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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 170 motors that fit and appear to have enough thrust (640 motors didn't fit, 1 motors failed safety checks). 171 motor had thrust curves available and 348 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:   GLR M38
Owner: Tim Ryerse
Body Diameter: 1.62in
Dry Weight: 19.7oz
MMT Diameter: 38.0mm
MMT Length: 36.00in
CD: 0.74

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 G300 38.9oz 178ft/s 292ft/s 74.5G 1,135ft 8.2s 8s
OK Contrail G130 37.9oz 99ft/s 286ft/s 49.8G 1,199ft 8.6s 8s
OK Contrail G234 38.9oz 145ft/s 338ft/s 49.8G 1,486ft 9.3s 9s
OK Loki G69 28.2oz 70ft/s 393ft/s 11.5G 1,949ft 10.8s 9s
OK Contrail G123 37.7oz 91ft/s 396ft/s 33.0G 2,014ft 10.9s 10s
OK AeroTech G61 26.6oz 66ft/s 404ft/s 10.0G 2,050ft 11.1s 9s
OK AeroTech G67 26.8oz 68ft/s 420ft/s 11.3G 2,054ft 11.1s 10s
OK Contrail G100 37.7oz 85ft/s 396ft/s 16.4G 2,089ft 11.1s 10s
OK Loki G70 28.3oz 70ft/s 416ft/s 12.0G 2,132ft 11.3s 10s
OK Loki G80 28.7oz 76ft/s 424ft/s 13.1G 2,139ft 11.1s 10s
OK AeroTech G339 26.1oz 154ft/s 492ft/s 51.4G 2,155ft 10.7s 10s
OK Contrail H300 41.3oz 158ft/s 437ft/s 61.9G 2,223ft 11.2s 11s
OK Loki G94 28.2oz 80ft/s 450ft/s 15.9G 2,248ft 11.3s 10s
OK Contrail H222 38.1oz 139ft/s 453ft/s 63.1G 2,354ft 11.5s 11s
OK Cesaroni G46 26.7oz 55ft/s 421ft/s 10.9G 2,355ft 12.2s 9s
OK Contrail H303 40.5oz 173ft/s 473ft/s 68.5G 2,448ft 11.6s 11s
OK Cesaroni G79 27.7oz 61ft/s 489ft/s 11.4G 2,454ft 11.9s 10s
OK Cesaroni G69 26.7oz 64ft/s 472ft/s 10.7G 2,467ft 12.0s 10s
OK Cesaroni G185 26.4oz 100ft/s 544ft/s 27.7G 2,492ft 11.5s 11s
OK Loki G66 28.5oz 77ft/s 455ft/s 13.7G 2,496ft 12.0s 10s
OK Cesaroni G58 27.2oz 55ft/s 479ft/s 10.8G 2,629ft 12.6s 10s
OK AeroTech G69 26.8oz 66ft/s 504ft/s 10.3G 2,641ft 12.3s 10s
OK Cesaroni G60 27.0oz 65ft/s 501ft/s 10.5G 2,697ft 12.5s 10s
OK Cesaroni G115 26.6oz 85ft/s 563ft/s 16.8G 2,777ft 12.2s 11s
OK Cesaroni G78 26.7oz 67ft/s 536ft/s 16.6G 2,808ft 12.6s 11s
OK Cesaroni G50 27.4oz 50ft/s 496ft/s 8.2G 2,912ft 13.4s 10s
OK Contrail H211 40.9oz 145ft/s 546ft/s 54.5G 3,103ft 13.0s 12s
OK Contrail H246 40.8oz 133ft/s 592ft/s 45.9G 3,393ft 13.4s 13s
OK AeroTech H73 30.6oz 59ft/s 572ft/s 9.4G 3,428ft 14.0s 11s
OK Contrail H121 41.3oz 89ft/s 560ft/s 22.2G 3,491ft 14.0s 12s
OK Loki H100 31.5oz 77ft/s 635ft/s 15.8G 3,641ft 13.8s 12s
OK Contrail H248 47.7oz 139ft/s 601ft/s 51.5G 3,661ft 14.1s 13s
OK Contrail H141 41.3oz 99ft/s 608ft/s 22.1G 3,748ft 14.2s 13s
warningsW AeroTech H283 28.4oz 134ft/s 786ft/s 42.2G 3,768ft 13.3s 13s
OK AeroTech H148 30.6oz 94ft/s 736ft/s 22.1G 3,948ft 14.0s 12s
OK AeroTech H130 28.1oz 114ft/s 743ft/s 32.4G 3,974ft 13.7s 12s
OK AeroTech H669 28.6oz 203ft/s 908ft/s 138.6G 4,086ft 13.5s 13s
OK AeroTech H123 29.4oz 84ft/s 735ft/s 17.3G 4,269ft 14.5s 12s
OK Loki H144 31.6oz 106ft/s 768ft/s 27.4G 4,300ft 14.3s 13s
OK AeroTech H100 28.9oz 75ft/s 753ft/s 15.2G 4,315ft 14.6s 12s
OK Loki H90 31.5oz 83ft/s 701ft/s 15.7G 4,339ft 14.9s 12s
OK AeroTech H219 28.9oz 119ft/s 879ft/s 35.7G 4,343ft 14.1s 13s
OK Loki H125 31.8oz 99ft/s 745ft/s 22.3G 4,360ft 14.7s 13s
OK Cesaroni H123 30.2oz 74ft/s 807ft/s 16.9G 4,366ft 14.6s 13s
OK Cesaroni H143 32.0oz 77ft/s 819ft/s 17.9G 4,385ft 14.7s 13s
OK Contrail H277 44.8oz 159ft/s 705ft/s 59.9G 4,422ft 15.1s 14s
OK Contrail H340 48.5oz 158ft/s 681ft/s 65.5G 4,423ft 15.3s 14s
OK AeroTech H242 29.0oz 111ft/s 890ft/s 28.8G 4,518ft 14.4s 13s
OK Loki H160 31.5oz 118ft/s 825ft/s 32.0G 4,549ft 14.6s 13s
OK Cesaroni H400 29.7oz 139ft/s 1,003ft/s 54.6G 4,605ft 14.2s 14s
OK AeroTech H112 33.1oz 67ft/s 747ft/s 11.2G 4,722ft 15.6s 12s
OK Cesaroni H120 30.1oz 77ft/s 866ft/s 16.9G 4,801ft 15.1s 13s
OK Contrail I500 47.9oz 172ft/s 785ft/s 75.4G 4,828ft 15.5s 15s
OK Cesaroni H110 31.2oz 73ft/s 847ft/s 13.4G 4,893ft 15.4s 13s
OK Cesaroni H125 30.1oz 78ft/s 898ft/s 17.1G 4,903ft 15.2s 13s
OK Cesaroni H225 26.5oz 121ft/s 1,109ft/s 34.0G 4,960ft 14.4s 13s
OK AeroTech H178 31.1oz 91ft/s 982ft/s 24.6G 5,000ft 15.0s 13s
OK Cesaroni H152 30.2oz 94ft/s 938ft/s 24.3G 5,022ft 15.1s 13s
OK Cesaroni H100 31.3oz 74ft/s 872ft/s 12.7G 5,188ft 15.9s 13s
OK AeroTech H550 30.9oz 182ft/s 1,202ft/s 77.7G 5,204ft 14.6s 14s
OK AeroTech H550 31.1oz 180ft/s 1,173ft/s 76.0G 5,275ft 14.8s 14s
warningsW Cesaroni H565 32.5oz 170ft/s 1,177ft/s 75.0G 5,319ft 14.9s 14s
OK AeroTech H999 31.4oz 244ft/s 1,229ft/s 184.0G 5,322ft 14.7s 14s
OK AeroTech I218 32.8oz 112ft/s 1,026ft/s 30.8G 5,367ft 15.4s 14s
OK AeroTech H170 31.4oz 101ft/s 1,024ft/s 22.8G 5,430ft 15.4s 13s
OK AeroTech I180 33.3oz 130ft/s 953ft/s 38.5G 5,435ft 15.5s 14s
OK Contrail I221 44.8oz 127ft/s 814ft/s 37.6G 5,456ft 16.5s 15s
OK AeroTech I161 32.6oz 99ft/s 997ft/s 23.3G 5,583ft 15.7s 13s
OK Cesaroni I180 33.6oz 86ft/s 1,061ft/s 22.1G 5,649ft 15.8s 14s
OK AeroTech I245 32.6oz 134ft/s 1,099ft/s 45.5G 5,700ft 15.4s 14s
OK AeroTech I225 36.9oz 93ft/s 1,053ft/s 27.2G 5,700ft 15.9s 14s
OK AeroTech I357 31.8oz 131ft/s 1,163ft/s 42.2G 5,728ft 15.4s 14s
OK AeroTech I140 32.3oz 89ft/s 988ft/s 19.3G 5,783ft 16.0s 14s
OK Cesaroni I212 36.5oz 92ft/s 1,100ft/s 25.3G 5,844ft 16.1s 14s
OK AeroTech H45 32.6oz 62ft/s 718ft/s 8.5G 5,855ft 17.5s 11s
OK Cesaroni I566 33.3oz 161ft/s 1,332ft/s 69.8G 5,905ft 15.4s 15s
OK AeroTech I175 32.0oz 107ft/s 975ft/s 27.3G 5,931ft 16.5s 15s
OK Contrail I747 49.3oz 241ft/s 1,003ft/s 137.6G 6,110ft 16.9s 16s
OK AeroTech I154 37.1oz 77ft/s 963ft/s 15.5G 6,215ft 17.0s 14s
OK Cesaroni I800 35.8oz 191ft/s 1,431ft/s 98.1G 6,292ft 15.8s 15s
OK Cesaroni I345 33.7oz 136ft/s 1,316ft/s 40.8G 6,295ft 16.0s 15s
OK AeroTech I1299 34.6oz 251ft/s 1,497ft/s 167.3G 6,350ft 15.7s 15s
OK Cesaroni I195 34.4oz 97ft/s 1,167ft/s 24.2G 6,356ft 16.5s 14s
OK AeroTech I285 37.1oz 118ft/s 1,210ft/s 36.5G 6,360ft 16.3s 15s
OK AeroTech I305 40.2oz 115ft/s 1,201ft/s 37.3G 6,386ft 16.3s 15s
OK Contrail I250 45.3oz 123ft/s 962ft/s 44.5G 6,478ft 17.5s 16s
OK Cesaroni I170 33.5oz 96ft/s 1,197ft/s 23.3G 6,507ft 16.6s 14s
OK Cesaroni I236 33.8oz 107ft/s 1,256ft/s 32.1G 6,508ft 16.3s 15s
OK Cesaroni I175 35.2oz 92ft/s 1,165ft/s 19.1G 6,521ft 16.7s 14s
OK AeroTech I211 35.8oz 115ft/s 1,187ft/s 31.5G 6,565ft 16.4s 14s
OK AeroTech I300 35.3oz 136ft/s 1,291ft/s 46.5G 6,587ft 16.3s 15s
OK AeroTech I195 39.9oz 109ft/s 1,130ft/s 32.1G 6,595ft 16.8s 15s
OK Cesaroni I223 37.1oz 98ft/s 1,240ft/s 24.5G 6,618ft 16.6s 15s
OK Loki I316 38.8oz 137ft/s 1,270ft/s 46.5G 6,917ft 16.8s 15s
OK Cesaroni I55 35.1oz 49ft/s 790ft/s 7.7G 6,980ft 19.6s 12s
OK Cesaroni I287 41.1oz 105ft/s 1,325ft/s 30.8G 6,998ft 17.0s 15s
OK Loki I405 38.9oz 176ft/s 1,373ft/s 73.8G 7,067ft 16.7s 16s
OK Loki I210 38.8oz 127ft/s 1,208ft/s 40.1G 7,227ft 17.2s 15s
OK Cesaroni I285 37.6oz 117ft/s 1,409ft/s 33.0G 7,315ft 17.0s 15s
warningsW Loki I110 40.5oz 85ft/s 1,037ft/s 22.5G 7,335ft 18.1s 14s
OK AeroTech I327 41.9oz 124ft/s 1,422ft/s 36.2G 7,382ft 17.1s 15s
OK AeroTech I364 43.6oz 119ft/s 1,396ft/s 35.5G 7,389ft 17.2s 16s
OK Loki I377 39.5oz 167ft/s 1,386ft/s 59.2G 7,400ft 17.1s 16s
OK AeroTech I366 39.3oz 135ft/s 1,472ft/s 44.4G 7,417ft 16.9s 15s
OK Cesaroni I255 37.9oz 109ft/s 1,393ft/s 29.7G 7,440ft 17.2s 15s
OK AMW I297 40.6oz 116ft/s 1,422ft/s 32.2G 7,454ft 17.2s 15s
OK Loki I430 38.8oz 138ft/s 1,517ft/s 48.4G 7,467ft 17.1s 16s
OK Cesaroni I470 37.2oz 146ft/s 1,619ft/s 53.0G 7,486ft 16.8s 16s
OK Cesaroni I303 37.4oz 118ft/s 1,483ft/s 38.9G 7,566ft 17.0s 15s
OK AeroTech I280 41.4oz 108ft/s 1,442ft/s 28.3G 7,640ft 17.4s 15s
OK AeroTech I435 38.0oz 174ft/s 1,600ft/s 70.9G 7,654ft 16.9s 16s
OK Cesaroni I242 39.1oz 107ft/s 1,416ft/s 25.4G 7,740ft 17.5s 15s
OK AeroTech I284 39.3oz 133ft/s 1,513ft/s 44.5G 7,811ft 17.1s 15s
OK Cesaroni I350 47.3oz 112ft/s 1,434ft/s 30.8G 7,895ft 17.9s 16s
OK KBA I550 44.8oz 137ft/s 1,540ft/s 54.1G 7,985ft 17.9s 17s
OK AeroTech I500 40.0oz 149ft/s 1,712ft/s 51.9G 8,051ft 17.2s 16s
OK KBA I301 45.3oz 109ft/s 1,367ft/s 31.7G 8,060ft 18.3s 16s
warningsW Cesaroni I540 40.8oz 154ft/s 1,769ft/s 57.5G 8,101ft 17.2s 16s
OK AeroTech I600 41.0oz 182ft/s 1,737ft/s 71.5G 8,102ft 17.2s 16s
OK AeroTech J340 40.1oz 141ft/s 1,649ft/s 53.1G 8,154ft 17.2s 15s
OK Contrail I155 45.3oz 85ft/s 1,074ft/s 16.7G 8,168ft 19.7s 16s
OK AeroTech J350 43.2oz 165ft/s 1,626ft/s 67.8G 8,217ft 17.5s 16s
OK AeroTech I350 41.4oz 124ft/s 1,693ft/s 43.5G 8,269ft 17.5s 16s
OK Cesaroni I125 42.5oz 94ft/s 1,106ft/s 21.7G 8,279ft 19.0s 14s
OK Cesaroni J381 44.0oz 128ft/s 1,612ft/s 40.6G 8,280ft 17.7s 16s
OK AeroTech J420 42.6oz 136ft/s 1,645ft/s 47.0G 8,323ft 17.7s 16s
OK AeroTech I59 36.9oz 80ft/s 741ft/s 15.5G 8,343ft 20.4s 12s
OK Cesaroni J335 41.8oz 126ft/s 1,609ft/s 35.0G 8,390ft 17.8s 16s
OK KBA J520 45.2oz 141ft/s 1,628ft/s 55.9G 8,396ft 18.1s 17s
OK Loki J396 46.2oz 118ft/s 1,565ft/s 44.1G 8,397ft 18.1s 17s
OK Cesaroni J357 40.9oz 136ft/s 1,683ft/s 44.3G 8,427ft 17.6s 16s
OK AeroTech J520 46.4oz 177ft/s 1,583ft/s 69.3G 8,487ft 18.0s 17s
OK KBA J740 45.3oz 161ft/s 1,748ft/s 80.1G 8,511ft 18.0s 17s
OK Cesaroni J285 40.7oz 115ft/s 1,578ft/s 32.3G 8,546ft 18.0s 16s
OK AeroTech J425 42.0oz 119ft/s 1,802ft/s 39.6G 8,551ft 17.7s 16s
OK Cesaroni J270 42.8oz 103ft/s 1,557ft/s 25.2G 8,557ft 18.2s 16s
OK Cesaroni I216 40.9oz 107ft/s 1,431ft/s 28.8G 8,607ft 18.3s 15s
OK Cesaroni J400 44.5oz 124ft/s 1,694ft/s 39.5G 8,677ft 18.0s 16s
OK AeroTech J575 52.0oz 161ft/s 1,765ft/s 63.7G 8,718ft 17.8s 17s
OK Cesaroni J290 43.0oz 114ft/s 1,596ft/s 32.0G 8,720ft 18.1s 16s
OK AeroTech J500 42.8oz 166ft/s 1,813ft/s 66.0G 8,746ft 17.7s 16s
OK Cesaroni J316 41.1oz 126ft/s 1,568ft/s 37.3G 8,774ft 18.4s 16s
OK Loki J474 46.4oz 183ft/s 1,570ft/s 92.2G 8,784ft 18.2s 17s
OK AeroTech J270 42.4oz 109ft/s 1,609ft/s 29.6G 8,862ft 18.2s 16s
OK Loki J528 46.0oz 177ft/s 1,802ft/s 79.0G 8,914ft 18.1s 17s
OK AeroTech J435 41.7oz 156ft/s 1,897ft/s 58.7G 9,155ft 17.9s 16s
OK Cesaroni J425 44.4oz 140ft/s 1,825ft/s 53.3G 9,188ft 18.1s 16s
OK Cesaroni J410 45.6oz 134ft/s 1,793ft/s 39.6G 9,260ft 18.4s 16s
OK Loki J326 46.7oz 155ft/s 1,517ft/s 74.2G 9,319ft 18.9s 16s
OK Cesaroni J330 44.5oz 128ft/s 1,717ft/s 36.4G 9,353ft 18.6s 16s
OK Loki J712 46.2oz 163ft/s 1,963ft/s 67.5G 9,365ft 18.4s 17s
OK Cesaroni J520 49.7oz 141ft/s 1,893ft/s 47.3G 9,472ft 18.5s 17s
OK Cesaroni J94 43.0oz 68ft/s 1,079ft/s 12.6G 9,492ft 20.8s 14s
OK Cesaroni J354 47.2oz 127ft/s 1,726ft/s 38.8G 9,570ft 18.6s 16s
OK Cesaroni J580 56.5oz 133ft/s 1,851ft/s 47.0G 9,834ft 19.2s 18s
OK AeroTech J825 50.6oz 191ft/s 2,225ft/s 83.0G 10,046ft 18.6s 17s
OK Loki J650 60.0oz 142ft/s 1,827ft/s 59.5G 10,295ft 19.8s 18s
OK Cesaroni J600 51.7oz 152ft/s 2,142ft/s 51.0G 10,308ft 18.8s 17s
OK Cesaroni J595 50.3oz 165ft/s 2,081ft/s 64.3G 10,315ft 18.8s 17s
OK Cesaroni J394 52.8oz 111ft/s 1,936ft/s 30.3G 10,551ft 19.4s 17s
OK AeroTech J570 51.5oz 187ft/s 1,972ft/s 79.8G 10,558ft 19.0s 17s
OK Cesaroni J453 53.7oz 138ft/s 1,937ft/s 47.9G 10,634ft 19.3s 17s
OK Cesaroni J420 50.5oz 148ft/s 1,928ft/s 55.0G 10,833ft 19.5s 17s
OK Cesaroni J530 54.2oz 147ft/s 2,107ft/s 53.0G 11,160ft 19.5s 17s
OK AeroTech J510 57.8oz 155ft/s 2,050ft/s 63.9G 11,393ft 19.7s 17s
OK Cesaroni J150 53.3oz 86ft/s 1,343ft/s 21.0G 11,606ft 21.7s 15s
OK Loki J1000 60.0oz 205ft/s 2,317ft/s 84.9G 11,774ft 20.2s 19s
OK Loki K1127 61.1oz 193ft/s 2,372ft/s 87.0G 11,969ft 20.2s 19s
OK Loki J1026 61.1oz 167ft/s 2,444ft/s 76.4G 12,043ft 20.3s 19s
OK Loki K627 63.3oz 165ft/s 2,371ft/s 55.5G 13,628ft 21.2s 19s

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 AeroTech I49 speed at end of launch guide too slow (46ft/s)

G These simulations were run with a launch guide length of 7ft (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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