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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 120 motors that fit and appear to have enough thrust (685 motors didn't fit, 5 motors failed safety checks). 125 motor had thrust curves available and 239 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:   Drago 4XL
Owner: Erik Czerwin
Body Diameter: 4.02in
Dry Weight: 5,414g
MMT Diameter: 75.0mm
MMT Length: 48.00in
CD: 0.40

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 9,088g 77ft/s 434ft/s 14.5G 2,964ft 13.8s 12s
OK Contrail K630 8,964g 58ft/s 453ft/s 9.2G 3,154ft 14.5s 12s
OK Contrail K456 9,118g 67ft/s 469ft/s 9.0G 3,776ft 15.9s 12s
OK AeroTech K1499 7,155g 108ft/s 593ft/s 23.9G 4,029ft 15.3s 14s
OK Contrail K300 9,473g 48ft/s 460ft/s 4.7G 4,313ft 18.2s 12s
OK Contrail K678 9,464g 76ft/s 549ft/s 11.5G 4,486ft 16.9s 14s
OK Contrail K777 9,464g 89ft/s 553ft/s 18.3G 4,525ft 16.8s 14s
OK Contrail K543 9,020g 67ft/s 638ft/s 9.2G 5,760ft 19.1s 16s
OK Cesaroni K735 7,923g 62ft/s 742ft/s 10.9G 6,179ft 19.2s 16s
OK Contrail K404 9,564g 56ft/s 627ft/s 6.1G 6,487ft 21.0s 15s
OK Contrail K888 9,587g 83ft/s 734ft/s 13.6G 6,766ft 20.0s 17s
OK AeroTech K780 8,348g 65ft/s 842ft/s 11.1G 7,446ft 20.8s 18s
OK Cesaroni K2000 7,878g 108ft/s 969ft/s 32.6G 7,731ft 20.0s 19s
OK Cesaroni K555 8,173g 54ft/s 826ft/s 7.3G 7,767ft 21.8s 18s
OK AeroTech K560 8,158g 59ft/s 806ft/s 9.1G 7,923ft 21.7s 17s
OK Cesaroni K1085 7,844g 78ft/s 943ft/s 14.9G 7,964ft 20.8s 19s
OK Cesaroni K661 7,942g 61ft/s 875ft/s 9.0G 8,055ft 21.7s 18s
OK Cesaroni K510 8,004g 61ft/s 814ft/s 7.7G 8,117ft 22.2s 17s
OK Hypertek L355 9,368g 55ft/s 668ft/s 6.3G 8,147ft 23.8s 14s
OK Hypertek L475 9,312g 55ft/s 760ft/s 6.4G 8,174ft 22.9s 16s
OK AeroTech K1000 8,016g 84ft/s 947ft/s 14.0G 8,242ft 21.1s 19s
OK Gorilla L695 8,816g 48ft/s 898ft/s 12.0G 8,328ft 22.1s 18s
OK Cesaroni L585 8,198g 60ft/s 896ft/s 7.4G 8,721ft 22.7s 18s
OK Hypertek L535 9,362g 63ft/s 824ft/s 8.4G 8,857ft 23.2s 17s
OK Hypertek L350 9,317g 53ft/s 738ft/s 5.9G 8,930ft 24.8s 15s
OK Hypertek L610 9,365g 65ft/s 857ft/s 9.0G 9,124ft 23.3s 18s
OK Hypertek L550 9,312g 63ft/s 830ft/s 8.2G 9,170ft 23.6s 17s
OK Cesaroni L820 8,834g 61ft/s 998ft/s 10.6G 9,322ft 23.0s 19s
OK Loki L780 8,914g 54ft/s 1,013ft/s 10.3G 9,574ft 23.3s 20s
OK Cesaroni L910 8,030g 75ft/s 1,052ft/s 12.6G 9,601ft 22.7s 19s
OK Cesaroni L3200 8,678g 128ft/s 1,285ft/s 45.8G 10,510ft 22.5s 21s
OK Gorilla L789 8,792g 62ft/s 1,084ft/s 9.9G 10,548ft 24.1s 20s
OK Gorilla L425 8,916g 61ft/s 871ft/s 7.7G 10,793ft 25.6s 18s
OK Cesaroni L645 9,166g 59ft/s 1,032ft/s 7.8G 10,821ft 24.9s 20s
OK AeroTech L1150 9,088g 82ft/s 1,171ft/s 14.4G 10,921ft 23.8s 21s
OK Loki L930 8,952g 73ft/s 1,154ft/s 12.1G 11,218ft 24.4s 20s
OK Gorilla L1150 8,916g 75ft/s 1,196ft/s 20.0G 11,257ft 24.0s 21s
OK AeroTech L875 9,991g 64ft/s 1,119ft/s 10.1G 11,269ft 24.9s 20s
OK Gorilla L985 9,046g 63ft/s 1,203ft/s 12.4G 11,294ft 24.5s 21s
OK Cesaroni L995 9,005g 81ft/s 1,170ft/s 14.0G 11,387ft 24.3s 21s
OK AeroTech L1040 10,131g 70ft/s 1,150ft/s 12.6G 11,391ft 24.7s 21s
OK AeroTech L850 9,156g 73ft/s 1,129ft/s 12.6G 11,436ft 24.5s 20s
OK AeroTech L900 10,138g 63ft/s 1,126ft/s 10.2G 11,472ft 25.1s 21s
OK Gorilla L1112 9,042g 80ft/s 1,217ft/s 13.9G 11,571ft 24.4s 21s
OK Cesaroni L851 9,203g 66ft/s 1,168ft/s 10.4G 11,591ft 25.0s 21s
OK Cesaroni L1355 10,376g 84ft/s 1,225ft/s 17.8G 11,627ft 24.3s 21s
OK AeroTech L1256 9,170g 86ft/s 1,253ft/s 16.1G 11,732ft 24.4s 21s
OK AeroTech L1520 9,065g 93ft/s 1,303ft/s 19.0G 11,758ft 24.1s 22s
OK Cesaroni L1720 8,755g 95ft/s 1,363ft/s 22.7G 11,768ft 23.9s 22s
OK Cesaroni L1050 8,862g 75ft/s 1,236ft/s 13.4G 11,861ft 24.7s 21s
OK Cesaroni L800 8,925g 75ft/s 1,144ft/s 12.7G 11,896ft 25.1s 20s
OK Loki L840 9,162g 71ft/s 1,174ft/s 12.6G 12,089ft 25.1s 20s
OK AeroTech L1390 9,293g 85ft/s 1,309ft/s 17.9G 12,188ft 24.6s 22s
OK Loki L1482 8,952g 85ft/s 1,376ft/s 18.9G 12,193ft 24.4s 22s
OK AeroTech L1170 10,404g 82ft/s 1,250ft/s 14.0G 12,237ft 25.1s 21s
OK AeroTech L1250 11,061g 76ft/s 1,206ft/s 13.3G 12,389ft 25.6s 22s
OK Gorilla L1065 10,777g 78ft/s 1,212ft/s 16.5G 12,692ft 25.5s 22s
OK Cesaroni L1350 8,985g 87ft/s 1,434ft/s 17.1G 13,320ft 25.3s 22s
OK AMW L1290 10,813g 72ft/s 1,340ft/s 13.8G 13,496ft 26.3s 23s
OK AeroTech L1420 9,976g 85ft/s 1,450ft/s 17.1G 13,665ft 25.8s 23s
OK Cesaroni L1685 11,465g 97ft/s 1,417ft/s 20.1G 13,731ft 25.8s 23s
OK AeroTech L1365 10,322g 83ft/s 1,417ft/s 15.6G 13,873ft 26.2s 22s
OK Cesaroni L1410 10,529g 77ft/s 1,447ft/s 16.0G 13,970ft 26.3s 23s
OK Cesaroni L2375 9,575g 109ft/s 1,687ft/s 28.8G 14,460ft 25.5s 23s
OK AeroTech L2200 10,197g 111ft/s 1,583ft/s 31.8G 14,495ft 25.8s 23s
OK Cesaroni L1395 9,737g 90ft/s 1,534ft/s 18.0G 14,553ft 26.3s 23s
OK Loki M1200 10,782g 69ft/s 1,435ft/s 14.2G 14,727ft 27.1s 23s
OK Cesaroni L1115 9,818g 89ft/s 1,424ft/s 16.2G 14,746ft 26.8s 22s
OK AeroTech M1350 10,222g 87ft/s 1,484ft/s 17.1G 14,850ft 26.6s 23s
OK Gorilla M1355 10,915g 80ft/s 1,462ft/s 17.6G 15,020ft 27.1s 23s
OK Cesaroni M1101 10,352g 78ft/s 1,454ft/s 13.2G 15,056ft 27.2s 22s
OK AeroTech M1500 10,310g 89ft/s 1,548ft/s 16.7G 15,076ft 26.8s 23s
OK Gorilla M745 11,034g 75ft/s 1,193ft/s 13.7G 15,132ft 28.2s 21s
OK AeroTech M1550 11,059g 96ft/s 1,549ft/s 18.7G 15,314ft 27.0s 23s
OK Cesaroni M2250 9,829g 118ft/s 1,751ft/s 28.1G 15,530ft 26.1s 24s
OK AeroTech M1297 10,051g 95ft/s 1,542ft/s 19.3G 15,548ft 26.9s 23s
OK AeroTech M1780 10,129g 108ft/s 1,639ft/s 23.3G 15,551ft 26.6s 23s
OK Loki M900 10,944g 60ft/s 1,400ft/s 9.3G 15,705ft 28.6s 23s
OK Cesaroni M1230 10,258g 78ft/s 1,543ft/s 14.7G 15,751ft 27.4s 23s
OK Gorilla M1610 12,332g 80ft/s 1,511ft/s 18.9G 15,762ft 27.8s 24s
OK AeroTech M2050 9,973g 112ft/s 1,713ft/s 25.3G 15,834ft 26.8s 24s
OK Gorilla M1665 11,034g 96ft/s 1,578ft/s 21.1G 15,886ft 27.2s 24s
OK Cesaroni M1830 9,938g 99ft/s 1,719ft/s 21.9G 15,942ft 26.8s 24s
OK Cesaroni M1770 11,407g 87ft/s 1,673ft/s 18.2G 16,078ft 27.4s 24s
OK Cesaroni M2075 12,605g 104ft/s 1,608ft/s 23.2G 16,205ft 27.6s 25s
OK Gorilla M1952 10,857g 108ft/s 1,696ft/s 24.6G 16,362ft 27.2s 24s
OK Cesaroni M1160 11,112g 69ft/s 1,548ft/s 12.3G 16,410ft 28.3s 23s
OK Cesaroni M3100 10,432g 127ft/s 1,964ft/s 37.9G 16,644ft 26.6s 25s
OK Cesaroni M1810 10,830g 91ft/s 1,771ft/s 19.9G 16,741ft 27.5s 24s
OK Loki M1882 10,948g 104ft/s 1,778ft/s 24.6G 16,915ft 27.4s 24s
OK Cesaroni M1670 10,645g 97ft/s 1,651ft/s 20.2G 16,981ft 28.2s 24s
OK Cesaroni M1675 10,637g 92ft/s 1,753ft/s 19.8G 16,991ft 27.6s 24s
OK Cesaroni M1401 11,188g 84ft/s 1,655ft/s 14.4G 17,023ft 28.3s 23s
OK Cesaroni M1400 10,716g 97ft/s 1,646ft/s 20.0G 17,224ft 28.1s 23s
OK Cesaroni M2080 12,454g 95ft/s 1,744ft/s 21.3G 17,309ft 28.1s 25s
OK AeroTech M650 10,539g 77ft/s 1,264ft/s 11.9G 17,355ft 29.8s 18s
OK AMW M2050 12,543g 95ft/s 1,713ft/s 21.3G 17,385ft 28.4s 25s
OK Loki M1650 11,044g 121ft/s 1,664ft/s 33.6G 17,423ft 28.0s 23s
OK Cesaroni M1300 11,071g 106ft/s 1,583ft/s 25.5G 17,436ft 28.2s 23s
OK Loki M2550 10,944g 118ft/s 1,934ft/s 29.0G 17,486ft 27.4s 25s
OK AeroTech M1315 11,059g 88ft/s 1,632ft/s 15.7G 17,825ft 28.6s 23s
OK Cesaroni M3700 11,192g 131ft/s 2,046ft/s 39.5G 17,845ft 27.5s 26s
OK Cesaroni M1540 11,320g 96ft/s 1,758ft/s 20.7G 18,000ft 28.4s 24s
OK KBA M3500 12,587g 107ft/s 2,069ft/s 37.8G 18,231ft 28.1s 26s
OK Loki M1969 12,603g 95ft/s 1,795ft/s 20.2G 18,238ft 28.8s 25s
OK Gorilla M1085 12,472g 89ft/s 1,448ft/s 18.0G 18,703ft 30.1s 23s
OK AeroTech M1850 12,107g 97ft/s 1,630ft/s 19.4G 18,771ft 29.4s 23s
OK Cesaroni M2045 11,485g 101ft/s 1,955ft/s 22.9G 18,817ft 28.5s 25s
OK Cesaroni M2150 11,738g 100ft/s 1,993ft/s 23.4G 18,977ft 28.6s 25s
OK Gorilla M2925 12,472g 115ft/s 2,031ft/s 39.0G 19,481ft 28.8s 26s
OK Cesaroni M1590 11,490g 98ft/s 1,848ft/s 19.7G 19,525ft 29.2s 24s
OK Cesaroni M840 12,368g 83ft/s 1,447ft/s 15.2G 20,015ft 31.7s 23s
OK KBA M1450 13,029g 90ft/s 1,720ft/s 16.8G 20,098ft 30.6s 25s
OK Cesaroni M1545 13,292g 79ft/s 1,826ft/s 14.1G 20,191ft 30.5s 25s
OK AMW M1630 12,651g 118ft/s 1,781ft/s 26.4G 20,332ft 30.0s 25s
OK Cesaroni M2020 12,446g 99ft/s 2,010ft/s 21.5G 20,347ft 29.5s 25s
OK AeroTech M685 12,422g 72ft/s 1,322ft/s 10.4G 20,393ft 32.8s 21s
OK Loki M3000 12,574g 128ft/s 2,150ft/s 35.6G 20,589ft 29.1s 26s
OK Loki M3464 13,011g 126ft/s 2,321ft/s 35.9G 21,418ft 29.6s 27s
OK Cesaroni M2245 13,596g 99ft/s 2,215ft/s 23.2G 22,530ft 30.6s 26s

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 Hypertek L200 speed at end of launch guide too slow (35ft/s)
failedG Hypertek L225 speed at end of launch guide too slow (40ft/s)
failedG Loki L480 speed at end of launch guide too slow (45ft/s)
failedG Contrail L369 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni L395 speed at end of launch guide too slow (46ft/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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