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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 148 motors that fit and appear to have enough thrust (656 motors didn't fit, 7 motors failed safety checks). 155 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:   Sprint Stretch
Owner: John Grove
Body Diameter: 3.00in
Dry Weight: 36.4oz
MMT Diameter: 38.0mm
MMT Length: 20.00in
CD: 0.50

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 55.6oz 145ft/s 201ft/s 51.8G 570ft 5.9s 6s
OK Contrail G130 54.6oz 79ft/s 189ft/s 34.3G 586ft 6.1s 5s
OK Contrail G234 55.6oz 118ft/s 230ft/s 34.4G 749ft 6.7s 6s
OK Loki G69 44.9oz 55ft/s 229ft/s 6.9G 859ft 7.6s 6s
OK AeroTech G61 43.2oz 50ft/s 228ft/s 5.8G 885ft 7.8s 6s
OK AeroTech G67 43.5oz 53ft/s 240ft/s 6.5G 891ft 7.8s 6s
OK Loki G70 44.9oz 57ft/s 242ft/s 7.1G 952ft 8.0s 6s
OK Loki G80 45.4oz 58ft/s 252ft/s 7.9G 972ft 7.9s 6s
OK AeroTech G339 42.8oz 117ft/s 293ft/s 30.8G 982ft 7.5s 7s
OK Contrail G123 54.4oz 77ft/s 261ft/s 22.5G 1,010ft 7.9s 7s
OK Loki G94 44.9oz 63ft/s 268ft/s 9.6G 1,030ft 8.1s 7s
OK Contrail G100 54.4oz 69ft/s 259ft/s 11.1G 1,047ft 8.1s 7s
OK Cesaroni G69 43.3oz 50ft/s 269ft/s 6.2G 1,103ft 8.7s 7s
OK Loki G66 45.2oz 59ft/s 268ft/s 8.2G 1,155ft 8.7s 7s
OK Cesaroni G185 43.0oz 79ft/s 321ft/s 16.3G 1,157ft 8.2s 8s
OK Contrail H300 58.0oz 133ft/s 302ft/s 43.6G 1,170ft 8.3s 8s
OK AeroTech G69 43.5oz 50ft/s 290ft/s 5.9G 1,208ft 8.9s 7s
OK Contrail H222 54.7oz 110ft/s 307ft/s 43.6G 1,211ft 8.4s 8s
OK Cesaroni G60 43.7oz 51ft/s 288ft/s 6.1G 1,237ft 9.1s 7s
OK Contrail H303 57.2oz 143ft/s 325ft/s 48.1G 1,291ft 8.6s 8s
OK Cesaroni G78 43.3oz 50ft/s 309ft/s 9.8G 1,304ft 9.2s 7s
OK Cesaroni G115 43.3oz 64ft/s 330ft/s 9.9G 1,305ft 8.9s 8s
OK Contrail H246 57.5oz 109ft/s 407ft/s 32.3G 1,827ft 10.0s 9s
OK Loki H100 48.2oz 63ft/s 393ft/s 9.9G 1,871ft 10.5s 9s
warningsW AeroTech H283 45.1oz 107ft/s 480ft/s 25.9G 1,962ft 10.1s 9s
OK Contrail H141 58.0oz 83ft/s 414ft/s 15.5G 2,027ft 10.8s 9s
OK AeroTech H148 47.3oz 76ft/s 454ft/s 13.8G 2,065ft 10.7s 9s
OK AeroTech H130 44.8oz 94ft/s 450ft/s 19.9G 2,096ft 10.6s 9s
OK AeroTech H669 45.3oz 164ft/s 559ft/s 87.0G 2,178ft 10.4s 10s
OK AeroTech H123 46.1oz 66ft/s 446ft/s 10.6G 2,256ft 11.3s 9s
OK AeroTech H100 45.6oz 61ft/s 455ft/s 9.2G 2,272ft 11.4s 9s
OK Loki H90 48.2oz 64ft/s 433ft/s 9.9G 2,288ft 11.6s 9s
OK Loki H144 48.3oz 90ft/s 482ft/s 17.5G 2,303ft 11.1s 10s
OK Cesaroni H123 46.9oz 61ft/s 495ft/s 10.4G 2,313ft 11.4s 9s
OK Loki H125 48.5oz 80ft/s 466ft/s 14.3G 2,326ft 11.3s 9s
OK AeroTech H219 45.6oz 94ft/s 540ft/s 22.2G 2,331ft 10.9s 10s
OK Cesaroni H143 48.6oz 63ft/s 507ft/s 11.0G 2,344ft 11.4s 10s
OK AeroTech H242 45.7oz 87ft/s 546ft/s 17.7G 2,441ft 11.2s 10s
OK Loki H160 48.2oz 95ft/s 520ft/s 20.5G 2,465ft 11.3s 10s
OK Cesaroni H400 46.4oz 112ft/s 620ft/s 33.8G 2,512ft 11.1s 10s
OK AeroTech H112 49.8oz 54ft/s 461ft/s 7.0G 2,542ft 12.3s 9s
OK Cesaroni H120 46.8oz 63ft/s 530ft/s 10.4G 2,597ft 11.9s 10s
OK Cesaroni H110 47.9oz 57ft/s 521ft/s 8.2G 2,652ft 12.2s 10s
OK Cesaroni H125 46.7oz 63ft/s 551ft/s 10.5G 2,659ft 12.0s 10s
OK Cesaroni H152 46.9oz 75ft/s 579ft/s 15.3G 2,760ft 12.0s 10s
OK Cesaroni H225 43.2oz 91ft/s 660ft/s 20.5G 2,773ft 11.6s 10s
OK AeroTech H178 47.8oz 72ft/s 608ft/s 15.2G 2,777ft 11.9s 10s
OK Cesaroni H100 47.9oz 58ft/s 536ft/s 7.9G 2,831ft 12.6s 10s
OK AeroTech H550 47.5oz 143ft/s 750ft/s 48.9G 2,967ft 11.6s 11s
OK AeroTech H550 47.8oz 142ft/s 739ft/s 48.3G 2,977ft 11.7s 11s
warningsW Cesaroni H565 49.2oz 134ft/s 747ft/s 46.4G 3,005ft 11.7s 11s
OK AeroTech H999 48.1oz 193ft/s 777ft/s 119.5G 3,012ft 11.6s 11s
OK AeroTech I218 49.5oz 91ft/s 651ft/s 19.9G 3,018ft 12.2s 11s
OK AeroTech H170 48.0oz 76ft/s 639ft/s 14.3G 3,070ft 12.4s 10s
OK AeroTech I180 50.0oz 101ft/s 610ft/s 25.2G 3,077ft 12.3s 10s
OK AeroTech I161 49.3oz 79ft/s 630ft/s 15.0G 3,167ft 12.6s 10s
OK AeroTech H45 49.3oz 49ft/s 439ft/s 5.2G 3,198ft 14.2s 8s
OK Cesaroni I180 50.3oz 71ft/s 673ft/s 14.0G 3,202ft 12.6s 11s
OK AeroTech I175 48.7oz 85ft/s 625ft/s 17.6G 3,248ft 12.8s 11s
OK AeroTech I245 49.3oz 105ft/s 701ft/s 29.4G 3,268ft 12.3s 11s
OK AeroTech I225 53.5oz 80ft/s 683ft/s 17.7G 3,271ft 12.6s 11s
OK AeroTech I140 49.0oz 71ft/s 620ft/s 12.3G 3,273ft 12.9s 10s
OK AeroTech I357 48.5oz 110ft/s 736ft/s 27.2G 3,289ft 12.3s 11s
OK Cesaroni I212 53.2oz 74ft/s 709ft/s 16.2G 3,340ft 12.8s 11s
OK Cesaroni I566 50.0oz 130ft/s 849ft/s 44.4G 3,393ft 12.2s 12s
OK AeroTech I154 53.8oz 63ft/s 618ft/s 10.3G 3,553ft 13.7s 10s
OK Cesaroni I345 50.3oz 106ft/s 843ft/s 26.9G 3,640ft 12.8s 12s
OK Cesaroni I800 52.5oz 156ft/s 932ft/s 61.6G 3,652ft 12.5s 12s
OK Cesaroni I195 51.1oz 78ft/s 746ft/s 15.8G 3,662ft 13.2s 11s
OK AeroTech I285 53.8oz 96ft/s 793ft/s 24.5G 3,681ft 13.0s 12s
OK AeroTech I1299 51.3oz 211ft/s 974ft/s 108.4G 3,698ft 12.4s 12s
OK Cesaroni I170 50.2oz 77ft/s 763ft/s 15.1G 3,760ft 13.4s 11s
OK AeroTech I305 56.9oz 102ft/s 801ft/s 25.3G 3,767ft 13.0s 11s
OK Cesaroni I175 51.8oz 72ft/s 746ft/s 12.4G 3,779ft 13.5s 11s
OK Cesaroni I236 50.5oz 87ft/s 803ft/s 21.2G 3,786ft 13.2s 11s
OK AeroTech I211 52.4oz 91ft/s 770ft/s 21.1G 3,854ft 13.3s 11s
OK AeroTech I300 52.0oz 113ft/s 838ft/s 31.3G 3,859ft 13.1s 11s
OK Cesaroni I223 53.8oz 80ft/s 805ft/s 16.1G 3,866ft 13.4s 11s
OK AeroTech I195 56.6oz 94ft/s 750ft/s 22.1G 3,868ft 13.4s 11s
OK Loki I316 55.4oz 114ft/s 847ft/s 31.8G 4,049ft 13.3s 12s
OK Cesaroni I287 57.7oz 87ft/s 881ft/s 20.6G 4,132ft 13.6s 12s
OK Loki I405 55.6oz 151ft/s 919ft/s 51.2G 4,167ft 13.3s 12s
OK Loki I210 55.4oz 103ft/s 803ft/s 27.7G 4,243ft 13.8s 12s
warningsW Loki I110 57.2oz 68ft/s 683ft/s 15.6G 4,291ft 14.6s 11s
OK Cesaroni I285 54.2oz 98ft/s 921ft/s 22.5G 4,341ft 13.8s 12s
OK Loki I377 56.2oz 128ft/s 928ft/s 41.2G 4,365ft 13.6s 12s
OK Loki I430 55.4oz 114ft/s 1,007ft/s 33.5G 4,387ft 13.6s 12s
OK Cesaroni I255 54.6oz 92ft/s 911ft/s 20.0G 4,411ft 13.9s 12s
OK AeroTech I327 58.6oz 103ft/s 953ft/s 25.6G 4,411ft 13.8s 12s
OK AeroTech I366 56.0oz 113ft/s 975ft/s 30.6G 4,422ft 13.7s 12s
OK AeroTech I364 60.3oz 99ft/s 940ft/s 24.3G 4,425ft 13.8s 12s
OK Cesaroni I470 53.9oz 122ft/s 1,064ft/s 36.3G 4,450ft 13.5s 12s
OK AMW I297 57.2oz 94ft/s 946ft/s 22.5G 4,451ft 13.9s 12s
OK Cesaroni I303 54.0oz 102ft/s 971ft/s 26.5G 4,518ft 13.8s 12s
OK AeroTech I280 58.1oz 94ft/s 957ft/s 19.9G 4,571ft 14.1s 12s
OK AeroTech I435 54.7oz 145ft/s 1,062ft/s 48.8G 4,593ft 13.6s 12s
OK Cesaroni I242 55.8oz 89ft/s 929ft/s 17.4G 4,622ft 14.3s 12s
OK KBA I550 61.5oz 119ft/s 1,063ft/s 37.3G 4,687ft 14.1s 13s
OK Cesaroni I350 64.0oz 95ft/s 984ft/s 21.6G 4,705ft 14.3s 13s
OK AeroTech I284 56.0oz 111ft/s 1,004ft/s 30.4G 4,713ft 13.9s 12s
OK KBA I301 62.0oz 90ft/s 937ft/s 22.6G 4,750ft 14.5s 13s
OK AeroTech I59 53.6oz 64ft/s 475ft/s 10.3G 4,819ft 16.9s 8s
OK AeroTech I500 56.7oz 126ft/s 1,143ft/s 35.6G 4,850ft 13.9s 13s
warningsW Cesaroni I540 57.5oz 132ft/s 1,183ft/s 39.2G 4,883ft 13.9s 13s
OK AeroTech I600 57.6oz 143ft/s 1,169ft/s 50.4G 4,887ft 13.9s 13s
OK Cesaroni I125 59.2oz 77ft/s 730ft/s 15.3G 4,916ft 15.5s 11s
OK KBA J520 61.9oz 122ft/s 1,119ft/s 40.5G 4,978ft 14.3s 13s
OK AeroTech J350 59.9oz 138ft/s 1,103ft/s 48.5G 4,981ft 14.1s 13s
OK AeroTech I350 58.1oz 104ft/s 1,129ft/s 29.7G 4,994ft 14.2s 13s
OK AeroTech J340 56.8oz 118ft/s 1,099ft/s 37.1G 5,001ft 14.1s 12s
OK AeroTech J420 59.3oz 116ft/s 1,108ft/s 33.1G 5,004ft 14.3s 13s
OK Loki J396 62.9oz 100ft/s 1,073ft/s 30.5G 5,004ft 14.5s 13s
OK Cesaroni J381 60.7oz 109ft/s 1,092ft/s 29.1G 5,016ft 14.3s 12s
OK KBA J740 61.9oz 143ft/s 1,213ft/s 54.3G 5,029ft 14.2s 13s
OK Cesaroni J335 58.5oz 104ft/s 1,077ft/s 24.4G 5,059ft 14.4s 12s
OK AeroTech J520 63.1oz 145ft/s 1,097ft/s 50.4G 5,098ft 14.3s 13s
OK Cesaroni J357 57.6oz 112ft/s 1,121ft/s 31.2G 5,100ft 14.3s 13s
OK Cesaroni J285 57.4oz 97ft/s 1,050ft/s 22.0G 5,143ft 14.6s 12s
OK Cesaroni J270 59.5oz 88ft/s 1,036ft/s 17.2G 5,168ft 14.8s 12s
OK Cesaroni I216 57.6oz 86ft/s 952ft/s 20.2G 5,171ft 14.9s 12s
OK AeroTech J425 58.7oz 98ft/s 1,199ft/s 26.9G 5,178ft 14.4s 13s
OK Cesaroni J316 57.8oz 103ft/s 1,054ft/s 26.2G 5,220ft 14.7s 13s
OK Cesaroni J400 61.2oz 106ft/s 1,146ft/s 27.3G 5,250ft 14.5s 13s
OK Loki J474 63.1oz 149ft/s 1,087ft/s 67.4G 5,272ft 14.5s 13s
OK Cesaroni J290 59.7oz 101ft/s 1,068ft/s 22.7G 5,292ft 14.8s 12s
OK AeroTech J500 59.5oz 145ft/s 1,224ft/s 47.1G 5,314ft 14.3s 13s
OK AeroTech J575 68.6oz 142ft/s 1,244ft/s 46.0G 5,362ft 14.4s 13s
OK Loki J528 62.7oz 144ft/s 1,247ft/s 57.7G 5,369ft 14.4s 13s
OK AeroTech J270 59.0oz 96ft/s 1,073ft/s 20.8G 5,400ft 14.9s 12s
OK AeroTech J435 58.4oz 134ft/s 1,273ft/s 41.6G 5,596ft 14.5s 13s
OK Loki J326 63.4oz 134ft/s 1,041ft/s 54.4G 5,603ft 15.1s 13s
OK Cesaroni J425 61.1oz 121ft/s 1,239ft/s 38.5G 5,623ft 14.7s 13s
OK Cesaroni J410 62.3oz 115ft/s 1,218ft/s 28.5G 5,630ft 14.9s 13s
OK Loki J712 62.9oz 148ft/s 1,357ft/s 49.3G 5,640ft 14.7s 13s
OK Cesaroni J330 61.2oz 108ft/s 1,162ft/s 26.1G 5,673ft 15.0s 13s
OK Cesaroni J94 59.7oz 57ft/s 703ft/s 8.8G 5,680ft 17.3s 10s
OK Cesaroni J520 66.4oz 124ft/s 1,312ft/s 34.6G 5,792ft 14.9s 13s
OK Cesaroni J354 63.8oz 110ft/s 1,175ft/s 28.4G 5,864ft 15.1s 13s
OK Cesaroni J580 73.2oz 121ft/s 1,312ft/s 32.3G 5,964ft 15.3s 14s
OK AeroTech J825 67.3oz 161ft/s 1,553ft/s 62.0G 6,140ft 14.9s 14s
OK Cesaroni J595 66.9oz 135ft/s 1,441ft/s 48.0G 6,347ft 15.2s 13s
OK Cesaroni J600 68.4oz 125ft/s 1,488ft/s 37.3G 6,354ft 15.2s 13s
OK Cesaroni J394 69.5oz 97ft/s 1,332ft/s 22.0G 6,494ft 15.8s 13s
OK AeroTech J570 68.2oz 158ft/s 1,377ft/s 59.9G 6,525ft 15.3s 13s
OK Cesaroni J453 70.4oz 125ft/s 1,350ft/s 36.2G 6,565ft 15.6s 13s
OK Cesaroni J420 67.2oz 121ft/s 1,341ft/s 41.0G 6,645ft 15.7s 13s
OK Cesaroni J530 70.9oz 137ft/s 1,477ft/s 40.1G 6,882ft 15.7s 14s
OK Cesaroni J150 69.9oz 75ft/s 909ft/s 15.7G 7,148ft 17.9s 12s

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 Cesaroni G46 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (39ft/s)
failedG AeroTech H73 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 (40ft/s)

G These simulations were run with a launch guide length of 7ft (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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