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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 165 motors that fit and appear to have enough thrust (627 motors didn't fit, 19 motors failed safety checks). 181 motor had thrust curves available and 329 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:   Optima XXL 5.5 54mm
Owner: Jim Lane
Body Diameter: 5.54in
Dry Weight: 137.0oz
MMT Diameter: 54.0mm
MMT Length: 34.00in
CD: 0.52

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 I215 155.6oz 50ft/s 231ft/s 5.0G 869ft 7.9s 6s
OK AeroTech I229 155.1oz 51ft/s 247ft/s 5.4G 942ft 8.1s 6s
OK AeroTech I599 155.1oz 92ft/s 283ft/s 16.7G 972ft 7.6s 7s
OK Cesaroni I445 157.3oz 68ft/s 312ft/s 11.1G 1,192ft 8.5s 7s
OK Cesaroni I218 157.5oz 50ft/s 277ft/s 5.0G 1,196ft 9.1s 7s
OK Contrail J245 191.7oz 55ft/s 294ft/s 7.2G 1,424ft 9.8s 7s
OK Contrail J355 192.2oz 61ft/s 341ft/s 9.5G 1,557ft 10.0s 8s
OK Hypertek J250 182.6oz 58ft/s 321ft/s 7.0G 1,662ft 10.4s 7s
OK Hypertek J170 182.2oz 54ft/s 292ft/s 5.9G 1,718ft 11.1s 6s
OK Contrail J292 191.4oz 68ft/s 334ft/s 9.4G 1,726ft 10.6s 8s
OK Cesaroni J280 170.7oz 50ft/s 389ft/s 5.7G 1,879ft 11.0s 9s
OK AeroTech J250 162.0oz 56ft/s 369ft/s 6.5G 1,933ft 11.1s 8s
OK Hypertek J270 182.7oz 66ft/s 364ft/s 8.7G 2,004ft 11.2s 8s
OK Cesaroni J1055 164.2oz 109ft/s 497ft/s 23.8G 2,034ft 10.3s 10s
OK AeroTech J315 167.0oz 58ft/s 407ft/s 7.1G 2,046ft 11.2s 9s
OK Hypertek J190 182.6oz 57ft/s 337ft/s 6.5G 2,078ft 11.9s 7s
OK AeroTech J180 165.5oz 55ft/s 356ft/s 6.1G 2,186ft 11.9s 7s
OK Cesaroni J240 167.9oz 50ft/s 405ft/s 5.2G 2,204ft 11.9s 9s
OK Gorilla J365 179.5oz 50ft/s 458ft/s 8.9G 2,251ft 11.7s 9s
OK Cesaroni J430 165.2oz 68ft/s 480ft/s 10.4G 2,277ft 11.4s 9s
OK Cesaroni J210 166.7oz 50ft/s 374ft/s 6.1G 2,285ft 12.4s 8s
OK AeroTech J275 167.5oz 52ft/s 409ft/s 6.2G 2,290ft 12.0s 8s
OK Cesaroni J293 166.6oz 54ft/s 439ft/s 6.7G 2,294ft 11.9s 9s
OK AeroTech J1299 166.4oz 121ft/s 567ft/s 30.8G 2,343ft 10.8s 10s
OK AeroTech J460 164.8oz 73ft/s 490ft/s 11.1G 2,349ft 11.4s 9s
OK AMW J1365 176.5oz 120ft/s 589ft/s 30.7G 2,498ft 11.2s 11s
OK Gorilla J167 179.9oz 53ft/s 350ft/s 6.4G 2,555ft 13.3s 7s
OK AMW J400 185.7oz 56ft/s 499ft/s 8.1G 2,557ft 12.2s 10s
OK Loki J350 181.4oz 55ft/s 498ft/s 7.9G 2,581ft 12.3s 10s
OK AMW J475 186.7oz 64ft/s 542ft/s 10.8G 2,711ft 12.2s 10s
OK Cesaroni J360 175.9oz 54ft/s 522ft/s 10.1G 2,759ft 12.6s 10s
OK Cesaroni J380 182.6oz 56ft/s 537ft/s 7.3G 2,796ft 12.7s 10s
OK Gorilla J465 178.7oz 62ft/s 560ft/s 12.1G 2,798ft 12.4s 10s
OK Gorilla J395 177.9oz 58ft/s 539ft/s 8.2G 2,800ft 12.6s 10s
OK AeroTech J1799 176.2oz 142ft/s 691ft/s 42.8G 2,848ft 11.6s 11s
OK AeroTech J450 180.1oz 62ft/s 559ft/s 9.7G 2,851ft 12.6s 10s
OK Cesaroni J1520 173.2oz 129ft/s 694ft/s 33.7G 2,877ft 11.7s 11s
OK AMW J395 181.7oz 64ft/s 537ft/s 8.3G 2,901ft 12.8s 10s
OK Gorilla J485 179.0oz 67ft/s 580ft/s 10.6G 2,904ft 12.5s 10s
OK Gorilla J450 188.3oz 60ft/s 564ft/s 10.5G 2,934ft 12.8s 10s
OK AMW J325 180.4oz 65ft/s 497ft/s 9.8G 2,956ft 13.0s 10s
OK Gorilla J535 180.2oz 77ft/s 603ft/s 12.5G 2,976ft 12.4s 10s
OK AMW J440 180.4oz 89ft/s 579ft/s 15.0G 2,979ft 12.4s 10s
OK Loki J525 180.7oz 74ft/s 611ft/s 11.8G 2,994ft 12.5s 11s
OK Loki J820 179.7oz 98ft/s 647ft/s 19.8G 3,024ft 12.2s 11s
OK AMW K1720 184.7oz 133ft/s 723ft/s 37.5G 3,072ft 12.0s 11s
OK AeroTech J401 169.2oz 65ft/s 584ft/s 9.2G 3,080ft 12.8s 10s
OK AeroTech J540 175.2oz 77ft/s 618ft/s 12.8G 3,100ft 12.6s 10s
OK Loki J175 181.1oz 57ft/s 425ft/s 7.4G 3,185ft 14.3s 8s
OK AMW J745 180.0oz 91ft/s 670ft/s 16.4G 3,187ft 12.6s 11s
OK Cesaroni J355 178.4oz 60ft/s 562ft/s 7.8G 3,227ft 13.4s 10s
OK AMW J475 189.7oz 68ft/s 594ft/s 10.1G 3,228ft 13.2s 10s
OK Loki J300 183.4oz 57ft/s 523ft/s 6.9G 3,278ft 13.9s 10s
OK Cesaroni J295 176.5oz 61ft/s 524ft/s 7.9G 3,299ft 13.7s 10s
OK AeroTech J800 175.3oz 94ft/s 698ft/s 18.5G 3,354ft 12.7s 11s
OK Cesaroni J760 175.0oz 88ft/s 723ft/s 17.5G 3,385ft 12.8s 11s
OK AeroTech J415 178.2oz 65ft/s 611ft/s 9.8G 3,410ft 13.4s 10s
OK Cesaroni J449 176.6oz 68ft/s 643ft/s 10.4G 3,417ft 13.3s 11s
OK AMW K665 198.3oz 76ft/s 681ft/s 13.9G 3,423ft 13.1s 11s
OK AeroTech K456 189.3oz 64ft/s 628ft/s 8.8G 3,425ft 13.5s 11s
OK Cesaroni K360 180.5oz 57ft/s 604ft/s 6.8G 3,473ft 13.9s 10s
OK Gorilla K222 193.3oz 57ft/s 443ft/s 6.9G 3,473ft 14.9s 8s
OK AeroTech K2050 182.6oz 143ft/s 856ft/s 41.7G 3,538ft 12.5s 12s
OK AeroTech K400 179.1oz 69ft/s 614ft/s 9.8G 3,547ft 13.7s 10s
OK Cesaroni K2045 182.5oz 138ft/s 879ft/s 43.3G 3,570ft 12.5s 12s
OK Gorilla K520 187.9oz 66ft/s 677ft/s 10.3G 3,585ft 13.7s 11s
OK Gorilla K555 192.6oz 69ft/s 690ft/s 11.0G 3,592ft 13.6s 11s
OK Cesaroni K454 186.1oz 64ft/s 649ft/s 9.6G 3,602ft 13.7s 11s
OK Gorilla K630 192.0oz 75ft/s 711ft/s 13.8G 3,625ft 13.4s 11s
OK AMW K475 189.6oz 66ft/s 667ft/s 9.3G 3,634ft 13.8s 11s
OK Cesaroni K530 194.8oz 65ft/s 692ft/s 9.6G 3,638ft 13.7s 11s
OK Gorilla K533 197.6oz 65ft/s 677ft/s 11.8G 3,645ft 13.7s 11s
OK KBA K700 190.0oz 82ft/s 757ft/s 15.7G 3,673ft 13.3s 11s
OK AMW K535 192.0oz 72ft/s 683ft/s 10.9G 3,719ft 13.8s 11s
OK AeroTech K185 187.6oz 49ft/s 477ft/s 5.4G 3,747ft 15.4s 8s
OK AeroTech K513 195.1oz 71ft/s 703ft/s 10.9G 3,750ft 13.7s 11s
OK AeroTech K535 181.6oz 77ft/s 690ft/s 11.7G 3,761ft 13.7s 11s
OK AeroTech K695 189.5oz 80ft/s 754ft/s 16.4G 3,783ft 13.4s 11s
OK AMW K610 199.3oz 73ft/s 716ft/s 12.5G 3,857ft 13.9s 11s
OK AMW K455 190.1oz 81ft/s 651ft/s 13.7G 3,863ft 14.0s 11s
OK AMW K935 190.2oz 95ft/s 825ft/s 19.5G 3,939ft 13.4s 12s
OK AeroTech K1100 184.1oz 111ft/s 854ft/s 25.2G 3,970ft 13.3s 12s
OK AMW K700 210.7oz 77ft/s 769ft/s 13.0G 4,017ft 14.0s 12s
OK Loki K690 221.7oz 73ft/s 772ft/s 12.5G 4,029ft 14.1s 12s
OK Cesaroni K940 185.2oz 95ft/s 874ft/s 20.5G 4,089ft 13.5s 12s
OK AeroTech K540 182.0oz 84ft/s 744ft/s 15.9G 4,091ft 13.9s 11s
OK AeroTech K550 189.5oz 77ft/s 722ft/s 14.2G 4,099ft 14.0s 11s
OK Cesaroni K500 189.1oz 68ft/s 724ft/s 10.4G 4,101ft 14.3s 11s
OK AMW K855 211.8oz 85ft/s 823ft/s 16.3G 4,124ft 13.9s 12s
OK Cesaroni K400 191.7oz 65ft/s 671ft/s 8.0G 4,175ft 14.9s 11s
OK Gorilla K700 197.5oz 77ft/s 811ft/s 13.5G 4,190ft 14.2s 12s
OK Cesaroni K515 195.3oz 70ft/s 732ft/s 11.5G 4,192ft 14.4s 11s
OK Gorilla K327 201.1oz 67ft/s 579ft/s 11.3G 4,222ft 15.1s 10s
OK Gorilla K763 200.2oz 81ft/s 837ft/s 14.8G 4,233ft 14.1s 12s
OK Cesaroni K630 186.7oz 82ft/s 810ft/s 14.2G 4,239ft 14.1s 11s
OK Cesaroni K650 207.2oz 71ft/s 814ft/s 11.2G 4,259ft 14.3s 12s
OK Cesaroni K445 186.3oz 76ft/s 699ft/s 11.9G 4,262ft 14.5s 11s
OK Gorilla K805 199.6oz 83ft/s 850ft/s 18.6G 4,293ft 14.0s 12s
OK AeroTech K805 191.4oz 87ft/s 852ft/s 15.8G 4,312ft 14.0s 12s
OK Cesaroni K520 192.6oz 72ft/s 759ft/s 10.5G 4,347ft 14.6s 11s
OK AeroTech K1103 188.5oz 117ft/s 945ft/s 29.7G 4,362ft 13.7s 12s
OK AMW K710 200.9oz 87ft/s 803ft/s 14.8G 4,374ft 14.3s 12s
OK AeroTech K850 209.0oz 86ft/s 897ft/s 17.3G 4,394ft 14.1s 12s
OK AeroTech K990 211.4oz 89ft/s 891ft/s 16.8G 4,395ft 14.1s 12s
OK AMW K670 203.5oz 82ft/s 814ft/s 13.7G 4,403ft 14.4s 12s
OK Loki K250 200.2oz 66ft/s 539ft/s 13.4G 4,503ft 16.4s 9s
OK AMW K1250 201.0oz 116ft/s 973ft/s 27.9G 4,549ft 13.9s 12s
OK AMW K580 201.3oz 87ft/s 776ft/s 18.3G 4,551ft 14.6s 11s
OK Cesaroni K740 188.8oz 89ft/s 886ft/s 15.6G 4,561ft 14.3s 12s
OK Loki K960 198.6oz 112ft/s 938ft/s 26.9G 4,597ft 14.1s 12s
OK Cesaroni K1200 194.6oz 106ft/s 1,025ft/s 24.4G 4,681ft 14.0s 12s
OK Cesaroni K675 205.4oz 78ft/s 855ft/s 14.8G 4,771ft 14.8s 12s
OK Cesaroni K635 199.4oz 77ft/s 855ft/s 12.9G 4,773ft 14.8s 12s
OK AeroTech K1275 207.1oz 113ft/s 1,004ft/s 26.3G 4,794ft 14.2s 12s
OK Gorilla K980 223.7oz 90ft/s 932ft/s 20.0G 4,796ft 14.6s 12s
OK Cesaroni K650 197.3oz 83ft/s 865ft/s 21.4G 4,796ft 14.7s 11s
OK AeroTech K828 215.4oz 92ft/s 931ft/s 20.9G 4,809ft 14.6s 12s
OK Loki K527 206.6oz 75ft/s 799ft/s 12.2G 4,853ft 15.3s 11s
OK Cesaroni K490 202.4oz 69ft/s 783ft/s 9.4G 4,913ft 15.5s 11s
OK Cesaroni K780 197.0oz 88ft/s 956ft/s 17.2G 4,949ft 14.6s 12s
OK AMW K1075 230.1oz 95ft/s 977ft/s 19.6G 5,012ft 14.9s 13s
OK Cesaroni K570 196.4oz 87ft/s 834ft/s 15.5G 5,015ft 15.1s 11s
OK Cesaroni K600 203.7oz 78ft/s 860ft/s 12.8G 5,059ft 15.2s 12s
OK Cesaroni K1440 203.8oz 124ft/s 1,137ft/s 32.3G 5,147ft 14.3s 13s
OK KBA K1750 227.5oz 120ft/s 1,167ft/s 32.2G 5,186ft 14.5s 13s
OK Cesaroni K815 214.5oz 82ft/s 978ft/s 19.2G 5,188ft 15.0s 12s
OK AeroTech K700 208.8oz 90ft/s 902ft/s 17.3G 5,203ft 15.0s 11s
OK Cesaroni K750 209.6oz 86ft/s 947ft/s 15.5G 5,245ft 15.1s 12s
OK Cesaroni K261 205.1oz 51ft/s 609ft/s 5.3G 5,252ft 17.5s 9s
OK Gorilla K1075 226.6oz 94ft/s 1,032ft/s 18.6G 5,265ft 15.0s 13s
OK AeroTech K270 211.1oz 55ft/s 595ft/s 6.3G 5,297ft 17.6s 9s
OK Loki K830 221.7oz 74ft/s 1,044ft/s 13.8G 5,310ft 15.4s 13s
OK Cesaroni K820 206.9oz 97ft/s 988ft/s 27.8G 5,362ft 15.0s 12s
OK AeroTech K480 210.3oz 82ft/s 842ft/s 14.6G 5,376ft 15.6s 11s
OK Cesaroni K711 214.5oz 85ft/s 920ft/s 24.4G 5,377ft 15.4s 12s
OK Gorilla K1185 226.6oz 92ft/s 1,090ft/s 20.8G 5,385ft 15.1s 13s
OK AMW K1130 227.8oz 101ft/s 1,048ft/s 22.6G 5,405ft 15.1s 13s
OK AeroTech K1050 214.7oz 104ft/s 1,082ft/s 23.7G 5,466ft 15.0s 13s
OK AeroTech K375 211.3oz 103ft/s 721ft/s 21.7G 5,484ft 16.2s 10s
OK KBA L2300 229.8oz 145ft/s 1,291ft/s 44.5G 5,526ft 14.7s 14s
OK KBA K750 230.0oz 92ft/s 947ft/s 17.5G 5,538ft 15.6s 12s
OK Cesaroni K660 205.7oz 95ft/s 936ft/s 17.9G 5,564ft 15.4s 12s
OK AeroTech K455 217.6oz 102ft/s 754ft/s 20.5G 5,577ft 16.3s 11s
OK AMW L1276 241.4oz 96ft/s 1,113ft/s 20.5G 5,637ft 15.4s 13s
OK Cesaroni K590 207.3oz 114ft/s 835ft/s 30.5G 5,672ft 15.7s 11s
OK Gorilla K470 219.1oz 86ft/s 786ft/s 16.3G 5,704ft 16.2s 11s
OK AeroTech L1090 222.8oz 101ft/s 1,072ft/s 20.4G 5,730ft 15.4s 12s
OK AeroTech L1000 214.4oz 105ft/s 1,101ft/s 21.2G 5,731ft 15.2s 12s
OK AMW L985 227.7oz 101ft/s 1,053ft/s 22.2G 5,734ft 15.5s 13s
OK Loki L1400 226.6oz 108ft/s 1,212ft/s 25.8G 5,796ft 15.1s 13s
OK Cesaroni K260 209.2oz 57ft/s 642ft/s 6.4G 5,828ft 18.0s 9s
OK Cesaroni L1030 219.5oz 98ft/s 1,127ft/s 24.3G 5,831ft 15.4s 13s
OK Cesaroni L990 215.9oz 100ft/s 1,104ft/s 26.1G 5,848ft 15.3s 12s
OK Cesaroni L730 216.3oz 99ft/s 994ft/s 19.3G 6,027ft 15.9s 12s
OK Cesaroni L805 225.3oz 90ft/s 1,026ft/s 22.6G 6,057ft 15.9s 12s
OK Loki K350 226.6oz 82ft/s 701ft/s 18.4G 6,093ft 17.7s 11s
OK Cesaroni L640 216.2oz 110ft/s 898ft/s 24.0G 6,237ft 16.2s 11s
OK Cesaroni K300 217.1oz 63ft/s 703ft/s 8.0G 6,264ft 18.2s 10s
OK Cesaroni L935 226.7oz 100ft/s 1,117ft/s 23.5G 6,318ft 15.9s 13s
OK AeroTech K250 215.0oz 52ft/s 676ft/s 6.3G 6,379ft 18.9s 9s
OK Cesaroni L265 224.5oz 54ft/s 656ft/s 6.4G 6,602ft 19.7s 9s
OK Loki L1040 241.5oz 96ft/s 1,259ft/s 18.8G 7,157ft 16.7s 13s
warningsD AMW K590 197.6oz 11:1 thrust/weight ratio (no data)
warningsD Gorilla K695 189.8oz 13:1 thrust/weight ratio (no data)
warningsD Gorilla K828 201.8oz 15:1 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 (31ft/s)
failedG Cesaroni I140 speed at end of launch guide too slow (35ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (32ft/s)
failedG AeroTech I170 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni I150 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni I120 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni I165 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni I100 speed at end of launch guide too slow (45ft/s)
failedG AeroTech I65 speed at end of launch guide too slow (39ft/s)
failedG Hypertek J115 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni J250 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni J145 speed at end of launch guide too slow (47ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (34ft/s)
failedG AeroTech J250 speed at end of launch guide too slow (47ft/s)
failedG Hypertek J120 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni J244 speed at end of launch guide too slow (46ft/s)
failedG AeroTech J135 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni J140 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni K160 speed at end of launch guide too slow (44ft/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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