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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 72 motors that fit and appear to have enough thrust (686 motors didn't fit, 44 motors failed safety checks). 114 motor had thrust curves available and 230 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:   BT V2
Owner: KenRico
Body Diameter: 4.00in
Dry Weight: 3.10lb
MMT Diameter: 29.0mm
MMT Length: 20.00in
CD: 0.62

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 F67 3.28lb 50ft/s 109ft/s 4.9G 213ft 4.0s 3s
OK Cesaroni G88 3.44lb 51ft/s 145ft/s 6.6G 343ft 4.9s 4s
OK AeroTech G104 3.40lb 58ft/s 149ft/s 7.0G 363ft 5.0s 4s
OK AeroTech G74 3.29lb 49ft/s 149ft/s 5.2G 365ft 5.2s 4s
OK Cesaroni G80 3.42lb 48ft/s 161ft/s 5.5G 414ft 5.4s 4s
OK AeroTech G77 3.37lb 49ft/s 174ft/s 5.6G 477ft 5.8s 5s
OK AeroTech G79 3.45lb 51ft/s 176ft/s 5.5G 503ft 6.0s 5s
OK Cesaroni G83 3.42lb 52ft/s 178ft/s 5.6G 507ft 5.9s 5s
OK Cesaroni G250 3.41lb 89ft/s 217ft/s 18.0G 564ft 5.8s 5s
OK AeroTech G76 3.42lb 62ft/s 179ft/s 8.9G 575ft 6.2s 4s
OK AeroTech G64 3.43lb 54ft/s 175ft/s 6.1G 587ft 6.4s 4s
OK Cesaroni G126 3.42lb 66ft/s 210ft/s 9.4G 593ft 6.1s 5s
OK AeroTech G75 3.39lb 51ft/s 191ft/s 5.7G 607ft 6.5s 4s
OK AeroTech G78 3.38lb 51ft/s 201ft/s 5.8G 630ft 6.5s 5s
OK Cesaroni G131 3.54lb 62ft/s 220ft/s 8.5G 641ft 6.4s 5s
OK AeroTech G125 3.38lb 64ft/s 230ft/s 9.1G 673ft 6.5s 5s
OK AeroTech G80 3.38lb 54ft/s 210ft/s 5.9G 684ft 6.7s 5s
OK Cesaroni G106 3.51lb 53ft/s 234ft/s 7.4G 727ft 6.9s 6s
OK KBA G135 3.60lb 61ft/s 251ft/s 8.8G 767ft 6.9s 6s
OK Cesaroni G54 3.53lb 54ft/s 205ft/s 6.7G 878ft 7.9s 5s
OK Cesaroni G118 3.51lb 60ft/s 269ft/s 9.0G 895ft 7.5s 6s
OK Cesaroni G125 3.53lb 65ft/s 272ft/s 9.3G 897ft 7.4s 6s
OK AeroTech H165 3.54lb 72ft/s 285ft/s 11.1G 909ft 7.3s 6s
OK Cesaroni H54 3.56lb 48ft/s 212ft/s 5.4G 922ft 8.2s 5s
OK Cesaroni H133 3.52lb 67ft/s 279ft/s 11.2G 929ft 7.5s 6s
OK Cesaroni H175 3.64lb 72ft/s 294ft/s 13.1G 932ft 7.4s 6s
OK Cesaroni H90 3.46lb 58ft/s 263ft/s 9.1G 944ft 7.7s 6s
OK Cesaroni H87 3.55lb 53ft/s 260ft/s 7.1G 945ft 7.9s 6s
OK RATT H70 3.88lb 57ft/s 234ft/s 6.9G 946ft 7.9s 5s
OK Cesaroni H163 3.51lb 74ft/s 297ft/s 12.9G 961ft 7.5s 6s
OK Cesaroni H410 3.50lb 118ft/s 329ft/s 32.4G 972ft 7.2s 7s
OK AeroTech G138 3.43lb 62ft/s 305ft/s 10.7G 975ft 7.6s 6s
OK AeroTech H128 3.55lb 70ft/s 294ft/s 10.5G 984ft 7.6s 6s
OK Cesaroni H123 3.60lb 59ft/s 292ft/s 7.7G 999ft 7.8s 6s
OK AeroTech H238 3.53lb 82ft/s 312ft/s 14.1G 1,006ft 7.5s 7s
OK AeroTech H115 3.55lb 59ft/s 291ft/s 6.8G 1,024ft 7.9s 6s
OK AeroTech H97 3.71lb 52ft/s 282ft/s 5.7G 1,050ft 8.2s 6s
OK Cesaroni H118 3.61lb 65ft/s 299ft/s 9.6G 1,079ft 8.0s 6s
OK Cesaroni H237 3.75lb 84ft/s 364ft/s 16.0G 1,191ft 8.1s 7s
OK AeroTech H220 3.65lb 88ft/s 363ft/s 17.9G 1,207ft 8.1s 7s
OK Cesaroni H151 3.62lb 73ft/s 342ft/s 11.6G 1,219ft 8.3s 7s
OK KBA H130 4.66lb 62ft/s 303ft/s 9.6G 1,225ft 8.6s 7s
OK AeroTech H210 3.64lb 83ft/s 368ft/s 14.9G 1,230ft 8.2s 7s
OK Cesaroni H135 3.65lb 66ft/s 347ft/s 9.2G 1,280ft 8.6s 7s
OK Cesaroni H160 3.70lb 70ft/s 364ft/s 10.3G 1,286ft 8.5s 7s
OK Cesaroni H170 3.61lb 77ft/s 364ft/s 13.8G 1,286ft 8.4s 7s
OK AeroTech H182 3.56lb 73ft/s 379ft/s 11.0G 1,295ft 8.4s 7s
OK AeroTech H180 3.66lb 80ft/s 383ft/s 14.7G 1,339ft 8.5s 7s
OK AeroTech H250 3.66lb 97ft/s 406ft/s 18.8G 1,363ft 8.4s 7s
OK AeroTech H135 3.57lb 65ft/s 351ft/s 8.7G 1,377ft 8.9s 7s
OK KBA H225 3.80lb 76ft/s 411ft/s 14.8G 1,405ft 8.7s 8s
OK AeroTech H195 3.53lb 88ft/s 414ft/s 15.2G 1,428ft 8.6s 7s
OK Cesaroni H295 3.85lb 96ft/s 436ft/s 19.6G 1,451ft 8.6s 8s
OK Cesaroni H180 3.79lb 80ft/s 409ft/s 15.0G 1,504ft 8.9s 7s
OK Cesaroni H194 3.73lb 80ft/s 417ft/s 16.0G 1,508ft 8.9s 8s
OK Cesaroni H200 3.70lb 83ft/s 424ft/s 16.6G 1,539ft 8.9s 8s
OK Cesaroni H140 3.71lb 77ft/s 399ft/s 13.9G 1,595ft 9.3s 7s
OK Cesaroni H255 3.61lb 96ft/s 468ft/s 22.4G 1,609ft 8.9s 8s
OK Cesaroni H340 3.96lb 107ft/s 484ft/s 24.2G 1,620ft 8.9s 8s
OK Cesaroni H399 3.75lb 121ft/s 503ft/s 31.7G 1,633ft 8.9s 8s
OK Cesaroni H159 3.86lb 70ft/s 442ft/s 9.9G 1,740ft 9.6s 8s
OK Cesaroni H226 3.89lb 93ft/s 472ft/s 19.2G 1,749ft 9.3s 8s
OK AeroTech H268 3.89lb 95ft/s 495ft/s 18.0G 1,762ft 9.3s 8s
OK Cesaroni H233 3.82lb 91ft/s 491ft/s 19.0G 1,795ft 9.4s 8s
OK Cesaroni H255 3.80lb 100ft/s 511ft/s 23.4G 1,822ft 9.4s 8s
OK Cesaroni H160 3.80lb 89ft/s 446ft/s 17.7G 1,828ft 9.6s 7s
OK AeroTech I200 3.89lb 88ft/s 480ft/s 16.5G 1,864ft 9.6s 8s
OK Cesaroni I204 3.87lb 94ft/s 509ft/s 19.8G 1,975ft 9.8s 8s
OK AeroTech I205 3.79lb 82ft/s 517ft/s 20.6G 1,985ft 9.8s 8s
OK Cesaroni I224 3.92lb 99ft/s 550ft/s 23.9G 2,126ft 10.0s 8s
OK Cesaroni I243 3.98lb 95ft/s 552ft/s 23.6G 2,130ft 10.0s 8s
warningsW,D Estes G80 3.38lb 5:1 thrust/weight ratio (no data)

W Motor total weight unknown, lift-off Weight not accurate.

D No simulation data found for this motor.

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 Estes E16 speed at end of launch guide too slow (13ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (26ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (18ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (30ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (27ft/s)
failedG Estes F15 speed at end of launch guide too slow (7ft/s)
failedG AeroTech F37 speed at end of launch guide too slow (32ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (41ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (31ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (30ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (26ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (25ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (27ft/s)
failedA Cesaroni F120 rocket doesn't reach a safe altitude (179ft)
failedG Cesaroni F59 speed at end of launch guide too slow (42ft/s)
failed5 Estes F26 average thrust fails 5:1 thrust/weight ratio (2:1)
failedG AeroTech F26 speed at end of launch guide too slow (26ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (23ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (45ft/s)
failedG Apogee F10 speed at end of launch guide too slow (12ft/s)
failedG AeroTech F50 speed at end of launch guide too slow (44ft/s)
failedG Estes F50 speed at end of launch guide too slow (46ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (36ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (45ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (33ft/s)
failedG AeroTech G53 speed at end of launch guide too slow (47ft/s)
failedG Estes G40 speed at end of launch guide too slow (42ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (47ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (44ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (42ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (29ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (43ft/s)
failed5 AeroTech G8 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech G11 speed at end of launch guide too slow (13ft/s)
failedG AeroTech G12 speed at end of launch guide too slow (15ft/s)
failedG KBA G82 speed at end of launch guide too slow (46ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (44ft/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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