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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 100 motors that fit and appear to have enough thrust (637 motors didn't fit, 54 motors failed safety checks). 154 motor had thrust curves available and 320 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:   Twice as Mean Machine
Owner: Phill Ash
Body Diameter: 3.25in
Dry Weight: 125.0oz
MMT Diameter: 38.0mm
MMT Length: 21.00in
CD: 1.45

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 H303 145.8oz 77ft/s 117ft/s 18.2G 244ft 4.0s 3s
OK Contrail H211 146.2oz 72ft/s 132ft/s 14.5G 334ft 4.8s 4s
warningsW AeroTech H283 133.7oz 63ft/s 148ft/s 8.0G 360ft 4.9s 4s
OK AeroTech H130 133.4oz 53ft/s 130ft/s 6.0G 374ft 5.3s 4s
OK Contrail H246 146.1oz 70ft/s 146ft/s 12.1G 381ft 5.0s 4s
OK Contrail H141 146.6oz 51ft/s 142ft/s 5.5G 414ft 5.5s 4s
OK AeroTech H669 133.9oz 99ft/s 180ft/s 28.7G 452ft 5.3s 5s
OK Loki H144 136.9oz 51ft/s 149ft/s 5.5G 454ft 5.8s 4s
OK AeroTech H219 134.2oz 58ft/s 167ft/s 6.8G 471ft 5.7s 5s
OK AeroTech H242 134.3oz 51ft/s 167ft/s 5.4G 493ft 6.0s 5s
OK Loki H160 136.8oz 56ft/s 166ft/s 6.6G 520ft 6.0s 5s
OK Cesaroni H400 135.0oz 71ft/s 199ft/s 10.8G 559ft 6.0s 5s
OK Cesaroni H225 131.8oz 54ft/s 199ft/s 6.0G 619ft 6.5s 5s
OK AeroTech I218 138.1oz 57ft/s 215ft/s 6.4G 744ft 7.1s 6s
OK AeroTech I161 137.9oz 48ft/s 203ft/s 4.7G 773ft 7.5s 5s
OK AeroTech I180 138.6oz 65ft/s 205ft/s 8.4G 775ft 7.2s 5s
OK AeroTech H550 136.4oz 89ft/s 247ft/s 16.1G 782ft 6.9s 6s
OK AeroTech H550 136.1oz 89ft/s 248ft/s 16.1G 787ft 6.9s 6s
warningsW Cesaroni H565 137.8oz 86ft/s 252ft/s 15.7G 797ft 7.0s 6s
OK AeroTech H999 136.7oz 119ft/s 262ft/s 41.3G 817ft 6.9s 7s
OK AeroTech I225 142.1oz 50ft/s 233ft/s 6.0G 873ft 7.8s 6s
OK Cesaroni I212 141.8oz 48ft/s 239ft/s 5.5G 883ft 7.9s 6s
OK AeroTech I245 137.9oz 68ft/s 239ft/s 9.8G 888ft 7.6s 6s
OK AeroTech I357 137.1oz 66ft/s 247ft/s 8.9G 894ft 7.6s 6s
OK Cesaroni I566 138.6oz 85ft/s 289ft/s 15.0G 985ft 7.7s 7s
OK Cesaroni I195 139.7oz 50ft/s 252ft/s 5.1G 1,011ft 8.4s 6s
OK Cesaroni I170 138.8oz 48ft/s 258ft/s 4.8G 1,051ft 8.6s 6s
OK Cesaroni I345 138.9oz 65ft/s 290ft/s 9.1G 1,073ft 8.2s 7s
OK AeroTech I285 142.4oz 64ft/s 283ft/s 8.5G 1,095ft 8.3s 7s
OK Cesaroni I236 139.1oz 55ft/s 276ft/s 7.0G 1,108ft 8.5s 7s
OK Cesaroni I800 141.1oz 102ft/s 328ft/s 21.7G 1,149ft 8.1s 8s
OK Cesaroni I223 142.4oz 50ft/s 282ft/s 5.4G 1,153ft 8.8s 7s
OK AeroTech I211 141.0oz 58ft/s 272ft/s 7.2G 1,158ft 8.8s 6s
OK AeroTech I195 145.2oz 60ft/s 274ft/s 8.0G 1,181ft 8.8s 7s
OK AeroTech I305 145.5oz 67ft/s 295ft/s 9.1G 1,190ft 8.6s 7s
OK AeroTech I1299 139.9oz 135ft/s 343ft/s 37.9G 1,196ft 8.1s 8s
OK AeroTech I300 140.6oz 69ft/s 298ft/s 10.9G 1,198ft 8.6s 7s
OK Loki I316 144.0oz 74ft/s 317ft/s 11.5G 1,319ft 8.9s 7s
OK Cesaroni I287 146.3oz 58ft/s 324ft/s 7.4G 1,348ft 9.2s 7s
OK Loki I210 144.0oz 66ft/s 300ft/s 10.0G 1,371ft 9.3s 7s
OK Loki I405 144.2oz 92ft/s 347ft/s 19.0G 1,424ft 9.0s 8s
OK Cesaroni I285 142.8oz 60ft/s 336ft/s 7.9G 1,448ft 9.6s 8s
OK Cesaroni I255 143.2oz 57ft/s 333ft/s 6.9G 1,466ft 9.7s 8s
OK Loki I430 144.0oz 76ft/s 372ft/s 12.3G 1,505ft 9.4s 8s
OK Loki I377 144.8oz 85ft/s 354ft/s 15.3G 1,508ft 9.4s 8s
OK AMW I297 145.8oz 62ft/s 354ft/s 8.2G 1,542ft 9.7s 8s
OK AeroTech I327 147.2oz 66ft/s 360ft/s 9.6G 1,545ft 9.6s 8s
OK AeroTech I366 144.6oz 75ft/s 365ft/s 11.1G 1,551ft 9.5s 8s
OK AeroTech I364 148.9oz 67ft/s 360ft/s 9.1G 1,563ft 9.7s 8s
OK Cesaroni I303 142.6oz 64ft/s 357ft/s 9.4G 1,567ft 9.7s 8s
OK Cesaroni I242 144.4oz 54ft/s 345ft/s 6.1G 1,577ft 10.1s 8s
OK Cesaroni I470 142.5oz 79ft/s 390ft/s 13.1G 1,581ft 9.5s 8s
OK AeroTech I280 146.7oz 59ft/s 359ft/s 7.3G 1,596ft 10.0s 8s
OK AeroTech I435 143.3oz 90ft/s 401ft/s 18.0G 1,694ft 9.7s 8s
OK KBA I301 150.6oz 61ft/s 384ft/s 8.8G 1,701ft 10.1s 8s
OK Cesaroni I350 152.6oz 66ft/s 387ft/s 8.4G 1,704ft 10.1s 8s
OK KBA I550 150.1oz 80ft/s 436ft/s 15.2G 1,727ft 9.7s 9s
OK AeroTech I284 144.6oz 73ft/s 384ft/s 11.1G 1,730ft 10.0s 8s
OK AeroTech I500 145.3oz 78ft/s 434ft/s 13.3G 1,852ft 10.1s 9s
OK Cesaroni I216 146.2oz 57ft/s 368ft/s 7.3G 1,873ft 10.8s 8s
warningsW Cesaroni I540 146.1oz 86ft/s 451ft/s 14.5G 1,889ft 10.2s 9s
OK Loki J396 151.5oz 67ft/s 427ft/s 11.9G 1,890ft 10.4s 9s
OK AeroTech I600 146.2oz 94ft/s 451ft/s 19.1G 1,904ft 10.1s 9s
OK AeroTech I350 146.7oz 70ft/s 435ft/s 11.0G 1,913ft 10.4s 9s
OK Cesaroni J335 147.1oz 67ft/s 418ft/s 9.0G 1,914ft 10.6s 9s
OK AeroTech J420 147.9oz 78ft/s 434ft/s 12.6G 1,918ft 10.4s 9s
OK Cesaroni J270 148.1oz 55ft/s 401ft/s 6.3G 1,921ft 10.9s 8s
OK Cesaroni J285 146.0oz 62ft/s 406ft/s 8.0G 1,926ft 10.7s 8s
OK Cesaroni J381 149.3oz 75ft/s 430ft/s 11.2G 1,936ft 10.5s 9s
OK Cesaroni J316 146.4oz 66ft/s 412ft/s 9.7G 1,942ft 10.7s 9s
OK AeroTech J350 148.5oz 90ft/s 437ft/s 18.9G 1,947ft 10.3s 9s
OK AeroTech J340 145.4oz 75ft/s 426ft/s 13.9G 1,947ft 10.5s 8s
OK KBA J740 150.5oz 100ft/s 479ft/s 21.3G 1,950ft 10.1s 9s
OK Cesaroni J357 146.2oz 69ft/s 434ft/s 11.7G 1,963ft 10.6s 9s
OK AeroTech J425 147.3oz 68ft/s 460ft/s 9.9G 2,022ft 10.7s 9s
OK Cesaroni J290 148.3oz 62ft/s 420ft/s 8.5G 2,033ft 11.0s 9s
OK Cesaroni J400 149.8oz 71ft/s 455ft/s 10.4G 2,071ft 10.8s 9s
OK AeroTech J270 147.6oz 61ft/s 422ft/s 7.7G 2,096ft 11.1s 9s
OK AeroTech J520 152.2oz 107ft/s 472ft/s 23.1G 2,110ft 10.6s 9s
OK AeroTech J500 148.1oz 91ft/s 487ft/s 18.2G 2,163ft 10.7s 9s
OK Loki J528 151.3oz 97ft/s 506ft/s 23.3G 2,202ft 10.7s 9s
OK Cesaroni J330 149.8oz 72ft/s 470ft/s 10.1G 2,289ft 11.3s 9s
OK AeroTech J575 157.2oz 99ft/s 521ft/s 19.0G 2,300ft 10.9s 10s
OK Cesaroni J410 150.9oz 74ft/s 494ft/s 11.2G 2,308ft 11.2s 9s
OK AeroTech J435 147.0oz 88ft/s 508ft/s 15.9G 2,327ft 11.1s 9s
OK Cesaroni J425 149.7oz 79ft/s 502ft/s 15.1G 2,340ft 11.2s 9s
OK Loki J712 151.5oz 97ft/s 548ft/s 19.9G 2,364ft 11.0s 10s
OK Loki J320 151.5oz 69ft/s 479ft/s 11.6G 2,413ft 11.6s 9s
OK Cesaroni J354 152.4oz 72ft/s 488ft/s 11.3G 2,438ft 11.6s 9s
OK Cesaroni J520 155.0oz 83ft/s 545ft/s 14.2G 2,482ft 11.4s 10s
OK Cesaroni J580 161.8oz 81ft/s 563ft/s 13.9G 2,567ft 11.6s 10s
OK AeroTech J825 155.9oz 113ft/s 651ft/s 26.1G 2,780ft 11.6s 10s
OK Cesaroni J150 158.5oz 49ft/s 384ft/s 6.4G 2,823ft 13.9s 8s
OK Cesaroni J394 158.1oz 68ft/s 569ft/s 9.1G 2,847ft 12.3s 10s
OK Cesaroni J595 155.5oz 92ft/s 616ft/s 20.0G 2,869ft 11.9s 10s
OK Cesaroni J600 157.0oz 86ft/s 632ft/s 15.6G 2,887ft 12.0s 10s
OK Cesaroni J453 159.0oz 82ft/s 587ft/s 15.4G 2,950ft 12.3s 10s
OK Cesaroni J420 155.8oz 86ft/s 581ft/s 17.1G 2,953ft 12.3s 10s
OK AeroTech J570 156.8oz 111ft/s 603ft/s 25.4G 2,979ft 12.0s 10s
OK Cesaroni J530 159.5oz 91ft/s 649ft/s 17.1G 3,186ft 12.4s 10s

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 Contrail G130 speed at end of launch guide too slow (44ft/s)
failedA AeroTech G339 rocket doesn't reach a safe altitude (129ft)
failedG AeroTech G67 speed at end of launch guide too slow (27ft/s)
failedG Loki G69 speed at end of launch guide too slow (28ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (25ft/s)
failedA Contrail G234 rocket doesn't reach a safe altitude (120ft)
failedG Loki G70 speed at end of launch guide too slow (29ft/s)
failedG Loki G94 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (24ft/s)
failedG Loki G80 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (17ft/s)
failedG Cesaroni G185 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (26ft/s)
failedG Loki G66 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (25ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (25ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (19ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (27ft/s)
failedG Contrail G123 speed at end of launch guide too slow (44ft/s)
failedG Contrail G100 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (16ft/s)
failedA Contrail G300 rocket doesn't reach a safe altitude (91ft)
failedA Contrail H222 rocket doesn't reach a safe altitude (212ft)
failedA Contrail H300 rocket doesn't reach a safe altitude (215ft)
failedG AeroTech H73 speed at end of launch guide too slow (24ft/s)
failedG Loki H100 speed at end of launch guide too slow (36ft/s)
failedG AeroTech H148 speed at end of launch guide too slow (45ft/s)
failedG AeroTech H123 speed at end of launch guide too slow (38ft/s)
failedG Contrail H121 speed at end of launch guide too slow (44ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (35ft/s)
failedG Loki H90 speed at end of launch guide too slow (36ft/s)
failedG Loki H125 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (38ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni H152 speed at end of launch guide too slow (43ft/s)
failedG AeroTech H178 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (32ft/s)
failedG AeroTech H170 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (25ft/s)
failedG AeroTech I140 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni I180 speed at end of launch guide too slow (44ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (38ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (17ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (19ft/s)
failedG Cesaroni I175 speed at end of launch guide too slow (45ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (39ft/s)
failedG Loki I110 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni I125 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (36ft/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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