Trek 800 Drive-Speed Ratio

Pedal Drive Arm

17

cm

Wheel Radius

33

cm

Driven Gear Teeth

28

24

21

18

16

14

Gear Speed Ratio:

Drive

28

1.00

1.17

1.33

1.56

1.75

2.00

Sprocket

38

1.36

1.58

1.81

2.11

2.38

2.71

Teeth

48

1.71

2.00

2.29

2.67

3.00

3.43

Shifter Position

1

2

3

4

5

6

Total Linear

Shifter

1

1.94

2.26

2.59

3.02

3.40

3.88

Drive-Speed Ratio

Position

2

2.63

3.07

3.51

4.10

4.61

5.27

3

3.33

3.88

4.44

5.18

5.82

6.66

Trek 830 Drive-Speed Ratio

Pedal Drive Arm

17

cm

Wheel Radius

33

cm

Driven Gear Teeth

28

24

21

18

15

13

11

Gear Speed Ratio:

Drive

24

0.86

1.00

1.14

1.33

1.60

1.85

2.18

Sprocket

34

1.21

1.42

1.62

1.89

2.27

2.62

3.09

Teeth

42

1.50

1.75

2.00

2.33

2.80

3.23

3.82

Shifter Position

1

2

3

4

5

6

7

Total Linear

Shifter

1

1.66

1.94

2.22

2.59

3.11

3.58

4.24

Drive-Speed Ratio

Position

2

2.36

2.75

3.14

3.67

4.40

5.08

6.00

3

2.91

3.40

3.88

4.53

5.44

6.27

7.41

Bianchi Drive-Speed Ratio

Pedal Drive Arm

17

cm

Wheel Radius

34.3

cm

Driven Gear Teeth

30

26

22

18

16

14

Gear Speed Ratio:

Drive

40

1.33

1.54

1.82

2.22

2.50

2.86

Sprocket

52

1.73

2.00

2.36

2.89

3.25

3.71

Teeth

Shifter Position

1

2

3

4

5

6

Total Linear

Shifter

1

2.69

3.10

3.67

4.48

5.04

5.76

Drive-Speed Ratio

Position

2

3.50

4.04

4.77

5.83

6.56

7.49