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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 37 motors that fit and appear to have enough thrust (718 motors didn't fit, 36 motors failed safety checks). 72 motor had thrust curves available and 153 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:   Prochron S1_0811B
Owner: Terry Wilson
Body Diameter: 100.0mm
Dry Weight: 68.000Kg
MMT Diameter: 98.0mm
MMT Length: 1,500.0mm
CD: 0.60
Web Site: http://ascentroadmap.blogspot.com/2008/11/prochron-0811b.html

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 L2500 72.989Kg 18m/s 47m/s 3.0G 155m 6.6s 5s
OK Cesaroni L3150 72.731Kg 21m/s 52m/s 4.1G 179m 6.8s 5s
OK Cesaroni M2505 74.250Kg 18m/s 73m/s 3.1G 378m 10.3s 7s
OK AeroTech M2100 74.918Kg 16m/s 70m/s 3.1G 387m 10.6s 7s
OK AeroTech M2400 74.451Kg 17m/s 73m/s 2.8G 393m 10.6s 7s
OK AeroTech M1845 74.682Kg 15m/s 69m/s 2.4G 409m 11.2s 6s
OK AeroTech M4500 74.622Kg 26m/s 84m/s 6.7G 427m 10.0s 8s
OK Cesaroni M4770 74.503Kg 26m/s 86m/s 7.0G 436m 10.2s 9s
OK AeroTech M2000 76.987Kg 15m/s 79m/s 2.2G 498m 12.4s 8s
OK Cesaroni M6400 75.919Kg 32m/s 103m/s 8.9G 604m 11.7s 10s
OK AeroTech M2500 76.064Kg 18m/s 92m/s 2.9G 609m 13.0s 9s
OK AeroTech N2220 79.997Kg 17m/s 93m/s 2.8G 687m 14.1s 9s
OK Cesaroni M3400 76.108Kg 21m/s 106m/s 4.3G 719m 13.5s 11s
OK AeroTech M6000 76.459Kg 29m/s 113m/s 8.8G 725m 12.9s 11s
OK Cesaroni N2600 79.482Kg 17m/s 103m/s 3.0G 755m 14.6s 10s
OK Gorilla N2717 78.138Kg 18m/s 107m/s 4.6G 804m 14.6s 10s
OK Cesaroni N2200 79.356Kg 16m/s 104m/s 2.5G 851m 15.8s 10s
OK Cesaroni N10000 77.918Kg 41m/s 127m/s 14.5G 857m 13.7s 13s
OK Cesaroni N1100 79.589Kg 16m/s 79m/s 2.5G 895m 18.3s 6s
OK AeroTech N2000 80.283Kg 18m/s 107m/s 2.8G 997m 17.1s 9s
OK Gorilla N1720 83.421Kg 19m/s 105m/s 3.4G 1,067m 17.6s 9s
OK Loki N3800 79.600Kg 24m/s 130m/s 5.6G 1,079m 16.2s 13s
OK Cesaroni N2500 79.668Kg 20m/s 124m/s 3.7G 1,152m 17.7s 12s
OK Cesaroni N2850 79.688Kg 19m/s 132m/s 3.4G 1,195m 17.9s 13s
OK AeroTech N3300 80.054Kg 19m/s 137m/s 4.2G 1,230m 17.9s 14s
OK Cesaroni N3400 81.972Kg 19m/s 141m/s 4.2G 1,280m 18.2s 14s
OK Cesaroni N3180 80.198Kg 20m/s 141m/s 3.9G 1,308m 18.5s 14s
OK Cesaroni N1560 83.858Kg 16m/s 110m/s 2.9G 1,351m 20.9s 10s
OK Cesaroni N5600 79.280Kg 29m/s 154m/s 7.6G 1,352m 17.6s 15s
OK Cesaroni N2501 81.308Kg 19m/s 137m/s 3.4G 1,392m 19.5s 13s
OK Cesaroni N2540 84.280Kg 17m/s 155m/s 2.7G 1,748m 22.3s 15s
OK Cesaroni N2900 82.166Kg 21m/s 164m/s 4.0G 1,881m 22.1s 16s
OK Cesaroni N3800 82.261Kg 23m/s 176m/s 5.1G 1,957m 21.8s 17s
OK Cesaroni N4100 82.748Kg 23m/s 183m/s 5.1G 2,000m 22.1s 18s
OK Cesaroni N3301 84.525Kg 22m/s 181m/s 5.0G 2,172m 23.4s 18s
OK Cesaroni O3400 84.842Kg 23m/s 199m/s 4.9G 2,594m 25.2s 19s
OK Cesaroni N5800 82.826Kg 29m/s 221m/s 7.9G 2,714m 24.7s 21s

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
failed5 AeroTech K680 average thrust fails 5:1 thrust/weight ratio (1:1)
failed5 AeroTech K650 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG Cesaroni K1620 speed at end of launch guide too slow (14m/s)
failed5 AeroTech K458 average thrust fails 5:1 thrust/weight ratio (1:1)
failedA AeroTech K1999 rocket doesn't reach a safe altitude (42m)
failed5 AeroTech L339 average thrust fails 5:1 thrust/weight ratio (0:1)
failedG AeroTech L1300 speed at end of launch guide too slow (11m/s)
failed5 AeroTech L400 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech L952 speed at end of launch guide too slow (7m/s)
failedG Cesaroni L610 speed at end of launch guide too slow (4m/s)
failedG AeroTech L1500 speed at end of launch guide too slow (13m/s)
failedG Cesaroni M1560 speed at end of launch guide too slow (12m/s)
failedG AeroTech M1075 speed at end of launch guide too slow (8m/s)
failedG AeroTech M1305 speed at end of launch guide too slow (12m/s)
failedG AeroTech M1600 speed at end of launch guide too slow (13m/s)
failedG AeroTech M1340 speed at end of launch guide too slow (12m/s)
failedG Cesaroni M520 speed at end of launch guide too slow (5m/s)
failedG Cesaroni M1060 speed at end of launch guide too slow (11m/s)
failed5 Gorilla M1565 average thrust fails 5:1 thrust/weight ratio (2:1)
failedG Cesaroni M1520 speed at end of launch guide too slow (13m/s)
failedG Cesaroni M1290 speed at end of launch guide too slow (11m/s)
failedG AeroTech M1419 speed at end of launch guide too slow (10m/s)
failedG Cesaroni M1790 speed at end of launch guide too slow (13m/s)
failedG AeroTech M1800 speed at end of launch guide too slow (14m/s)
failedG Hypertek M1010 speed at end of launch guide too slow (11m/s)
failedG Hypertek M1000 speed at end of launch guide too slow (11m/s)
failedG AeroTech M750 speed at end of launch guide too slow (8m/s)
failedG Gorilla M1025 speed at end of launch guide too slow (11m/s)
failedG Cesaroni M1800 speed at end of launch guide too slow (14m/s)
failedG Cesaroni M1890 speed at end of launch guide too slow (14m/s)
failedG Cesaroni M1450 speed at end of launch guide too slow (14m/s)
failedG Cesaroni M795 speed at end of launch guide too slow (10m/s)
failedG Cesaroni N1800 speed at end of launch guide too slow (14m/s)
failedG AeroTech M1939 speed at end of launch guide too slow (14m/s)
failedG AeroTech N1000 speed at end of launch guide too slow (12m/s)
failedG Cesaroni N1975 speed at end of launch guide too slow (12m/s)

G These simulations were run with a launch guide length of 6m (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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