Rocket Motor Guide

Enter the name of the rocket. You can optionally select a rocket from the list that may appear as you type.
Enter the diameter of the rocket's body.
Enter the weight of the rocket without the motor.
Enter the diameter of the rocket's motor mount. This sets the largest diameter motor which will fit.
Enter the length of the rocket's motor mount. This sets the longest motor which will fit.
Select the approximate drag of the rocket. Sleeker rockets with a smooth finish will have lower drag.

Custom Rockets Liberty

Custom Rockets - Liberty {Kit} (10045)

MotorWeight
oz
TTW
Average
TTW
Peak
Accel
f/s2
Speed
mph
Rod
Len
feet
Burnout Time
sec
Optimal
Delay
sec
Time to
Apogee
sec
Altitude
feet
Estes A3T3.802:16:1150.9924.2511.91.091.101.9938
Estes A10T3.682:113:1379.0123.071.70.891.101.7936
MPC B3-M3.863:15:1126.2149.378.71.882.003.68137
MPC A3-M3.763:15:1126.2124.808.70.981.101.8834
Quest C64.363:116:1359.7283.352.32.573.205.57385
Estes A84.083:110:1251.4928.342.80.781.301.8841
Apogee C44.104:112:1288.4789.552.32.373.305.47423
Estes C54.244:121:1465.24110.811.62.063.605.46458
Estes B44.174:113:1340.5255.791.81.082.303.18135
Weco C64.245:113:1326.5971.002.01.792.804.39238
Estes C64.315:114:1381.05108.701.81.893.705.39411
Estes B64.145:112:1323.3459.231.90.902.403.10135
Quest A64.045:112:1316.1226.422.10.411.201.4126
Quest A8 Q-Jet3.965:111:1287.2821.872.30.451.001.2519
Aerotech E6RCT5.365:112:1262.76159.532.47.154.5010.651767
Aerotech E7RCT5.216:112:1255.26155.592.45.664.509.161379
FSI A64.076:112:1295.3720.242.10.490.801.0913
Aerotech C6W4.316:112:1295.65127.022.11.693.805.29470
Quest B64.076:115:1391.1667.401.80.782.703.28154
Apogee E65.137:121:1483.38193.881.46.095.0010.091756
Aerotech D7T4.997:111:1240.34158.132.22.884.607.28892
Apogee B73.827:115:1426.2573.871.60.812.803.41183
Aerotech D84.177:116:1419.98192.481.52.514.406.71939
Aerotech E104.929:120:1471.45297.681.64.154.608.551713
QUEST D819.519:130:1146.0930.337.12.241.403.4494
Estes D115.0810:127:1662.72199.301.81.885.006.68842
Apogee C104.1210:126:1721.82134.071.00.974.104.87436
Aerotech D9W5.1610:121:1407.43208.933.01.935.006.73837
Estes D125.0010:131:1764.81200.241.71.685.006.48815
Aerotech C12T4.2711:121:1523.30130.951.41.024.004.82420
Estes C114.7411:122:1542.87122.031.80.894.004.69368
Aerotech E12RCJ5.5912:119:1435.53278.301.43.105.208.101468
Aerotech D13W4.6612:123:1564.23223.561.11.764.806.36872
Aerotech E11J5.7012:120:1414.64274.441.62.835.307.931395
Aerotech D10W4.4113:126:1679.09236.441.11.455.006.25869
Apogee D104.4114:126:1682.87236.031.11.465.006.26866
Aerotech D15T5.0514:129:1639.15221.381.01.455.106.35849
Aerotech F125.8515:124:1522.86339.401.22.985.408.181688
Aerotech E15W5.2715:130:1697.20313.980.92.665.507.961597
Aerotech E18W5.5119:132:1718.20355.080.92.265.607.661517
Aerotech E20W5.2320:136:1815.89346.280.91.815.707.311341
Aerotech D21T4.3821:133:1887.29271.330.80.955.306.05858
Aerotech D24T4.5922:142:1661.70230.511.00.965.205.96761
CTI 24E22-13A5.4923:132:1713.38294.861.01.155.706.651024
Aerotech F245.7023:142:1895.95390.511.12.185.907.881690
Aerotech E25T4.2124:146:11315.67322.560.61.035.306.13970
CTI 26E31-15A5.3330:145:11038.21332.110.80.945.906.641059
Aerotech E30T5.0333:150:11230.22433.920.71.235.906.931396
Aerotech E28T5.4233:152:11141.16411.260.71.246.107.141412
Estes E30T5.0134:151:11270.10381.080.71.035.906.731216
Aerotech F395.6238:161:11342.57471.540.61.336.307.431628
Aerotech F44W5.1944:167:11585.89527.090.91.086.106.981417
Aerotech E504.8554:157:11345.22528.510.70.856.106.751364
CTI 25E75-17A5.3376:198:12275.32292.150.50.425.806.02857

Weight - The total weight of the rocket, with motor, at lift-off.

TTW Average - The average thrust-to-weight ratio of the rocket.

TTW Peak - The peak thrust-to-weight ratio of the rocket.

Accel - The maximum acceleration experienced by the rocket.

Speed - The maximum speed experienced by the rocket.

Rod Len - The minimal rod/rail length for the rocket to reach a safe speed (9 m/s) for free flight.

Optimal Delay - The optimal delay time (equal to the time from burnout to apogee).

Altitude - The altitude at apogee.

Note: These simulation results should be used with caution. Always double-check to ensure that your flight will be safe.

The Rocket Motor Guide helps you choose the right motor to use in your rocket by running a simulation using each of the motors in the RocketReviews.com motor database.