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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 132 motors that fit and appear to have enough thrust (637 motors didn't fit, 22 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:   Phoenix - Madcow 4in
Owner: Karl Tyrrell
Body Diameter: 4.00in
Dry Weight: 70.8oz
MMT Diameter: 38.0mm
MMT Length: 22.00in
CD: 0.43

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 G130 89.0oz 61ft/s 107ft/s 20.7G 229ft 4.0s 3s
OK Contrail G234 90.0oz 102ft/s 136ft/s 20.7G 313ft 4.5s 4s
OK AeroTech G339 77.2oz 91ft/s 157ft/s 16.6G 373ft 4.9s 4s
OK Loki G94 79.3oz 50ft/s 138ft/s 5.0G 376ft 5.3s 4s
OK Contrail G123 88.8oz 60ft/s 149ft/s 13.4G 420ft 5.4s 4s
OK Contrail G100 88.8oz 56ft/s 146ft/s 6.4G 434ft 5.6s 4s
OK Cesaroni G185 77.4oz 62ft/s 169ft/s 8.6G 444ft 5.5s 5s
OK Cesaroni G115 77.7oz 49ft/s 170ft/s 5.1G 500ft 6.0s 5s
OK Contrail H300 92.4oz 101ft/s 183ft/s 26.9G 536ft 5.8s 5s
OK Contrail H222 89.1oz 85ft/s 183ft/s 26.4G 541ft 5.9s 5s
OK Contrail H303 91.6oz 108ft/s 197ft/s 29.6G 602ft 6.1s 6s
OK Contrail H211 92.0oz 95ft/s 226ft/s 23.7G 814ft 7.2s 6s
OK Loki H100 82.6oz 49ft/s 216ft/s 5.5G 846ft 7.7s 6s
OK Contrail H121 92.4oz 58ft/s 223ft/s 9.3G 900ft 7.9s 6s
OK Contrail H246 91.9oz 94ft/s 248ft/s 19.8G 917ft 7.5s 7s
warningsW AeroTech H283 79.5oz 85ft/s 265ft/s 14.2G 944ft 7.6s 7s
OK AeroTech H148 81.7oz 62ft/s 252ft/s 7.5G 984ft 8.1s 7s
OK AeroTech H130 79.2oz 74ft/s 248ft/s 10.8G 1,010ft 8.1s 6s
OK Contrail H141 92.4oz 67ft/s 249ft/s 9.3G 1,020ft 8.2s 6s
OK AeroTech H100 80.0oz 48ft/s 247ft/s 4.9G 1,076ft 8.8s 6s
OK AeroTech H123 80.5oz 53ft/s 244ft/s 5.7G 1,080ft 8.7s 6s
OK Loki H90 82.6oz 51ft/s 239ft/s 5.4G 1,092ft 8.8s 6s
OK AeroTech H669 79.7oz 130ft/s 312ft/s 49.0G 1,122ft 8.0s 8s
OK Cesaroni H123 81.3oz 48ft/s 272ft/s 5.6G 1,127ft 8.8s 7s
OK Loki H125 82.9oz 63ft/s 264ft/s 7.9G 1,161ft 8.8s 7s
OK Cesaroni H143 83.0oz 50ft/s 282ft/s 6.1G 1,167ft 8.9s 7s
OK Loki H144 82.7oz 71ft/s 275ft/s 9.8G 1,167ft 8.6s 7s
OK AeroTech H219 80.0oz 77ft/s 303ft/s 12.2G 1,203ft 8.6s 7s
OK AeroTech H242 80.1oz 69ft/s 305ft/s 9.7G 1,264ft 8.9s 7s
OK Loki H160 82.6oz 74ft/s 299ft/s 11.6G 1,296ft 8.9s 7s
OK Cesaroni H120 81.2oz 51ft/s 295ft/s 5.6G 1,326ft 9.5s 7s
OK Cesaroni H400 80.8oz 91ft/s 348ft/s 18.8G 1,361ft 8.9s 8s
OK Cesaroni H125 81.1oz 49ft/s 308ft/s 5.8G 1,378ft 9.7s 8s
OK Cesaroni H152 81.3oz 58ft/s 327ft/s 8.4G 1,483ft 9.8s 8s
OK AeroTech H178 82.2oz 57ft/s 344ft/s 8.5G 1,522ft 9.8s 8s
OK Cesaroni H225 77.6oz 72ft/s 363ft/s 11.0G 1,538ft 9.6s 8s
OK AeroTech I218 83.9oz 76ft/s 381ft/s 11.3G 1,744ft 10.2s 9s
OK AeroTech H170 82.4oz 60ft/s 369ft/s 8.0G 1,756ft 10.4s 8s
OK AeroTech H550 82.2oz 116ft/s 424ft/s 27.5G 1,771ft 9.9s 9s
OK AeroTech H550 81.9oz 117ft/s 428ft/s 27.7G 1,781ft 9.9s 9s
OK AeroTech I180 84.4oz 86ft/s 364ft/s 14.5G 1,794ft 10.3s 8s
warningsW Cesaroni H565 83.6oz 114ft/s 430ft/s 27.0G 1,796ft 10.0s 9s
OK AeroTech H999 82.5oz 156ft/s 445ft/s 69.1G 1,822ft 9.9s 10s
OK AeroTech I161 83.7oz 63ft/s 370ft/s 8.4G 1,836ft 10.7s 8s
OK Cesaroni I180 84.7oz 59ft/s 393ft/s 8.1G 1,870ft 10.8s 9s
OK AeroTech I140 83.4oz 58ft/s 365ft/s 6.8G 1,885ft 11.0s 9s
OK AeroTech I225 87.9oz 64ft/s 409ft/s 10.4G 1,973ft 10.9s 9s
OK AeroTech I245 83.7oz 91ft/s 418ft/s 16.8G 1,989ft 10.6s 9s
OK AeroTech I357 82.9oz 88ft/s 432ft/s 15.5G 2,008ft 10.7s 9s
OK Cesaroni I212 87.6oz 62ft/s 422ft/s 9.6G 2,011ft 11.0s 9s
OK AeroTech I154 88.2oz 52ft/s 372ft/s 5.9G 2,083ft 11.8s 8s
OK Cesaroni I566 84.4oz 109ft/s 494ft/s 25.7G 2,137ft 10.7s 10s
OK Cesaroni I195 85.5oz 66ft/s 447ft/s 9.0G 2,263ft 11.6s 10s
OK Cesaroni I345 84.7oz 84ft/s 499ft/s 15.6G 2,316ft 11.3s 10s
OK Cesaroni I170 84.6oz 64ft/s 457ft/s 8.6G 2,343ft 11.8s 9s
OK AeroTech I285 88.2oz 81ft/s 483ft/s 14.4G 2,344ft 11.4s 10s
OK Cesaroni I175 86.2oz 58ft/s 449ft/s 7.1G 2,348ft 11.9s 9s
OK Cesaroni I800 86.9oz 130ft/s 550ft/s 36.7G 2,396ft 11.1s 11s
OK Cesaroni I236 84.9oz 73ft/s 483ft/s 12.2G 2,411ft 11.7s 10s
OK AeroTech I1299 85.7oz 171ft/s 573ft/s 63.4G 2,463ft 11.1s 11s
OK AeroTech I305 91.3oz 84ft/s 498ft/s 15.3G 2,472ft 11.6s 10s
OK Cesaroni I223 88.2oz 65ft/s 490ft/s 9.5G 2,481ft 11.9s 10s
OK AeroTech I211 86.8oz 76ft/s 472ft/s 12.3G 2,481ft 11.9s 10s
OK AeroTech I195 91.0oz 79ft/s 469ft/s 13.3G 2,495ft 11.9s 10s
OK AeroTech I300 86.4oz 90ft/s 511ft/s 18.4G 2,520ft 11.7s 10s
OK Loki I316 89.8oz 99ft/s 531ft/s 19.2G 2,693ft 11.9s 10s
warningsW Loki I110 91.6oz 54ft/s 430ft/s 9.4G 2,718ft 13.0s 9s
OK Cesaroni I287 92.1oz 73ft/s 548ft/s 12.5G 2,764ft 12.3s 11s
OK AeroTech I59 88.0oz 52ft/s 285ft/s 5.9G 2,809ft 14.8s 6s
OK Loki I210 89.8oz 84ft/s 508ft/s 16.7G 2,813ft 12.4s 10s
OK Loki I405 90.0oz 118ft/s 577ft/s 31.1G 2,844ft 12.0s 11s
OK Cesaroni I285 88.6oz 77ft/s 572ft/s 13.3G 2,948ft 12.6s 11s
OK Cesaroni I255 89.0oz 76ft/s 569ft/s 11.8G 2,989ft 12.8s 11s
OK Loki I377 90.6oz 106ft/s 588ft/s 25.1G 2,994ft 12.4s 11s
OK Loki I430 89.8oz 97ft/s 622ft/s 20.3G 3,007ft 12.4s 11s
OK AeroTech I327 93.0oz 86ft/s 601ft/s 15.7G 3,056ft 12.7s 11s
OK AMW I297 91.6oz 81ft/s 595ft/s 13.7G 3,071ft 12.7s 11s
OK AeroTech I366 90.4oz 96ft/s 612ft/s 18.5G 3,072ft 12.6s 11s
OK AeroTech I364 94.7oz 83ft/s 599ft/s 15.0G 3,077ft 12.7s 11s
OK Cesaroni I470 88.3oz 105ft/s 654ft/s 21.7G 3,117ft 12.5s 11s
OK Cesaroni I303 88.4oz 82ft/s 605ft/s 15.8G 3,130ft 12.8s 11s
OK AeroTech I280 92.5oz 76ft/s 605ft/s 12.1G 3,170ft 13.0s 11s
OK Cesaroni I242 90.2oz 72ft/s 588ft/s 10.4G 3,173ft 13.2s 11s
OK KBA I301 96.4oz 79ft/s 645ft/s 14.4G 3,230ft 12.8s 11s
OK KBA I550 95.9oz 102ft/s 729ft/s 25.8G 3,231ft 12.4s 11s
OK Cesaroni I125 93.6oz 61ft/s 475ft/s 9.3G 3,244ft 14.1s 10s
OK AeroTech I435 89.1oz 118ft/s 666ft/s 29.5G 3,275ft 12.7s 11s
OK Cesaroni I350 98.4oz 81ft/s 636ft/s 13.7G 3,297ft 13.1s 11s
OK AeroTech I284 90.4oz 93ft/s 641ft/s 18.4G 3,352ft 13.0s 11s
OK AeroTech I500 91.1oz 102ft/s 718ft/s 21.8G 3,521ft 13.1s 12s
warningsW Cesaroni I540 91.9oz 111ft/s 744ft/s 24.0G 3,569ft 13.1s 12s
OK AeroTech I600 92.0oz 125ft/s 741ft/s 31.1G 3,580ft 13.1s 12s
OK Loki J396 97.3oz 86ft/s 696ft/s 19.3G 3,585ft 13.4s 12s
OK AeroTech J420 93.7oz 99ft/s 714ft/s 20.5G 3,628ft 13.4s 12s
OK AeroTech I350 92.5oz 89ft/s 720ft/s 18.2G 3,629ft 13.4s 12s
OK Cesaroni I216 92.0oz 72ft/s 619ft/s 12.2G 3,641ft 13.9s 11s
OK AeroTech J350 94.3oz 114ft/s 714ft/s 30.4G 3,646ft 13.3s 12s
OK Cesaroni J335 92.9oz 88ft/s 693ft/s 14.9G 3,646ft 13.5s 12s
OK Cesaroni J381 95.1oz 95ft/s 706ft/s 18.1G 3,649ft 13.5s 12s
OK KBA J740 96.3oz 125ft/s 773ft/s 34.6G 3,649ft 13.2s 12s
OK AeroTech J340 91.2oz 101ft/s 706ft/s 22.7G 3,668ft 13.4s 11s
OK Cesaroni J285 91.8oz 79ft/s 677ft/s 13.4G 3,689ft 13.7s 11s
OK Cesaroni J270 93.9oz 73ft/s 671ft/s 10.6G 3,694ft 13.9s 11s
OK Cesaroni J357 92.0oz 89ft/s 719ft/s 19.1G 3,714ft 13.5s 12s
OK Cesaroni J316 92.2oz 86ft/s 682ft/s 16.1G 3,716ft 13.7s 12s
OK Cesaroni J94 94.1oz 48ft/s 460ft/s 5.2G 3,734ft 15.9s 9s
OK AeroTech J425 93.1oz 84ft/s 763ft/s 16.5G 3,803ft 13.6s 12s
OK Cesaroni J290 94.1oz 83ft/s 697ft/s 14.0G 3,843ft 14.0s 12s
OK Cesaroni J400 95.6oz 92ft/s 746ft/s 17.1G 3,860ft 13.7s 12s
OK AeroTech J520 98.0oz 137ft/s 757ft/s 36.7G 3,876ft 13.5s 12s
OK AeroTech J270 93.4oz 78ft/s 701ft/s 12.8G 3,945ft 14.1s 12s
OK AeroTech J500 93.9oz 115ft/s 794ft/s 29.4G 3,975ft 13.6s 12s
OK Loki J528 97.1oz 128ft/s 814ft/s 36.8G 4,015ft 13.6s 12s
OK AeroTech J575 103.0oz 127ft/s 827ft/s 29.9G 4,104ft 13.7s 12s
OK Cesaroni J330 95.6oz 93ft/s 767ft/s 16.3G 4,210ft 14.3s 12s
OK Cesaroni J410 96.7oz 95ft/s 803ft/s 18.0G 4,215ft 14.2s 12s
OK AeroTech J435 92.8oz 113ft/s 830ft/s 25.7G 4,236ft 14.0s 12s
OK Cesaroni J425 95.5oz 102ft/s 816ft/s 24.2G 4,247ft 14.1s 12s
OK Loki J712 97.3oz 122ft/s 882ft/s 31.5G 4,267ft 13.9s 13s
OK Loki J320 97.3oz 92ft/s 778ft/s 18.6G 4,409ft 14.6s 12s
OK Cesaroni J354 98.2oz 90ft/s 791ft/s 18.1G 4,413ft 14.5s 12s
OK Cesaroni J520 100.8oz 100ft/s 873ft/s 22.4G 4,429ft 14.3s 13s
OK Cesaroni J580 107.6oz 100ft/s 888ft/s 21.8G 4,547ft 14.5s 13s
OK AeroTech J825 101.7oz 141ft/s 1,032ft/s 40.6G 4,835ft 14.4s 13s
OK Cesaroni J595 101.3oz 113ft/s 977ft/s 31.3G 4,985ft 14.7s 13s
OK Cesaroni J600 102.8oz 113ft/s 1,004ft/s 24.4G 5,005ft 14.8s 13s
OK Cesaroni J394 103.9oz 86ft/s 910ft/s 14.4G 5,008ft 15.2s 13s
OK Cesaroni J453 104.8oz 102ft/s 929ft/s 24.0G 5,119ft 15.1s 13s
OK AeroTech J570 102.6oz 139ft/s 949ft/s 39.4G 5,135ft 14.9s 13s
OK Cesaroni J420 101.6oz 107ft/s 920ft/s 26.8G 5,147ft 15.1s 13s
OK Cesaroni J150 104.3oz 63ft/s 635ft/s 10.2G 5,194ft 17.0s 11s
OK Cesaroni J530 105.3oz 116ft/s 1,020ft/s 26.6G 5,449ft 15.2s 13s

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 (40ft/s)
failedG Loki G69 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (38ft/s)
failedG Loki G70 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (37ft/s)
failedG Loki G80 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (36ft/s)
failedG Loki G66 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (38ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (28ft/s)
failedA Contrail G300 rocket doesn't reach a safe altitude (235ft)
failedG AeroTech H73 speed at end of launch guide too slow (36ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (37ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (30ft/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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