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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 128 motors that fit and appear to have enough thrust (676 motors didn't fit, 7 motors failed safety checks). 135 motor had thrust curves available and 273 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:   ESRA
Owner: Kevin Dunn
Body Diameter: 4.00in
Dry Weight: 15.00lb
MMT Diameter: 75.0mm
MMT Length: 60.00in
CD: 0.60

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 K707 23.10lb 71ft/s 368ft/s 12.5G 2,214ft 12.1s 10s
OK Contrail K630 22.83lb 55ft/s 381ft/s 7.8G 2,333ft 12.6s 10s
OK Contrail K456 23.17lb 62ft/s 393ft/s 7.7G 2,809ft 13.9s 10s
OK AeroTech K1499 18.84lb 95ft/s 488ft/s 19.8G 2,902ft 13.1s 12s
OK Contrail K678 23.93lb 71ft/s 466ft/s 9.9G 3,382ft 14.8s 12s
OK Contrail K777 23.93lb 82ft/s 470ft/s 15.8G 3,419ft 14.7s 12s
OK Contrail K543 22.95lb 61ft/s 536ft/s 7.8G 4,315ft 16.8s 13s
OK Cesaroni K735 20.53lb 55ft/s 611ft/s 9.0G 4,554ft 16.8s 14s
OK Contrail K404 24.15lb 51ft/s 523ft/s 5.2G 4,883ft 18.6s 12s
OK Contrail K888 24.20lb 79ft/s 625ft/s 11.7G 5,146ft 17.7s 15s
OK AeroTech K780 21.47lb 62ft/s 699ft/s 9.3G 5,567ft 18.3s 15s
OK Cesaroni K555 21.08lb 50ft/s 675ft/s 6.0G 5,769ft 19.3s 15s
OK Cesaroni K2000 20.43lb 98ft/s 808ft/s 27.3G 5,798ft 17.6s 16s
OK AeroTech K560 21.05lb 54ft/s 660ft/s 7.5G 5,925ft 19.2s 14s
OK Cesaroni K1085 20.36lb 72ft/s 779ft/s 12.4G 5,954ft 18.3s 16s
OK Cesaroni K661 20.57lb 56ft/s 718ft/s 7.4G 6,003ft 19.1s 15s
OK Cesaroni K510 20.71lb 56ft/s 663ft/s 6.4G 6,040ft 19.6s 15s
OK Hypertek L355 23.72lb 50ft/s 548ft/s 5.4G 6,115ft 21.3s 12s
OK Hypertek L475 23.59lb 51ft/s 633ft/s 5.4G 6,173ft 20.3s 14s
OK AeroTech K1000 20.74lb 74ft/s 785ft/s 11.6G 6,188ft 18.6s 16s
OK Cesaroni L585 21.14lb 55ft/s 734ft/s 6.1G 6,533ft 20.2s 16s
OK Hypertek L350 23.61lb 48ft/s 608ft/s 5.0G 6,719ft 22.2s 13s
OK Hypertek L535 23.70lb 58ft/s 690ft/s 7.2G 6,730ft 20.6s 15s
OK Hypertek L610 23.71lb 60ft/s 719ft/s 7.6G 6,946ft 20.7s 15s
OK Hypertek L550 23.59lb 59ft/s 693ft/s 7.0G 6,970ft 21.0s 15s
OK Cesaroni L820 22.54lb 55ft/s 830ft/s 8.9G 7,064ft 20.4s 17s
OK Cesaroni L910 20.77lb 69ft/s 869ft/s 10.5G 7,252ft 20.1s 17s
OK Loki L780 22.72lb 50ft/s 843ft/s 8.6G 7,255ft 20.7s 17s
OK Gorilla L789 22.45lb 56ft/s 900ft/s 8.3G 8,032ft 21.5s 17s
OK Cesaroni L3200 22.20lb 120ft/s 1,085ft/s 38.8G 8,037ft 19.9s 19s
OK Contrail L1222 26.00lb 59ft/s 875ft/s 22.8G 8,162ft 21.5s 18s
OK Gorilla L425 22.72lb 55ft/s 713ft/s 6.5G 8,202ft 22.9s 15s
OK Cesaroni L645 23.27lb 53ft/s 855ft/s 6.6G 8,257ft 22.3s 17s
OK AeroTech L1150 23.10lb 76ft/s 982ft/s 12.2G 8,369ft 21.2s 18s
OK Contrail L800 25.42lb 70ft/s 930ft/s 10.9G 8,493ft 21.6s 17s
OK Loki L930 22.80lb 68ft/s 962ft/s 10.1G 8,589ft 21.8s 18s
OK Gorilla L1150 22.72lb 70ft/s 1,002ft/s 16.9G 8,629ft 21.4s 18s
OK Gorilla L985 23.01lb 57ft/s 1,004ft/s 10.4G 8,630ft 21.9s 18s
OK AeroTech L875 25.09lb 60ft/s 943ft/s 8.4G 8,684ft 22.2s 18s
OK Cesaroni L995 22.92lb 76ft/s 978ft/s 11.9G 8,744ft 21.7s 18s
OK AeroTech L850 23.25lb 68ft/s 944ft/s 10.8G 8,804ft 21.9s 17s
OK AeroTech L1040 25.40lb 63ft/s 973ft/s 10.7G 8,805ft 22.0s 18s
OK AeroTech L900 25.41lb 59ft/s 950ft/s 8.6G 8,846ft 22.4s 18s
OK Gorilla L1112 23.00lb 75ft/s 1,021ft/s 11.8G 8,886ft 21.7s 18s
OK Cesaroni L851 23.35lb 61ft/s 973ft/s 8.7G 8,889ft 22.3s 18s
OK AeroTech L1256 23.28lb 78ft/s 1,052ft/s 13.6G 9,025ft 21.7s 19s
OK Cesaroni L1355 25.94lb 81ft/s 1,041ft/s 15.2G 9,029ft 21.7s 19s
OK Cesaroni L1720 22.37lb 92ft/s 1,144ft/s 19.2G 9,035ft 21.2s 19s
OK AeroTech L1520 23.05lb 84ft/s 1,097ft/s 16.1G 9,044ft 21.4s 19s
OK Cesaroni L1050 22.60lb 70ft/s 1,033ft/s 11.3G 9,104ft 22.0s 18s
OK Cesaroni L800 22.74lb 70ft/s 952ft/s 10.8G 9,131ft 22.4s 18s
OK Loki L840 23.26lb 66ft/s 980ft/s 10.6G 9,317ft 22.4s 18s
OK Loki L1482 22.80lb 80ft/s 1,155ft/s 15.5G 9,373ft 21.8s 19s
OK AeroTech L1390 23.55lb 81ft/s 1,103ft/s 15.3G 9,391ft 21.9s 19s
OK AeroTech L1170 26.00lb 74ft/s 1,062ft/s 12.0G 9,496ft 22.4s 19s
OK AeroTech L1250 27.45lb 70ft/s 1,035ft/s 11.7G 9,628ft 22.8s 19s
OK Gorilla L1065 26.82lb 75ft/s 1,036ft/s 14.4G 9,885ft 22.7s 19s
OK Hypertek L540 27.47lb 48ft/s 848ft/s 5.4G 10,095ft 25.5s 16s
OK Cesaroni L1350 22.87lb 83ft/s 1,202ft/s 14.4G 10,290ft 22.6s 19s
OK Contrail L2525 27.30lb 130ft/s 1,140ft/s 33.5G 10,300ft 22.7s 21s
OK Hypertek L570 27.58lb 53ft/s 875ft/s 5.8G 10,396ft 25.4s 16s
OK AMW L1290 26.90lb 69ft/s 1,143ft/s 11.9G 10,481ft 23.5s 20s
OK AeroTech L1420 25.06lb 82ft/s 1,227ft/s 14.5G 10,608ft 23.0s 20s
OK Hypertek L575 27.46lb 49ft/s 882ft/s 5.4G 10,629ft 25.9s 16s
OK Hypertek L625 27.58lb 55ft/s 920ft/s 6.8G 10,750ft 25.4s 17s
OK Cesaroni L1685 28.34lb 91ft/s 1,214ft/s 17.3G 10,764ft 23.1s 20s
OK AeroTech L1365 25.82lb 80ft/s 1,204ft/s 13.4G 10,792ft 23.4s 20s
OK Cesaroni L1410 26.28lb 74ft/s 1,228ft/s 13.6G 10,864ft 23.5s 20s
OK Cesaroni L2375 24.17lb 102ft/s 1,429ft/s 24.5G 11,232ft 22.8s 21s
OK AeroTech L2200 25.54lb 104ft/s 1,352ft/s 27.5G 11,294ft 22.9s 21s
OK Cesaroni L1395 24.53lb 82ft/s 1,294ft/s 15.6G 11,307ft 23.5s 20s
OK Cesaroni L1115 24.71lb 82ft/s 1,198ft/s 14.0G 11,475ft 24.0s 19s
OK Loki M1200 26.83lb 65ft/s 1,219ft/s 12.1G 11,486ft 24.3s 20s
OK AeroTech M1350 25.60lb 84ft/s 1,258ft/s 14.8G 11,591ft 23.8s 20s
OK Gorilla M1355 27.13lb 74ft/s 1,247ft/s 15.1G 11,719ft 24.2s 20s
OK AeroTech M1500 25.79lb 86ft/s 1,313ft/s 14.3G 11,742ft 24.0s 20s
OK Cesaroni M1101 25.89lb 75ft/s 1,225ft/s 11.5G 11,756ft 24.4s 20s
OK Gorilla M745 27.39lb 73ft/s 1,009ft/s 12.0G 11,846ft 25.3s 18s
OK AeroTech M1550 27.44lb 89ft/s 1,322ft/s 16.4G 11,978ft 24.1s 21s
OK Contrail M2281 27.30lb 122ft/s 1,313ft/s 36.8G 12,002ft 23.9s 22s
OK Cesaroni M2250 24.73lb 110ft/s 1,486ft/s 24.1G 12,118ft 23.4s 21s
OK AeroTech M1780 25.39lb 101ft/s 1,394ft/s 20.4G 12,142ft 23.8s 21s
OK AeroTech M1297 25.22lb 88ft/s 1,303ft/s 16.8G 12,158ft 24.1s 20s
OK Loki M900 27.19lb 56ft/s 1,180ft/s 8.0G 12,258ft 25.7s 20s
OK Cesaroni M1230 25.68lb 75ft/s 1,301ft/s 12.6G 12,311ft 24.6s 20s
OK AeroTech M2050 25.05lb 104ft/s 1,455ft/s 22.1G 12,323ft 23.9s 21s
OK Gorilla M1610 30.25lb 75ft/s 1,305ft/s 16.4G 12,361ft 24.8s 21s
OK Gorilla M1665 27.39lb 89ft/s 1,349ft/s 18.3G 12,424ft 24.3s 21s
OK Cesaroni M1830 24.97lb 91ft/s 1,455ft/s 19.1G 12,445ft 24.0s 21s
OK Cesaroni M1770 28.21lb 86ft/s 1,432ft/s 15.8G 12,597ft 24.5s 21s
OK Cesaroni M2075 30.85lb 93ft/s 1,392ft/s 20.7G 12,732ft 24.6s 22s
OK Contrail M1491 25.75lb 109ft/s 1,287ft/s 22.8G 12,781ft 25.0s 22s
OK Gorilla M1952 27.00lb 102ft/s 1,453ft/s 21.7G 12,820ft 24.3s 21s
OK Cesaroni M1160 27.56lb 66ft/s 1,309ft/s 10.6G 12,861ft 25.5s 20s
OK Cesaroni M3100 26.06lb 112ft/s 1,678ft/s 32.6G 13,018ft 23.8s 22s
OK Contrail M711 25.80lb 68ft/s 1,061ft/s 8.9G 13,029ft 27.0s 20s
OK Cesaroni M1810 26.94lb 85ft/s 1,508ft/s 17.2G 13,119ft 24.7s 21s
OK Cesaroni M1670 26.53lb 89ft/s 1,413ft/s 17.8G 13,231ft 25.1s 21s
OK Loki M1882 27.20lb 98ft/s 1,521ft/s 21.2G 13,262ft 24.5s 21s
OK Cesaroni M1675 26.51lb 86ft/s 1,491ft/s 17.2G 13,319ft 24.7s 21s
OK Cesaroni M1401 27.73lb 77ft/s 1,407ft/s 12.6G 13,378ft 25.4s 20s
OK Cesaroni M1400 26.69lb 90ft/s 1,397ft/s 17.6G 13,513ft 25.2s 21s
OK Cesaroni M2080 30.52lb 90ft/s 1,508ft/s 18.8G 13,630ft 25.1s 22s
OK AeroTech M650 26.30lb 70ft/s 1,060ft/s 10.4G 13,656ft 27.0s 16s
OK AMW M2050 30.72lb 90ft/s 1,483ft/s 18.7G 13,661ft 25.3s 22s
OK Loki M2550 27.19lb 112ft/s 1,656ft/s 25.2G 13,706ft 24.5s 22s
OK Loki M1650 27.41lb 114ft/s 1,419ft/s 29.7G 13,714ft 25.1s 20s
OK Cesaroni M1300 27.47lb 100ft/s 1,338ft/s 22.5G 13,734ft 25.4s 20s
OK Cesaroni M3700 27.74lb 126ft/s 1,764ft/s 34.4G 13,951ft 24.5s 23s
OK AeroTech M1315 27.44lb 82ft/s 1,388ft/s 13.7G 14,052ft 25.8s 20s
OK Cesaroni M1540 28.02lb 89ft/s 1,497ft/s 18.4G 14,177ft 25.5s 21s
OK KBA M3500 30.81lb 103ft/s 1,794ft/s 32.4G 14,318ft 25.1s 23s
OK Loki M1969 30.85lb 90ft/s 1,549ft/s 17.8G 14,383ft 25.7s 22s
OK Gorilla M1085 30.56lb 84ft/s 1,238ft/s 16.1G 14,783ft 27.0s 20s
OK Cesaroni M2045 28.38lb 96ft/s 1,673ft/s 20.0G 14,805ft 25.5s 22s
OK AeroTech M1850 29.76lb 91ft/s 1,400ft/s 17.3G 14,849ft 26.4s 20s
OK Cesaroni M2150 28.94lb 94ft/s 1,705ft/s 20.4G 14,937ft 25.6s 22s
OK Gorilla M2925 30.56lb 111ft/s 1,766ft/s 33.8G 15,324ft 25.6s 23s
OK Cesaroni M1590 28.40lb 92ft/s 1,574ft/s 17.4G 15,397ft 26.3s 21s
OK Cesaroni M840 30.33lb 77ft/s 1,221ft/s 13.5G 15,843ft 28.7s 20s
OK KBA M1450 31.79lb 84ft/s 1,482ft/s 15.1G 15,879ft 27.4s 21s
OK Cesaroni M1545 32.37lb 75ft/s 1,563ft/s 12.3G 15,969ft 27.4s 22s
OK AMW M1630 30.95lb 106ft/s 1,531ft/s 23.7G 16,059ft 26.9s 22s
OK Cesaroni M2020 30.50lb 94ft/s 1,729ft/s 19.0G 16,095ft 26.4s 22s
OK AeroTech M685 30.45lb 67ft/s 1,114ft/s 9.3G 16,162ft 29.8s 18s
OK Loki M3000 30.79lb 119ft/s 1,865ft/s 31.9G 16,279ft 26.0s 23s
OK Loki M3464 31.75lb 114ft/s 2,019ft/s 32.3G 16,907ft 26.4s 23s
OK Cesaroni M2245 33.04lb 95ft/s 1,915ft/s 20.5G 17,852ft 27.4s 23s

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 Contrail K300 speed at end of launch guide too slow (44ft/s)
failedG Hypertek L200 speed at end of launch guide too slow (32ft/s)
failedG Gorilla L695 speed at end of launch guide too slow (44ft/s)
failedG Hypertek L225 speed at end of launch guide too slow (36ft/s)
failedG Loki L480 speed at end of launch guide too slow (42ft/s)
failedG Contrail L369 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni L395 speed at end of launch guide too slow (43ft/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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