Gaming machine having hub-less reels

1. A gaming machine comprising:

a cabinet; and

at least one cylindrical mechanical reel mounted in the cabinet to display symbols indicative, at least in part, of a randomly selected outcome of a wagering game, the mechanical reel being rotatable about a fixed internal axis, the mechanical reel defining an interior space that is free of a hub along the internal axis.

2. The gaming machine of claim 1 , wherein the mechanical reel includes an outer rim supporting a strip that bears the symbols.

3. The gaming machine of claim 2 , further comprising a motor mounted proximate the rim and away from the internal axis, the motor configured to rotate the mechanical reel about the internal axis.

4. The gaming machine of claim 3 , wherein the motor is mounted adjacent to an external surface of the rim.

5. The gaming machine of claim 2 , further comprising a drive train having contact points for making contact with both an internal surface and an external surface of the rim, the drive train being coupled to and driven by the motor.

6. The gaming machine of claim 5 , wherein the drive train is selected from a group consisting of rubber wheels, tracked teeth, geared teeth, magnetic fields, and a belt.

7. The gaming machine of claim 5 , wherein the drive train includes an arrangement of at least three wheels, at least one of the wheels being a driven wheel rotated by the motor.

8. The gaming machine of claim 7 , wherein the wheels are symmetrically arranged around the rim.

9. The gaming machine of claim 2 , further comprising one or more conductive rails attached to the rim and having electrical circuitry for displaying video images of the symbols on the strip.

10. The gaming machine of claim 2 , further comprising electro-mechanical devices attached to the rim for displaying images on the mechanical reel, the images including one or more of a video image and a physical image indicative of the symbols.

11. The gaming machine of claim 2 , wherein the strip includes at least one of a transparent and a translucent material.

12. The gaming machine of claim 1 , wherein a majority of the interior space is substantially free of any components of the mechanical reel.

13. The gaming machine of claim 12 , wherein at least 75 percent of the interior space is free of any components of the mechanical reel.

14. The gaming machine of claim 1 , wherein the mechanical reel is mounted such that the internal axis is horizontal relative to the cabinet.

15. The gaming machine of claim 1 , further comprising an additional reel mounted coaxial with the mechanical reel within the interior space, the additional reel being independently rotatable from the mechanical reel.

16. The gaming machine of claim 1 , further comprising temporarily moving objects through the interior space for presenting game-related effects.

17. A gaming machine comprising:

at least one cylindrical mechanical reel mounted to display symbols indicative, at least in part, of a randomly selected outcome of a wagering game, the mechanical reel being rotatable about an internal axis and including an outer rim; and

a motor and drive train configured to rotate the mechanical reel about the internal axis, the motor and drive train being mounted adjacent to the outer rim and away from the internal axis.

18. The gaming machine of claim 17 , wherein the mechanical reel contains a central space around the internal axis, the motor and drive train being mounted outside the central space.

19. The gaming machine of claim 18 , wherein a majority of the central space is substantially free of any components of the mechanical reel.

20. The gaming machine of claim 19 , wherein at least 75 percent of the central space is free of any components of the mechanical reel.

21. The gaming machine of claim 18 , further comprising temporarily moving objects through the central space for presenting game-related effects.

22. The gaming machine of claim 17 , wherein the outer rim supports a strip that includes at least one of a transparent and a translucent material.

23. The gaming machine of claim 17 , further comprising electro-mechanical devices attached to the outer rim for displaying images on the mechanical reel, the images including one or more of a video image and a physical image indicative of the symbols.

24. The gaming machine of claim 17 , further comprising an additional reel mounted coaxial with the mechanical reel within the central space, the additional reel being independently rotatable from the mechanical reel.

25. A gaming machine comprising:

at least one cylindrical mechanical reel mounted to display symbols indicative, at least in part, of a randomly selected outcome of a wagering game, the mechanical reel being rotatable about an internal axis and including an outer rim, the mechanical reel containing a central space around the internal axis; and

a motor and drive train configured to rotate the mechanical reel about the internal axis, the motor and drive train being mounted adjacent to the outer rim and outside the central space.

26. The gaming machine of claim 25 , wherein a majority of the central space is substantially free of any components of the mechanical reel.

27. The gaming machine of claim 26 , wherein at least 75 percent of the central space is free of any components of the mechanical reel.

28. The gaming machine of claim 25 , further comprising temporarily moving objects through the central space for presenting game-related effects.

29. The gaming machine of claim 25 , wherein the outer rim supports a strip that includes at least one of a transparent and a translucent material.

30. The gaming machine of claim 25 , further comprising electro-mechanical devices attached to the outer rim for displaying images on the mechanical reel, the images including one or more of a video image and a physical image indicative of the symbols.