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Title: How Much Added Runner Plank Stiffness with Glass Fiber? Post by: wnethercote on December 31, 2019, 11:51:19 AM I have never wrapped a runner plank with glass fiber, but have generally just epoxied and varnished the bare wood.
I have added 6 inch wide strips of 12 uni to the bottom of a plank: one 4 ft strip took a 94 lbs/in plank to 100 lbs/in. Adding another 5 ft and then a 6 ft strip took it from 100 lbs/in to 113 lbs/in. So it looks like you get +6 lbs/in per 6 inch wide strip of uni on the bottom, applied wet under squeeged-out peel ply. Has anyone done before and after stiffness measurements with a full wrap of (say) 6 ounce glass cloth? I am tempted to try a wrap, but don't want to ruin a good basic plank by making it too stiff. At my present weight I need a pretty soft runner plank (85 lbs/in or so). |