
OK Cesaroni J1520 15.26lb 106ft/s 499ft/s 24.5G 3,077ft 13.5s 13s
OK AeroTech J401 15.01lb 55ft/s 447ft/s 6.2G 3,087ft 14.5s 12s
OK Gorilla K222 16.52lb 48ft/s 364ft/s 4.8G 3,218ft 16.0s 9s
OK Cesaroni J355 15.59lb 50ft/s 443ft/s 5.3G 3,223ft 15.1s 12s
OK Loki J820 15.67lb 81ft/s 488ft/s 14.3G 3,231ft 14.1s 13s
OK Cesaroni J295 15.47lb 51ft/s 423ft/s 5.4G 3,238ft 15.3s 11s
OK AeroTech J540 15.39lb 65ft/s 475ft/s 8.9G 3,250ft 14.5s 12s
OK AMW J475 16.29lb 58ft/s 462ft/s 7.1G 3,303ft 14.9s 12s
OK AMW K1720 15.98lb 112ft/s 530ft/s 27.0G 3,393ft 14.1s 13s
OK AMW J745 15.69lb 74ft/s 508ft/s 11.6G 3,433ft 14.6s 13s
OK Cesaroni K360 15.72lb 48ft/s 481ft/s 4.9G 3,617ft 15.9s 12s
OK AeroTech J415 15.58lb 54ft/s 486ft/s 7.0G 3,642ft 15.6s 12s
OK AeroTech K456 16.27lb 53ft/s 497ft/s 6.2G 3,656ft 15.7s 13s
OK Cesaroni J449 15.47lb 56ft/s 503ft/s 7.2G 3,669ft 15.6s 13s
OK AeroTech K400 15.63lb 58ft/s 493ft/s 6.8G 3,772ft 15.9s 13s
OK AeroTech J800 15.39lb 79ft/s 536ft/s 12.9G 3,786ft 15.3s 13s
OK AMW K665 16.83lb 65ft/s 534ft/s 10.5G 3,825ft 15.5s 14s
OK Cesaroni J760 15.37lb 75ft/s 549ft/s 12.1G 3,838ft 15.3s 14s
OK Cesaroni K454 16.07lb 54ft/s 521ft/s 6.7G 3,961ft 16.2s 13s
OK Gorilla K520 16.18lb 55ft/s 536ft/s 7.6G 3,969ft 16.1s 14s
OK Gorilla K555 16.48lb 56ft/s 542ft/s 8.1G 4,011ft 16.1s 14s
OK Gorilla K533 16.78lb 56ft/s 544ft/s 8.6G 4,110ft 16.3s 14s
OK Cesaroni K530 16.62lb 55ft/s 551ft/s 7.5G 4,122ft 16.4s 14s
OK Gorilla K630 16.44lb 63ft/s 561ft/s 10.3G 4,158ft 16.1s 14s
OK AMW K535 16.44lb 60ft/s 550ft/s 7.8G 4,205ft 16.5s 14s
OK KBA K700 16.31lb 71ft/s 590ft/s 12.0G 4,324ft 16.2s 14s
OK AeroTech K513 16.63lb 59ft/s 569ft/s 8.2G 4,357ft 16.7s 14s
OK AeroTech K535 15.79lb 63ft/s 562ft/s 8.1G 4,367ft 16.7s 14s
OK AeroTech K2050 15.85lb 123ft/s 633ft/s 30.1G 4,388ft 15.8s 15s
OK AMW K455 16.32lb 65ft/s 544ft/s 9.7G 4,406ft 16.8s 14s
OK Cesaroni K2045 15.84lb 118ft/s 647ft/s 31.4G 4,489ft 15.9s 15s
OK AMW K610 16.89lb 62ft/s 580ft/s 8.9G 4,499ft 16.8s 14s
OK AeroTech K695 16.28lb 69ft/s 604ft/s 11.7G 4,578ft 16.7s 14s
OK Gorilla K327 17.01lb 58ft/s 508ft/s 8.1G 4,749ft 17.9s 12s
OK Cesaroni K400 16.42lb 54ft/s 573ft/s 5.5G 4,843ft 18.1s 14s
OK Loki K250 16.95lb 53ft/s 482ft/s 9.6G 4,859ft 19.1s 12s
OK Loki K690 18.29lb 61ft/s 629ft/s 9.5G 4,907ft 17.5s 15s
OK AMW K935 16.32lb 81ft/s 651ft/s 14.1G 4,928ft 17.0s 15s
OK AMW K700 17.60lb 64ft/s 628ft/s 10.3G 4,930ft 17.4s 15s
OK Cesaroni K500 16.25lb 59ft/s 607ft/s 7.4G 4,942ft 17.8s 15s
OK AeroTech K550 16.28lb 66ft/s 607ft/s 10.4G 5,030ft 17.7s 14s
OK Cesaroni K515 16.65lb 61ft/s 616ft/s 8.1G 5,098ft 18.0s 15s
OK AeroTech K540 15.81lb 71ft/s 624ft/s 11.2G 5,102ft 17.7s 14s
OK AeroTech K1100 15.95lb 93ft/s 674ft/s 17.9G 5,128ft 17.2s 15s
OK Cesaroni K445 16.08lb 63ft/s 603ft/s 8.3G 5,156ft 18.1s 14s
OK Gorilla K700 16.78lb 66ft/s 660ft/s 9.9G 5,240ft 17.9s 16s
OK AMW K855 17.68lb 72ft/s 669ft/s 12.7G 5,245ft 17.7s 16s
OK Cesaroni K940 16.01lb 84ft/s 692ft/s 14.5G 5,322ft 17.6s 16s
OK Gorilla K763 16.95lb 70ft/s 681ft/s 10.9G 5,406ft 18.1s 16s
OK Cesaroni K520 16.47lb 60ft/s 645ft/s 7.4G 5,411ft 18.5s 15s
OK Cesaroni K650 17.39lb 61ft/s 672ft/s 9.0G 5,412ft 18.3s 16s
OK Cesaroni K630 16.11lb 69ft/s 671ft/s 10.0G 5,440ft 18.2s 15s
OK AMW K710 16.99lb 73ft/s 674ft/s 10.7G 5,586ft 18.3s 16s
OK Gorilla K805 16.91lb 69ft/s 699ft/s 14.0G 5,617ft 18.2s 16s
OK AMW K670 17.16lb 72ft/s 681ft/s 9.9G 5,621ft 18.4s 16s
OK AeroTech K805 16.40lb 72ft/s 701ft/s 11.4G 5,628ft 18.3s 16s
OK AMW K580 17.02lb 73ft/s 671ft/s 13.2G 5,826ft 18.7s 16s
OK AeroTech K990 17.65lb 76ft/s 728ft/s 13.1G 5,851ft 18.5s 16s
OK AeroTech K850 17.50lb 73ft/s 734ft/s 13.4G 5,889ft 18.5s 16s
OK AeroTech K1103 16.22lb 95ft/s 760ft/s 21.3G 6,005ft 18.3s 17s
OK Cesaroni K740 16.24lb 74ft/s 744ft/s 11.2G 6,165ft 18.9s 16s
OK Loki K527 17.35lb 64ft/s 700ft/s 8.8G 6,291ft 19.7s 16s
OK AMW K1250 17.00lb 96ft/s 788ft/s 20.3G 6,332ft 18.8s 17s
OK Loki K960 16.85lb 98ft/s 776ft/s 19.5G 6,370ft 18.9s 17s
OK Cesaroni K490 17.09lb 58ft/s 706ft/s 6.9G 6,398ft 20.1s 16s
OK Cesaroni K675 17.28lb 68ft/s 745ft/s 10.8G 6,447ft 19.5s 16s
OK Cesaroni K635 16.90lb 67ft/s 746ft/s 9.3G 6,455ft 19.6s 17s
OK Cesaroni K650 16.77lb 73ft/s 751ft/s 15.5G 6,546ft 19.6s 16s
OK AeroTech K828 17.90lb 80ft/s 793ft/s 15.4G 6,727ft 19.6s 17s
OK Cesaroni K1200 16.60lb 92ft/s 838ft/s 17.6G 6,744ft 19.2s 18s
OK Cesaroni K570 16.71lb 74ft/s 751ft/s 11.1G 6,838ft 20.1s 16s
OK Cesaroni K600 17.17lb 67ft/s 771ft/s 9.2G 6,943ft 20.3s 17s
OK AeroTech K1275 17.38lb 98ft/s 842ft/s 19.3G 6,945ft 19.5s 18s
OK Cesaroni K780 16.75lb 78ft/s 827ft/s 12.4G 7,098ft 20.1s 17s
OK AeroTech K375 17.64lb 91ft/s 692ft/s 16.2G 7,182ft 21.1s 15s
OK Cesaroni K260 17.51lb 49ft/s 620ft/s 4.6G 7,234ft 22.5s 14s
OK AeroTech K480 17.58lb 69ft/s 772ft/s 10.7G 7,424ft 20.9s 16s
OK AeroTech K700 17.49lb 78ft/s 813ft/s 12.8G 7,435ft 20.5s 17s
OK Cesaroni K815 17.84lb 70ft/s 854ft/s 14.1G 7,495ft 20.6s 18s
OK Cesaroni K750 17.53lb 73ft/s 849ft/s 11.4G 7,592ft 20.7s 18s
OK Cesaroni K711 17.85lb 73ft/s 843ft/s 18.1G 7,741ft 21.1s 18s
OK Cesaroni K820 17.37lb 79ft/s 879ft/s 20.4G 7,903ft 20.9s 18s
OK Cesaroni K1440 17.17lb 105ft/s 957ft/s 23.9G 7,940ft 20.4s 19s
OK Cesaroni K590 17.40lb 95ft/s 809ft/s 22.4G 8,042ft 21.4s 17s
OK Cesaroni K660 17.30lb 81ft/s 865ft/s 13.1G 8,136ft 21.4s 18s
OK Cesaroni K300 18.00lb 54ft/s 691ft/s 5.8G 8,187ft 23.3s 15s
OK AeroTech K1050 17.86lb 92ft/s 946ft/s 17.5G 8,289ft 21.2s 19s
OK AeroTech L1090 18.36lb 84ft/s 962ft/s 15.2G 8,733ft 21.7s 19s
OK AeroTech L1000 17.84lb 87ft/s 990ft/s 15.7G 8,914ft 21.7s 19s
OK Cesaroni L990 17.93lb 88ft/s 1,000ft/s 19.4G 9,132ft 22.0s 19s
OK Cesaroni L730 17.95lb 82ft/s 941ft/s 14.2G 9,141ft 22.4s 19s
OK Cesaroni L640 17.95lb 93ft/s 888ft/s 18.4G 9,174ft 22.5s 18s
OK Cesaroni L1030 18.15lb 82ft/s 1,027ft/s 18.1G 9,187ft 22.1s 19s
OK Cesaroni L805 18.52lb 79ft/s 972ft/s 16.9G 9,275ft 22.5s 19s
OK Cesaroni L935 18.60lb 89ft/s 1,057ft/s 17.6G 10,025ft 22.9s 20s
warningsD AMW K590 16.79lb 8:1 thrust/weight ratio (no data)
warningsD Gorilla K695 16.30lb 10:1 thrust/weight ratio (no data)
warningsD Gorilla K828 17.05lb 11:1 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 (24ft/s)
failedG Cesaroni I140 speed at end of launch guide too slow (27ft/s)
failedG AeroTech I215 speed at end of launch guide too slow (40ft/s)
failedG AeroTech I229 speed at end of launch guide too slow (40ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (25ft/s)
failedG AeroTech I170 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni I150 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni I218 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni I120 speed at end of launch guide too slow (25ft/s)
failedG Cesaroni I165 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni I100 speed at end of launch guide too slow (35ft/s)
failedG AeroTech I65 speed at end of launch guide too slow (29ft/s)
failedG Hypertek J115 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni J250 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni J145 speed at end of launch guide too slow (38ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (45ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni J280 speed at end of launch guide too slow (40ft/s)
failedG Hypertek J170 speed at end of launch guide too slow (44ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (38ft/s)
failedG Hypertek J120 speed at end of launch guide too slow (36ft/s)
failedG AeroTech J180 speed at end of launch guide too slow (45ft/s)
failedG AeroTech J275 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni J240 speed at end of launch guide too slow (40ft/s)
failedG Hypertek J190 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni J210 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni J293 speed at end of launch guide too slow (43ft/s)
failedG Gorilla J365 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni J244 speed at end of launch guide too slow (37ft/s)
failedG Loki J350 speed at end of launch guide too slow (46ft/s)
failedG Gorilla J167 speed at end of launch guide too slow (44ft/s)
failedG AMW J400 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni J360 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni J380 speed at end of launch guide too slow (46ft/s)
failedG AeroTech J135 speed at end of launch guide too slow (34ft/s)
failedG Loki J175 speed at end of launch guide too slow (46ft/s)
failedG Loki J300 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni J140 speed at end of launch guide too slow (31ft/s)
failedG AeroTech K185 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni K160 speed at end of launch guide too slow (36ft/s)
failedG AeroTech K270 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni K261 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni L265 speed at end of launch guide too slow (47ft/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.)

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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