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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 137 motors that fit and appear to have enough thrust (654 motors didn't fit, 20 motors failed safety checks). 157 motor had thrust curves available and 324 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:   shape shifter Jr
Owner: geoffrey delaney
Body Diameter: 2.10in
Dry Weight: 5.00lb
MMT Diameter: 38.0mm
MMT Length: 22.00in
CD: 1.00

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 G234 6.20lb 101ft/s 122ft/s 18.7G 266ft 4.2s 4s
OK Loki G80 5.56lb 48ft/s 111ft/s 3.5G 283ft 4.8s 3s
OK Loki G94 5.53lb 53ft/s 120ft/s 4.4G 309ft 4.9s 3s
OK AeroTech G339 5.40lb 95ft/s 140ft/s 14.7G 312ft 4.5s 4s
OK Contrail G123 6.13lb 62ft/s 133ft/s 12.1G 356ft 5.1s 4s
OK Contrail G100 6.13lb 59ft/s 130ft/s 5.7G 367ft 5.2s 4s
OK Cesaroni G185 5.42lb 66ft/s 149ft/s 7.6G 372ft 5.1s 4s
OK Cesaroni G115 5.43lb 51ft/s 149ft/s 4.4G 417ft 5.6s 4s
OK Contrail H300 6.35lb 99ft/s 166ft/s 24.4G 470ft 5.5s 5s
OK Contrail H222 6.15lb 89ft/s 165ft/s 23.8G 472ft 5.6s 5s
OK Contrail H303 6.30lb 107ft/s 179ft/s 26.8G 532ft 5.8s 5s
OK Contrail H211 6.32lb 99ft/s 206ft/s 21.4G 735ft 6.9s 6s
OK Loki H100 5.74lb 53ft/s 193ft/s 4.9G 745ft 7.4s 5s
OK Contrail H121 6.35lb 61ft/s 202ft/s 8.4G 806ft 7.6s 6s
OK Contrail H246 6.32lb 97ft/s 226ft/s 17.9G 838ft 7.3s 6s
warningsW AeroTech H283 5.54lb 87ft/s 237ft/s 12.6G 859ft 7.4s 7s
OK AeroTech H148 5.68lb 65ft/s 226ft/s 6.7G 888ft 7.9s 6s
OK AeroTech H130 5.52lb 77ft/s 223ft/s 9.6G 916ft 7.9s 6s
OK Contrail H141 6.35lb 70ft/s 227ft/s 8.4G 933ft 8.0s 6s
OK AeroTech H100 5.58lb 51ft/s 221ft/s 4.3G 967ft 8.6s 6s
OK AeroTech H123 5.61lb 54ft/s 219ft/s 5.0G 975ft 8.5s 6s
OK Loki H90 5.74lb 53ft/s 215ft/s 4.7G 982ft 8.6s 6s
OK Cesaroni H123 5.65lb 50ft/s 244ft/s 5.0G 1,027ft 8.7s 7s
OK AeroTech H669 5.56lb 138ft/s 279ft/s 43.8G 1,056ft 8.0s 8s
OK Loki H125 5.75lb 64ft/s 239ft/s 7.0G 1,068ft 8.7s 7s
OK Cesaroni H143 5.77lb 53ft/s 253ft/s 5.5G 1,072ft 8.8s 7s
OK Loki H144 5.74lb 74ft/s 249ft/s 8.7G 1,082ft 8.5s 7s
OK AeroTech H219 5.58lb 82ft/s 271ft/s 10.8G 1,119ft 8.5s 7s
OK AeroTech H242 5.58lb 72ft/s 275ft/s 8.6G 1,189ft 8.9s 7s
OK Loki H160 5.74lb 79ft/s 272ft/s 10.3G 1,225ft 9.0s 7s
OK Cesaroni H120 5.65lb 55ft/s 266ft/s 4.9G 1,235ft 9.5s 7s
OK Cesaroni H110 5.72lb 48ft/s 262ft/s 3.9G 1,250ft 9.7s 7s
OK Cesaroni H125 5.65lb 54ft/s 278ft/s 5.2G 1,294ft 9.7s 8s
OK Cesaroni H400 5.63lb 98ft/s 312ft/s 16.9G 1,312ft 9.0s 8s
OK Cesaroni H100 5.72lb 48ft/s 272ft/s 3.6G 1,367ft 10.3s 8s
OK Cesaroni H152 5.66lb 61ft/s 297ft/s 7.4G 1,419ft 9.9s 8s
OK AeroTech H178 5.71lb 60ft/s 311ft/s 7.6G 1,470ft 10.0s 8s
OK Cesaroni H225 5.43lb 75ft/s 327ft/s 9.7G 1,500ft 9.8s 9s
OK AeroTech H170 5.73lb 64ft/s 337ft/s 7.1G 1,738ft 10.8s 9s
OK AeroTech I218 5.82lb 80ft/s 348ft/s 10.1G 1,739ft 10.6s 9s
OK AeroTech I180 5.85lb 89ft/s 336ft/s 12.9G 1,794ft 10.7s 9s
OK AeroTech H550 5.71lb 127ft/s 383ft/s 24.6G 1,802ft 10.3s 10s
OK AeroTech H550 5.70lb 123ft/s 387ft/s 24.8G 1,818ft 10.3s 10s
OK AeroTech I175 5.77lb 74ft/s 342ft/s 8.8G 1,819ft 11.0s 9s
warningsW Cesaroni H565 5.80lb 119ft/s 389ft/s 24.7G 1,832ft 10.4s 10s
OK AeroTech I161 5.81lb 67ft/s 341ft/s 7.5G 1,832ft 11.0s 9s
OK AeroTech H999 5.73lb 166ft/s 401ft/s 62.1G 1,873ft 10.4s 10s
OK AeroTech I140 5.78lb 61ft/s 337ft/s 6.0G 1,875ft 11.3s 9s
OK Cesaroni I180 5.87lb 63ft/s 359ft/s 7.3G 1,876ft 11.2s 9s
OK AeroTech I225 6.07lb 69ft/s 377ft/s 9.5G 2,014ft 11.4s 10s
OK AeroTech I245 5.80lb 96ft/s 386ft/s 15.1G 2,047ft 11.2s 10s
OK Cesaroni I212 6.05lb 67ft/s 387ft/s 8.7G 2,054ft 11.6s 10s
OK AeroTech I357 5.76lb 92ft/s 396ft/s 13.8G 2,072ft 11.2s 10s
OK AeroTech I154 6.08lb 54ft/s 347ft/s 5.2G 2,087ft 12.3s 9s
OK Cesaroni I566 5.85lb 116ft/s 447ft/s 23.7G 2,258ft 11.4s 11s
OK Cesaroni I195 5.92lb 69ft/s 415ft/s 8.0G 2,356ft 12.3s 10s
OK Cesaroni I175 5.96lb 62ft/s 418ft/s 6.4G 2,452ft 12.7s 10s
OK Cesaroni I170 5.86lb 67ft/s 424ft/s 7.7G 2,457ft 12.6s 10s
OK Cesaroni I345 5.87lb 92ft/s 457ft/s 13.9G 2,465ft 12.1s 11s
OK AeroTech I285 6.09lb 88ft/s 447ft/s 13.0G 2,489ft 12.3s 11s
OK Cesaroni I236 5.88lb 77ft/s 448ft/s 10.9G 2,564ft 12.6s 11s
OK Cesaroni I800 6.01lb 138ft/s 499ft/s 33.8G 2,604ft 12.1s 12s
OK Cesaroni I223 6.09lb 71ft/s 455ft/s 8.6G 2,647ft 12.9s 11s
OK AeroTech I211 6.00lb 80ft/s 442ft/s 11.0G 2,649ft 12.8s 10s
OK AeroTech I195 6.26lb 84ft/s 441ft/s 12.0G 2,663ft 12.8s 11s
OK AeroTech I305 6.28lb 89ft/s 463ft/s 13.9G 2,667ft 12.6s 11s
OK AeroTech I1299 5.93lb 184ft/s 520ft/s 57.3G 2,707ft 12.2s 12s
OK AeroTech I300 5.97lb 94ft/s 474ft/s 16.5G 2,724ft 12.7s 11s
OK AeroTech I59 6.07lb 55ft/s 274ft/s 5.3G 2,820ft 15.3s 7s
warningsW Loki I110 6.30lb 57ft/s 411ft/s 8.4G 2,871ft 13.9s 10s
OK Loki I316 6.19lb 106ft/s 497ft/s 17.3G 2,953ft 13.0s 12s
OK Cesaroni I287 6.33lb 78ft/s 511ft/s 11.6G 3,036ft 13.5s 12s
OK Loki I210 6.19lb 92ft/s 482ft/s 15.1G 3,077ft 13.5s 11s
OK Loki I405 6.20lb 130ft/s 539ft/s 28.2G 3,179ft 13.3s 12s
OK Cesaroni I285 6.12lb 82ft/s 537ft/s 12.0G 3,285ft 13.9s 12s
OK Cesaroni I255 6.14lb 82ft/s 535ft/s 10.6G 3,327ft 14.1s 12s
OK Loki I377 6.23lb 115ft/s 553ft/s 22.7G 3,366ft 13.8s 12s
OK Loki I430 6.19lb 103ft/s 577ft/s 18.3G 3,387ft 13.8s 13s
OK AeroTech I327 6.38lb 90ft/s 563ft/s 14.2G 3,447ft 14.1s 12s
OK AMW I297 6.30lb 83ft/s 559ft/s 12.3G 3,456ft 14.1s 12s
OK AeroTech I364 6.49lb 87ft/s 564ft/s 13.8G 3,476ft 14.1s 12s
OK AeroTech I366 6.22lb 102ft/s 574ft/s 16.7G 3,481ft 14.0s 13s
OK Cesaroni I125 6.43lb 64ft/s 463ft/s 8.4G 3,534ft 15.3s 11s
OK Cesaroni I303 6.10lb 89ft/s 569ft/s 14.2G 3,542ft 14.3s 12s
OK Cesaroni I242 6.21lb 75ft/s 557ft/s 9.3G 3,565ft 14.6s 12s
OK Cesaroni I470 6.09lb 107ft/s 606ft/s 19.6G 3,566ft 14.0s 13s
OK AeroTech I280 6.36lb 82ft/s 571ft/s 10.9G 3,583ft 14.5s 13s
OK KBA I301 6.60lb 82ft/s 575ft/s 12.8G 3,701ft 14.7s 13s
OK Cesaroni I350 6.72lb 89ft/s 600ft/s 12.5G 3,759ft 14.7s 13s
OK KBA I550 6.57lb 110ft/s 628ft/s 21.7G 3,767ft 14.4s 13s
OK AeroTech I435 6.14lb 125ft/s 624ft/s 26.7G 3,792ft 14.3s 13s
OK AeroTech I284 6.22lb 99ft/s 608ft/s 16.7G 3,867ft 14.7s 13s
OK Cesaroni J94 6.46lb 51ft/s 457ft/s 4.7G 4,064ft 17.3s 10s
OK AeroTech I500 6.27lb 111ft/s 673ft/s 19.7G 4,142ft 14.9s 14s
OK KBA J520 6.59lb 110ft/s 675ft/s 23.3G 4,176ft 15.0s 14s
OK Loki J396 6.66lb 91ft/s 659ft/s 17.9G 4,180ft 15.2s 14s
OK Cesaroni I216 6.32lb 77ft/s 596ft/s 11.0G 4,184ft 15.6s 13s
warningsW Cesaroni I540 6.32lb 114ft/s 696ft/s 21.8G 4,222ft 15.0s 14s
OK AeroTech I600 6.33lb 130ft/s 695ft/s 28.1G 4,241ft 14.9s 14s
OK Cesaroni J335 6.38lb 92ft/s 659ft/s 13.5G 4,264ft 15.4s 13s
OK AeroTech J420 6.43lb 105ft/s 676ft/s 18.6G 4,267ft 15.2s 14s
OK AeroTech I350 6.36lb 95ft/s 681ft/s 16.6G 4,273ft 15.3s 14s
OK Cesaroni J381 6.52lb 101ft/s 670ft/s 16.4G 4,288ft 15.3s 13s
OK Cesaroni J270 6.44lb 78ft/s 643ft/s 9.7G 4,291ft 15.7s 13s
OK AeroTech J350 6.47lb 121ft/s 677ft/s 27.6G 4,305ft 15.1s 14s
OK Cesaroni J285 6.31lb 86ft/s 647ft/s 12.3G 4,307ft 15.6s 13s
OK KBA J740 6.60lb 137ft/s 717ft/s 32.7G 4,321ft 15.0s 14s
OK Cesaroni J316 6.34lb 90ft/s 651ft/s 14.5G 4,328ft 15.5s 13s
OK AeroTech J340 6.27lb 106ft/s 671ft/s 20.5G 4,329ft 15.3s 13s
OK Cesaroni J357 6.32lb 99ft/s 684ft/s 17.3G 4,381ft 15.4s 14s
OK AeroTech J520 6.67lb 137ft/s 686ft/s 29.3G 4,413ft 15.3s 14s
OK Cesaroni J290 6.45lb 86ft/s 671ft/s 12.7G 4,519ft 15.9s 13s
OK AeroTech J425 6.39lb 93ft/s 720ft/s 15.3G 4,521ft 15.6s 14s
OK Cesaroni J400 6.55lb 98ft/s 711ft/s 15.8G 4,591ft 15.7s 14s
OK Loki J474 6.67lb 138ft/s 695ft/s 39.3G 4,592ft 15.5s 14s
OK AeroTech J270 6.42lb 85ft/s 679ft/s 11.5G 4,663ft 16.1s 14s
OK AeroTech J500 6.44lb 126ft/s 756ft/s 26.6G 4,799ft 15.7s 14s
OK Loki J326 6.69lb 113ft/s 683ft/s 31.7G 4,832ft 16.2s 14s
OK Loki J528 6.64lb 133ft/s 770ft/s 33.6G 4,857ft 15.8s 15s
OK AeroTech J575 7.02lb 133ft/s 788ft/s 27.6G 5,013ft 15.9s 15s
OK Cesaroni J330 6.55lb 98ft/s 741ft/s 14.8G 5,061ft 16.5s 14s
OK Cesaroni J410 6.62lb 102ft/s 771ft/s 16.3G 5,099ft 16.4s 14s
OK Cesaroni J425 6.54lb 110ft/s 782ft/s 22.0G 5,166ft 16.3s 14s
OK AeroTech J435 6.38lb 116ft/s 794ft/s 23.3G 5,170ft 16.3s 15s
OK Loki J712 6.66lb 128ft/s 832ft/s 28.7G 5,231ft 16.2s 15s
OK Cesaroni J354 6.72lb 96ft/s 773ft/s 16.4G 5,352ft 16.8s 14s
OK Cesaroni J520 6.87lb 108ft/s 836ft/s 20.4G 5,446ft 16.7s 15s
OK Cesaroni J580 7.30lb 110ft/s 852ft/s 21.2G 5,594ft 16.9s 15s
OK Cesaroni J150 7.10lb 66ft/s 651ft/s 9.3G 6,119ft 19.3s 13s
OK AeroTech J825 6.93lb 151ft/s 983ft/s 37.2G 6,127ft 17.1s 16s
OK Cesaroni J394 7.07lb 91ft/s 893ft/s 14.1G 6,219ft 17.9s 15s
OK Cesaroni J595 6.91lb 125ft/s 953ft/s 28.6G 6,296ft 17.5s 16s
OK Cesaroni J600 7.00lb 117ft/s 970ft/s 22.5G 6,331ft 17.5s 16s
OK Cesaroni J453 7.13lb 111ft/s 916ft/s 21.9G 6,416ft 17.8s 15s
OK Cesaroni J420 6.93lb 117ft/s 904ft/s 24.5G 6,439ft 17.8s 15s
OK AeroTech J570 6.99lb 147ft/s 935ft/s 36.1G 6,491ft 17.6s 16s
OK Cesaroni J530 7.15lb 121ft/s 1,004ft/s 24.3G 6,947ft 18.2s 16s

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 Contrail G130 rocket doesn't reach a safe altitude (190ft)
failedG AeroTech G67 speed at end of launch guide too slow (41ft/s)
failedG Loki G69 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G61 speed at end of launch guide too slow (39ft/s)
failedG Loki G70 speed at end of launch guide too slow (44ft/s)
failedG Cesaroni G69 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G46 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni G79 speed at end of launch guide too slow (38ft/s)
failedG Loki G66 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G60 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G69 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G58 speed at end of launch guide too slow (31ft/s)
failedG Cesaroni G78 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni G50 speed at end of launch guide too slow (28ft/s)
failedA Contrail G300 rocket doesn't reach a safe altitude (198ft)
failedG AeroTech H73 speed at end of launch guide too slow (37ft/s)
failedG AeroTech H112 speed at end of launch guide too slow (44ft/s)
failedG AeroTech H45 speed at end of launch guide too slow (38ft/s)
failedG AeroTech I49 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni I55 speed at end of launch guide too slow (31ft/s)

G These simulations were run with a launch guide length of 10ft (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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