TB Awards 2/9/17
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Contact Us
St. Peters BMX Map

Location:
100 Brown Rd
St. Peters MO 63376
View Map | Get Directions

Track Operator:
Mike & Laurie Demmin
(636) 486-6787
stpbmx@gmail.com
636-278-2568
stpbmx@gmail.com

Track Image

Gear Charts

Rider Height

Frame Size

Top Tube Length

Stem Length

Bar Rise

Bar Width

4'0 & Under

Micro-Mini

15"-15.5"

Mini

2"-2.5"

20"-21.5"

4'0"-4'4"

Mini

15.5"-16.5"

Mini-Mini XL

2"-3.5"

21"-23"

4'4"-4'10"

Junior

16"-17.5"

Mini-Mini XL

3"-4.5"

22"-24.5"

4'8"-5'4"

Expert

17"-18.5"

Pro

4.5"-6"

24"-26"

5'2"-5'10"

Expert XL

18"-19"

Pro

6"-7.5"

26"-27"

5'6"-5'10"

Pro

18.5"-19.5"

Pro-Pro XL

7"-8"

27"-28"

5'10"-6'1"

Pro XXL

19"-21"

Pro-Pro XL

7"-8"

27"-28"

6' & Over

Pro XXL

20.5" & Over

Pro XL-Pro XXL

7"-8"

28"+

 

 

Cranks

             
               

Rider's Inseam

20"

21"

22"

23"

24"

25"

26"

Crank Length

140mm

145mm

150mm

155mm

160mm

162mm

166mm

Rider's Inseam

27"

28"

29"

30"

31"

32"

34"

Crank Length

171mm

175mm

177mm

180mm

182mm

185mm

190mm

               

 

 

 

 

 

20" X 1.75" Gear Chart

                     
                           

Chain Wheels

34

35

36

37

38

39

40

41

42

43

44

45

46

Freewheel 14

47.4

48.7

50.2

51.6

53

54.4

55.7

57.1

58.5

59.9

61.9

62.7

64.1

Freewheel 15

44.3

45.4

46

48.1

49.4

50.7

52

53.3

54.6

55.9

57.2

58.5

59.8

Freewheel 16

41.5

42.7

43.6

45.1

46.3

47.5

48.8

50

51.2

52.4

53.7

54.9

56.1

Freewheel 17

39

40.2

41.3

42.5

43.6

44.7

45.9

47

48.2

49.4

50.5

51.7

52.8

Freewheel 18

36.8

37.8

39

40.1

41.2

42.3

43.3

44.4

45.5

46.6

47.7

48.8

49.9

                           

20" X 1.50" Gear Chart

                     
                           

Chain Wheels

34

35

36

37

38

39

40

41

42

43

44

45

46

Freewheel 14

46.8

48.1

49.5

50.9

52.3

53.6

55

56.4

57.5

59.1

60.5

61.8

63.2

Freewheel 15

43.6

44.9

46.2

47.4

48.8

50.1

51.3

52.8

53.9

55.2

56.5

57.7

59.1

Freewheel 16

40.9

42.1

43.3

44.5

45.7

46.9

48.1

49.3

50.5

51.7

52.9

54.1

55.3

Freewheel 17

38.5

39.6

40.8

41.9

43.1

44.1

45.2

46.4

47.5

48.7

49.8

51

52.2

Freewheel 18

36.4

37.4

38.5

39.6

40.6

41.7

42.8

43.9

44.9

46

47

48.1

49.2

                           
                           

20" X 1 3/8" Gear Chart

                       
                           

Chain Wheels

34

35

36

37

38

39

40

41

42

43

44

45

46

Freewheel 14

51

52.5

54

55.5

57

58.5

60

61.5

63

64.5

66

67.5

69

Freewheel 15

47.6

49

50.4

51.6

53.2

54.6

56

57.4

58.8

60.2

61.6

63

64.4

Freewheel 16

44.6

45.9

47.3

48.6

49.9

51.2

52.5

53.9

55.2

56.5

57.8

59.1

60.4

Freewheel 17

42

43.2

44.5

45.7

47

48.2

49.4

50.7

51.9

53.2

54.4

55.6

56.9

Freewheel 18

39.7

40.7

42

43.2

44.4

45.5

46.7

47.9

49

50.2

51.4

52.5

53.7

                           
                           

20" X 1 1/8" Gear Chart

                   
                           

Chain Wheels

34

35

36

37

38

39

40

41

42

43

44

45

46

Freewheel 14

48.6

50

51.4

52.8

54.3

55.7

57.1

58.6

60

61.4

62.8

64.3

65.7

Freewheel 15

45.3

46.7

48

49.3

50.7

52

53.3

54.7

56

57.3

58.7

60

61.3

Freewheel 16

42.5

43.8

45

46.2

47.5

48.7

50

51.2

52.5

53.7

55

56.2

57.5

Freewheel 17

40

41.2

42.3

43.5

44.7

45.9

47

48.2

49.4

50.6

51.8

52.9

54.1

Freewheel 18

37.7

38.8

40

41.1

42.2

43.3

44.4

45.6

46.7

47.8

48.9

50

51.1

                           
                           

24" X 1.75" Gear Chart

                     
                           

Chain Wheels

34

35

36

37

38

39

40

41

42

43

44

45

46

Freewheel 14

58.3

60

61.7

63.3

65

66.9

68.6

70.3

72

73.7

75.3

77

78.9

Freewheel 15

54.4

56

57.6

59.3

60.7

62.4

64.1

65.5

67.2

68.9

70.3

72

73.7

Freewheel 16

51

52.5

54

55.5

57

58.5

60

61.4

63.1

64.5

66

67.4

69.1

Freewheel 17

48

49.4

50

52.2

53.6

55.1

56.5

57.9

59.3

60.7

62.1

63.6

65

Freewheel 18

45.3

46.5

48

49.4

50.7

52

53.3

54.7

56

57.3

58.5

60

61.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24" X 1.50" Gear Chart

                     
                           

Chain Wheels

34

35

36

37

38

39

40

41

42

43

44

45

46

Freewheel 14

55.9

57.5

59.1

60.7

62.3

64.2

65.8

67.4

69

70.6

72.2

73.8

75.7

Freewheel 15

52.1

53.7

55.2

56.7

58.2

59.8

61.3

62.8

64.4

65.9

67.4

69

70.6

Freewheel 16

48.4

50.3

51.8

53.2

54.6

56

57.5

58.9

60.3

61.8

63.2

64.6

66.2

Freewheel 17

46

47.3

48.7

50

51.4

52.8

54.1

55.5

56.8

58.8

59.5

60.8

62.3

Freewheel 18

43.4

44.7

46

47.2

48.5

49.8

51.1

52.4

53.7

54.9

56.2

57.5

58.9

                           

24" X 1 3/8" Gear Chart

                   
                           

Chain Wheels

34

35

36

37

38

39

40

41

42

43

44

45

46

Freewheel 14

58.3

60

61.7

63.3

65

66.9

68.6

70.3

72

73.7

75.3

77

78.9

Freewheel 15

54.4

56

57.6

59.3

60.7

62.4

64.1

65.5

67.2

68.9

71.3

72

73.7

Freewheel 16

51.1

52.5

54

55.5

57

58.5

60

61.4

63.1

64.5

66

67.4

69.1

Freewheel 17

48

49.4

50.8

52.2

53.6

55.1

56.5

57.9

59.3

60.7

62.1

63.3

65

Freewheel 18

45.3

46.5

48

49.4

50.7

52

53.3

54.7

56

57.3

58.5

60

61.4

                           
                           

24" X 1 1/8" Gear Chart

                   
                           

Chain Wheels

34

35

36

37

38

39

40

41

42

43

44

45

46

Freewheel 14

54.9

56.5

58.1

59.7

61.3

63.1

64.7

66.3

67.9

69.4

71

72.6

74.4

Freewheel 15

51.3

52.8

54.3

55.8

57.3

58.8

60.3

61.8

63.3

64.9

66.3

67.9

69.4

Freewheel 16

48.1

49.5

50.9

52.3

53.7

55.1

56.6

57.9

59.5

60.8

62.2

63.9

65.1

Freewheel 17

45.2

46.6

47.9

49.3

50.6

51.9

53.2

54.6

55.9

57.2

58.6

59.9

61.3

Freewheel 18

42.7

43.9

45.2

46.6

47.7

49.1

50.3

51.5

52.8

54

55.3

56.6

57.9

                           
                           

 

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