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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 91 motors that fit and appear to have enough thrust (623 motors didn't fit, 77 motors failed safety checks). 168 motor had thrust curves available and 344 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:   Shadow XXL 5.5 .375 38mm
Owner: Jim Lane
Body Diameter: 5.54in
Dry Weight: 174.0oz
MMT Diameter: 38.0mm
MMT Length: 34.00in
CD: 0.49

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 H219 183.2oz 48ft/s 115ft/s 4.7G 261ft 4.4s 3s
OK AeroTech H669 182.9oz 84ft/s 129ft/s 20.7G 262ft 4.1s 4s
OK Contrail H248 202.0oz 54ft/s 116ft/s 11.3G 280ft 4.5s 3s
OK Cesaroni H400 184.0oz 61ft/s 141ft/s 7.6G 325ft 4.7s 4s
OK Contrail H277 199.0oz 58ft/s 135ft/s 12.7G 359ft 5.1s 4s
OK Contrail H340 202.8oz 59ft/s 145ft/s 14.9G 385ft 5.2s 4s
OK AeroTech I180 187.6oz 55ft/s 143ft/s 5.9G 462ft 5.9s 4s
OK Contrail I500 202.2oz 85ft/s 169ft/s 17.1G 475ft 5.5s 5s
OK AeroTech H550 185.4oz 76ft/s 178ft/s 11.5G 486ft 5.6s 5s
OK AeroTech H550 185.1oz 76ft/s 179ft/s 11.6G 489ft 5.7s 5s
warningsW Cesaroni H565 186.8oz 74ft/s 181ft/s 11.5G 497ft 5.7s 5s
OK Contrail I221 199.0oz 60ft/s 153ft/s 7.7G 505ft 6.1s 4s
OK AeroTech H999 185.7oz 101ft/s 190ft/s 30.1G 519ft 5.7s 5s
OK AeroTech I245 186.9oz 59ft/s 170ft/s 7.0G 550ft 6.3s 5s
OK AeroTech I357 186.1oz 55ft/s 175ft/s 6.3G 554ft 6.3s 5s
OK Cesaroni I566 187.6oz 72ft/s 209ft/s 11.0G 638ft 6.4s 6s
OK Cesaroni I345 187.9oz 56ft/s 208ft/s 6.5G 692ft 6.9s 6s
OK Contrail I250 199.5oz 58ft/s 192ft/s 9.3G 703ft 7.0s 5s
OK AeroTech I285 191.4oz 55ft/s 203ft/s 6.1G 709ft 7.1s 6s
OK AeroTech I211 190.0oz 48ft/s 194ft/s 5.1G 743ft 7.5s 5s
OK Contrail I747 203.6oz 117ft/s 229ft/s 32.5G 746ft 6.7s 6s
OK AeroTech I195 194.2oz 50ft/s 197ft/s 5.7G 768ft 7.5s 5s
OK Cesaroni I800 190.1oz 86ft/s 239ft/s 16.0G 778ft 7.0s 6s
OK AeroTech I300 189.6oz 57ft/s 215ft/s 7.8G 791ft 7.4s 6s
OK AeroTech I305 194.5oz 56ft/s 215ft/s 6.6G 793ft 7.4s 6s
OK AeroTech I1299 188.9oz 117ft/s 252ft/s 27.8G 825ft 7.0s 7s
OK Loki I316 193.0oz 65ft/s 232ft/s 8.4G 903ft 7.7s 6s
OK Cesaroni I287 195.3oz 49ft/s 236ft/s 5.4G 912ft 8.1s 6s
OK Loki I210 193.0oz 55ft/s 218ft/s 7.2G 927ft 8.1s 6s
OK Cesaroni I285 191.8oz 50ft/s 244ft/s 5.6G 991ft 8.4s 6s
OK Cesaroni I255 192.2oz 50ft/s 241ft/s 4.9G 1,000ft 8.5s 6s
OK Loki I405 193.2oz 78ft/s 257ft/s 13.9G 1,006ft 8.0s 7s
OK Loki I430 193.0oz 62ft/s 273ft/s 8.9G 1,065ft 8.3s 7s
OK Loki I377 193.8oz 71ft/s 262ft/s 11.2G 1,071ft 8.3s 7s
OK AMW I297 194.8oz 53ft/s 260ft/s 5.9G 1,082ft 8.6s 7s
OK AeroTech I327 196.2oz 57ft/s 265ft/s 6.9G 1,094ft 8.6s 7s
OK Cesaroni I303 191.6oz 54ft/s 261ft/s 6.7G 1,101ft 8.7s 7s
OK AeroTech I366 193.6oz 64ft/s 269ft/s 8.0G 1,103ft 8.5s 7s
OK AeroTech I364 197.9oz 56ft/s 266ft/s 6.6G 1,112ft 8.6s 7s
OK AeroTech I280 195.7oz 50ft/s 263ft/s 5.2G 1,122ft 8.9s 7s
OK Cesaroni I470 191.5oz 69ft/s 287ft/s 9.5G 1,139ft 8.5s 7s
OK Cesaroni I350 201.6oz 55ft/s 288ft/s 6.1G 1,239ft 9.1s 7s
OK KBA I301 199.6oz 54ft/s 284ft/s 6.3G 1,245ft 9.1s 7s
OK AeroTech I435 192.3oz 77ft/s 298ft/s 13.1G 1,248ft 8.8s 7s
OK AeroTech I284 193.6oz 62ft/s 285ft/s 8.1G 1,262ft 9.1s 7s
OK KBA I550 199.1oz 71ft/s 322ft/s 11.2G 1,305ft 9.0s 8s
OK AeroTech I500 194.3oz 69ft/s 323ft/s 9.7G 1,396ft 9.3s 8s
OK Loki J396 200.5oz 57ft/s 320ft/s 8.8G 1,423ft 9.6s 8s
OK Cesaroni J285 195.0oz 53ft/s 303ft/s 5.8G 1,427ft 9.8s 8s
OK Cesaroni J335 196.1oz 57ft/s 312ft/s 6.5G 1,429ft 9.7s 8s
warningsW Cesaroni I540 195.1oz 73ft/s 337ft/s 10.6G 1,439ft 9.4s 8s
OK AeroTech I350 195.7oz 60ft/s 325ft/s 8.0G 1,441ft 9.6s 8s
OK Cesaroni J316 195.4oz 57ft/s 308ft/s 7.0G 1,445ft 9.8s 8s
OK AeroTech J420 196.9oz 66ft/s 325ft/s 9.2G 1,452ft 9.6s 8s
OK AeroTech I600 195.2oz 81ft/s 338ft/s 14.1G 1,458ft 9.4s 8s
OK Cesaroni J381 198.3oz 61ft/s 322ft/s 8.2G 1,466ft 9.7s 8s
OK AeroTech J340 194.4oz 64ft/s 319ft/s 10.1G 1,473ft 9.7s 8s
OK Cesaroni J357 195.2oz 59ft/s 324ft/s 8.5G 1,482ft 9.8s 8s
OK AeroTech J350 197.5oz 76ft/s 329ft/s 14.0G 1,492ft 9.6s 8s
OK KBA J740 199.5oz 86ft/s 360ft/s 16.2G 1,514ft 9.5s 9s
OK Cesaroni J290 197.3oz 53ft/s 315ft/s 6.1G 1,528ft 10.2s 8s
OK AeroTech J425 196.3oz 58ft/s 343ft/s 7.3G 1,543ft 10.0s 8s
OK AeroTech J270 196.6oz 52ft/s 317ft/s 5.5G 1,584ft 10.4s 8s
OK Cesaroni J400 198.8oz 61ft/s 343ft/s 7.7G 1,597ft 10.1s 8s
OK AeroTech J520 201.2oz 90ft/s 360ft/s 17.2G 1,669ft 10.0s 9s
OK AeroTech J500 197.1oz 78ft/s 369ft/s 13.4G 1,710ft 10.1s 9s
OK Loki J528 200.3oz 85ft/s 385ft/s 17.3G 1,765ft 10.1s 9s
OK Cesaroni J330 198.8oz 59ft/s 357ft/s 7.3G 1,798ft 10.7s 8s
OK Cesaroni J410 199.9oz 65ft/s 376ft/s 8.2G 1,835ft 10.7s 9s
OK AeroTech J435 196.0oz 74ft/s 385ft/s 11.6G 1,867ft 10.6s 9s
OK Cesaroni J425 198.7oz 69ft/s 382ft/s 11.1G 1,877ft 10.7s 9s
OK AeroTech J575 206.2oz 86ft/s 400ft/s 14.2G 1,884ft 10.4s 9s
OK Loki J320 200.5oz 59ft/s 367ft/s 8.5G 1,913ft 11.1s 8s
OK Loki J712 200.5oz 82ft/s 416ft/s 14.8G 1,933ft 10.6s 9s
OK Cesaroni J354 201.4oz 62ft/s 375ft/s 8.3G 1,952ft 11.1s 9s
OK Cesaroni J520 204.0oz 70ft/s 418ft/s 10.5G 2,043ft 11.0s 9s
OK Cesaroni J580 210.8oz 70ft/s 435ft/s 10.7G 2,138ft 11.2s 10s
OK Loki J650 214.3oz 79ft/s 457ft/s 14.3G 2,269ft 11.4s 10s
OK Cesaroni J394 207.1oz 58ft/s 443ft/s 6.9G 2,386ft 12.1s 10s
OK AeroTech J825 204.9oz 96ft/s 502ft/s 19.6G 2,406ft 11.5s 10s
OK Cesaroni J595 204.5oz 80ft/s 481ft/s 15.0G 2,472ft 11.8s 10s
OK Cesaroni J600 206.0oz 75ft/s 491ft/s 11.6G 2,494ft 11.9s 10s
OK Cesaroni J420 204.8oz 74ft/s 455ft/s 12.8G 2,523ft 12.1s 10s
OK Cesaroni J453 208.0oz 70ft/s 462ft/s 11.6G 2,527ft 12.2s 10s
OK AeroTech J570 205.8oz 93ft/s 476ft/s 19.1G 2,590ft 12.0s 10s
OK Cesaroni J530 208.5oz 80ft/s 513ft/s 12.9G 2,814ft 12.5s 10s
OK AeroTech J510 212.1oz 83ft/s 526ft/s 16.6G 2,957ft 12.7s 10s
OK Loki J1000 214.3oz 104ft/s 601ft/s 22.5G 3,036ft 12.5s 11s
OK Loki J1026 215.3oz 98ft/s 626ft/s 19.0G 3,157ft 12.8s 12s
OK Loki K1127 215.3oz 105ft/s 624ft/s 22.0G 3,198ft 12.8s 11s
OK Loki K627 217.6oz 87ft/s 652ft/s 15.4G 3,819ft 14.1s 12s

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
failedG Contrail G130 speed at end of launch guide too slow (34ft/s)
failedA AeroTech G339 rocket doesn't reach a safe altitude (67ft)
failedG AeroTech G67 speed at end of launch guide too slow (19ft/s)
failedG Loki G69 speed at end of launch guide too slow (20ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (17ft/s)
failedA Contrail G234 rocket doesn't reach a safe altitude (65ft)
failedG Loki G70 speed at end of launch guide too slow (21ft/s)
failedG Loki G94 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (16ft/s)
failedG Loki G80 speed at end of launch guide too slow (24ft/s)
failed5 Cesaroni G46 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG Cesaroni G185 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (20ft/s)
failedG Loki G66 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (17ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (18ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (12ft/s)
failedG Cesaroni G115 speed at end of launch guide too slow (27ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (20ft/s)
failedG Contrail G123 speed at end of launch guide too slow (35ft/s)
failedG Contrail G100 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (5ft/s)
failedA Contrail G300 rocket doesn't reach a safe altitude (50ft)
failedA Contrail H222 rocket doesn't reach a safe altitude (117ft)
failedA Contrail H300 rocket doesn't reach a safe altitude (121ft)
failedA Contrail H303 rocket doesn't reach a safe altitude (138ft)
failedG AeroTech H73 speed at end of launch guide too slow (17ft/s)
failedG Loki H100 speed at end of launch guide too slow (29ft/s)
failedA AeroTech H283 rocket doesn't reach a safe altitude (197ft)
failedG AeroTech H148 speed at end of launch guide too slow (37ft/s)
failedA Contrail H211 rocket doesn't reach a safe altitude (191ft)
failedG AeroTech H130 speed at end of launch guide too slow (44ft/s)
failedA Contrail H246 rocket doesn't reach a safe altitude (220ft)
failedG AeroTech H123 speed at end of launch guide too slow (30ft/s)
failedG Contrail H121 speed at end of launch guide too slow (36ft/s)
failedG AeroTech H100 speed at end of launch guide too slow (28ft/s)
failedG AeroTech H242 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni H123 speed at end of launch guide too slow (29ft/s)
failedG Loki H90 speed at end of launch guide too slow (29ft/s)
failedG Loki H144 speed at end of launch guide too slow (43ft/s)
failedG Loki H125 speed at end of launch guide too slow (37ft/s)
failedG Contrail H141 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H143 speed at end of launch guide too slow (31ft/s)
failedG Loki H160 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni H120 speed at end of launch guide too slow (31ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni H110 speed at end of launch guide too slow (26ft/s)
failedG Cesaroni H225 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni H152 speed at end of launch guide too slow (36ft/s)
failedG AeroTech H178 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni H125 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni H100 speed at end of launch guide too slow (25ft/s)
failedG AeroTech H170 speed at end of launch guide too slow (37ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (18ft/s)
failedG AeroTech I161 speed at end of launch guide too slow (39ft/s)
failedG AeroTech I218 speed at end of launch guide too slow (48ft/s)
failedG AeroTech I140 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni I180 speed at end of launch guide too slow (36ft/s)
failedG Cesaroni I212 speed at end of launch guide too slow (40ft/s)
failedG AeroTech I225 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni I195 speed at end of launch guide too slow (42ft/s)
failedG AeroTech I154 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni I170 speed at end of launch guide too slow (40ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (10ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (12ft/s)
failedG Cesaroni I175 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni I236 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni I223 speed at end of launch guide too slow (42ft/s)
failedG AeroTech I59 speed at end of launch guide too slow (32ft/s)
failedG Loki I110 speed at end of launch guide too slow (33ft/s)
failedG Contrail I155 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni I242 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni I125 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni I216 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni J94 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni J270 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni J150 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.)

5 The 5:1 thrust-to-weight ratio check is a useful rule of thumb, but it does break down for motors with unusual thrust curves. For example, motors with a high initial thrust and a long tail-off may fail this test but still be safe for use.

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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