Sprocket

1. A sprocket, comprising:

teeth radially projecting from a body,

the teeth including first teeth having a first maximum axial width and second teeth having a second maximum axial width greater than the first maximum axial width alternately arranged with the first teeth,

the sprocket to rotate in a drive direction about a rotational axis, and, at the second maximum axial width, the second teeth being asymmetrical about a plane extended radially from the rotational axis through a root center of a respective tooth.

2. The sprocket of claim 1 , wherein the first and second teeth comprise a series of alternating axially wide and axially narrow teeth relative to each other.

3. The sprocket of claim 1 , further comprising:

the second teeth being substantially symmetrical about a centerline oriented substantially perpendicular to the plane extended radially from the rotational axis.

4. The sprocket of claim 1 , further comprising:

the second teeth having a drive-side surface at a leading side thereof relative to the drive direction, a lateral surface at the second maximum axial width, and a drive-side relief between the drive-side surface and the lateral surface,

the drive-side relief comprising a substantially linear surface.

5. The sprocket of claim 4 , wherein the drive-side relief comprises a chamfer between the drive-side surface and the lateral surface.

6. The sprocket of claim 4 , further comprising:

the second teeth having a non-drive-side surface at a trailing side thereof relative to the drive direction, and a non-drive-side relief between the non-drive-side surface and the lateral surface,

the non-drive-side relief comprising a substantially linear surface.

7. The sprocket of claim 6 , wherein the non-drive-side relief comprises a chamfer between the non-drive-side surface and the lateral surface.

8. The sprocket of claim 6 , wherein an absolute value of an angle of the drive-side relief relative to the lateral surface is less than an absolute value of an angle of the non-drive-side relief relative to the lateral surface.

9. The sprocket of claim 1 , wherein the sprocket comprises a chainring.

10. A sprocket, comprising:

first teeth having a first maximum axial width; and

second teeth having a second maximum axial width greater than the first maximum axial width, the second teeth alternately arranged with the first teeth,

the second teeth having a leading surface relative to a drive direction of the sprocket, a lateral surface at the second maximum axial width, and a beveled relief between the leading surface and the lateral surface,

a midline of the lateral surface oriented substantially parallel with and being offset relative to a plane extended radially through a root center of a respective tooth.

11. The sprocket of claim 10 , wherein the midline of the lateral surface is offset in a direction opposite the drive direction of the sprocket.

12. The sprocket of claim 10 , wherein the beveled relief comprises a substantially linear surface between the leading surface and the lateral surface.

13. The sprocket of claim 10 , wherein the second teeth are substantially symmetrical about a centerline oriented substantially perpendicular to the plane extended radially through the root center of a respective tooth.

14. The sprocket of claim 10 , further comprising:

the second teeth having a trailing surface relative to the drive direction of the sprocket, and a beveled relief between the trailing surface and the lateral surface.

15. The sprocket of claim 14 , wherein a maximum axial width of the leading surface is greater than a maximum axial width of the trailing surface.

16. A sprocket, comprising:

alternating first and second teeth,

the first teeth having a first maximum axial width, and the second teeth having a second maximum axial width greater than the first maximum axial width,

the second teeth having a lateral surface at the second maximum axial width, and, relative to a plane extended radially from a rotational axis of the sprocket through a root center of a respective tooth, the second teeth being asymmetrical at the lateral surface.

17. The sprocket of claim 16 , further comprising:

the second teeth being substantially symmetrical about a centerline oriented substantially perpendicular to the plane extended radially from the rotational axis of the sprocket through the root center of a respective tooth.

18. The sprocket of claim 16 , further comprising:

the lateral surface having a midline oriented substantially parallel with and offset relative to the plane extended radially from the rotational axis of the sprocket through the root center of a respective tooth.

19. The sprocket of claim 18 , wherein the offset of the midline of the lateral surface is in a direction opposite a drive direction of the sprocket.

20. The sprocket of claim 16 , further comprising:

the second teeth having a drive side relative to a drive direction of the sprocket and a non-drive side opposite the drive side, a drive-side surface at the drive side, and a non-drive-side surface at the non-drive side,

a maximum axial width of the drive-side surface being greater than a maximum axial width of the non-drive-side surface.

21. The sprocket of claim 20 , further comprising:

the second teeth having a drive-side relief extended between the drive-side surface and the lateral surface.

22. The sprocket of claim 21 , further comprising:

the drive-side relief comprising a chamfer.

23. The sprocket of claim 20 , further comprising:

the second teeth having a non-drive-side relief between the non-drive-side surface and the lateral surface.

24. The sprocket of claim 23 , further comprising:

the non-drive-side relief comprising a chamfer.