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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 69 motors that fit and appear to have enough thrust (672 motors didn't fit, 50 motors failed safety checks). 119 motor had thrust curves available and 251 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: 0.60

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
warningsW AeroTech H283 105.7oz 62ft/s 191ft/s 10.4G 509ft 5.7s 5s
OK AeroTech H130 105.4oz 53ft/s 171ft/s 7.8G 539ft 6.0s 4s
OK AeroTech H669 105.9oz 97ft/s 230ft/s 36.6G 608ft 5.9s 6s
OK Loki H144 108.9oz 52ft/s 193ft/s 7.2G 632ft 6.5s 5s
OK AeroTech H219 106.2oz 56ft/s 216ft/s 8.9G 645ft 6.4s 5s
OK AeroTech H242 106.3oz 51ft/s 215ft/s 7.0G 677ft 6.7s 5s
OK Loki H160 108.8oz 57ft/s 212ft/s 8.5G 704ft 6.7s 5s
OK Cesaroni H400 107.0oz 70ft/s 253ft/s 13.8G 734ft 6.6s 6s
OK Cesaroni H225 103.8oz 54ft/s 256ft/s 7.9G 816ft 7.1s 6s
OK AeroTech I218 110.1oz 56ft/s 270ft/s 8.3G 945ft 7.6s 6s
OK AeroTech H550 108.4oz 87ft/s 311ft/s 20.5G 958ft 7.3s 7s
OK AeroTech H550 108.1oz 87ft/s 313ft/s 20.6G 961ft 7.3s 7s
warningsW Cesaroni H565 109.8oz 85ft/s 317ft/s 19.5G 972ft 7.4s 7s
OK AeroTech I180 110.6oz 64ft/s 255ft/s 10.8G 978ft 7.7s 6s
OK AeroTech H999 108.7oz 117ft/s 330ft/s 52.2G 985ft 7.3s 7s
OK AeroTech I245 109.9oz 68ft/s 296ft/s 12.5G 1,080ft 7.9s 6s
OK AeroTech I357 109.1oz 65ft/s 309ft/s 11.5G 1,087ft 7.9s 7s
OK Cesaroni I566 110.6oz 82ft/s 363ft/s 18.9G 1,154ft 7.9s 7s
OK Cesaroni I195 111.7oz 49ft/s 313ft/s 6.6G 1,225ft 8.7s 7s
OK Cesaroni I345 110.9oz 63ft/s 360ft/s 11.6G 1,253ft 8.4s 7s
OK AeroTech I285 114.4oz 62ft/s 348ft/s 10.8G 1,278ft 8.5s 7s
OK Cesaroni I800 113.1oz 95ft/s 409ft/s 26.5G 1,296ft 8.2s 8s
OK Cesaroni I236 111.1oz 54ft/s 340ft/s 9.1G 1,305ft 8.7s 7s
OK AeroTech I1299 111.9oz 130ft/s 429ft/s 47.5G 1,329ft 8.1s 8s
OK Cesaroni I223 114.4oz 48ft/s 347ft/s 7.0G 1,350ft 9.0s 7s
OK AeroTech I211 113.0oz 56ft/s 332ft/s 9.2G 1,353ft 8.9s 7s
OK AeroTech I305 117.5oz 64ft/s 359ft/s 11.5G 1,358ft 8.7s 7s
OK AeroTech I300 112.6oz 68ft/s 365ft/s 13.9G 1,372ft 8.7s 7s
OK AeroTech I195 117.2oz 59ft/s 332ft/s 10.1G 1,372ft 9.0s 7s
OK Loki I316 116.0oz 75ft/s 382ft/s 14.5G 1,474ft 8.9s 7s
OK Cesaroni I287 118.3oz 55ft/s 394ft/s 9.2G 1,512ft 9.2s 7s
OK Loki I210 116.0oz 64ft/s 359ft/s 12.7G 1,543ft 9.3s 7s
OK Loki I405 116.2oz 90ft/s 419ft/s 23.9G 1,552ft 8.9s 8s
OK Cesaroni I285 114.8oz 60ft/s 406ft/s 10.0G 1,603ft 9.5s 8s
OK Cesaroni I255 115.2oz 57ft/s 401ft/s 8.8G 1,628ft 9.6s 8s
OK Loki I430 116.0oz 74ft/s 453ft/s 15.5G 1,633ft 9.2s 8s
OK Loki I377 116.8oz 81ft/s 423ft/s 19.3G 1,635ft 9.2s 8s
OK AeroTech I366 116.6oz 73ft/s 439ft/s 14.1G 1,674ft 9.4s 8s
OK AeroTech I327 119.2oz 66ft/s 433ft/s 12.0G 1,674ft 9.5s 8s
OK AMW I297 117.8oz 61ft/s 426ft/s 10.4G 1,680ft 9.5s 8s
OK Cesaroni I470 114.5oz 75ft/s 475ft/s 16.5G 1,687ft 9.2s 8s
OK AeroTech I364 120.9oz 64ft/s 431ft/s 11.2G 1,688ft 9.5s 8s
OK Cesaroni I303 114.6oz 61ft/s 430ft/s 12.0G 1,702ft 9.6s 8s
OK Cesaroni I242 116.4oz 54ft/s 412ft/s 7.8G 1,733ft 9.9s 8s
OK AeroTech I280 118.7oz 58ft/s 430ft/s 9.2G 1,733ft 9.8s 8s
OK KBA I550 122.1oz 79ft/s 530ft/s 18.7G 1,765ft 9.2s 8s
OK AeroTech I435 115.3oz 89ft/s 481ft/s 22.6G 1,779ft 9.4s 8s
OK KBA I301 122.6oz 57ft/s 457ft/s 11.0G 1,783ft 9.7s 8s
OK Cesaroni I350 124.6oz 63ft/s 461ft/s 10.6G 1,813ft 9.8s 8s
OK AeroTech I284 116.6oz 71ft/s 455ft/s 13.9G 1,830ft 9.7s 8s
OK AeroTech I500 117.3oz 78ft/s 521ft/s 16.7G 1,910ft 9.7s 8s
warningsW Cesaroni I540 118.1oz 85ft/s 542ft/s 18.2G 1,934ft 9.7s 9s
OK AeroTech I600 118.2oz 96ft/s 540ft/s 23.9G 1,942ft 9.6s 8s
OK AeroTech I350 118.7oz 68ft/s 516ft/s 13.6G 1,974ft 10.0s 8s
OK AeroTech J420 119.9oz 75ft/s 513ft/s 15.7G 1,976ft 9.9s 8s
OK KBA J740 122.5oz 97ft/s 578ft/s 26.0G 1,976ft 9.6s 9s
OK Cesaroni J335 119.1oz 67ft/s 494ft/s 11.4G 1,992ft 10.1s 8s
OK AeroTech J350 120.5oz 88ft/s 516ft/s 23.6G 1,993ft 9.8s 8s
OK Cesaroni I216 118.2oz 54ft/s 431ft/s 9.3G 1,999ft 10.5s 7s
OK AeroTech J340 117.4oz 73ft/s 503ft/s 17.4G 2,006ft 10.0s 8s
OK Cesaroni J285 118.0oz 60ft/s 478ft/s 10.0G 2,014ft 10.3s 8s
OK Cesaroni J270 120.1oz 53ft/s 471ft/s 7.8G 2,023ft 10.5s 8s
OK Cesaroni J357 118.2oz 68ft/s 512ft/s 14.7G 2,023ft 10.1s 8s
OK Cesaroni J316 118.4oz 65ft/s 485ft/s 12.3G 2,028ft 10.2s 8s
OK AeroTech J425 119.3oz 64ft/s 547ft/s 12.3G 2,066ft 10.1s 9s
OK Cesaroni J290 120.3oz 63ft/s 490ft/s 10.7G 2,106ft 10.5s 8s
OK AeroTech J500 120.1oz 88ft/s 572ft/s 22.7G 2,161ft 10.0s 9s
OK AeroTech J270 119.6oz 60ft/s 492ft/s 9.8G 2,161ft 10.6s 8s
OK AeroTech J435 119.0oz 81ft/s 592ft/s 19.8G 2,302ft 10.4s 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 (200ft)
failedG AeroTech G67 speed at end of launch guide too slow (28ft/s)
failedG Loki G69 speed at end of launch guide too slow (29ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (26ft/s)
failedG Loki G70 speed at end of launch guide too slow (31ft/s)
failedG Loki G94 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (25ft/s)
failedG Loki G80 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (20ft/s)
failedG Cesaroni G185 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (26ft/s)
failedG Loki G66 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (27ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (21ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (18ft/s)
failedG AeroTech H73 speed at end of launch guide too slow (25ft/s)
failedG Loki H100 speed at end of launch guide too slow (36ft/s)
failedG AeroTech H148 speed at end of launch guide too slow (45ft/s)
failedG AeroTech H123 speed at end of launch guide too slow (38ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (35ft/s)
failedG Loki H90 speed at end of launch guide too slow (37ft/s)
failedG Loki H125 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (38ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni H152 speed at end of launch guide too slow (43ft/s)
failedG AeroTech H178 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (33ft/s)
failedG AeroTech H170 speed at end of launch guide too slow (45ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (26ft/s)
failedG AeroTech I161 speed at end of launch guide too slow (47ft/s)
failedG AeroTech I140 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni I180 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni I212 speed at end of launch guide too slow (46ft/s)
failedG AeroTech I225 speed at end of launch guide too slow (48ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni I170 speed at end of launch guide too slow (47ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (19ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (21ft/s)
failedG Cesaroni I175 speed at end of launch guide too slow (44ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (38ft/s)
failedG Loki I110 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni I125 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (35ft/s)

G These simulations were run with a launch guide length of 6ft (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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