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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 85 motors that fit and appear to have enough thrust (706 motors didn't fit, 14 motors failed safety checks). 99 motor had thrust curves available and 220 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:   Zephyr
Owner: David Head
Body Diameter: 102.0mm
Dry Weight: 1,200g
MMT Diameter: 38.0mm
MMT Length: 350.0mm
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 Loki G69 1,440g 15m/s 59m/s 5.9G 192m 6.5s 5s
OK Loki G70 1,442g 16m/s 62m/s 6.2G 212m 6.9s 5s
OK Loki G80 1,455g 16m/s 65m/s 6.9G 217m 6.8s 5s
OK AeroTech G339 1,381g 32m/s 77m/s 26.9G 217m 6.4s 6s
OK Loki G94 1,440g 17m/s 69m/s 8.3G 229m 6.9s 5s
OK Cesaroni G185 1,388g 22m/s 84m/s 14.0G 254m 7.0s 6s
OK Loki G66 1,450g 16m/s 68m/s 7.2G 256m 7.5s 5s
OK Cesaroni G115 1,395g 18m/s 85m/s 8.6G 286m 7.6s 6s
OK Loki H100 1,535g 17m/s 101m/s 8.5G 410m 8.9s 7s
warningsW AeroTech H283 1,447g 28m/s 126m/s 22.6G 423m 8.5s 8s
OK AeroTech H148 1,509g 21m/s 117m/s 12.1G 448m 9.0s 8s
OK AeroTech H130 1,437g 25m/s 115m/s 17.4G 453m 8.9s 7s
OK AeroTech H669 1,452g 46m/s 148m/s 76.8G 466m 8.6s 8s
OK AeroTech H123 1,475g 18m/s 113m/s 9.3G 489m 9.5s 7s
OK AeroTech H100 1,461g 17m/s 114m/s 7.9G 491m 9.6s 7s
OK Loki H90 1,535g 18m/s 109m/s 8.7G 499m 9.8s 7s
OK AeroTech H219 1,461g 27m/s 141m/s 19.5G 499m 9.1s 8s
OK Loki H144 1,536g 24m/s 124m/s 15.5G 499m 9.3s 8s
OK Cesaroni H123 1,497g 16m/s 127m/s 8.9G 500m 9.6s 8s
OK Loki H125 1,542g 21m/s 119m/s 12.6G 505m 9.6s 8s
OK Cesaroni H143 1,547g 18m/s 131m/s 9.4G 507m 9.6s 8s
OK AeroTech H242 1,464g 24m/s 141m/s 15.5G 524m 9.4s 8s
OK Loki H160 1,535g 26m/s 134m/s 18.2G 532m 9.4s 8s
OK Cesaroni H400 1,484g 32m/s 163m/s 29.4G 535m 9.2s 9s
OK AeroTech H112 1,579g 15m/s 116m/s 6.1G 554m 10.5s 7s
OK Cesaroni H120 1,495g 18m/s 134m/s 9.1G 560m 10.0s 8s
OK Cesaroni H125 1,493g 17m/s 140m/s 9.1G 572m 10.1s 8s
OK Cesaroni H110 1,525g 16m/s 132m/s 7.1G 573m 10.3s 8s
OK Cesaroni H225 1,393g 26m/s 169m/s 17.9G 588m 9.6s 8s
OK Cesaroni H152 1,498g 20m/s 148m/s 13.5G 592m 10.0s 8s
OK AeroTech H178 1,524g 19m/s 156m/s 13.0G 595m 10.0s 8s
OK Cesaroni H100 1,527g 16m/s 134m/s 6.9G 611m 10.7s 8s
OK AeroTech H550 1,516g 41m/s 197m/s 43.0G 627m 9.5s 9s
OK AeroTech H550 1,523g 41m/s 195m/s 42.6G 630m 9.6s 9s
OK AeroTech H999 1,531g 52m/s 207m/s 106.3G 635m 9.5s 9s
warningsW Cesaroni H565 1,562g 38m/s 198m/s 39.7G 636m 9.7s 9s
OK AeroTech I218 1,572g 26m/s 168m/s 17.6G 646m 10.1s 9s
OK AeroTech H170 1,530g 22m/s 162m/s 12.3G 658m 10.3s 8s
OK AeroTech I180 1,585g 30m/s 156m/s 22.3G 661m 10.2s 8s
OK AeroTech I161 1,566g 22m/s 159m/s 13.2G 680m 10.5s 8s
OK Cesaroni I180 1,594g 20m/s 172m/s 12.0G 686m 10.6s 9s
OK AeroTech I245 1,565g 31m/s 179m/s 25.9G 696m 10.2s 9s
OK AeroTech I357 1,543g 30m/s 190m/s 24.1G 699m 10.2s 9s
OK AeroTech I225 1,686g 22m/s 176m/s 15.3G 702m 10.5s 9s
OK AeroTech I140 1,556g 19m/s 155m/s 10.7G 703m 10.8s 8s
OK Cesaroni I566 1,584g 35m/s 224m/s 38.8G 714m 10.1s 9s
OK Cesaroni I212 1,675g 21m/s 182m/s 13.9G 715m 10.7s 9s
OK Cesaroni I800 1,657g 42m/s 248m/s 52.6G 766m 10.3s 10s
OK AeroTech I154 1,692g 18m/s 154m/s 9.1G 770m 11.6s 8s
OK Cesaroni I345 1,595g 29m/s 218m/s 24.0G 770m 10.5s 9s
OK AeroTech I1299 1,622g 58m/s 260m/s 95.2G 773m 10.1s 10s
OK Cesaroni I195 1,617g 22m/s 189m/s 13.9G 782m 11.0s 9s
OK AeroTech I285 1,693g 28m/s 205m/s 21.8G 783m 10.8s 9s
OK Cesaroni I170 1,592g 22m/s 193m/s 13.4G 802m 11.1s 9s
OK AeroTech I305 1,781g 28m/s 207m/s 22.5G 804m 10.8s 9s
OK Cesaroni I236 1,600g 25m/s 204m/s 18.8G 805m 10.9s 9s
OK Cesaroni I175 1,638g 21m/s 188m/s 10.8G 809m 11.3s 9s
OK AeroTech I300 1,641g 31m/s 215m/s 27.9G 819m 10.8s 9s
OK AeroTech I211 1,655g 26m/s 195m/s 18.8G 824m 11.0s 9s
OK Cesaroni I223 1,694g 22m/s 205m/s 14.3G 825m 11.1s 9s
OK AeroTech I195 1,772g 26m/s 191m/s 19.8G 830m 11.2s 9s
OK Loki I316 1,740g 31m/s 219m/s 28.4G 860m 11.0s 10s
OK Cesaroni I287 1,805g 25m/s 227m/s 17.7G 880m 11.3s 10s
OK Loki I405 1,743g 41m/s 239m/s 46.1G 880m 10.9s 10s
OK Loki I210 1,740g 28m/s 205m/s 24.9G 906m 11.4s 9s
OK Cesaroni I285 1,706g 27m/s 234m/s 20.1G 921m 11.4s 10s
OK Loki I377 1,760g 38m/s 239m/s 37.2G 923m 11.2s 10s
OK Loki I430 1,740g 31m/s 261m/s 30.2G 924m 11.2s 10s
warningsW Loki I110 1,789g 19m/s 171m/s 14.1G 929m 12.3s 8s
OK Cesaroni I470 1,695g 33m/s 275m/s 32.5G 934m 11.1s 10s
OK AeroTech I366 1,756g 32m/s 250m/s 27.5G 935m 11.2s 10s
OK AeroTech I327 1,828g 30m/s 246m/s 23.1G 937m 11.4s 10s
OK Cesaroni I255 1,716g 25m/s 230m/s 17.8G 937m 11.5s 10s
OK AeroTech I364 1,878g 27m/s 242m/s 21.4G 941m 11.4s 10s
OK Cesaroni I303 1,700g 28m/s 247m/s 23.8G 957m 11.4s 10s
OK AeroTech I435 1,718g 40m/s 274m/s 43.9G 966m 11.1s 10s
OK Cesaroni I242 1,750g 24m/s 234m/s 15.7G 985m 11.9s 9s
OK AeroTech I284 1,756g 32m/s 255m/s 27.1G 998m 11.5s 10s
OK AeroTech I600 1,802g 39m/s 303m/s 45.5G 1,025m 11.3s 10s
OK AeroTech J350 1,865g 38m/s 283m/s 44.1G 1,052m 11.5s 10s
OK AeroTech J420 1,850g 32m/s 283m/s 29.9G 1,054m 11.7s 10s
OK AeroTech I59 1,687g 17m/s 121m/s 9.0G 1,056m 14.7s 6s
OK AeroTech J340 1,777g 35m/s 279m/s 33.5G 1,061m 11.6s 9s
OK Cesaroni J357 1,801g 31m/s 284m/s 28.2G 1,077m 11.8s 10s
OK AeroTech J500 1,854g 40m/s 313m/s 42.7G 1,116m 11.7s 10s

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 (14m/s)
failedG AeroTech G61 speed at end of launch guide too slow (14m/s)
failedG Cesaroni G69 speed at end of launch guide too slow (13m/s)
failedG Cesaroni G46 speed at end of launch guide too slow (11m/s)
failedG Cesaroni G79 speed at end of launch guide too slow (13m/s)
failedG Cesaroni G60 speed at end of launch guide too slow (14m/s)
failedG AeroTech G69 speed at end of launch guide too slow (14m/s)
failedG Cesaroni G58 speed at end of launch guide too slow (11m/s)
failedG Cesaroni G78 speed at end of launch guide too slow (14m/s)
failedG Cesaroni G50 speed at end of launch guide too slow (10m/s)
failedG AeroTech H73 speed at end of launch guide too slow (13m/s)
failedG AeroTech H45 speed at end of launch guide too slow (13m/s)
failedG AeroTech I49 speed at end of launch guide too slow (10m/s)
failedG Cesaroni I55 speed at end of launch guide too slow (11m/s)

G These simulations were run with a launch guide length of 2m (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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