A snowmobile steering ski comprises a longitudinally extending body having a front portion, a central portion, a rear portion, a top surface configured to be secured to a snowmobile, and a bottom running surface configured to travel or glide over snow. The steering ski comprises at least one keel bl
A snowmobile steering ski comprises a longitudinally extending body having a front portion, a central portion, a rear portion, a top surface configured to be secured to a snowmobile, and a bottom running surface configured to travel or glide over snow. The steering ski comprises at least one keel blade typically removably mounted to the body and downwardly extending from the bottom surface and generally extending longitudinally along at least a portion of the bottom surface. The bottom surface is further slightly upwardly arched, generally along the central portion thereof, such that the bottom surface defines a generally front pressure zone and a generally rear pressure zone. The rear pressure zone is located longitudinally behind the at least one keel blade, and is configured for substantially filling the trace(s) formed in the snow by the at least one keel blade such that the steering ski leaves little or no trace(s) in its wake.
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1. A snowmobile steering ski comprising a main body extending longitudinally, the main body comprising a top surface configured to be secured to a snowmobile, a bottom surface, a first side edge and a second side edge, the main body comprising a front portion, a central portion, and a rear portion,
1. A snowmobile steering ski comprising a main body extending longitudinally, the main body comprising a top surface configured to be secured to a snowmobile, a bottom surface, a first side edge and a second side edge, the main body comprising a front portion, a central portion, and a rear portion, the ski comprising at least one longitudinally extending keel blade extending downwardly from the bottom surface wherein the bottom surface of the central portion is longitudinally continuous and slightly longitudinally upwardly arched to define a front area and a rear pressure area. 2. A snowmobile steering ski as claimed in claim 1, wherein the bottom surface is slightly longitudinally upwardly arched to define a front area and a rear pressure area. 3. A snowmobile steering ski as claimed in claim 1, wherein the at least one keel blade extends longitudinally along the central portion. 4. A snowmobile steering ski as claimed in claim 2, wherein the at least one keel blade extends longitudinally between the front area and the rear pressure area. 5. A snowmobile steering ski as claimed in claim 1, wherein the bottom surface comprises at least one slot configured to removably receive the at least one keel blade. 6. A snowmobile steering ski as claimed in claim 3, wherein the main body has a first width, wherein the at least one keel blade has a second width, and wherein the second width is significantly thinner than the first width. 7. A snowmobile steering ski as claimed in claim 6, wherein the second width is less than 15% of the first width. 8. A snowmobile steering ski as claimed in claim 1, wherein the at least one keel blade is made from metallic material. 9. A snowmobile steering ski as claimed in claim 1, wherein the at least one keel blade comprises two longitudinally extending keel blades extending downwardly from the bottom surface, the two keel blades being laterally spaced apart. 10. A snowmobile steering ski as claimed in claim 9, wherein the two keel blades have different configurations. 11. A snowmobile steering ski as claimed in claim 9, wherein the bottom surface comprises two slots configured to respectively receive the two keel blades. 12. A snowmobile steering ski as claimed in claim 7, wherein the front portion is slightly concave along the bottom surface. 13. A snowmobile steering ski as claimed in claim 12, wherein the rear portion is slightly concave along the bottom surface. 14. A snowmobile steering ski as claimed in claim 1, wherein the main body is substantially made from polymeric material. 15. A snowmobile having secured thereto a pair of steering skis as claimed in claim 1. 16. A snowmobile steering ski comprising a main body extending longitudinally, the main body comprising a top surface configured to be secured to a snowmobile, a bottom surface, a first side edge and a second side edge, the main body comprising a front portion, a central portion, and a rear portion, the bottom surface comprising at least one longitudinally extending slot configured to removably receive at least one longitudinally extending keel blade wherein the bottom surface is longitudinally continuous and slightly longitudinally upwardly arched to define a front area and a rear pressure area. 17. A snowmobile steering ski as claimed in claim 16, wherein the bottom surface of the central portion is slightly longitudinally upwardly arched to define a front area and a rear pressure area. 18. A snowmobile steering ski as claimed in claim 16, wherein the at least one slot extends longitudinally along the central portion. 19. A snowmobile steering ski as claimed in claim 16, wherein the at least one slot extends longitudinally between the front area and the rear pressure area. 20. A snowmobile steering ski as claimed in claim 16, further comprising at least one keel blade removably received into the at least one slot. 21. A snowmobile steering ski as claimed in claim 20, wherein the main body has a first width, wherein the at least one keel blade has a second width, and wherein the second width is significantly thinner than the first width. 22. A snowmobile steering ski as claimed in claim 21, wherein the second width is less than 15% of the first width. 23. A snowmobile steering ski as claimed in claim 20, wherein the at least one keel blade is made from metallic material. 24. A snowmobile steering ski as claimed in claim 16, wherein the at least one slot comprises two slots, each of the two slots being configured to removably receive at least one keel blade. 25. A snowmobile steering ski as claimed in claim 24, wherein the two slots are laterally spaced apart. 26. A snowmobile steering ski as claimed in claim 24, further comprising at least one keel blade removably received into at least one slot of the two slots. 27. A snowmobile steering ski as claimed in claim 24, further comprising two keel blades respectively removably received into the two slots. 28. A snowmobile steering ski as claimed in claim 27, wherein the two keel blades have different configurations. 29. A snowmobile steering ski as claimed in claim 22, wherein the front portion is slightly concave along the bottom surface. 30. A snowmobile steering ski as claimed in claim 29, wherein the rear portion is slightly concave along the bottom surface. 31. A snowmobile steering ski as claimed in claim 16, wherein the main body is substantially made from polymeric material. 32. A snowmobile having secured thereto a pair of steering skis as claimed in claim 16. 33. A snowmobile steering ski comprising a main body extending longitudinally, the main body comprising a top surface configured to be secured to a snowmobile, a bottom surface, a first side edge and a second side edge, the main body comprising a front portion, a central portion, and a rear portion, the bottom surface being longitudinally continuous and slightly upwardly longitudinally arched to define a front area and a rear pressure area, the bottom surface comprising at least one longitudinally extending slot configured to removably receive at least one longitudinally extending keel blade and located between the front area and the rear pressure area. 34. A snowmobile steering ski as claimed in claim 33, further comprising at least one keel blade removably received into the at least one slot. 35. A snowmobile steering ski as claimed in claim 34, wherein the main body has a first width, wherein the at least one keel blade has second width, and wherein the second width is 15% of the first width. 36. A snowmobile steering ski as claimed in claim 34, wherein the front portion is slightly concave along the bottom surface, the rear portion is slightly concave along the bottom surface.
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