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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 154 motors that fit and appear to have enough thrust (640 motors didn't fit, 17 motors failed safety checks). 171 motor had thrust curves available and 348 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:   Cosmic String Theory
Owner: Christian Andrews
Body Diameter: 2.25in
Dry Weight: 4.00lb
MMT Diameter: 38.0mm
MMT Length: 34.00in
CD: 0.60

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 5.14lb 65ft/s 119ft/s 22.4G 278ft 4.4s 4s
OK Contrail G300 5.20lb 111ft/s 132ft/s 34.2G 283ft 4.2s 4s
OK Contrail G234 5.20lb 104ft/s 149ft/s 22.5G 382ft 5.0s 4s
OK Loki G80 4.56lb 48ft/s 145ft/s 4.6G 440ft 5.8s 4s
OK AeroTech G339 4.40lb 96ft/s 174ft/s 18.3G 472ft 5.5s 5s
OK Loki G94 4.53lb 52ft/s 156ft/s 5.6G 478ft 5.9s 4s
OK Contrail G123 5.13lb 63ft/s 166ft/s 14.6G 521ft 6.0s 5s
OK Loki G66 4.55lb 48ft/s 154ft/s 4.7G 538ft 6.5s 4s
OK Contrail G100 5.13lb 59ft/s 163ft/s 7.0G 539ft 6.2s 5s
OK Cesaroni G185 4.42lb 65ft/s 188ft/s 9.6G 569ft 6.2s 6s
OK Cesaroni G115 4.43lb 52ft/s 192ft/s 5.7G 646ft 6.8s 6s
OK Contrail H300 5.35lb 107ft/s 201ft/s 29.2G 665ft 6.5s 6s
OK Contrail H222 5.15lb 90ft/s 201ft/s 28.6G 675ft 6.6s 6s
OK Contrail H303 5.30lb 116ft/s 216ft/s 32.1G 753ft 6.9s 6s
OK Contrail H211 5.32lb 103ft/s 250ft/s 25.6G 1,037ft 8.2s 7s
OK Loki H100 4.74lb 52ft/s 245ft/s 6.2G 1,112ft 8.9s 7s
OK Contrail H121 5.35lb 61ft/s 251ft/s 10.2G 1,153ft 9.0s 7s
OK Contrail H246 5.32lb 97ft/s 274ft/s 21.5G 1,179ft 8.6s 8s
warningsW AeroTech H283 4.54lb 86ft/s 296ft/s 15.7G 1,262ft 8.9s 8s
OK AeroTech H148 4.68lb 65ft/s 285ft/s 8.3G 1,312ft 9.4s 8s
OK Contrail H141 5.35lb 70ft/s 278ft/s 10.2G 1,321ft 9.4s 8s
OK AeroTech H130 4.52lb 78ft/s 283ft/s 11.9G 1,355ft 9.4s 8s
OK Contrail H248 5.75lb 94ft/s 297ft/s 26.1G 1,396ft 9.4s 8s
OK AeroTech H100 4.58lb 50ft/s 285ft/s 5.5G 1,452ft 10.2s 8s
OK AeroTech H123 4.61lb 55ft/s 282ft/s 6.3G 1,454ft 10.1s 8s
OK Loki H90 4.74lb 55ft/s 277ft/s 6.0G 1,460ft 10.3s 8s
OK Cesaroni H123 4.65lb 50ft/s 309ft/s 6.3G 1,523ft 10.3s 8s
OK AeroTech H669 4.56lb 135ft/s 344ft/s 53.6G 1,527ft 9.5s 9s
OK Loki H125 4.75lb 64ft/s 302ft/s 8.7G 1,561ft 10.3s 8s
OK Loki H144 4.74lb 72ft/s 312ft/s 10.8G 1,572ft 10.1s 9s
OK Cesaroni H143 4.77lb 53ft/s 320ft/s 6.9G 1,579ft 10.4s 9s
OK AeroTech H219 4.58lb 81ft/s 339ft/s 13.4G 1,631ft 10.1s 9s
OK AeroTech H242 4.58lb 73ft/s 345ft/s 10.7G 1,733ft 10.5s 9s
OK Loki H160 4.74lb 78ft/s 339ft/s 12.7G 1,765ft 10.6s 9s
OK Contrail H277 5.57lb 103ft/s 344ft/s 29.6G 1,777ft 10.5s 9s
OK Contrail H340 5.80lb 104ft/s 350ft/s 33.8G 1,796ft 10.6s 10s
OK Cesaroni H120 4.65lb 54ft/s 339ft/s 6.2G 1,819ft 11.2s 9s
OK Cesaroni H110 4.72lb 48ft/s 334ft/s 5.0G 1,846ft 11.5s 9s
OK Cesaroni H400 4.63lb 96ft/s 386ft/s 20.8G 1,887ft 10.7s 10s
OK Cesaroni H125 4.65lb 53ft/s 352ft/s 6.5G 1,899ft 11.4s 9s
OK Cesaroni H100 4.72lb 48ft/s 349ft/s 4.6G 2,018ft 12.1s 9s
OK Cesaroni H152 4.66lb 62ft/s 374ft/s 9.3G 2,059ft 11.6s 10s
OK AeroTech H178 4.71lb 59ft/s 390ft/s 9.5G 2,124ft 11.7s 10s
OK Contrail I500 5.76lb 133ft/s 400ft/s 38.7G 2,137ft 11.3s 11s
OK Cesaroni H225 4.43lb 76ft/s 411ft/s 12.1G 2,176ft 11.6s 10s
OK Contrail I221 5.57lb 95ft/s 404ft/s 18.4G 2,428ft 12.3s 11s
OK AeroTech I218 4.82lb 79ft/s 431ft/s 12.4G 2,463ft 12.3s 11s
OK AeroTech H170 4.73lb 64ft/s 423ft/s 8.9G 2,484ft 12.6s 10s
OK AeroTech I180 4.85lb 89ft/s 418ft/s 15.8G 2,528ft 12.5s 11s
OK AeroTech H550 4.71lb 122ft/s 471ft/s 30.2G 2,534ft 12.1s 12s
OK AeroTech H550 4.70lb 122ft/s 476ft/s 30.4G 2,558ft 12.1s 12s
warningsW Cesaroni H565 4.80lb 120ft/s 477ft/s 30.4G 2,571ft 12.2s 12s
OK AeroTech I175 4.77lb 74ft/s 425ft/s 10.9G 2,577ft 12.8s 11s
OK AeroTech I161 4.81lb 66ft/s 427ft/s 9.3G 2,602ft 12.9s 11s
OK AeroTech H999 4.73lb 165ft/s 491ft/s 75.5G 2,622ft 12.1s 12s
OK Cesaroni I180 4.87lb 60ft/s 447ft/s 9.1G 2,658ft 13.0s 11s
OK AeroTech I140 4.78lb 59ft/s 425ft/s 7.5G 2,676ft 13.2s 11s
OK AeroTech I225 5.07lb 68ft/s 465ft/s 11.6G 2,814ft 13.2s 11s
OK AeroTech I245 4.80lb 94ft/s 477ft/s 18.5G 2,863ft 13.0s 12s
OK Cesaroni I212 5.05lb 65ft/s 479ft/s 10.8G 2,877ft 13.4s 12s
OK AeroTech I357 4.76lb 92ft/s 490ft/s 17.0G 2,902ft 13.1s 12s
OK AeroTech I154 5.08lb 54ft/s 436ft/s 6.5G 2,949ft 14.1s 11s
OK Contrail I747 5.85lb 179ft/s 521ft/s 72.0G 3,093ft 13.2s 13s
OK Cesaroni I566 4.85lb 114ft/s 548ft/s 29.2G 3,133ft 13.3s 13s
OK Contrail I250 5.60lb 91ft/s 488ft/s 22.0G 3,180ft 13.8s 12s
OK Cesaroni I195 4.92lb 67ft/s 515ft/s 9.9G 3,288ft 14.2s 12s
OK Cesaroni I345 4.87lb 92ft/s 562ft/s 17.0G 3,410ft 14.0s 13s
OK Cesaroni I175 4.96lb 62ft/s 519ft/s 8.0G 3,418ft 14.6s 12s
OK Cesaroni I170 4.86lb 65ft/s 526ft/s 9.5G 3,423ft 14.5s 12s
OK AeroTech I285 5.09lb 85ft/s 547ft/s 15.8G 3,424ft 14.1s 13s
OK Cesaroni I236 4.88lb 77ft/s 554ft/s 13.3G 3,550ft 14.5s 13s
OK Cesaroni I800 5.01lb 136ft/s 608ft/s 41.5G 3,565ft 14.0s 13s
OK AeroTech I305 5.28lb 87ft/s 565ft/s 16.8G 3,629ft 14.4s 13s
OK AeroTech I195 5.26lb 82ft/s 540ft/s 14.6G 3,638ft 14.7s 12s
OK AeroTech I211 5.00lb 79ft/s 545ft/s 13.4G 3,645ft 14.7s 12s
OK Cesaroni I223 5.09lb 69ft/s 561ft/s 10.6G 3,647ft 14.8s 13s
OK AeroTech I1299 4.93lb 179ft/s 632ft/s 69.7G 3,695ft 14.0s 14s
OK AeroTech I300 4.97lb 93ft/s 581ft/s 20.1G 3,732ft 14.6s 13s
warningsW Loki I110 5.30lb 57ft/s 510ft/s 10.2G 3,945ft 15.9s 12s
OK Loki I316 5.19lb 101ft/s 605ft/s 20.9G 4,001ft 14.9s 13s
OK AeroTech I59 5.07lb 55ft/s 361ft/s 6.6G 4,014ft 17.5s 9s
OK Cesaroni I287 5.33lb 76ft/s 624ft/s 14.1G 4,115ft 15.4s 14s
OK Loki I210 5.19lb 92ft/s 589ft/s 18.2G 4,171ft 15.4s 13s
OK Loki I405 5.20lb 128ft/s 654ft/s 33.8G 4,281ft 15.2s 14s
OK Contrail I155 5.60lb 63ft/s 555ft/s 7.9G 4,313ft 16.5s 13s
OK Cesaroni I285 5.12lb 84ft/s 658ft/s 14.5G 4,452ft 15.9s 14s
OK Cesaroni I255 5.14lb 79ft/s 657ft/s 13.0G 4,509ft 16.0s 14s
OK Loki I377 5.23lb 115ft/s 671ft/s 27.3G 4,524ft 15.7s 14s
OK Loki I430 5.19lb 100ft/s 701ft/s 22.1G 4,566ft 15.8s 15s
OK AeroTech I327 5.38lb 88ft/s 684ft/s 17.1G 4,622ft 16.0s 14s
OK AMW I297 5.30lb 83ft/s 680ft/s 14.8G 4,646ft 16.1s 14s
OK AeroTech I364 5.49lb 85ft/s 685ft/s 16.6G 4,652ft 16.0s 14s
OK AeroTech I366 5.22lb 99ft/s 699ft/s 20.1G 4,677ft 15.9s 14s
OK Cesaroni I303 5.10lb 84ft/s 697ft/s 17.2G 4,773ft 16.2s 14s
OK Cesaroni I125 5.43lb 65ft/s 573ft/s 10.1G 4,789ft 17.3s 13s
OK Cesaroni I470 5.09lb 108ft/s 739ft/s 23.6G 4,793ft 16.0s 15s
OK Cesaroni I242 5.21lb 75ft/s 683ft/s 11.3G 4,807ft 16.6s 14s
OK AeroTech I280 5.36lb 79ft/s 696ft/s 13.1G 4,812ft 16.4s 14s
OK KBA I301 5.60lb 80ft/s 695ft/s 15.3G 4,938ft 16.6s 15s
OK Cesaroni I350 5.72lb 88ft/s 723ft/s 15.1G 4,998ft 16.6s 15s
OK KBA I550 5.57lb 102ft/s 754ft/s 26.1G 5,014ft 16.4s 15s
OK AeroTech I435 5.14lb 124ft/s 758ft/s 32.1G 5,062ft 16.3s 15s
OK AeroTech I284 5.22lb 97ft/s 740ft/s 20.2G 5,157ft 16.6s 15s
OK AeroTech I500 5.27lb 104ft/s 816ft/s 23.9G 5,497ft 16.9s 16s
OK Cesaroni J94 5.46lb 50ft/s 573ft/s 5.7G 5,524ft 19.4s 12s
OK KBA J520 5.59lb 103ft/s 812ft/s 27.6G 5,526ft 17.0s 16s
OK Loki J396 5.66lb 88ft/s 793ft/s 21.5G 5,530ft 17.2s 16s
OK Cesaroni I216 5.32lb 75ft/s 728ft/s 13.3G 5,576ft 17.6s 15s
warningsW Cesaroni I540 5.32lb 112ft/s 842ft/s 26.3G 5,594ft 16.9s 16s
OK AeroTech I600 5.33lb 126ft/s 840ft/s 33.6G 5,609ft 16.9s 16s
OK AeroTech J420 5.43lb 102ft/s 818ft/s 22.3G 5,648ft 17.2s 16s
OK Cesaroni J335 5.38lb 90ft/s 800ft/s 16.3G 5,653ft 17.4s 15s
OK Cesaroni J381 5.52lb 97ft/s 809ft/s 19.6G 5,662ft 17.3s 15s
OK AeroTech I350 5.36lb 97ft/s 826ft/s 20.0G 5,664ft 17.2s 16s
OK AeroTech J350 5.47lb 119ft/s 817ft/s 32.9G 5,676ft 17.1s 16s
OK Cesaroni J270 5.44lb 76ft/s 784ft/s 11.8G 5,701ft 17.7s 15s
OK KBA J740 5.60lb 135ft/s 859ft/s 39.3G 5,702ft 17.0s 16s
OK AeroTech J340 5.27lb 103ft/s 815ft/s 24.6G 5,719ft 17.2s 15s
OK Cesaroni J285 5.31lb 86ft/s 788ft/s 14.9G 5,721ft 17.6s 15s
OK Cesaroni J316 5.34lb 88ft/s 790ft/s 17.4G 5,748ft 17.6s 15s
OK AeroTech J520 5.67lb 131ft/s 823ft/s 34.7G 5,796ft 17.3s 16s
OK Cesaroni J357 5.32lb 97ft/s 831ft/s 20.7G 5,800ft 17.4s 16s
OK Cesaroni J290 5.45lb 85ft/s 816ft/s 15.2G 5,972ft 17.9s 15s
OK AeroTech J425 5.39lb 91ft/s 874ft/s 18.6G 5,978ft 17.6s 16s
OK Loki J474 5.67lb 133ft/s 833ft/s 46.5G 6,022ft 17.5s 16s
OK Cesaroni J400 5.55lb 94ft/s 859ft/s 19.0G 6,044ft 17.7s 16s
OK AeroTech J270 5.42lb 81ft/s 826ft/s 13.9G 6,154ft 18.1s 16s
OK AeroTech J500 5.44lb 124ft/s 912ft/s 31.7G 6,298ft 17.7s 16s
OK Loki J326 5.69lb 114ft/s 823ft/s 37.5G 6,335ft 18.2s 16s
OK Loki J528 5.64lb 129ft/s 922ft/s 39.7G 6,353ft 17.8s 17s
OK AeroTech J575 6.02lb 126ft/s 938ft/s 32.7G 6,498ft 17.9s 17s
OK Cesaroni J330 5.55lb 95ft/s 895ft/s 17.7G 6,634ft 18.5s 16s
OK Cesaroni J410 5.62lb 99ft/s 930ft/s 19.4G 6,669ft 18.4s 16s
OK Cesaroni J425 5.54lb 103ft/s 943ft/s 26.2G 6,744ft 18.3s 16s
OK AeroTech J435 5.38lb 114ft/s 960ft/s 27.9G 6,763ft 18.3s 17s
OK Loki J712 5.66lb 126ft/s 996ft/s 34.0G 6,824ft 18.3s 17s
OK Cesaroni J354 5.72lb 98ft/s 932ft/s 19.5G 6,971ft 18.8s 16s
OK Cesaroni J520 5.87lb 107ft/s 1,000ft/s 24.1G 7,067ft 18.7s 17s
OK Cesaroni J580 6.30lb 107ft/s 1,012ft/s 25.3G 7,233ft 18.9s 17s
OK Loki J650 6.52lb 113ft/s 1,031ft/s 32.9G 7,501ft 19.2s 18s
OK AeroTech J825 5.93lb 139ft/s 1,171ft/s 43.6G 7,897ft 19.1s 18s
OK Cesaroni J150 6.10lb 65ft/s 793ft/s 11.0G 7,961ft 21.4s 15s
OK Cesaroni J394 6.07lb 87ft/s 1,071ft/s 17.1G 8,025ft 19.9s 17s
OK Cesaroni J595 5.91lb 121ft/s 1,139ft/s 33.6G 8,105ft 19.5s 18s
OK Cesaroni J600 6.00lb 113ft/s 1,158ft/s 27.0G 8,142ft 19.5s 18s
OK Cesaroni J453 6.13lb 109ft/s 1,094ft/s 25.7G 8,242ft 19.9s 18s
OK Cesaroni J420 5.93lb 115ft/s 1,080ft/s 28.8G 8,285ft 19.9s 17s
OK AeroTech J570 5.99lb 137ft/s 1,115ft/s 42.3G 8,323ft 19.6s 18s
OK Cesaroni J530 6.15lb 124ft/s 1,197ft/s 28.5G 8,888ft 20.2s 18s
OK AeroTech J510 6.38lb 125ft/s 1,204ft/s 35.6G 9,124ft 20.4s 18s
OK Loki J1000 6.52lb 161ft/s 1,327ft/s 47.3G 9,327ft 20.4s 19s
OK Loki J1026 6.58lb 145ft/s 1,390ft/s 42.3G 9,648ft 20.7s 19s
OK Loki K1127 6.58lb 152ft/s 1,375ft/s 48.9G 9,673ft 20.7s 19s
OK Loki K627 6.72lb 125ft/s 1,452ft/s 32.2G 11,174ft 22.0s 19s

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 (42ft/s)
failedG Loki G69 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (40ft/s)
failedG Loki G70 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (29ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (38ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (44ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (39ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (29ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (32ft/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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