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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 84 motors that fit and appear to have enough thrust (685 motors didn't fit, 36 motors failed safety checks). 120 motor had thrust curves available and 253 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:   Polecat Aerospace Goblin 5.5 (38mm)
Owner: K Sonesen
Body Diameter: 5.50in
Dry Weight: 97.0oz
MMT Diameter: 38.0mm
MMT Length: 15.00in
CD: 0.55

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 Cesaroni G185 103.6oz 53ft/s 120ft/s 6.1G 236ft 4.1s 3s
warningsW AeroTech H283 105.7oz 72ft/s 191ft/s 10.4G 519ft 5.7s 5s
OK AeroTech H148 107.9oz 52ft/s 176ft/s 5.4G 536ft 6.2s 5s
OK AeroTech H130 105.4oz 63ft/s 172ft/s 7.8G 550ft 6.1s 4s
OK AeroTech H669 105.9oz 112ft/s 230ft/s 36.6G 622ft 6.0s 6s
OK Loki H125 109.1oz 52ft/s 184ft/s 5.8G 638ft 6.7s 5s
OK Loki H144 108.9oz 59ft/s 194ft/s 7.2G 646ft 6.6s 5s
OK AeroTech H219 106.2oz 64ft/s 217ft/s 8.9G 661ft 6.5s 5s
OK AeroTech H242 106.3oz 59ft/s 216ft/s 7.0G 693ft 6.8s 5s
OK Loki H160 108.8oz 65ft/s 213ft/s 8.5G 720ft 6.8s 5s
OK Cesaroni H400 107.0oz 81ft/s 254ft/s 13.8G 753ft 6.7s 6s
OK Cesaroni H152 107.5oz 50ft/s 229ft/s 6.1G 812ft 7.5s 6s
OK AeroTech H178 108.4oz 49ft/s 243ft/s 6.1G 836ft 7.5s 6s
OK Cesaroni H225 103.8oz 61ft/s 257ft/s 7.9G 840ft 7.2s 6s
OK AeroTech H170 108.6oz 52ft/s 259ft/s 5.7G 972ft 8.0s 6s
OK AeroTech I218 110.1oz 65ft/s 272ft/s 8.3G 973ft 7.8s 6s
OK AeroTech H550 108.4oz 102ft/s 312ft/s 20.5G 990ft 7.4s 7s
OK AeroTech H550 108.1oz 102ft/s 314ft/s 20.6G 994ft 7.4s 7s
warningsW Cesaroni H565 109.8oz 99ft/s 318ft/s 19.6G 1,005ft 7.5s 7s
OK AeroTech I180 110.6oz 74ft/s 258ft/s 10.8G 1,008ft 7.9s 6s
OK AeroTech H999 108.7oz 136ft/s 331ft/s 52.2G 1,019ft 7.4s 7s
OK AeroTech I161 109.9oz 54ft/s 259ft/s 6.1G 1,021ft 8.2s 6s
OK Cesaroni I180 110.9oz 50ft/s 279ft/s 5.8G 1,041ft 8.3s 6s
OK AeroTech I140 109.6oz 49ft/s 251ft/s 4.9G 1,043ft 8.5s 6s
OK AeroTech I225 114.1oz 56ft/s 293ft/s 7.6G 1,111ft 8.3s 7s
OK AeroTech I245 109.9oz 80ft/s 299ft/s 12.5G 1,116ft 8.1s 7s
OK AeroTech I357 109.1oz 75ft/s 311ft/s 11.5G 1,124ft 8.1s 7s
OK Cesaroni I212 113.8oz 53ft/s 302ft/s 6.9G 1,128ft 8.4s 7s
OK Cesaroni I566 110.6oz 93ft/s 364ft/s 19.0G 1,198ft 8.1s 7s
OK Cesaroni I195 111.7oz 57ft/s 316ft/s 6.6G 1,267ft 8.9s 7s
OK Cesaroni I345 110.9oz 73ft/s 362ft/s 11.6G 1,301ft 8.6s 7s
OK Cesaroni I170 110.8oz 55ft/s 323ft/s 6.3G 1,311ft 9.1s 7s
OK Cesaroni I175 112.4oz 51ft/s 316ft/s 5.1G 1,316ft 9.2s 7s
OK AeroTech I285 114.4oz 71ft/s 350ft/s 10.8G 1,326ft 8.7s 7s
OK Cesaroni I800 113.1oz 111ft/s 410ft/s 26.7G 1,349ft 8.4s 8s
OK Cesaroni I236 111.1oz 62ft/s 344ft/s 9.1G 1,354ft 8.9s 7s
OK AeroTech I1299 111.9oz 150ft/s 430ft/s 47.6G 1,385ft 8.3s 8s
OK Cesaroni I223 114.4oz 57ft/s 350ft/s 7.0G 1,400ft 9.2s 7s
OK AeroTech I211 113.0oz 65ft/s 335ft/s 9.2G 1,403ft 9.1s 7s
OK AeroTech I305 117.5oz 75ft/s 362ft/s 11.5G 1,410ft 8.9s 7s
OK AeroTech I195 117.2oz 69ft/s 336ft/s 10.1G 1,422ft 9.2s 7s
OK AeroTech I300 112.6oz 77ft/s 368ft/s 13.9G 1,425ft 8.9s 7s
OK Loki I316 116.0oz 85ft/s 386ft/s 14.5G 1,533ft 9.1s 8s
OK Cesaroni I287 118.3oz 64ft/s 398ft/s 9.2G 1,573ft 9.5s 8s
OK Loki I210 116.0oz 74ft/s 364ft/s 12.7G 1,604ft 9.5s 7s
OK Loki I405 116.2oz 103ft/s 422ft/s 23.9G 1,618ft 9.1s 8s
OK Cesaroni I285 114.8oz 69ft/s 410ft/s 10.0G 1,670ft 9.7s 8s
OK Cesaroni I255 115.2oz 65ft/s 406ft/s 8.8G 1,695ft 9.8s 8s
OK Loki I430 116.0oz 83ft/s 456ft/s 15.5G 1,704ft 9.5s 8s
OK Loki I377 116.8oz 92ft/s 428ft/s 19.3G 1,705ft 9.4s 8s
OK AeroTech I327 119.2oz 76ft/s 438ft/s 12.0G 1,746ft 9.7s 8s
OK AeroTech I366 116.6oz 84ft/s 444ft/s 14.1G 1,747ft 9.6s 8s
OK AMW I297 117.8oz 70ft/s 431ft/s 10.4G 1,751ft 9.8s 8s
OK AeroTech I364 120.9oz 74ft/s 435ft/s 11.2G 1,761ft 9.7s 8s
OK Cesaroni I470 114.5oz 90ft/s 478ft/s 16.5G 1,764ft 9.5s 8s
OK Cesaroni I303 114.6oz 71ft/s 435ft/s 12.0G 1,776ft 9.8s 8s
OK Cesaroni I242 116.4oz 61ft/s 417ft/s 7.8G 1,805ft 10.2s 8s
OK AeroTech I280 118.7oz 66ft/s 435ft/s 9.2G 1,808ft 10.0s 8s
OK KBA I550 122.1oz 89ft/s 534ft/s 18.8G 1,851ft 9.5s 8s
OK Cesaroni I125 119.8oz 52ft/s 326ft/s 7.0G 1,858ft 11.1s 7s
OK AeroTech I435 115.3oz 101ft/s 486ft/s 22.6G 1,861ft 9.6s 8s
OK KBA I301 122.6oz 70ft/s 463ft/s 11.0G 1,864ft 9.9s 8s
OK Cesaroni I350 124.6oz 72ft/s 466ft/s 10.6G 1,893ft 10.1s 8s
OK AeroTech I284 116.6oz 83ft/s 461ft/s 13.9G 1,912ft 10.0s 8s
OK AeroTech I500 117.3oz 89ft/s 526ft/s 16.7G 2,001ft 9.9s 9s
warningsW Cesaroni I540 118.1oz 96ft/s 547ft/s 18.2G 2,028ft 9.9s 9s
OK AeroTech I600 118.2oz 110ft/s 545ft/s 23.9G 2,037ft 9.9s 9s
OK KBA J520 122.5oz 89ft/s 533ft/s 19.9G 2,037ft 10.1s 9s
OK AeroTech I350 118.7oz 80ft/s 522ft/s 13.6G 2,068ft 10.2s 9s
OK AeroTech J420 119.9oz 87ft/s 519ft/s 15.7G 2,070ft 10.2s 9s
OK KBA J740 122.5oz 110ft/s 582ft/s 26.1G 2,074ft 9.9s 9s
OK Cesaroni J335 119.1oz 78ft/s 500ft/s 11.4G 2,084ft 10.4s 8s
OK Cesaroni I216 118.2oz 65ft/s 438ft/s 9.3G 2,086ft 10.8s 8s
OK AeroTech J350 120.5oz 100ft/s 522ft/s 23.6G 2,088ft 10.1s 9s
OK AeroTech J340 117.4oz 85ft/s 509ft/s 17.4G 2,101ft 10.2s 8s
OK Cesaroni J285 118.0oz 69ft/s 485ft/s 10.1G 2,106ft 10.6s 8s
OK Cesaroni J270 120.1oz 63ft/s 478ft/s 7.8G 2,114ft 10.7s 8s
OK Cesaroni J357 118.2oz 80ft/s 519ft/s 14.7G 2,119ft 10.4s 9s
OK Cesaroni J316 118.4oz 76ft/s 491ft/s 12.3G 2,122ft 10.5s 8s
OK AeroTech J425 119.3oz 75ft/s 553ft/s 12.3G 2,166ft 10.4s 9s
OK Cesaroni J290 120.3oz 72ft/s 498ft/s 10.7G 2,204ft 10.8s 8s
OK AeroTech J270 119.6oz 68ft/s 499ft/s 9.8G 2,262ft 10.9s 8s
OK AeroTech J500 120.1oz 101ft/s 579ft/s 22.7G 2,269ft 10.4s 9s
OK AeroTech J435 119.0oz 98ft/s 600ft/s 19.8G 2,419ft 10.7s 9s

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
failedA AeroTech G339 rocket doesn't reach a safe altitude (202ft)
failedG AeroTech G67 speed at end of launch guide too slow (32ft/s)
failedG Loki G69 speed at end of launch guide too slow (34ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (30ft/s)
failedG Loki G70 speed at end of launch guide too slow (35ft/s)
failedG Loki G94 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (29ft/s)
failedG Loki G80 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (30ft/s)
failedG Loki G66 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (31ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (24ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (22ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (29ft/s)
failedG Loki H100 speed at end of launch guide too slow (41ft/s)
failedG AeroTech H123 speed at end of launch guide too slow (44ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (40ft/s)
failedG Loki H90 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (44ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (38ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (30ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (44ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (22ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (24ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (45ft/s)
failedG Loki I110 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (41ft/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.)

A The minimum altitude check is used to ensure that the rocket flies high enough to ensure time for a safe recovery. In addition, many barometric altimeters require a minimum altitude to detect lift-off. (The minimum altitude is 10m or 33ft for an A motor and doubles for each impulse class).

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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