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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 54 motors that fit and appear to have enough thrust (725 motors didn't fit, 12 motors failed safety checks). 66 motor had thrust curves available and 117 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:   4inch Crayon-54mm MMT
Owner: Kenneth B Weaver
Body Diameter: 4.00in
Dry Weight: 8.00lb
MMT Diameter: 54.0mm
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 I215 9.16lb 51ft/s 250ft/s 5.4G 1,012ft 8.5s 7s
OK AeroTech I229 9.13lb 51ft/s 268ft/s 5.8G 1,098ft 8.7s 7s
OK AeroTech I599 9.13lb 95ft/s 302ft/s 17.8G 1,130ft 8.2s 8s
OK Cesaroni I445 9.27lb 73ft/s 335ft/s 11.9G 1,391ft 9.2s 8s
OK Cesaroni I218 9.28lb 50ft/s 301ft/s 5.4G 1,396ft 9.8s 8s
OK Cesaroni J145 9.85lb 49ft/s 316ft/s 10.1G 2,132ft 12.4s 7s
OK AeroTech J250 10.00lb 49ft/s 404ft/s 5.9G 2,175ft 11.9s 9s
OK Cesaroni J280 10.10lb 52ft/s 422ft/s 6.2G 2,202ft 11.9s 9s
OK AeroTech J250 9.56lb 57ft/s 404ft/s 6.9G 2,269ft 11.9s 9s
OK Cesaroni J1055 9.70lb 110ft/s 531ft/s 25.4G 2,399ft 11.3s 11s
OK AeroTech J315 9.88lb 59ft/s 443ft/s 7.6G 2,402ft 12.1s 10s
OK AeroTech J180 9.78lb 56ft/s 391ft/s 6.5G 2,563ft 12.8s 8s
OK Cesaroni J240 9.93lb 51ft/s 444ft/s 5.6G 2,589ft 12.9s 10s
OK Gorilla J365 10.65lb 51ft/s 494ft/s 9.6G 2,641ft 12.6s 10s
OK Cesaroni J210 9.86lb 52ft/s 413ft/s 6.4G 2,682ft 13.4s 9s
OK Cesaroni J430 9.76lb 69ft/s 520ft/s 11.0G 2,683ft 12.3s 10s
OK AeroTech J275 9.91lb 53ft/s 448ft/s 6.6G 2,691ft 12.9s 9s
OK Cesaroni J293 9.85lb 56ft/s 479ft/s 7.1G 2,699ft 12.8s 10s
OK Cesaroni J244 10.01lb 48ft/s 460ft/s 4.9G 2,726ft 13.3s 10s
OK AeroTech J460 9.74lb 75ft/s 530ft/s 11.8G 2,771ft 12.4s 10s
OK AeroTech J1299 9.84lb 128ft/s 606ft/s 32.8G 2,773ft 11.9s 11s
OK AMW J1365 10.47lb 120ft/s 628ft/s 32.7G 2,953ft 12.2s 12s
OK Gorilla J167 10.68lb 54ft/s 386ft/s 6.8G 2,985ft 14.3s 8s
OK AMW J400 11.05lb 57ft/s 541ft/s 8.8G 3,004ft 13.2s 11s
OK Loki J350 10.78lb 57ft/s 539ft/s 8.5G 3,034ft 13.3s 11s
OK AMW J475 11.11lb 65ft/s 585ft/s 11.6G 3,191ft 13.3s 11s
OK Cesaroni J360 10.43lb 57ft/s 568ft/s 10.7G 3,251ft 13.7s 11s
OK Cesaroni J380 10.85lb 58ft/s 584ft/s 7.9G 3,294ft 13.8s 11s
OK Gorilla J395 10.56lb 60ft/s 585ft/s 8.8G 3,301ft 13.7s 11s
OK Gorilla J465 10.61lb 63ft/s 606ft/s 13.0G 3,304ft 13.5s 11s
OK AeroTech J450 10.70lb 63ft/s 605ft/s 10.4G 3,362ft 13.7s 11s
OK AeroTech J1799 10.45lb 142ft/s 737ft/s 45.2G 3,385ft 12.7s 12s
OK AMW J395 10.80lb 65ft/s 584ft/s 8.8G 3,416ft 13.9s 11s
OK Cesaroni J1520 10.26lb 129ft/s 742ft/s 36.2G 3,422ft 12.8s 12s
OK Gorilla J485 10.62lb 68ft/s 629ft/s 11.3G 3,431ft 13.6s 11s
OK AMW J325 10.71lb 69ft/s 544ft/s 10.3G 3,476ft 14.1s 11s
OK Gorilla J535 10.70lb 82ft/s 652ft/s 13.2G 3,517ft 13.5s 11s
OK AMW J440 10.71lb 89ft/s 625ft/s 15.9G 3,518ft 13.5s 11s
OK Loki J525 10.73lb 75ft/s 660ft/s 12.7G 3,540ft 13.6s 12s
OK Loki J820 10.67lb 103ft/s 697ft/s 20.9G 3,584ft 13.3s 12s
OK AeroTech J401 10.01lb 69ft/s 639ft/s 9.8G 3,646ft 14.0s 11s
OK AeroTech J540 10.39lb 82ft/s 673ft/s 13.6G 3,671ft 13.7s 11s
OK Loki J175 10.76lb 58ft/s 469ft/s 7.8G 3,734ft 15.4s 9s
OK AMW J745 10.69lb 91ft/s 723ft/s 17.4G 3,779ft 13.8s 12s
OK Cesaroni J355 10.59lb 62ft/s 617ft/s 8.2G 3,808ft 14.6s 11s
OK Loki J300 10.90lb 59ft/s 575ft/s 7.3G 3,858ft 15.0s 11s
OK Cesaroni J295 10.47lb 64ft/s 579ft/s 8.4G 3,889ft 14.8s 11s
OK AeroTech J800 10.39lb 97ft/s 756ft/s 19.5G 3,983ft 13.9s 12s
OK Cesaroni J760 10.37lb 93ft/s 782ft/s 18.5G 4,025ft 14.0s 12s
OK AeroTech J415 10.58lb 67ft/s 668ft/s 10.5G 4,033ft 14.6s 11s
OK Cesaroni J449 10.47lb 69ft/s 702ft/s 11.1G 4,047ft 14.5s 12s
OK Cesaroni K360 10.72lb 58ft/s 663ft/s 7.3G 4,104ft 15.1s 12s
OK AeroTech K400 10.63lb 73ft/s 673ft/s 10.4G 4,194ft 14.9s 12s
OK AeroTech K535 10.79lb 77ft/s 756ft/s 12.3G 4,458ft 14.9s 12s

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 (33ft/s)
failedG Cesaroni I140 speed at end of launch guide too slow (36ft/s)
failedG AeroTech I115 speed at end of launch guide too slow (34ft/s)
failedG AeroTech I170 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni I150 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni I120 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni I165 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni I100 speed at end of launch guide too slow (47ft/s)
failedG AeroTech I65 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni J250 speed at end of launch guide too slow (47ft/s)
failedG AeroTech J90 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni J140 speed at end of launch guide too slow (40ft/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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