Recommended ratios for 16D can motor on medium sized track shown in light blue (using .760 tire)Recommended ratios for C can motors on medium sized track shown in tan boxes (using .760 tire)

6

7

8

9

10

11

12

13
<- pinion gear

27

3.857

3.375

3.000

2.700

2.455

27

28

4.000

3.500

3.111

2.800

2.800

28

29

4.143

3.625

3.222

2.900

2.636

29

48 pitch gears

30

4.286

3.750

3.333

3.000

2.727

30

31

4.429

3.875

3.444

3.100

2.818

31

32

4.571

4.000

3.556

3.200

2.909

32

33

4.714

4.125

3.667

3.300

3.000

33

34

4.857

4.250

3.778

3.400

3.091

34

35

5.833

5.000

4.375

3.889

3.500

3.182

2.917

2.692

35

36

6.000

5.143

4.500

4.000

3.600

3.273

3.000

2.769

36

37

6.167

5.286

4.625

4.111

3.700

3.364

3.083

2.846

37

64 pitch gears

38

6.333

5.429

4.750

4.222

3.800

3.455

3.167

2.923

38

39

6.500

5.571

4.875

4.333

3.900

3.545

3.250

3.000

39

40

6.667

5.714

5.000

4.444

4.000

3.636

3.333

3.077

40

41

5.857

5.125

4.556

4.100

3.727

3.417

3.154

41

42

6.000

5.250

4.667

4.200

3.818

3.500

3.231

42

72 pitch gears

43

6.143

5.375

4.778

4.300

3.909

3.583

3.308

43

44

6.286

5.500

4.889

4.400

4.000

3.667

3.385

44

45

6.429

5.625

5.000

4.500

4.091

3.750

3.462

45

46

6.571

5.750

5.111

4.600

4.182

3.833

3.538

46

47

6.714

5.875

5.222

4.700

4.273

3.917

3.615

47

80 pitch gears

48

6.857

6.000

5.333

4.800

4.364

4.000

3.692

48

49

7.000

6.125