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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 114 motors that fit and appear to have enough thrust (631 motors didn't fit, 46 motors failed safety checks). 160 motor had thrust curves available and 330 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:   RW Formula 75
Owner: John Sigmon
Body Diameter: 2.99in
Dry Weight: 80.0oz
MMT Diameter: 38.0mm
MMT Length: 26.00in
CD: 0.65

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 99.2oz 80ft/s 122ft/s 18.7G 263ft 4.2s 4s
OK AeroTech G339 86.4oz 72ft/s 140ft/s 14.7G 307ft 4.5s 4s
OK Contrail G123 98.0oz 48ft/s 133ft/s 12.1G 351ft 5.0s 4s
OK Cesaroni G185 86.6oz 48ft/s 149ft/s 7.6G 365ft 5.1s 4s
OK Contrail H300 101.6oz 86ft/s 166ft/s 24.4G 460ft 5.4s 5s
OK Contrail H222 98.3oz 70ft/s 164ft/s 23.8G 463ft 5.5s 5s
OK Contrail H303 100.8oz 91ft/s 178ft/s 26.8G 520ft 5.8s 5s
OK Contrail H211 101.2oz 76ft/s 205ft/s 21.4G 714ft 6.8s 6s
OK Contrail H246 101.1oz 73ft/s 224ft/s 17.9G 810ft 7.2s 6s
warningsW AeroTech H283 88.7oz 66ft/s 237ft/s 12.6G 826ft 7.3s 7s
OK AeroTech H148 90.9oz 48ft/s 224ft/s 6.7G 855ft 7.7s 6s
OK AeroTech H130 88.4oz 57ft/s 221ft/s 9.6G 880ft 7.7s 6s
OK Contrail H141 101.6oz 53ft/s 225ft/s 8.4G 901ft 7.8s 6s
OK AeroTech H669 88.9oz 101ft/s 279ft/s 43.8G 1,006ft 7.8s 7s
OK Loki H144 91.9oz 55ft/s 247ft/s 8.7G 1,035ft 8.3s 7s
OK AeroTech H219 89.2oz 59ft/s 271ft/s 10.8G 1,075ft 8.3s 7s
OK AeroTech H242 89.3oz 54ft/s 273ft/s 8.6G 1,131ft 8.6s 7s
OK Loki H160 91.8oz 60ft/s 270ft/s 10.3G 1,165ft 8.7s 7s
OK Cesaroni H400 90.0oz 71ft/s 311ft/s 16.8G 1,240ft 8.7s 8s
OK Cesaroni H225 86.8oz 57ft/s 324ft/s 9.7G 1,409ft 9.5s 8s
OK AeroTech I218 93.1oz 58ft/s 344ft/s 10.1G 1,626ft 10.1s 9s
OK AeroTech H550 91.4oz 90ft/s 382ft/s 24.6G 1,674ft 9.8s 9s
OK AeroTech I180 93.6oz 68ft/s 331ft/s 12.9G 1,677ft 10.3s 8s
OK AeroTech H550 91.1oz 91ft/s 385ft/s 24.8G 1,687ft 9.9s 9s
warningsW Cesaroni H565 92.8oz 90ft/s 387ft/s 24.5G 1,701ft 9.9s 9s
OK AeroTech I161 92.9oz 50ft/s 336ft/s 7.5G 1,712ft 10.6s 8s
OK AeroTech H999 91.7oz 122ft/s 400ft/s 62.1G 1,735ft 9.9s 10s
OK AeroTech I225 97.1oz 50ft/s 372ft/s 9.4G 1,870ft 10.9s 9s
OK AeroTech I245 92.9oz 72ft/s 381ft/s 15.1G 1,895ft 10.7s 9s
OK Cesaroni I212 96.8oz 49ft/s 383ft/s 8.7G 1,906ft 11.0s 9s
OK AeroTech I357 92.1oz 68ft/s 392ft/s 13.8G 1,916ft 10.7s 9s
OK Cesaroni I566 93.6oz 85ft/s 445ft/s 23.4G 2,072ft 10.8s 10s
OK Cesaroni I195 94.7oz 52ft/s 408ft/s 8.0G 2,171ft 11.7s 10s
OK Cesaroni I345 93.9oz 67ft/s 453ft/s 13.9G 2,255ft 11.5s 10s
OK Cesaroni I170 93.8oz 50ft/s 417ft/s 7.7G 2,257ft 11.9s 10s
OK AeroTech I285 97.4oz 64ft/s 442ft/s 13.0G 2,281ft 11.6s 10s
OK Cesaroni I236 94.1oz 56ft/s 441ft/s 10.9G 2,345ft 11.9s 10s
OK Cesaroni I800 96.1oz 103ft/s 497ft/s 33.5G 2,367ft 11.4s 11s
OK Cesaroni I223 97.4oz 51ft/s 448ft/s 8.5G 2,421ft 12.2s 10s
OK AeroTech I211 96.0oz 59ft/s 434ft/s 11.0G 2,422ft 12.1s 10s
OK AeroTech I305 100.5oz 68ft/s 457ft/s 13.8G 2,433ft 11.9s 10s
OK AeroTech I195 100.2oz 62ft/s 433ft/s 12.0G 2,438ft 12.1s 10s
OK AeroTech I1299 94.9oz 136ft/s 518ft/s 57.2G 2,451ft 11.4s 11s
OK AeroTech I300 95.6oz 70ft/s 467ft/s 16.5G 2,480ft 12.0s 10s
OK Loki I316 99.0oz 78ft/s 490ft/s 17.3G 2,678ft 12.3s 11s
OK Cesaroni I287 101.3oz 58ft/s 504ft/s 11.5G 2,750ft 12.7s 11s
OK Loki I210 99.0oz 68ft/s 472ft/s 15.1G 2,792ft 12.7s 10s
OK Loki I405 99.2oz 99ft/s 532ft/s 28.2G 2,863ft 12.5s 11s
OK Cesaroni I285 97.8oz 62ft/s 528ft/s 12.0G 2,958ft 13.1s 11s
OK Cesaroni I255 98.2oz 58ft/s 525ft/s 10.6G 2,998ft 13.2s 11s
OK Loki I377 99.8oz 83ft/s 544ft/s 22.7G 3,025ft 12.9s 11s
OK Loki I430 99.0oz 77ft/s 570ft/s 18.3G 3,040ft 12.9s 12s
OK AeroTech I327 102.2oz 69ft/s 555ft/s 14.2G 3,095ft 13.1s 11s
OK AMW I297 100.8oz 62ft/s 549ft/s 12.3G 3,104ft 13.2s 11s
OK AeroTech I366 99.6oz 76ft/s 565ft/s 16.7G 3,118ft 13.1s 12s
OK AeroTech I364 103.9oz 67ft/s 555ft/s 13.7G 3,120ft 13.2s 12s
OK Cesaroni I303 97.6oz 66ft/s 559ft/s 14.2G 3,173ft 13.3s 11s
OK Cesaroni I470 97.5oz 83ft/s 599ft/s 19.6G 3,182ft 13.0s 12s
OK Cesaroni I242 99.4oz 56ft/s 545ft/s 9.3G 3,201ft 13.7s 11s
OK Cesaroni I125 102.8oz 49ft/s 447ft/s 8.4G 3,210ft 14.5s 10s
OK AeroTech I280 101.7oz 62ft/s 560ft/s 10.9G 3,213ft 13.5s 12s
OK KBA I301 105.6oz 61ft/s 599ft/s 13.1G 3,347ft 13.5s 12s
OK Cesaroni I350 107.6oz 66ft/s 590ft/s 12.4G 3,364ft 13.7s 12s
OK AeroTech I435 98.3oz 94ft/s 614ft/s 26.7G 3,370ft 13.3s 12s
OK KBA I550 105.1oz 80ft/s 668ft/s 23.6G 3,389ft 13.2s 12s
OK AeroTech I284 99.6oz 74ft/s 596ft/s 16.7G 3,441ft 13.6s 12s
OK AeroTech I500 100.3oz 81ft/s 663ft/s 19.7G 3,659ft 13.8s 12s
OK Loki J396 106.5oz 65ft/s 648ft/s 17.7G 3,708ft 14.1s 13s
warningsW Cesaroni I540 101.1oz 87ft/s 686ft/s 21.8G 3,723ft 13.8s 13s
OK Cesaroni I216 101.2oz 59ft/s 580ft/s 11.0G 3,728ft 14.5s 11s
OK AeroTech I600 101.2oz 97ft/s 685ft/s 28.1G 3,738ft 13.8s 13s
OK AeroTech J420 102.9oz 77ft/s 664ft/s 18.6G 3,771ft 14.1s 12s
OK AeroTech I350 101.7oz 71ft/s 669ft/s 16.5G 3,774ft 14.1s 13s
OK Cesaroni J335 102.1oz 71ft/s 646ft/s 13.5G 3,775ft 14.3s 12s
OK Cesaroni J381 104.3oz 76ft/s 657ft/s 16.4G 3,792ft 14.2s 12s
OK AeroTech J350 103.5oz 93ft/s 665ft/s 27.6G 3,801ft 14.0s 12s
OK Cesaroni J270 103.1oz 57ft/s 628ft/s 9.7G 3,808ft 14.6s 12s
OK KBA J740 105.5oz 97ft/s 711ft/s 32.1G 3,811ft 13.9s 13s
OK Cesaroni J285 101.0oz 64ft/s 633ft/s 12.2G 3,815ft 14.4s 12s
OK AeroTech J340 100.4oz 81ft/s 657ft/s 20.5G 3,821ft 14.1s 12s
OK Cesaroni J316 101.4oz 69ft/s 637ft/s 14.5G 3,837ft 14.4s 12s
OK Cesaroni J357 101.2oz 71ft/s 670ft/s 17.3G 3,866ft 14.3s 12s
OK AeroTech J425 102.3oz 67ft/s 708ft/s 15.1G 3,978ft 14.4s 13s
OK Cesaroni J290 103.3oz 64ft/s 654ft/s 12.7G 3,993ft 14.7s 12s
OK Cesaroni J400 104.8oz 72ft/s 697ft/s 15.6G 4,041ft 14.5s 13s
OK AeroTech J520 107.2oz 105ft/s 707ft/s 33.5G 4,073ft 14.3s 13s
OK AeroTech J270 102.6oz 64ft/s 660ft/s 11.5G 4,111ft 14.9s 12s
OK AeroTech J500 103.1oz 89ft/s 741ft/s 26.6G 4,200ft 14.5s 13s
OK Loki J528 106.3oz 100ft/s 758ft/s 33.6G 4,250ft 14.5s 13s
OK AeroTech J575 112.2oz 98ft/s 774ft/s 27.4G 4,375ft 14.6s 13s
OK Cesaroni J330 104.8oz 70ft/s 722ft/s 14.8G 4,436ft 15.2s 13s
OK Cesaroni J410 105.9oz 76ft/s 754ft/s 16.3G 4,459ft 15.1s 13s
OK AeroTech J435 102.0oz 89ft/s 777ft/s 23.3G 4,504ft 15.0s 13s
OK Cesaroni J425 104.7oz 81ft/s 765ft/s 22.0G 4,509ft 15.0s 13s
OK Loki J712 106.5oz 94ft/s 819ft/s 28.7G 4,552ft 14.9s 14s
OK Loki J320 106.5oz 70ft/s 735ft/s 16.9G 4,651ft 15.5s 13s
OK Cesaroni J354 107.4oz 73ft/s 750ft/s 16.4G 4,677ft 15.5s 13s
OK Cesaroni J520 110.0oz 79ft/s 819ft/s 20.4G 4,736ft 15.3s 14s
OK Cesaroni J580 116.8oz 80ft/s 836ft/s 20.6G 4,866ft 15.5s 14s
OK Loki J650 120.3oz 90ft/s 858ft/s 27.0G 5,054ft 15.7s 14s
OK AeroTech J825 110.9oz 107ft/s 966ft/s 37.2G 5,266ft 15.6s 14s
OK Cesaroni J394 113.1oz 66ft/s 866ft/s 13.3G 5,386ft 16.4s 14s
OK Cesaroni J150 113.5oz 51ft/s 618ft/s 9.3G 5,407ft 18.0s 12s
OK Cesaroni J595 110.5oz 95ft/s 927ft/s 28.6G 5,418ft 15.9s 14s
OK Cesaroni J600 112.0oz 89ft/s 947ft/s 22.3G 5,445ft 16.0s 14s
OK Cesaroni J453 114.0oz 81ft/s 887ft/s 21.9G 5,539ft 16.3s 14s
OK Cesaroni J420 110.8oz 85ft/s 877ft/s 24.5G 5,561ft 16.3s 14s
OK AeroTech J570 111.8oz 106ft/s 906ft/s 36.1G 5,585ft 16.0s 14s
OK Cesaroni J530 114.5oz 91ft/s 971ft/s 24.3G 5,956ft 16.5s 14s
OK AeroTech J510 118.1oz 99ft/s 982ft/s 30.7G 6,145ft 16.7s 14s
OK Loki J1000 120.3oz 113ft/s 1,107ft/s 40.9G 6,229ft 16.5s 15s
OK Loki J1026 121.3oz 114ft/s 1,157ft/s 35.5G 6,432ft 16.8s 16s
OK Loki K1127 121.3oz 119ft/s 1,144ft/s 40.6G 6,460ft 16.8s 15s
OK Loki K627 123.6oz 100ft/s 1,184ft/s 27.8G 7,490ft 17.9s 15s

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 (188ft)
failedG AeroTech G67 speed at end of launch guide too slow (30ft/s)
failedG Loki G69 speed at end of launch guide too slow (32ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (28ft/s)
failedG Loki G70 speed at end of launch guide too slow (33ft/s)
failedG Loki G94 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (28ft/s)
failedG Loki G80 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (27ft/s)
failedG Loki G66 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (29ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (30ft/s)
failedG Contrail G100 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (21ft/s)
failedA Contrail G300 rocket doesn't reach a safe altitude (196ft)
failedG AeroTech H73 speed at end of launch guide too slow (27ft/s)
failedG Loki H100 speed at end of launch guide too slow (39ft/s)
failedG AeroTech H123 speed at end of launch guide too slow (40ft/s)
failedG Contrail H121 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (37ft/s)
failedG Loki H90 speed at end of launch guide too slow (40ft/s)
failedG Loki H125 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (40ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni H152 speed at end of launch guide too slow (45ft/s)
failedG AeroTech H178 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (36ft/s)
failedG AeroTech H170 speed at end of launch guide too slow (47ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (29ft/s)
failedG AeroTech I140 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni I180 speed at end of launch guide too slow (45ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (40ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (21ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni I175 speed at end of launch guide too slow (46ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (40ft/s)
failedG Loki I110 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (38ft/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.)

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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