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Gears - Download as Excel

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					                                                           Input Criteria

   RPM                    Torque                      Motor Gear                         Wheel Gear
 (rev/min)                (Ncm)
                                                8 tooth    2       16               40 tooth   4
    300.00                    9.00              16 tooth                            Worm


Motor RPM of 300 and torque
of 9 Ncm are indicative of a
Mindstorms 9 volt gear reduction                                                        Encoder Gear
motor.
                                                                                    8 tooth    1
                                                                                    16 tooth




                                                                 Results

                                      Speed                              Torque                Force
                          (ft/min)    (mph)     (inch/sec)               (Ncm)          (N)

                          53.43        0.61       10.69                   22.50       10.42


                                Travel times (sec)                                  Tick Ruler Information
                          4 feet     8 feet      16 feet                             Decimal
                           4.5         9.0         18.0                 Inch/Tick         0.07
                                                                        Inch/10T          0.67
                                                                        Inch/20T          1.34
             A tick ruler can simply your teams job when                Inch/30T          2.00
             writing odometry software. On a dowel or back              Inch/40T          2.67
             of a yardstick, mark of the locations for various          Inch/50T          3.34
             tick values. The table to the right tells you              Inch/60T          4.01
             what distance from one end of the stick to                 Inch/70T          4.68
             make the marks. The "decimal" column is the                Inch/80T          5.34
             same as the combined "inch" and "1/16"                     Inch/90T          6.01
             columns.                                                   Inch/100T         6.68
             Now the team can use the "tick ruler" to directly          Inch/200T        13.36
             measure distances. They may need some final                Inch/300T        20.04
             adjustments, but it will get them close.                   Inch/400T        26.72
                                                                        Inch/500T        33.39
ia

      Wheel Gear                                 Wheel Type

 40 tooth                  40               Truck wheels
                                                      8       43.2
 Worm                                       Mars Rover




     Encoder Gear

 8 tooth                    8
 16 tooth




            Force
                    (oz)

                    37.40


Tick Ruler Information
               Inch             1/16
                     0                  1
                     0                 11
                     1                  5
                     2                  0
                     2                 11
                     3                  5
                     4                  0
                     4                 11
                     5                  5
                     6                  0
                     6                 11
                    13                  6
                    20                  1
                    26                 11
                    33                  6
      Wheel         (mm)
Small Solid           24.0
Medium Solid          30.0
Large Solid           43.0
Small Balloon         30.4
Medium Balloon        49.6
Large Balloon         81.6
Truck wheels          56.0
Mars Rover            43.2
Tracks on spindle     30.2
Pulley Wheel          30.0




      Gears         Teeth
8 tooth                  8
16 tooth                16
24 tooth                24
40 tooth                40
Worm                     1

				
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