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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 155 motors that fit and appear to have enough thrust (619 motors didn't fit, 31 motors failed safety checks). 186 motor had thrust curves available and 378 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:   CJs MACHing Bird
Owner: KenRico
Body Diameter: 2.64in
Dry Weight: 79.0oz
MMT Diameter: 38.0mm
MMT Length: 100.00in
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 Contrail G234 98.2oz 96ft/s 124ft/s 18.9G 274ft 4.3s 4s
OK AeroTech G339 85.4oz 86ft/s 142ft/s 14.9G 324ft 4.6s 4s
OK Contrail G123 97.0oz 56ft/s 135ft/s 12.2G 369ft 5.2s 4s
OK Contrail G100 97.0oz 53ft/s 132ft/s 5.8G 380ft 5.3s 4s
OK Cesaroni G185 85.6oz 60ft/s 151ft/s 7.7G 387ft 5.2s 5s
OK Contrail H300 100.6oz 95ft/s 168ft/s 24.6G 488ft 5.6s 5s
OK Contrail H222 97.3oz 80ft/s 167ft/s 24.1G 490ft 5.7s 5s
OK Contrail H303 99.8oz 102ft/s 181ft/s 27.1G 554ft 6.0s 5s
OK Contrail H211 100.2oz 91ft/s 209ft/s 21.6G 771ft 7.1s 6s
OK Contrail H121 100.6oz 56ft/s 206ft/s 8.5G 846ft 7.8s 6s
OK Contrail H246 100.1oz 86ft/s 229ft/s 18.1G 882ft 7.6s 7s
warningsW AeroTech H283 87.7oz 79ft/s 241ft/s 12.8G 911ft 7.7s 7s
OK AeroTech H148 89.9oz 58ft/s 230ft/s 6.8G 940ft 8.2s 7s
OK AeroTech H130 87.4oz 69ft/s 228ft/s 9.7G 972ft 8.2s 7s
OK Contrail H141 100.6oz 64ft/s 231ft/s 8.5G 984ft 8.2s 7s
OK AeroTech H123 88.7oz 49ft/s 225ft/s 5.0G 1,035ft 8.8s 6s
OK Loki H90 90.8oz 48ft/s 221ft/s 4.8G 1,041ft 8.9s 6s
OK Contrail H248 107.0oz 83ft/s 251ft/s 22.3G 1,067ft 8.3s 7s
OK AeroTech H669 87.9oz 124ft/s 283ft/s 44.3G 1,128ft 8.3s 8s
OK Loki H125 91.1oz 58ft/s 244ft/s 7.1G 1,137ft 9.0s 7s
OK Loki H144 90.9oz 67ft/s 254ft/s 8.8G 1,153ft 8.9s 7s
OK AeroTech H219 88.2oz 73ft/s 278ft/s 11.0G 1,208ft 8.9s 8s
OK AeroTech H242 88.3oz 65ft/s 280ft/s 8.7G 1,274ft 9.3s 8s
OK Loki H160 90.8oz 70ft/s 278ft/s 10.4G 1,311ft 9.3s 8s
OK Cesaroni H120 89.4oz 49ft/s 272ft/s 5.0G 1,322ft 9.8s 8s
OK Contrail H277 104.0oz 91ft/s 291ft/s 25.2G 1,370ft 9.4s 8s
OK Contrail H340 107.8oz 92ft/s 299ft/s 28.9G 1,399ft 9.4s 8s
OK Cesaroni H400 89.0oz 89ft/s 317ft/s 17.1G 1,414ft 9.4s 9s
OK Cesaroni H152 89.5oz 56ft/s 303ft/s 7.5G 1,529ft 10.3s 9s
OK AeroTech H178 90.4oz 53ft/s 318ft/s 7.8G 1,589ft 10.4s 9s
OK Cesaroni H225 85.8oz 70ft/s 333ft/s 9.8G 1,629ft 10.3s 9s
OK Contrail I500 107.2oz 120ft/s 341ft/s 33.1G 1,690ft 10.2s 10s
OK AeroTech H170 90.6oz 58ft/s 345ft/s 7.2G 1,892ft 11.3s 9s
OK AeroTech I218 92.1oz 72ft/s 355ft/s 10.2G 1,894ft 11.1s 10s
OK Contrail I221 104.0oz 88ft/s 341ft/s 15.6G 1,910ft 11.1s 9s
OK AeroTech I180 92.6oz 82ft/s 345ft/s 13.1G 1,954ft 11.3s 9s
OK AeroTech H550 90.4oz 110ft/s 389ft/s 24.9G 1,973ft 10.9s 10s
OK AeroTech H550 90.1oz 110ft/s 393ft/s 25.1G 1,995ft 10.9s 10s
OK AeroTech I161 91.9oz 60ft/s 350ft/s 7.6G 1,998ft 11.6s 9s
warningsW Cesaroni H565 91.8oz 108ft/s 395ft/s 25.2G 2,008ft 11.0s 10s
OK AeroTech I140 91.6oz 54ft/s 347ft/s 6.1G 2,045ft 11.9s 9s
OK Cesaroni I180 92.9oz 55ft/s 367ft/s 7.5G 2,049ft 11.8s 10s
OK AeroTech H999 90.7oz 150ft/s 407ft/s 62.8G 2,058ft 11.0s 11s
OK AeroTech I225 96.1oz 61ft/s 386ft/s 9.6G 2,207ft 12.0s 10s
OK AeroTech I245 91.9oz 88ft/s 395ft/s 15.3G 2,252ft 11.9s 10s
OK Cesaroni I212 95.8oz 58ft/s 396ft/s 8.9G 2,254ft 12.2s 11s
OK AeroTech I154 96.4oz 49ft/s 358ft/s 5.3G 2,279ft 12.9s 9s
OK AeroTech I357 91.1oz 84ft/s 404ft/s 14.0G 2,283ft 11.9s 11s
OK Contrail I290 110.2oz 76ft/s 398ft/s 15.3G 2,383ft 12.3s 11s
OK Contrail I400 111.6oz 108ft/s 418ft/s 27.6G 2,421ft 12.2s 11s
OK Cesaroni I566 92.6oz 104ft/s 454ft/s 24.3G 2,507ft 12.2s 12s
OK Contrail I747 108.6oz 168ft/s 447ft/s 61.9G 2,533ft 12.2s 12s
OK Contrail I250 104.5oz 85ft/s 414ft/s 18.7G 2,566ft 12.7s 11s
OK Cesaroni I195 93.7oz 62ft/s 425ft/s 8.1G 2,606ft 13.1s 11s
OK Cesaroni I175 94.4oz 57ft/s 429ft/s 6.6G 2,716ft 13.4s 11s
OK Cesaroni I170 92.8oz 60ft/s 435ft/s 7.9G 2,725ft 13.4s 11s
OK Cesaroni I345 92.9oz 81ft/s 466ft/s 14.1G 2,744ft 12.9s 12s
OK AeroTech I285 96.4oz 78ft/s 457ft/s 13.2G 2,765ft 13.1s 12s
OK Cesaroni I236 93.1oz 69ft/s 459ft/s 11.0G 2,856ft 13.4s 12s
OK Cesaroni I800 95.1oz 124ft/s 507ft/s 34.6G 2,917ft 13.0s 12s
OK Cesaroni I223 96.4oz 62ft/s 467ft/s 8.8G 2,951ft 13.7s 12s
OK AeroTech I211 95.0oz 72ft/s 454ft/s 11.2G 2,953ft 13.6s 11s
OK AeroTech I195 99.2oz 76ft/s 453ft/s 12.2G 2,963ft 13.6s 11s
OK AeroTech I305 99.5oz 81ft/s 475ft/s 14.1G 2,976ft 13.4s 12s
OK Contrail I210 109.7oz 83ft/s 430ft/s 14.3G 2,977ft 13.8s 11s
OK AeroTech I1299 93.9oz 168ft/s 527ft/s 58.1G 3,046ft 13.1s 13s
OK AeroTech I300 94.6oz 86ft/s 485ft/s 16.7G 3,048ft 13.6s 12s
OK AeroTech I59 96.2oz 49ft/s 291ft/s 5.4G 3,097ft 16.1s 8s
warningsW Loki I110 99.8oz 52ft/s 427ft/s 8.5G 3,188ft 14.8s 11s
OK Loki I316 98.0oz 96ft/s 510ft/s 17.5G 3,317ft 14.0s 13s
OK Cesaroni I287 100.3oz 70ft/s 524ft/s 11.8G 3,415ft 14.4s 13s
OK Loki I210 98.0oz 81ft/s 497ft/s 15.2G 3,457ft 14.5s 12s
OK Contrail I155 104.6oz 59ft/s 471ft/s 6.6G 3,538ft 15.4s 12s
OK Contrail I333 111.8oz 91ft/s 516ft/s 27.0G 3,556ft 14.7s 13s
OK Loki I405 98.2oz 116ft/s 552ft/s 28.5G 3,597ft 14.4s 13s
OK Cesaroni I285 96.8oz 73ft/s 552ft/s 12.1G 3,722ft 15.0s 13s
OK Cesaroni I255 97.2oz 72ft/s 551ft/s 10.8G 3,769ft 15.1s 13s
OK Loki I377 98.8oz 103ft/s 567ft/s 23.0G 3,820ft 14.9s 13s
OK Loki I430 98.0oz 89ft/s 589ft/s 18.5G 3,849ft 14.9s 14s
OK AeroTech I327 101.2oz 83ft/s 578ft/s 14.4G 3,917ft 15.2s 13s
OK AMW I297 99.8oz 77ft/s 573ft/s 12.5G 3,927ft 15.3s 13s
OK AeroTech I364 102.9oz 80ft/s 579ft/s 14.0G 3,951ft 15.2s 14s
OK Contrail I307 107.6oz 102ft/s 551ft/s 22.8G 3,960ft 15.2s 13s
OK AeroTech I366 98.6oz 93ft/s 589ft/s 16.8G 3,966ft 15.2s 14s
OK Cesaroni I125 101.8oz 58ft/s 484ft/s 8.5G 3,971ft 16.4s 12s
OK Cesaroni I303 96.6oz 78ft/s 586ft/s 14.4G 4,039ft 15.4s 14s
OK Cesaroni I242 98.4oz 68ft/s 574ft/s 9.4G 4,053ft 15.8s 13s
OK AeroTech I280 100.7oz 73ft/s 587ft/s 11.0G 4,080ft 15.6s 14s
OK Cesaroni I470 96.5oz 96ft/s 620ft/s 19.8G 4,080ft 15.2s 14s
OK Contrail I727 111.8oz 163ft/s 612ft/s 52.5G 4,166ft 15.3s 15s
OK Cesaroni I350 106.6oz 78ft/s 615ft/s 12.8G 4,286ft 15.9s 14s
OK KBA I301 104.6oz 75ft/s 632ft/s 13.2G 4,349ft 15.8s 14s
OK AeroTech I435 97.3oz 113ft/s 640ft/s 27.0G 4,359ft 15.6s 14s
OK Contrail J150 110.4oz 62ft/s 526ft/s 7.7G 4,420ft 17.0s 13s
OK AeroTech I284 98.6oz 90ft/s 626ft/s 16.9G 4,440ft 15.9s 14s
OK KBA I550 104.1oz 100ft/s 691ft/s 24.5G 4,470ft 15.6s 15s
OK Contrail J246 109.4oz 88ft/s 593ft/s 16.2G 4,737ft 16.9s 14s
OK AeroTech I500 99.3oz 100ft/s 690ft/s 20.2G 4,793ft 16.3s 15s
OK Cesaroni I216 100.2oz 69ft/s 619ft/s 11.2G 4,802ft 16.9s 14s
OK Loki J396 105.5oz 83ft/s 676ft/s 18.2G 4,814ft 16.5s 15s
OK KBA J520 104.5oz 99ft/s 691ft/s 23.5G 4,815ft 16.4s 15s
warningsW Cesaroni I540 100.1oz 101ft/s 712ft/s 22.2G 4,897ft 16.4s 15s
OK AeroTech I600 100.2oz 115ft/s 712ft/s 28.4G 4,920ft 16.4s 15s
OK Cesaroni J335 101.1oz 84ft/s 679ft/s 13.7G 4,924ft 16.8s 15s
OK AeroTech J420 101.9oz 95ft/s 695ft/s 18.8G 4,937ft 16.6s 15s
OK Cesaroni J270 102.1oz 70ft/s 665ft/s 9.9G 4,945ft 17.1s 15s
OK AeroTech I350 100.7oz 86ft/s 700ft/s 16.8G 4,948ft 16.7s 15s
OK Cesaroni J381 103.3oz 92ft/s 689ft/s 16.6G 4,957ft 16.7s 15s
OK Cesaroni J285 100.0oz 76ft/s 669ft/s 12.5G 4,974ft 17.0s 15s
OK AeroTech J350 102.5oz 108ft/s 696ft/s 27.9G 4,986ft 16.6s 15s
OK Cesaroni J316 100.4oz 83ft/s 672ft/s 14.7G 4,992ft 16.9s 15s
OK KBA J740 104.5oz 122ft/s 731ft/s 33.5G 5,006ft 16.5s 16s
OK AeroTech J340 99.4oz 92ft/s 692ft/s 20.8G 5,018ft 16.7s 15s
OK Contrail J333 116.5oz 109ft/s 616ft/s 23.7G 5,028ft 17.0s 15s
OK RATT J160 98.2oz 66ft/s 558ft/s 8.6G 5,055ft 18.1s 13s
OK Cesaroni J357 100.2oz 86ft/s 704ft/s 17.5G 5,079ft 16.9s 15s
OK AeroTech J520 105.7oz 121ft/s 706ft/s 29.6G 5,110ft 16.7s 15s
OK Contrail J242 116.6oz 80ft/s 608ft/s 12.8G 5,184ft 17.7s 15s
OK Cesaroni J290 102.3oz 79ft/s 695ft/s 12.8G 5,234ft 17.4s 15s
OK AeroTech J425 101.3oz 81ft/s 740ft/s 15.7G 5,262ft 17.1s 16s
OK Loki J474 105.7oz 122ft/s 716ft/s 39.7G 5,329ft 17.0s 15s
OK Cesaroni J400 103.8oz 87ft/s 732ft/s 16.1G 5,337ft 17.2s 15s
OK AeroTech J270 101.6oz 75ft/s 704ft/s 11.7G 5,415ft 17.6s 15s
OK Contrail J555 118.9oz 140ft/s 707ft/s 39.6G 5,498ft 17.5s 16s
OK Loki J326 106.0oz 103ft/s 709ft/s 32.1G 5,605ft 17.7s 15s
OK AeroTech J500 102.1oz 112ft/s 778ft/s 26.9G 5,617ft 17.3s 16s
OK Loki J528 105.3oz 118ft/s 789ft/s 33.9G 5,682ft 17.3s 16s
OK AeroTech J575 111.2oz 117ft/s 809ft/s 28.0G 5,882ft 17.6s 16s
OK Cesaroni J330 103.8oz 85ft/s 768ft/s 15.0G 5,918ft 18.1s 16s
OK Cesaroni J410 104.9oz 92ft/s 796ft/s 16.5G 5,975ft 18.0s 16s
OK Cesaroni J425 103.7oz 99ft/s 807ft/s 22.2G 6,069ft 18.0s 16s
OK AeroTech J435 101.0oz 104ft/s 820ft/s 23.6G 6,086ft 18.0s 16s
OK Loki J712 105.5oz 116ft/s 852ft/s 29.0G 6,161ft 17.9s 17s
OK Loki J320 105.5oz 85ft/s 783ft/s 17.1G 6,212ft 18.5s 16s
OK Cesaroni J354 106.4oz 88ft/s 803ft/s 16.6G 6,279ft 18.5s 16s
OK Cesaroni J520 109.0oz 98ft/s 860ft/s 20.6G 6,423ft 18.4s 17s
OK Contrail J800 119.5oz 165ft/s 829ft/s 53.7G 6,585ft 18.6s 17s
OK Cesaroni J580 115.8oz 99ft/s 876ft/s 21.9G 6,590ft 18.7s 17s
OK Contrail J345 118.4oz 100ft/s 765ft/s 25.4G 6,660ft 19.2s 17s
OK Contrail J222 115.8oz 77ft/s 711ft/s 15.8G 6,747ft 20.0s 16s
OK Loki J650 119.3oz 105ft/s 898ft/s 28.7G 6,861ft 18.9s 18s
OK Cesaroni J150 112.5oz 60ft/s 694ft/s 9.4G 7,105ft 21.0s 15s
OK AeroTech J825 109.9oz 130ft/s 1,008ft/s 37.5G 7,325ft 19.1s 18s
OK Cesaroni J394 112.1oz 83ft/s 929ft/s 14.9G 7,379ft 19.8s 17s
OK Cesaroni J595 109.5oz 112ft/s 987ft/s 28.9G 7,523ft 19.5s 18s
OK Cesaroni J600 111.0oz 104ft/s 1,001ft/s 23.3G 7,568ft 19.5s 18s
OK Cesaroni J453 113.0oz 100ft/s 954ft/s 22.2G 7,639ft 19.8s 17s
OK Cesaroni J420 109.8oz 105ft/s 941ft/s 24.7G 7,663ft 19.8s 17s
OK AeroTech J570 110.8oz 128ft/s 973ft/s 36.4G 7,755ft 19.6s 18s
OK Cesaroni J530 113.5oz 115ft/s 1,048ft/s 24.6G 8,339ft 20.3s 18s
OK AeroTech J510 117.1oz 116ft/s 1,059ft/s 30.9G 8,599ft 20.5s 18s
OK Loki J1000 119.3oz 140ft/s 1,160ft/s 41.2G 8,814ft 20.5s 19s
OK Loki J1026 120.3oz 137ft/s 1,214ft/s 36.7G 9,152ft 20.8s 20s
OK Loki K1127 120.3oz 145ft/s 1,207ft/s 42.7G 9,201ft 20.8s 19s
OK Loki K627 122.6oz 118ft/s 1,292ft/s 28.1G 10,742ft 22.3s 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
failedA Contrail G130 rocket doesn't reach a safe altitude (196ft)
failedG AeroTech G67 speed at end of launch guide too slow (37ft/s)
failedG Loki G69 speed at end of launch guide too slow (39ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (35ft/s)
failedG Loki G70 speed at end of launch guide too slow (40ft/s)
failedG Loki G94 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (34ft/s)
failedG Loki G80 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (34ft/s)
failedG Loki G66 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (36ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (26ft/s)
failedA Contrail G300 rocket doesn't reach a safe altitude (204ft)
failedG AeroTech H73 speed at end of launch guide too slow (33ft/s)
failedG Loki H100 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (47ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (43ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (34ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (25ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (46ft/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.)

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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