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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 117 motors that fit and appear to have enough thrust (683 motors didn't fit, 11 motors failed safety checks). 128 motor had thrust curves available and 268 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:   Mega Der Red Max
Owner: Kevin Katz
Body Diameter: 4.00in
Dry Weight: 1,275g
MMT Diameter: 38.0mm
MMT Length: 16.00in
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 Contrail G300 1,819g 138ft/s 172ft/s 44.7G 387ft 4.8s 5s
OK Contrail G130 1,791g 76ft/s 156ft/s 29.5G 394ft 5.0s 4s
OK Loki G69 1,515g 53ft/s 178ft/s 5.6G 530ft 6.0s 4s
OK AeroTech G67 1,476g 51ft/s 185ft/s 5.2G 542ft 6.2s 5s
OK Loki G70 1,517g 54ft/s 187ft/s 5.8G 583ft 6.3s 5s
OK AeroTech G339 1,456g 114ft/s 239ft/s 25.4G 591ft 5.8s 5s
OK Loki G80 1,530g 58ft/s 197ft/s 6.5G 597ft 6.2s 5s
OK Loki G94 1,515g 61ft/s 210ft/s 7.8G 627ft 6.3s 5s
OK Contrail G123 1,786g 72ft/s 214ft/s 19.3G 648ft 6.3s 5s
OK Contrail G100 1,786g 69ft/s 210ft/s 9.4G 670ft 6.5s 5s
OK Cesaroni G185 1,463g 78ft/s 257ft/s 13.1G 686ft 6.3s 6s
OK Loki G66 1,525g 59ft/s 205ft/s 6.7G 699ft 6.9s 5s
OK Cesaroni G60 1,481g 49ft/s 218ft/s 4.9G 737ft 7.1s 5s
OK Contrail H222 1,795g 106ft/s 255ft/s 37.5G 765ft 6.6s 6s
OK Cesaroni G115 1,470g 62ft/s 258ft/s 8.1G 771ft 6.8s 6s
OK Cesaroni G78 1,472g 49ft/s 235ft/s 8.0G 772ft 7.1s 5s
OK Loki H100 1,610g 61ft/s 304ft/s 7.9G 1,096ft 8.0s 6s
warningsW AeroTech H283 1,522g 103ft/s 383ft/s 21.3G 1,113ft 7.5s 7s
OK AeroTech H148 1,584g 75ft/s 351ft/s 11.4G 1,187ft 8.0s 7s
OK AeroTech H130 1,512g 88ft/s 341ft/s 16.5G 1,195ft 7.9s 6s
OK AeroTech H669 1,527g 158ft/s 457ft/s 73.0G 1,211ft 7.5s 7s
OK AeroTech H123 1,550g 64ft/s 333ft/s 8.8G 1,293ft 8.5s 6s
OK AeroTech H100 1,536g 60ft/s 336ft/s 7.4G 1,299ft 8.6s 6s
OK AeroTech H219 1,536g 95ft/s 421ft/s 18.4G 1,307ft 8.0s 7s
OK Loki H144 1,611g 85ft/s 371ft/s 14.7G 1,316ft 8.2s 7s
OK Cesaroni H123 1,572g 59ft/s 379ft/s 8.4G 1,318ft 8.5s 7s
OK Loki H90 1,610g 64ft/s 322ft/s 8.3G 1,325ft 8.7s 6s
OK Cesaroni H143 1,622g 62ft/s 390ft/s 8.7G 1,335ft 8.6s 7s
OK Loki H125 1,617g 77ft/s 355ft/s 11.9G 1,335ft 8.5s 6s
OK AeroTech H242 1,539g 84ft/s 422ft/s 14.6G 1,368ft 8.3s 7s
OK Cesaroni H400 1,559g 110ft/s 498ft/s 27.6G 1,385ft 8.0s 7s
OK Loki H160 1,610g 90ft/s 402ft/s 17.3G 1,395ft 8.3s 7s
OK AeroTech H112 1,654g 52ft/s 337ft/s 5.8G 1,469ft 9.4s 6s
OK Cesaroni H120 1,570g 63ft/s 396ft/s 8.6G 1,469ft 8.9s 7s
OK Cesaroni H125 1,568g 62ft/s 416ft/s 8.5G 1,497ft 9.0s 7s
OK Cesaroni H110 1,600g 55ft/s 388ft/s 6.6G 1,509ft 9.2s 6s
OK Cesaroni H225 1,468g 90ft/s 503ft/s 16.9G 1,519ft 8.4s 7s
OK Cesaroni H152 1,573g 72ft/s 437ft/s 12.8G 1,546ft 8.9s 7s
OK AeroTech H178 1,599g 69ft/s 465ft/s 11.9G 1,549ft 8.8s 7s
OK AeroTech H550 1,591g 143ft/s 600ft/s 40.7G 1,605ft 8.3s 8s
OK Cesaroni H100 1,602g 58ft/s 391ft/s 6.5G 1,608ft 9.5s 7s
OK AeroTech H550 1,598g 142ft/s 593ft/s 40.3G 1,614ft 8.4s 8s
OK AeroTech H999 1,606g 185ft/s 636ft/s 101.2G 1,620ft 8.3s 8s
warningsW Cesaroni H565 1,637g 133ft/s 605ft/s 37.6G 1,629ft 8.4s 8s
OK AeroTech I218 1,647g 91ft/s 498ft/s 16.7G 1,673ft 8.9s 7s
OK AeroTech H170 1,605g 74ft/s 477ft/s 11.7G 1,711ft 9.1s 7s
OK AeroTech I180 1,660g 106ft/s 460ft/s 21.3G 1,720ft 8.9s 7s
OK AeroTech I161 1,641g 78ft/s 467ft/s 12.5G 1,769ft 9.3s 7s
OK Cesaroni I180 1,669g 69ft/s 511ft/s 11.2G 1,780ft 9.3s 7s
OK AeroTech I245 1,640g 104ft/s 529ft/s 24.4G 1,794ft 8.9s 7s
OK AeroTech I357 1,618g 106ft/s 564ft/s 22.9G 1,799ft 8.9s 7s
OK AeroTech I175 1,623g 86ft/s 469ft/s 14.7G 1,809ft 9.4s 7s
OK AeroTech I225 1,761g 76ft/s 521ft/s 14.3G 1,820ft 9.3s 7s
OK Cesaroni I566 1,659g 131ft/s 681ft/s 36.3G 1,820ft 8.7s 8s
OK AeroTech I140 1,631g 69ft/s 448ft/s 10.1G 1,831ft 9.6s 7s
OK Cesaroni I212 1,750g 74ft/s 540ft/s 12.7G 1,850ft 9.4s 8s
OK Cesaroni I800 1,732g 156ft/s 758ft/s 49.1G 1,943ft 8.9s 8s
OK AeroTech I1299 1,697g 208ft/s 800ft/s 89.5G 1,951ft 8.7s 8s
OK Cesaroni I345 1,670g 103ft/s 651ft/s 22.8G 1,970ft 9.2s 8s
OK AeroTech I285 1,768g 97ft/s 608ft/s 20.7G 2,014ft 9.4s 8s
OK AeroTech I154 1,767g 62ft/s 445ft/s 8.7G 2,018ft 10.3s 7s
OK Cesaroni I195 1,692g 78ft/s 552ft/s 13.2G 2,021ft 9.7s 8s
OK AeroTech I305 1,856g 101ft/s 617ft/s 21.3G 2,069ft 9.4s 8s
OK Cesaroni I236 1,675g 89ft/s 600ft/s 17.9G 2,071ft 9.6s 8s
OK Cesaroni I170 1,667g 77ft/s 566ft/s 12.7G 2,073ft 9.8s 7s
OK Cesaroni I175 1,712g 71ft/s 549ft/s 10.2G 2,096ft 9.9s 7s
OK AeroTech I300 1,716g 110ft/s 635ft/s 26.7G 2,103ft 9.4s 8s
OK Cesaroni I223 1,769g 80ft/s 604ft/s 13.6G 2,127ft 9.8s 8s
OK AeroTech I211 1,730g 91ft/s 568ft/s 17.9G 2,128ft 9.7s 7s
OK AeroTech I195 1,847g 94ft/s 562ft/s 18.9G 2,149ft 9.8s 8s
OK Loki I316 1,815g 115ft/s 647ft/s 27.0G 2,203ft 9.5s 8s
OK Loki I405 1,818g 143ft/s 710ft/s 44.1G 2,244ft 9.4s 8s
OK Cesaroni I287 1,880g 87ft/s 669ft/s 16.4G 2,260ft 9.9s 8s
OK Loki I210 1,815g 101ft/s 600ft/s 23.9G 2,335ft 10.0s 8s
OK Loki I430 1,815g 114ft/s 777ft/s 28.9G 2,351ft 9.7s 9s
OK Loki I377 1,835g 130ft/s 704ft/s 35.6G 2,356ft 9.7s 8s
OK Cesaroni I285 1,781g 95ft/s 684ft/s 19.2G 2,359ft 10.0s 8s
OK Cesaroni I470 1,770g 123ft/s 817ft/s 31.1G 2,370ft 9.6s 8s
OK AeroTech I366 1,831g 114ft/s 732ft/s 26.3G 2,386ft 9.8s 8s
OK AeroTech I327 1,903g 102ft/s 727ft/s 22.2G 2,400ft 9.9s 8s
OK Cesaroni I255 1,791g 89ft/s 670ft/s 16.8G 2,406ft 10.1s 8s
OK AeroTech I364 1,953g 98ft/s 710ft/s 20.1G 2,410ft 9.9s 8s
OK AMW I297 1,866g 98ft/s 712ft/s 19.4G 2,426ft 10.0s 8s
warningsW Loki I110 1,864g 66ft/s 494ft/s 13.5G 2,429ft 10.9s 7s
OK Cesaroni I303 1,775g 99ft/s 722ft/s 22.7G 2,448ft 9.9s 8s
OK AeroTech I435 1,793g 140ft/s 808ft/s 42.0G 2,453ft 9.6s 8s
OK AeroTech I280 1,891g 92ft/s 711ft/s 17.2G 2,494ft 10.2s 8s
OK KBA I550 1,987g 122ft/s 844ft/s 30.9G 2,500ft 9.9s 9s
OK Cesaroni I242 1,825g 85ft/s 676ft/s 15.0G 2,534ft 10.4s 8s
OK AeroTech I284 1,831g 110ft/s 742ft/s 25.6G 2,552ft 10.0s 8s
OK Cesaroni I350 2,057g 98ft/s 751ft/s 18.9G 2,562ft 10.3s 8s
OK AeroTech I500 1,851g 117ft/s 875ft/s 30.8G 2,582ft 9.8s 9s
warningsW Cesaroni I540 1,873g 125ft/s 908ft/s 33.2G 2,589ft 9.8s 9s
OK KBA I301 2,000g 93ft/s 711ft/s 19.5G 2,591ft 10.4s 8s
OK AeroTech I600 1,877g 150ft/s 898ft/s 43.7G 2,592ft 9.8s 9s
OK KBA J740 1,999g 148ft/s 974ft/s 45.6G 2,643ft 9.9s 9s
OK KBA J520 1,997g 115ft/s 870ft/s 35.4G 2,654ft 10.1s 9s
OK AeroTech I350 1,891g 104ft/s 839ft/s 24.6G 2,677ft 10.1s 9s
OK AeroTech J350 1,940g 137ft/s 832ft/s 42.3G 2,677ft 10.0s 8s
OK AeroTech J420 1,925g 116ft/s 828ft/s 28.6G 2,681ft 10.1s 9s
OK Loki J396 2,027g 100ft/s 819ft/s 24.3G 2,691ft 10.3s 9s
OK AeroTech J340 1,852g 118ft/s 810ft/s 32.1G 2,711ft 10.1s 8s
OK Cesaroni J335 1,902g 104ft/s 796ft/s 21.1G 2,738ft 10.3s 8s
OK Cesaroni J357 1,876g 111ft/s 827ft/s 27.0G 2,746ft 10.2s 8s
OK AeroTech J425 1,906g 98ft/s 892ft/s 22.1G 2,771ft 10.2s 9s
OK Cesaroni I125 1,922g 76ft/s 514ft/s 13.2G 2,788ft 11.6s 7s
OK Cesaroni J285 1,870g 95ft/s 767ft/s 18.5G 2,790ft 10.5s 8s
OK AeroTech I59 1,762g 62ft/s 360ft/s 8.5G 2,797ft 13.5s 5s
OK Cesaroni J316 1,882g 102ft/s 778ft/s 22.7G 2,823ft 10.6s 8s
OK Cesaroni J270 1,930g 86ft/s 748ft/s 14.4G 2,826ft 10.7s 8s
OK AeroTech J500 1,929g 137ft/s 913ft/s 40.9G 2,827ft 10.1s 9s
OK Cesaroni I216 1,876g 88ft/s 683ft/s 17.4G 2,847ft 10.8s 8s
OK Cesaroni J290 1,935g 99ft/s 776ft/s 19.7G 2,886ft 10.7s 8s
OK AeroTech J270 1,917g 94ft/s 778ft/s 18.0G 2,948ft 10.7s 8s
OK Loki J712 2,027g 142ft/s 1,049ft/s 43.3G 2,968ft 10.2s 9s
OK AeroTech J435 1,899g 127ft/s 940ft/s 36.1G 2,988ft 10.3s 9s
OK Cesaroni J94 1,935g 58ft/s 477ft/s 7.6G 3,276ft 13.4s 6s

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 G61 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (45ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (36ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (46ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (47ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (38ft/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.)

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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