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B. Runner Plank

      English       Metric
  Max Min   Max Min
  1.   96 94   2438.0 2388.0 Length overall (including hardware except pivot bolt):
  2.   7-1/2 6-1/2   190.5 165.2 Width at centerline:
  3.   1-5/8 1-1/8   41.2 28.6 Thickness at centerline:
  4.   7-1/2 5-1/2   190.5 139.5 Width at ends:
  5.   1-5/8 1   41.2 25.5 Thickness at ends:
  6. Cross section is optional
  7. Runner plank shall be constructed of wood. Number of laminations is optional. Fiberglass may be added. See Interpretations-General.
  8. The underside of the runner plank shall be higher at the centerline than the underside of the outside ends. The profile of the plank lamination must assume a reasonable fair and continuous curve. Cutouts or hollow depressions are not permitted.
  9. The runner plank, including all hardware and pivot bolts, may not weight less than 20 lbs. (9.0 kg.).

See Runner Plank Interpretations at end of Specifications.