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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 74 motors that fit and appear to have enough thrust (695 motors didn't fit, 33 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:   3 inch MC SDCR fg Twitch 38mm
Owner: Kenneth B Weaver
Body Diameter: 3.00in
Dry Weight: 64.0oz
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 70.4oz 84ft/s 174ft/s 18.3G 438ft 5.3s 5s
OK Cesaroni G185 70.6oz 57ft/s 187ft/s 9.5G 522ft 5.9s 5s
warningsW AeroTech H283 72.7oz 75ft/s 291ft/s 15.6G 1,069ft 8.0s 7s
OK AeroTech H148 74.9oz 55ft/s 277ft/s 8.3G 1,118ft 8.5s 7s
OK AeroTech H130 72.4oz 67ft/s 273ft/s 11.9G 1,145ft 8.5s 7s
OK AeroTech H669 72.9oz 120ft/s 342ft/s 53.6G 1,253ft 8.4s 8s
OK Loki H125 76.1oz 56ft/s 290ft/s 8.7G 1,307ft 9.2s 7s
OK Loki H144 75.9oz 65ft/s 301ft/s 10.8G 1,309ft 9.0s 7s
OK AeroTech H219 73.2oz 69ft/s 333ft/s 13.4G 1,345ft 8.9s 8s
OK AeroTech H242 73.3oz 63ft/s 335ft/s 10.7G 1,413ft 9.3s 8s
OK Loki H160 75.8oz 70ft/s 327ft/s 12.7G 1,442ft 9.3s 8s
OK Cesaroni H400 74.0oz 84ft/s 381ft/s 20.7G 1,505ft 9.2s 9s
OK Cesaroni H152 74.5oz 52ft/s 359ft/s 9.3G 1,646ft 10.1s 8s
OK AeroTech H178 75.4oz 52ft/s 377ft/s 9.3G 1,682ft 10.1s 8s
OK Cesaroni H225 70.8oz 64ft/s 399ft/s 12.1G 1,696ft 9.9s 9s
OK AeroTech I218 77.1oz 67ft/s 415ft/s 12.4G 1,904ft 10.5s 9s
OK AeroTech H550 75.4oz 105ft/s 463ft/s 30.1G 1,920ft 10.1s 10s
OK AeroTech H170 75.6oz 56ft/s 403ft/s 8.7G 1,924ft 10.7s 9s
OK AeroTech H550 75.1oz 106ft/s 468ft/s 30.3G 1,929ft 10.1s 10s
warningsW Cesaroni H565 76.8oz 99ft/s 470ft/s 29.4G 1,945ft 10.2s 10s
OK AeroTech I180 77.6oz 79ft/s 395ft/s 15.8G 1,955ft 10.6s 9s
OK AeroTech H999 75.7oz 143ft/s 486ft/s 75.5G 1,968ft 10.1s 10s
OK AeroTech I161 76.9oz 57ft/s 403ft/s 9.2G 2,005ft 10.9s 9s
OK Cesaroni I180 77.9oz 53ft/s 428ft/s 8.8G 2,039ft 11.0s 9s
OK AeroTech I140 76.6oz 52ft/s 397ft/s 7.5G 2,062ft 11.3s 9s
OK AeroTech I225 81.1oz 59ft/s 444ft/s 11.4G 2,135ft 11.1s 9s
OK AeroTech I245 76.9oz 83ft/s 454ft/s 18.4G 2,148ft 10.9s 9s
OK AeroTech I357 76.1oz 79ft/s 470ft/s 16.9G 2,167ft 10.9s 9s
OK Cesaroni I212 80.8oz 57ft/s 458ft/s 10.4G 2,177ft 11.3s 10s
OK Cesaroni I566 77.6oz 98ft/s 538ft/s 27.9G 2,289ft 10.9s 10s
OK Cesaroni I195 78.7oz 57ft/s 485ft/s 9.9G 2,435ft 11.8s 10s
OK Cesaroni I345 77.9oz 77ft/s 542ft/s 17.0G 2,475ft 11.5s 10s
OK AeroTech I285 81.4oz 74ft/s 523ft/s 15.7G 2,503ft 11.6s 10s
OK Cesaroni I170 77.8oz 57ft/s 496ft/s 9.4G 2,516ft 12.0s 10s
OK Cesaroni I175 79.4oz 54ft/s 487ft/s 7.8G 2,525ft 12.1s 10s
OK Cesaroni I800 80.1oz 112ft/s 598ft/s 39.8G 2,541ft 11.3s 11s
OK Cesaroni I236 78.1oz 66ft/s 523ft/s 13.3G 2,577ft 11.9s 10s
OK AeroTech I1299 78.9oz 157ft/s 624ft/s 69.1G 2,603ft 11.2s 11s
OK AeroTech I305 84.5oz 77ft/s 537ft/s 16.6G 2,624ft 11.8s 10s
OK AeroTech I211 80.0oz 68ft/s 510ft/s 13.4G 2,646ft 12.0s 10s
OK Cesaroni I223 81.4oz 60ft/s 530ft/s 10.3G 2,647ft 12.1s 10s
OK AeroTech I195 84.2oz 71ft/s 506ft/s 14.5G 2,658ft 12.1s 10s
OK AeroTech I300 79.6oz 83ft/s 552ft/s 20.1G 2,678ft 11.8s 10s
OK Loki I316 83.0oz 88ft/s 572ft/s 20.8G 2,847ft 12.1s 11s
warningsW Loki I110 84.8oz 50ft/s 463ft/s 10.2G 2,908ft 13.2s 9s
OK Cesaroni I287 85.3oz 66ft/s 591ft/s 13.6G 2,920ft 12.4s 11s
OK Loki I210 83.0oz 77ft/s 546ft/s 18.2G 2,975ft 12.5s 10s
OK Loki I405 83.2oz 109ft/s 621ft/s 33.8G 2,989ft 12.1s 11s
OK Cesaroni I285 81.8oz 71ft/s 617ft/s 14.5G 3,103ft 12.7s 11s
OK Loki I377 83.8oz 100ft/s 632ft/s 27.3G 3,142ft 12.5s 11s
OK Cesaroni I255 82.2oz 67ft/s 612ft/s 12.9G 3,148ft 12.8s 11s
OK Loki I430 83.0oz 87ft/s 671ft/s 22.1G 3,155ft 12.5s 11s
OK AeroTech I327 86.2oz 78ft/s 646ft/s 17.0G 3,203ft 12.7s 11s
OK AeroTech I366 83.6oz 86ft/s 659ft/s 20.1G 3,217ft 12.6s 11s
OK AMW I297 84.8oz 75ft/s 640ft/s 14.8G 3,221ft 12.8s 11s
OK AeroTech I364 87.9oz 76ft/s 643ft/s 16.2G 3,222ft 12.7s 11s
OK Cesaroni I470 81.5oz 93ft/s 706ft/s 23.6G 3,257ft 12.5s 11s
OK Cesaroni I303 81.6oz 75ft/s 652ft/s 17.2G 3,280ft 12.8s 11s
OK AeroTech I280 85.7oz 70ft/s 650ft/s 13.1G 3,321ft 13.1s 11s
OK Cesaroni I242 83.4oz 64ft/s 631ft/s 11.3G 3,332ft 13.2s 11s
OK AeroTech I435 82.3oz 107ft/s 716ft/s 32.1G 3,408ft 12.7s 11s
OK Cesaroni I350 91.6oz 74ft/s 681ft/s 14.7G 3,443ft 13.2s 11s
OK AeroTech I284 83.6oz 84ft/s 687ft/s 20.0G 3,491ft 13.0s 11s
OK AeroTech I500 84.3oz 90ft/s 772ft/s 23.6G 3,648ft 13.1s 12s
OK AeroTech I600 85.2oz 116ft/s 796ft/s 33.6G 3,701ft 13.0s 12s
OK AeroTech J420 86.9oz 87ft/s 764ft/s 22.2G 3,758ft 13.4s 12s
OK AeroTech I350 85.7oz 80ft/s 773ft/s 19.7G 3,759ft 13.4s 12s
OK AeroTech J350 87.5oz 106ft/s 765ft/s 32.9G 3,770ft 13.2s 12s
OK AeroTech J340 84.4oz 91ft/s 756ft/s 24.6G 3,794ft 13.3s 11s
OK Cesaroni J285 85.0oz 72ft/s 725ft/s 14.5G 3,832ft 13.7s 11s
OK Cesaroni J357 85.2oz 85ft/s 771ft/s 20.7G 3,845ft 13.5s 12s
OK AeroTech J425 86.3oz 75ft/s 819ft/s 17.8G 3,929ft 13.6s 12s
OK AeroTech J270 86.6oz 72ft/s 748ft/s 13.9G 4,081ft 14.1s 12s
OK AeroTech J500 87.1oz 106ft/s 850ft/s 31.7G 4,088ft 13.6s 12s

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 (36ft/s)
failedG Loki G69 speed at end of launch guide too slow (38ft/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 (39ft/s)
failedG Loki G94 speed at end of launch guide too slow (45ft/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 (42ft/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 (32ft/s)
failedG Loki G66 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (35ft/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 (45ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (25ft/s)
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 H123 speed at end of launch guide too slow (47ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (43ft/s)
failedG Loki H90 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (41ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (34ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (47ft/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 AeroTech I59 speed at end of launch guide too slow (47ft/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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