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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 49 motors that fit and appear to have enough thrust (758 motors didn't fit, 4 motors failed safety checks). 53 motor had thrust curves available and 99 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:   Big Red Baby
Owner: Ian McMahon
Body Diameter: 7.67in
Dry Weight: 18.90lb
MMT Diameter: 75.0mm
MMT Length: 26.00in
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 AeroTech K1499 22.74lb 87ft/s 391ft/s 16.2G 1,671ft 9.8s 9s
OK Cesaroni K735 24.43lb 50ft/s 468ft/s 7.2G 2,547ft 12.5s 10s
OK AeroTech K780 25.37lb 57ft/s 533ft/s 7.4G 3,075ft 13.5s 10s
OK Cesaroni K2000 24.33lb 92ft/s 643ft/s 22.1G 3,106ft 12.6s 11s
OK Cesaroni K1085 24.26lb 65ft/s 597ft/s 9.8G 3,208ft 13.3s 11s
OK AeroTech K560 24.95lb 49ft/s 476ft/s 5.9G 3,273ft 14.3s 9s
OK Cesaroni K661 24.47lb 50ft/s 532ft/s 5.9G 3,278ft 14.1s 10s
OK Cesaroni K510 24.61lb 51ft/s 472ft/s 5.2G 3,333ft 14.7s 10s
OK AeroTech K1000 24.64lb 70ft/s 599ft/s 9.4G 3,340ft 13.5s 11s
OK Cesaroni L585 25.04lb 49ft/s 530ft/s 4.9G 3,567ft 15.0s 10s
OK Cesaroni L820 26.44lb 51ft/s 622ft/s 7.0G 3,828ft 14.9s 11s
OK Cesaroni L910 24.67lb 62ft/s 645ft/s 8.2G 3,863ft 14.6s 11s
OK Cesaroni L3200 26.10lb 109ft/s 871ft/s 31.5G 4,148ft 13.8s 13s
OK Gorilla L789 26.35lb 52ft/s 660ft/s 6.5G 4,295ft 15.6s 11s
OK AeroTech L1150 27.00lb 70ft/s 737ft/s 9.9G 4,432ft 15.1s 12s
OK Cesaroni L645 27.17lb 49ft/s 609ft/s 5.0G 4,475ft 16.5s 11s
OK Gorilla L1150 26.62lb 64ft/s 747ft/s 13.1G 4,528ft 15.2s 12s
OK Gorilla L425 26.62lb 50ft/s 491ft/s 5.4G 4,530ft 17.3s 9s
OK Gorilla L985 26.91lb 53ft/s 748ft/s 8.3G 4,555ft 15.7s 12s
OK Loki L930 26.70lb 61ft/s 706ft/s 8.5G 4,562ft 15.7s 12s
OK Cesaroni L995 26.82lb 70ft/s 715ft/s 9.5G 4,635ft 15.5s 12s
OK Cesaroni L1720 26.27lb 82ft/s 876ft/s 15.7G 4,657ft 14.9s 13s
OK Gorilla L1112 26.90lb 70ft/s 767ft/s 9.9G 4,687ft 15.5s 12s
OK AeroTech L875 28.99lb 54ft/s 700ft/s 6.4G 4,690ft 16.2s 12s
OK AeroTech L850 27.15lb 63ft/s 683ft/s 8.9G 4,703ft 15.8s 11s
OK AeroTech L1520 26.95lb 79ft/s 835ft/s 13.0G 4,709ft 15.1s 13s
OK Cesaroni L851 27.25lb 56ft/s 704ft/s 7.0G 4,733ft 16.2s 12s
OK AeroTech L1256 27.18lb 72ft/s 785ft/s 11.2G 4,736ft 15.4s 12s
OK AeroTech L900 29.31lb 56ft/s 707ft/s 6.6G 4,773ft 16.3s 12s
OK Cesaroni L1050 26.50lb 64ft/s 760ft/s 9.1G 4,788ft 15.7s 12s
OK Cesaroni L1355 29.84lb 73ft/s 786ft/s 12.2G 4,791ft 15.5s 12s
OK Loki L1482 26.70lb 71ft/s 877ft/s 12.3G 4,849ft 15.3s 13s
OK Cesaroni L800 26.64lb 63ft/s 677ft/s 9.1G 4,867ft 16.2s 11s
OK AeroTech L1390 27.45lb 72ft/s 828ft/s 12.5G 4,900ft 15.5s 13s
OK Loki L840 27.16lb 60ft/s 704ft/s 8.7G 4,952ft 16.2s 11s
OK AeroTech L1170 29.90lb 70ft/s 803ft/s 10.1G 5,044ft 16.0s 12s
OK Cesaroni L1350 26.77lb 77ft/s 885ft/s 11.6G 5,311ft 15.9s 13s
OK AeroTech L1420 28.96lb 74ft/s 913ft/s 11.3G 5,502ft 16.2s 13s
OK AeroTech L1365 29.72lb 72ft/s 897ft/s 11.4G 5,642ft 16.5s 13s
OK Cesaroni L2375 28.07lb 93ft/s 1,090ft/s 19.8G 5,664ft 15.7s 14s
OK Cesaroni L1395 28.43lb 77ft/s 951ft/s 13.3G 5,824ft 16.5s 13s
OK Cesaroni L1115 28.61lb 76ft/s 855ft/s 12.0G 5,998ft 17.1s 12s
OK AeroTech M1350 29.50lb 76ft/s 920ft/s 12.5G 6,017ft 16.7s 13s
OK Cesaroni M2250 28.63lb 100ft/s 1,112ft/s 19.8G 6,104ft 16.0s 14s
OK Cesaroni M1101 29.79lb 70ft/s 870ft/s 9.9G 6,158ft 17.4s 13s
OK AeroTech M1780 29.29lb 95ft/s 1,034ft/s 17.4G 6,205ft 16.5s 13s
OK AeroTech M1297 29.12lb 84ft/s 937ft/s 14.4G 6,291ft 17.0s 13s
OK Cesaroni M1830 28.87lb 88ft/s 1,068ft/s 16.4G 6,321ft 16.6s 13s
OK Cesaroni M1230 29.58lb 70ft/s 929ft/s 10.4G 6,385ft 17.4s 13s

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 K555 speed at end of launch guide too slow (44ft/s)
failedG Gorilla L695 speed at end of launch guide too slow (40ft/s)
failedG Loki L780 speed at end of launch guide too slow (46ft/s)
failedG Loki L480 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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