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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 86 motors that fit and appear to have enough thrust (684 motors didn't fit, 21 motors failed safety checks). 107 motor had thrust curves available and 231 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:   BAR Crayon Rocket (38mm)
Owner: K Sonesen
Body Diameter: 3.90in
Dry Weight: 49.4oz
MMT Diameter: 38.0mm
MMT Length: 14.00in
CD: 0.75

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 G339 55.8oz 94ft/s 220ft/s 23.3G 550ft 5.7s 5s
OK Loki G94 57.9oz 51ft/s 194ft/s 7.2G 579ft 6.2s 5s
OK Cesaroni G185 56.0oz 64ft/s 237ft/s 12.1G 643ft 6.2s 6s
OK Cesaroni G115 56.3oz 50ft/s 239ft/s 7.4G 723ft 6.8s 6s
OK Loki H100 61.2oz 50ft/s 285ft/s 7.3G 1,058ft 8.0s 6s
warningsW AeroTech H283 58.1oz 86ft/s 357ft/s 19.6G 1,091ft 7.6s 7s
OK AeroTech H148 60.3oz 61ft/s 330ft/s 10.5G 1,159ft 8.1s 7s
OK AeroTech H130 57.8oz 76ft/s 322ft/s 15.2G 1,171ft 8.0s 6s
OK AeroTech H669 58.3oz 131ft/s 424ft/s 67.3G 1,204ft 7.7s 7s
OK AeroTech H123 59.1oz 53ft/s 315ft/s 8.0G 1,264ft 8.6s 6s
OK AeroTech H100 58.6oz 48ft/s 318ft/s 6.8G 1,268ft 8.7s 6s
OK Loki H90 61.2oz 54ft/s 306ft/s 7.6G 1,292ft 8.8s 6s
OK Cesaroni H123 59.9oz 48ft/s 357ft/s 7.7G 1,293ft 8.6s 7s
OK AeroTech H219 58.6oz 77ft/s 399ft/s 17.0G 1,294ft 8.1s 7s
OK Loki H144 61.3oz 74ft/s 351ft/s 13.6G 1,297ft 8.3s 7s
OK Loki H125 61.5oz 65ft/s 336ft/s 11.0G 1,312ft 8.6s 7s
OK Cesaroni H143 61.6oz 50ft/s 368ft/s 8.2G 1,313ft 8.7s 7s
OK AeroTech H242 58.7oz 71ft/s 397ft/s 13.5G 1,358ft 8.4s 7s
OK Loki H160 61.2oz 79ft/s 380ft/s 16.0G 1,384ft 8.5s 7s
OK Cesaroni H400 59.4oz 91ft/s 465ft/s 25.6G 1,388ft 8.2s 8s
OK Cesaroni H120 59.8oz 52ft/s 376ft/s 7.9G 1,452ft 9.1s 7s
OK Cesaroni H125 59.7oz 50ft/s 394ft/s 7.8G 1,484ft 9.1s 7s
OK Cesaroni H225 56.2oz 73ft/s 474ft/s 15.5G 1,528ft 8.6s 7s
OK Cesaroni H152 59.9oz 60ft/s 415ft/s 11.8G 1,541ft 9.1s 7s
OK AeroTech H178 60.8oz 58ft/s 440ft/s 11.2G 1,550ft 9.0s 7s
OK AeroTech H550 60.5oz 118ft/s 563ft/s 37.7G 1,636ft 8.6s 8s
OK AeroTech H550 60.8oz 118ft/s 556ft/s 37.3G 1,641ft 8.6s 8s
OK AeroTech H999 61.1oz 158ft/s 593ft/s 93.8G 1,654ft 8.5s 8s
warningsW Cesaroni H565 62.2oz 111ft/s 566ft/s 34.9G 1,658ft 8.7s 8s
OK AeroTech I218 62.5oz 75ft/s 475ft/s 15.4G 1,687ft 9.1s 8s
OK AeroTech H170 61.0oz 62ft/s 456ft/s 10.8G 1,720ft 9.4s 7s
OK AeroTech I180 63.0oz 86ft/s 440ft/s 19.7G 1,732ft 9.2s 7s
OK AeroTech I161 62.3oz 65ft/s 448ft/s 11.5G 1,780ft 9.5s 7s
OK Cesaroni I180 63.3oz 58ft/s 487ft/s 10.5G 1,794ft 9.6s 8s
OK AeroTech I245 62.3oz 89ft/s 507ft/s 22.7G 1,823ft 9.2s 8s
OK AeroTech I357 61.5oz 88ft/s 537ft/s 21.2G 1,830ft 9.2s 8s
OK AeroTech I140 62.0oz 58ft/s 433ft/s 9.3G 1,840ft 9.8s 7s
OK AeroTech I225 66.5oz 63ft/s 499ft/s 13.4G 1,842ft 9.5s 8s
OK Cesaroni I566 63.0oz 108ft/s 641ft/s 33.9G 1,867ft 9.0s 8s
OK Cesaroni I212 66.2oz 61ft/s 517ft/s 12.1G 1,874ft 9.7s 8s
OK Cesaroni I800 65.5oz 123ft/s 713ft/s 46.1G 2,005ft 9.2s 9s
OK Cesaroni I345 63.3oz 89ft/s 620ft/s 21.2G 2,017ft 9.5s 8s
OK AeroTech I1299 64.3oz 176ft/s 750ft/s 83.7G 2,020ft 9.1s 9s
OK AeroTech I154 66.8oz 53ft/s 432ft/s 8.0G 2,024ft 10.5s 7s
OK Cesaroni I195 64.1oz 65ft/s 532ft/s 12.3G 2,052ft 10.0s 8s
OK AeroTech I285 66.8oz 80ft/s 583ft/s 19.3G 2,057ft 9.7s 8s
OK Cesaroni I170 63.2oz 64ft/s 545ft/s 11.8G 2,107ft 10.1s 8s
OK Cesaroni I236 63.5oz 73ft/s 577ft/s 16.6G 2,114ft 9.9s 8s
OK AeroTech I305 69.9oz 82ft/s 593ft/s 20.0G 2,120ft 9.7s 8s
OK Cesaroni I175 64.8oz 59ft/s 530ft/s 9.5G 2,128ft 10.2s 8s
OK AeroTech I300 65.0oz 92ft/s 610ft/s 24.8G 2,155ft 9.7s 8s
OK Cesaroni I223 66.8oz 67ft/s 582ft/s 12.7G 2,171ft 10.1s 8s
OK AeroTech I211 65.4oz 76ft/s 550ft/s 16.6G 2,171ft 10.0s 8s
OK AeroTech I195 69.6oz 77ft/s 544ft/s 17.7G 2,190ft 10.1s 8s
OK Loki I316 68.4oz 100ft/s 624ft/s 25.2G 2,263ft 9.9s 8s
OK Loki I405 68.6oz 122ft/s 683ft/s 41.2G 2,317ft 9.8s 9s
OK Cesaroni I287 70.7oz 72ft/s 646ft/s 15.6G 2,320ft 10.2s 8s
OK Loki I210 68.4oz 88ft/s 581ft/s 22.3G 2,390ft 10.3s 8s
OK Cesaroni I285 67.2oz 78ft/s 663ft/s 17.9G 2,428ft 10.3s 8s
OK Loki I430 68.4oz 92ft/s 746ft/s 27.0G 2,428ft 10.1s 9s
OK Loki I377 69.2oz 112ft/s 681ft/s 33.3G 2,431ft 10.1s 9s
warningsW Loki I110 70.2oz 57ft/s 481ft/s 12.5G 2,458ft 11.2s 7s
OK Cesaroni I470 66.9oz 106ft/s 785ft/s 29.0G 2,458ft 10.0s 9s
OK AeroTech I366 69.0oz 96ft/s 709ft/s 24.5G 2,466ft 10.2s 9s
OK Cesaroni I255 67.6oz 73ft/s 651ft/s 15.7G 2,473ft 10.5s 8s
OK AeroTech I327 71.6oz 89ft/s 702ft/s 20.7G 2,476ft 10.3s 9s
OK AeroTech I364 73.3oz 80ft/s 689ft/s 18.9G 2,487ft 10.3s 9s
OK AMW I297 70.2oz 81ft/s 690ft/s 18.1G 2,500ft 10.4s 8s
OK Cesaroni I303 67.0oz 81ft/s 700ft/s 21.2G 2,526ft 10.3s 8s
OK AeroTech I435 67.7oz 119ft/s 780ft/s 39.2G 2,548ft 10.0s 9s
OK AeroTech I280 71.1oz 76ft/s 691ft/s 16.1G 2,570ft 10.6s 9s
OK Cesaroni I242 68.8oz 71ft/s 660ft/s 13.9G 2,604ft 10.8s 8s
OK AeroTech I284 69.0oz 95ft/s 723ft/s 24.0G 2,641ft 10.4s 8s
OK Cesaroni I350 77.0oz 83ft/s 729ft/s 17.8G 2,644ft 10.7s 9s
OK AeroTech I500 69.7oz 101ft/s 843ft/s 28.8G 2,688ft 10.3s 9s
OK AeroTech I600 70.6oz 128ft/s 867ft/s 40.8G 2,703ft 10.2s 9s
OK AeroTech I350 71.1oz 90ft/s 817ft/s 23.2G 2,782ft 10.6s 9s
OK AeroTech J350 72.9oz 112ft/s 809ft/s 39.7G 2,783ft 10.4s 9s
OK AeroTech I59 66.6oz 53ft/s 342ft/s 7.9G 2,784ft 13.7s 5s
OK AeroTech J420 72.3oz 98ft/s 806ft/s 26.8G 2,786ft 10.6s 9s
OK AeroTech J340 69.8oz 103ft/s 791ft/s 30.0G 2,815ft 10.5s 8s
OK Cesaroni J357 70.6oz 90ft/s 806ft/s 25.2G 2,850ft 10.7s 9s
OK AeroTech J425 71.7oz 86ft/s 868ft/s 20.8G 2,883ft 10.7s 9s
OK Cesaroni J285 70.4oz 78ft/s 750ft/s 17.4G 2,885ft 10.9s 9s
OK AeroTech J500 72.5oz 118ft/s 891ft/s 38.4G 2,951ft 10.5s 9s
OK AeroTech J270 72.0oz 77ft/s 763ft/s 16.9G 3,051ft 11.2s 9s

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 (41ft/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 (39ft/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 Loki G80 speed at end of launch guide too slow (48ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (37ft/s)
failedG Loki G66 speed at end of launch guide too slow (48ft/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 (39ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (33ft/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 (30ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (37ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (48ft/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 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.)

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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