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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 55 motors that fit and appear to have enough thrust (679 motors didn't fit, 57 motors failed safety checks). 110 motor had thrust curves available and 217 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:   Der Redskins Max
Owner: Phill Ash
Body Diameter: 4.00in
Dry Weight: 1,582g
MMT Diameter: 29.0mm
MMT Length: 37.0cm
CD: 0.80

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 G104 1,718g 48ft/s 131ft/s 6.2G 291ft 4.5s 4s
OK Cesaroni G250 1,723g 72ft/s 193ft/s 16.0G 460ft 5.3s 5s
OK AeroTech G76 1,729g 51ft/s 156ft/s 7.9G 466ft 5.7s 4s
OK Cesaroni G126 1,727g 54ft/s 185ft/s 8.4G 482ft 5.6s 5s
OK Cesaroni G131 1,782g 51ft/s 195ft/s 7.5G 523ft 5.8s 5s
OK AeroTech G125 1,707g 52ft/s 203ft/s 8.0G 548ft 5.9s 5s
OK Cesaroni G118 1,770g 49ft/s 238ft/s 8.0G 735ft 6.9s 5s
OK Cesaroni G125 1,776g 53ft/s 241ft/s 8.3G 738ft 6.8s 6s
OK AeroTech H165 1,784g 59ft/s 253ft/s 9.9G 749ft 6.7s 6s
OK Cesaroni H133 1,772g 54ft/s 247ft/s 10.0G 765ft 6.9s 6s
OK Cesaroni H175 1,829g 59ft/s 262ft/s 11.6G 771ft 6.8s 6s
OK Cesaroni H90 1,745g 48ft/s 231ft/s 8.1G 775ft 7.1s 5s
OK Cesaroni H163 1,769g 60ft/s 264ft/s 11.5G 793ft 6.9s 6s
OK AeroTech G138 1,730g 50ft/s 269ft/s 9.5G 802ft 7.0s 6s
OK Cesaroni H410 1,764g 95ft/s 294ft/s 29.0G 805ft 6.6s 6s
OK AeroTech H128 1,788g 57ft/s 260ft/s 9.4G 813ft 7.0s 6s
OK Cesaroni H123 1,810g 48ft/s 258ft/s 6.8G 825ft 7.2s 6s
OK AeroTech H238 1,778g 66ft/s 277ft/s 12.6G 833ft 6.9s 6s
OK AeroTech H115 1,787g 48ft/s 256ft/s 6.0G 845ft 7.3s 6s
OK Cesaroni H118 1,814g 52ft/s 264ft/s 8.5G 893ft 7.4s 6s
OK Cesaroni H237 1,876g 68ft/s 325ft/s 14.2G 993ft 7.4s 6s
OK AeroTech H220 1,832g 71ft/s 324ft/s 16.1G 1,005ft 7.4s 6s
OK Cesaroni H151 1,820g 59ft/s 304ft/s 10.4G 1,014ft 7.6s 6s
OK AeroTech H210 1,828g 67ft/s 327ft/s 13.3G 1,024ft 7.5s 7s
OK KBA H130 2,291g 52ft/s 274ft/s 8.8G 1,034ft 8.0s 6s
OK Cesaroni H135 1,833g 54ft/s 307ft/s 8.2G 1,065ft 7.9s 6s
OK Cesaroni H160 1,854g 57ft/s 324ft/s 9.2G 1,072ft 7.9s 6s
OK Cesaroni H170 1,814g 66ft/s 323ft/s 12.3G 1,072ft 7.7s 6s
OK AeroTech H182 1,789g 59ft/s 336ft/s 9.8G 1,078ft 7.8s 7s
OK AeroTech H180 1,834g 65ft/s 341ft/s 13.2G 1,118ft 7.8s 7s
OK AeroTech H250 1,838g 82ft/s 362ft/s 16.9G 1,139ft 7.8s 7s
OK AeroTech H135 1,794g 53ft/s 310ft/s 7.7G 1,146ft 8.2s 6s
OK KBA H225 1,898g 61ft/s 367ft/s 13.3G 1,175ft 8.0s 7s
OK AeroTech H195 1,779g 70ft/s 367ft/s 13.6G 1,193ft 8.0s 7s
OK Cesaroni H295 1,924g 77ft/s 391ft/s 17.6G 1,217ft 8.0s 7s
OK Cesaroni H180 1,896g 68ft/s 365ft/s 13.5G 1,261ft 8.2s 7s
OK Cesaroni H194 1,866g 68ft/s 372ft/s 14.4G 1,264ft 8.2s 7s
OK Cesaroni H200 1,856g 70ft/s 378ft/s 14.9G 1,290ft 8.3s 7s
OK Cesaroni H140 1,859g 63ft/s 354ft/s 12.5G 1,337ft 8.6s 7s
OK Cesaroni H255 1,814g 79ft/s 417ft/s 20.1G 1,350ft 8.2s 7s
OK Cesaroni H340 1,973g 86ft/s 435ft/s 21.9G 1,364ft 8.2s 7s
OK Cesaroni H399 1,876g 98ft/s 451ft/s 28.7G 1,372ft 8.2s 7s
OK Cesaroni H159 1,925g 57ft/s 392ft/s 8.9G 1,463ft 9.0s 7s
OK Cesaroni H226 1,942g 75ft/s 422ft/s 17.4G 1,474ft 8.6s 7s
OK AeroTech H268 1,940g 76ft/s 443ft/s 16.3G 1,484ft 8.6s 7s
OK Cesaroni H233 1,910g 75ft/s 438ft/s 17.2G 1,512ft 8.7s 7s
OK Cesaroni H255 1,900g 80ft/s 456ft/s 21.2G 1,535ft 8.7s 7s
OK Cesaroni H160 1,901g 72ft/s 397ft/s 16.0G 1,540ft 8.9s 7s
OK AeroTech I200 1,940g 72ft/s 428ft/s 14.9G 1,573ft 8.9s 7s
OK Cesaroni I204 1,931g 75ft/s 453ft/s 17.9G 1,669ft 9.1s 7s
OK AeroTech I205 1,897g 70ft/s 461ft/s 18.6G 1,677ft 9.1s 7s
OK Cesaroni I224 1,952g 84ft/s 491ft/s 21.6G 1,799ft 9.2s 8s
OK Cesaroni I243 1,981g 81ft/s 493ft/s 21.5G 1,804ft 9.3s 8s
OK KBA J520 2,304g 99ft/s 775ft/s 30.5G 2,564ft 10.3s 9s
warningsW,D Estes G80 1,707g 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 (8ft/s)
failedG AeroTech E23 speed at end of launch guide too slow (20ft/s)
failedG AeroTech E16 speed at end of launch guide too slow (13ft/s)
failedG AeroTech F23 speed at end of launch guide too slow (23ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (24ft/s)
failedG AeroTech F27 speed at end of launch guide too slow (21ft/s)
failed5 Estes F15 average thrust fails 5:1 thrust/weight ratio (1:1)
failedG AeroTech F37 speed at end of launch guide too slow (25ft/s)
failedG AeroTech F62 speed at end of launch guide too slow (32ft/s)
failedG Cesaroni F36 speed at end of launch guide too slow (24ft/s)
failedG AeroTech F20 speed at end of launch guide too slow (24ft/s)
failedG Cesaroni F32 speed at end of launch guide too slow (21ft/s)
failedG AeroTech F42 speed at end of launch guide too slow (33ft/s)
failedG Cesaroni F29 speed at end of launch guide too slow (19ft/s)
failedG Cesaroni F31 speed at end of launch guide too slow (22ft/s)
failedA Cesaroni F120 rocket doesn't reach a safe altitude (143ft)
failedG Cesaroni F59 speed at end of launch guide too slow (35ft/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 (20ft/s)
failedG AeroTech F22 speed at end of launch guide too slow (17ft/s)
failedG AeroTech F52 speed at end of launch guide too slow (36ft/s)
failedG Apogee F10 speed at end of launch guide too slow (7ft/s)
failedG AeroTech F50 speed at end of launch guide too slow (36ft/s)
failedG Estes F50 speed at end of launch guide too slow (38ft/s)
failedG AeroTech F25 speed at end of launch guide too slow (29ft/s)
failedG AeroTech F40 speed at end of launch guide too slow (32ft/s)
failedG AeroTech G54 speed at end of launch guide too slow (37ft/s)
failedG AeroTech G74 speed at end of launch guide too slow (40ft/s)
failedG Cesaroni G88 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G38 speed at end of launch guide too slow (27ft/s)
failedG AeroTech G53 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G80 speed at end of launch guide too slow (39ft/s)
failedG Estes G40 speed at end of launch guide too slow (34ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G77 speed at end of launch guide too slow (37ft/s)
failedG Cesaroni G83 speed at end of launch guide too slow (42ft/s)
failedG Cesaroni G57 speed at end of launch guide too slow (38ft/s)
failedG Cesaroni G68 speed at end of launch guide too slow (35ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (36ft/s)
failedG AeroTech G79 speed at end of launch guide too slow (41ft/s)
failedG AeroTech G78 speed at end of launch guide too slow (42ft/s)
failedG AeroTech G40 speed at end of launch guide too slow (34ft/s)
failedG AeroTech G25 speed at end of launch guide too slow (23ft/s)
failedG AeroTech G64 speed at end of launch guide too slow (45ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (40ft/s)
failedG AeroTech G80 speed at end of launch guide too slow (43ft/s)
failedG AeroTech G75 speed at end of launch guide too slow (35ft/s)
failedG Cesaroni G106 speed at end of launch guide too slow (44ft/s)
failedG KBA G82 speed at end of launch guide too slow (37ft/s)
failedG KBA G135 speed at end of launch guide too slow (48ft/s)
failedG Cesaroni G33 speed at end of launch guide too slow (22ft/s)
failedG Cesaroni G54 speed at end of launch guide too slow (45ft/s)
failedG Cesaroni H54 speed at end of launch guide too slow (39ft/s)
failedG Cesaroni H87 speed at end of launch guide too slow (43ft/s)
failedG AeroTech H97 speed at end of launch guide too slow (43ft/s)
failedG Cesaroni H42 speed at end of launch guide too slow (28ft/s)
failedG Cesaroni H53 speed at end of launch guide too slow (35ft/s)

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