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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 121 motors that fit and appear to have enough thrust (636 motors didn't fit, 34 motors failed safety checks). 155 motor had thrust curves available and 321 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 Super Batray
Owner: Erik Czerwin
Body Diameter: 4.00in
Dry Weight: 67.9oz
MMT Diameter: 38.0mm
MMT Length: 24.00in
CD: 0.44

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 86.1oz 55ft/s 111ft/s 21.4G 244ft 4.1s 3s
OK Contrail G300 87.1oz 101ft/s 126ft/s 32.7G 249ft 3.9s 4s
OK Contrail G234 87.1oz 88ft/s 141ft/s 21.5G 332ft 4.6s 4s
OK AeroTech G339 74.3oz 81ft/s 164ft/s 17.2G 397ft 5.0s 5s
OK Contrail G123 85.9oz 53ft/s 155ft/s 13.9G 446ft 5.5s 4s
OK Contrail G100 85.9oz 50ft/s 152ft/s 6.6G 461ft 5.7s 4s
OK Cesaroni G185 74.5oz 56ft/s 176ft/s 9.0G 473ft 5.6s 5s
OK Contrail H300 89.5oz 97ft/s 190ft/s 27.8G 564ft 5.9s 5s
OK Contrail H222 86.2oz 77ft/s 189ft/s 27.3G 571ft 6.0s 5s
OK Contrail H303 88.7oz 104ft/s 204ft/s 30.6G 633ft 6.3s 6s
OK Contrail H211 89.1oz 87ft/s 234ft/s 24.5G 851ft 7.3s 6s
OK Contrail H121 89.5oz 52ft/s 231ft/s 9.7G 943ft 8.0s 6s
OK Contrail H246 89.0oz 83ft/s 256ft/s 20.5G 956ft 7.6s 7s
warningsW AeroTech H283 76.6oz 74ft/s 276ft/s 14.8G 988ft 7.8s 7s
OK AeroTech H148 78.8oz 54ft/s 262ft/s 7.9G 1,032ft 8.3s 7s
OK AeroTech H130 76.3oz 63ft/s 258ft/s 11.2G 1,057ft 8.2s 7s
OK Contrail H141 89.5oz 61ft/s 258ft/s 9.7G 1,064ft 8.3s 7s
OK AeroTech H669 76.8oz 114ft/s 324ft/s 50.8G 1,166ft 8.1s 8s
OK Loki H125 80.0oz 55ft/s 274ft/s 8.2G 1,211ft 8.9s 7s
OK Loki H144 79.8oz 62ft/s 285ft/s 10.2G 1,216ft 8.7s 7s
OK AeroTech H219 77.1oz 69ft/s 315ft/s 12.7G 1,250ft 8.7s 8s
OK AeroTech H242 77.2oz 61ft/s 317ft/s 10.1G 1,314ft 9.0s 8s
OK Loki H160 79.7oz 67ft/s 310ft/s 12.0G 1,344ft 9.0s 8s
OK Cesaroni H400 77.9oz 80ft/s 361ft/s 19.6G 1,407ft 9.0s 8s
OK Cesaroni H152 78.4oz 51ft/s 339ft/s 8.7G 1,536ft 9.9s 8s
OK AeroTech H178 79.3oz 49ft/s 357ft/s 8.8G 1,573ft 9.9s 8s
OK Cesaroni H225 74.7oz 64ft/s 377ft/s 11.4G 1,587ft 9.7s 8s
OK AeroTech I218 81.0oz 66ft/s 394ft/s 11.7G 1,791ft 10.3s 9s
OK AeroTech H170 79.5oz 53ft/s 382ft/s 8.3G 1,807ft 10.5s 8s
OK AeroTech H550 79.3oz 105ft/s 440ft/s 28.5G 1,812ft 9.9s 9s
OK AeroTech H550 79.0oz 105ft/s 444ft/s 28.7G 1,821ft 9.9s 9s
warningsW Cesaroni H565 80.7oz 99ft/s 446ft/s 27.9G 1,837ft 10.0s 9s
OK AeroTech I180 81.5oz 75ft/s 376ft/s 15.0G 1,841ft 10.4s 8s
OK AeroTech H999 79.6oz 136ft/s 462ft/s 71.7G 1,860ft 9.9s 10s
OK AeroTech I161 80.8oz 56ft/s 383ft/s 8.7G 1,886ft 10.7s 8s
OK Cesaroni I180 81.8oz 50ft/s 406ft/s 8.4G 1,919ft 10.8s 9s
OK AeroTech I140 80.5oz 49ft/s 377ft/s 7.1G 1,938ft 11.0s 9s
OK AeroTech I225 85.0oz 56ft/s 423ft/s 10.8G 2,018ft 10.9s 9s
OK AeroTech I245 80.8oz 78ft/s 432ft/s 17.5G 2,031ft 10.6s 9s
OK AeroTech I357 80.0oz 77ft/s 447ft/s 16.1G 2,049ft 10.7s 9s
OK Cesaroni I212 84.7oz 54ft/s 436ft/s 9.9G 2,056ft 11.1s 9s
OK Cesaroni I566 81.5oz 93ft/s 511ft/s 26.5G 2,172ft 10.7s 10s
OK Cesaroni I195 82.6oz 57ft/s 462ft/s 9.3G 2,306ft 11.6s 10s
OK Cesaroni I345 81.8oz 78ft/s 516ft/s 16.1G 2,352ft 11.3s 10s
OK AeroTech I285 85.3oz 72ft/s 498ft/s 15.0G 2,380ft 11.4s 10s
OK Cesaroni I170 81.7oz 56ft/s 472ft/s 8.9G 2,385ft 11.8s 9s
OK Cesaroni I175 83.3oz 52ft/s 463ft/s 7.4G 2,392ft 11.9s 9s
OK Cesaroni I800 84.0oz 112ft/s 569ft/s 37.9G 2,423ft 11.1s 11s
OK Cesaroni I236 82.0oz 66ft/s 498ft/s 12.6G 2,448ft 11.7s 10s
OK AeroTech I1299 82.8oz 150ft/s 593ft/s 65.7G 2,486ft 11.1s 11s
OK AeroTech I305 88.4oz 73ft/s 512ft/s 15.8G 2,502ft 11.6s 10s
OK AeroTech I211 83.9oz 67ft/s 486ft/s 12.8G 2,517ft 11.8s 10s
OK Cesaroni I223 85.3oz 56ft/s 505ft/s 9.8G 2,518ft 11.9s 10s
OK AeroTech I195 88.1oz 69ft/s 483ft/s 13.8G 2,531ft 11.9s 10s
OK AeroTech I300 83.5oz 81ft/s 526ft/s 19.1G 2,551ft 11.6s 10s
OK Loki I316 86.9oz 84ft/s 546ft/s 19.8G 2,720ft 11.9s 10s
warningsW Loki I110 88.7oz 49ft/s 442ft/s 9.7G 2,763ft 13.0s 9s
OK Cesaroni I287 89.2oz 65ft/s 565ft/s 12.9G 2,790ft 12.3s 10s
OK Loki I210 86.9oz 73ft/s 522ft/s 17.3G 2,842ft 12.3s 10s
OK Loki I405 87.1oz 104ft/s 593ft/s 32.2G 2,862ft 12.0s 11s
OK Cesaroni I285 85.7oz 68ft/s 589ft/s 13.8G 2,970ft 12.6s 11s
OK Loki I377 87.7oz 95ft/s 604ft/s 26.0G 3,011ft 12.3s 11s
OK Cesaroni I255 86.1oz 64ft/s 585ft/s 12.3G 3,012ft 12.7s 11s
OK Loki I430 86.9oz 83ft/s 641ft/s 21.0G 3,023ft 12.4s 11s
OK AeroTech I327 90.1oz 75ft/s 618ft/s 16.3G 3,072ft 12.6s 11s
OK AeroTech I366 87.5oz 84ft/s 629ft/s 19.1G 3,086ft 12.5s 11s
OK AMW I297 88.7oz 71ft/s 612ft/s 14.1G 3,088ft 12.7s 11s
OK AeroTech I364 91.8oz 72ft/s 615ft/s 15.5G 3,092ft 12.6s 11s
OK Cesaroni I470 85.4oz 89ft/s 674ft/s 22.5G 3,127ft 12.4s 11s
OK Cesaroni I303 85.5oz 71ft/s 622ft/s 16.4G 3,145ft 12.7s 11s
OK AeroTech I280 89.6oz 67ft/s 621ft/s 12.5G 3,186ft 12.9s 11s
OK Cesaroni I242 87.3oz 61ft/s 603ft/s 10.8G 3,193ft 13.1s 11s
OK KBA I550 93.0oz 92ft/s 751ft/s 26.6G 3,217ft 12.3s 11s
OK KBA I301 93.5oz 70ft/s 662ft/s 14.9G 3,226ft 12.7s 11s
OK AeroTech I435 86.2oz 104ft/s 685ft/s 30.6G 3,279ft 12.6s 11s
OK Cesaroni I125 90.7oz 55ft/s 485ft/s 9.6G 3,281ft 14.0s 9s
OK Cesaroni I350 95.5oz 73ft/s 653ft/s 14.1G 3,308ft 13.0s 11s
OK AeroTech I284 87.5oz 83ft/s 657ft/s 19.1G 3,358ft 12.9s 11s
OK AeroTech I500 88.2oz 92ft/s 738ft/s 22.5G 3,517ft 12.9s 12s
warningsW Cesaroni I540 89.0oz 99ft/s 765ft/s 24.8G 3,562ft 13.0s 12s
OK AeroTech I600 89.1oz 110ft/s 761ft/s 32.1G 3,572ft 12.9s 12s
OK Loki J396 94.4oz 75ft/s 714ft/s 19.9G 3,585ft 13.3s 12s
OK AeroTech J420 90.8oz 86ft/s 732ft/s 21.2G 3,624ft 13.2s 12s
OK AeroTech I350 89.6oz 81ft/s 740ft/s 18.8G 3,624ft 13.3s 12s
OK AeroTech J350 91.4oz 102ft/s 733ft/s 31.4G 3,638ft 13.1s 12s
OK KBA J740 93.4oz 111ft/s 795ft/s 35.5G 3,640ft 13.0s 12s
OK Cesaroni J381 92.2oz 81ft/s 724ft/s 18.7G 3,644ft 13.3s 11s
OK Cesaroni J335 90.0oz 76ft/s 711ft/s 15.5G 3,645ft 13.4s 11s
OK Cesaroni I216 89.1oz 64ft/s 633ft/s 12.7G 3,651ft 13.8s 11s
OK AeroTech J340 88.3oz 86ft/s 724ft/s 23.5G 3,661ft 13.2s 11s
OK Cesaroni J285 88.9oz 71ft/s 694ft/s 13.9G 3,690ft 13.6s 11s
OK Cesaroni J270 91.0oz 62ft/s 687ft/s 10.9G 3,698ft 13.8s 11s
OK Cesaroni J357 89.1oz 81ft/s 738ft/s 19.8G 3,708ft 13.4s 12s
OK Cesaroni J316 89.3oz 75ft/s 699ft/s 16.6G 3,718ft 13.6s 11s
OK AeroTech J425 90.2oz 77ft/s 783ft/s 17.0G 3,792ft 13.5s 12s
OK Cesaroni J290 91.2oz 73ft/s 713ft/s 14.5G 3,839ft 13.8s 11s
OK Cesaroni J400 92.7oz 79ft/s 764ft/s 17.6G 3,849ft 13.6s 12s
OK AeroTech J520 95.1oz 119ft/s 776ft/s 37.9G 3,861ft 13.4s 12s
OK AeroTech J270 90.5oz 69ft/s 717ft/s 13.2G 3,938ft 14.0s 11s
OK AeroTech J500 91.0oz 101ft/s 814ft/s 30.3G 3,955ft 13.4s 12s
OK Loki J528 94.2oz 113ft/s 835ft/s 38.0G 3,993ft 13.4s 12s
OK AeroTech J575 100.1oz 111ft/s 847ft/s 30.8G 4,073ft 13.5s 12s
OK Cesaroni J330 92.7oz 80ft/s 785ft/s 16.9G 4,191ft 14.1s 12s
OK Cesaroni J410 93.8oz 83ft/s 822ft/s 18.6G 4,192ft 14.0s 12s
OK AeroTech J435 89.9oz 93ft/s 850ft/s 26.6G 4,207ft 13.8s 12s
OK Cesaroni J425 92.6oz 92ft/s 835ft/s 25.0G 4,220ft 13.9s 12s
OK Loki J712 94.4oz 107ft/s 905ft/s 32.5G 4,235ft 13.7s 13s
OK Cesaroni J354 95.3oz 83ft/s 807ft/s 18.7G 4,387ft 14.3s 12s
OK Loki J320 94.4oz 80ft/s 794ft/s 19.2G 4,389ft 14.4s 12s
OK Cesaroni J520 97.9oz 89ft/s 893ft/s 23.1G 4,393ft 14.1s 12s
OK Cesaroni J580 104.7oz 90ft/s 908ft/s 22.2G 4,510ft 14.3s 13s
OK AeroTech J825 98.8oz 120ft/s 1,057ft/s 41.9G 4,775ft 14.2s 13s
OK Cesaroni J595 98.4oz 99ft/s 997ft/s 32.3G 4,926ft 14.5s 13s
OK Cesaroni J600 99.9oz 100ft/s 1,025ft/s 25.1G 4,945ft 14.5s 13s
OK Cesaroni J394 101.0oz 74ft/s 927ft/s 14.8G 4,962ft 15.0s 13s
OK Cesaroni J453 101.9oz 91ft/s 947ft/s 24.7G 5,065ft 14.9s 13s
OK AeroTech J570 99.7oz 119ft/s 967ft/s 40.6G 5,074ft 14.6s 13s
OK Cesaroni J420 98.7oz 96ft/s 938ft/s 27.6G 5,095ft 14.9s 12s
OK Cesaroni J150 101.4oz 55ft/s 644ft/s 10.5G 5,190ft 16.9s 10s
OK Cesaroni J530 102.4oz 102ft/s 1,039ft/s 27.3G 5,378ft 15.0s 13s
OK AeroTech J510 106.0oz 111ft/s 1,038ft/s 34.3G 5,542ft 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 (35ft/s)
failedG Loki G69 speed at end of launch guide too slow (37ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (33ft/s)
failedG Loki G70 speed at end of launch guide too slow (38ft/s)
failedG Loki G94 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (33ft/s)
failedG Loki G80 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (26ft/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 (41ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (34ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (34ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (24ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (31ft/s)
failedG Loki H100 speed at end of launch guide too slow (43ft/s)
failedG AeroTech H123 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (41ft/s)
failedG Loki H90 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (45ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (40ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (33ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (46ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (24ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (26ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (42ft/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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