Y2K construction
#22
#23
Thanks Rick, I was considering moving the seats forward an inch or two. But, I just noticed that probably won't work because the arm of the seat is already up to the throttle area.
#24
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Joined: May 2006
Posts: 420
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From: Cape Cod
Please forgive what is no doubt a stupid question. Is the cored layup stronger because of the coring? That is, does the lighter glass allow you to core the sides, thereby making the whole sandwich stronger than the un-cored sides on a standard layup?
#25
A cored laminate can achieve the same flexural stiffness with much less glass. The middle of the section near the "neutral axis" of the laminate doesn't do much in bending. But, cored structures don't handle shear well, and can delaminate due to impact easiliy, especially if not engineered and constructed properly.
Engineered to withstand the same load, the soild boat will be heavier and much tougher. If the cored boat is built to withstand a higher load, then it can still be lighter, and tough enough.
There was a great article in Professional Boat Builder probably 12 years ago, where they dropped bowling balls on test sections of cored and uncored laminate. The cored got mashed, while the soild held up under the impact. But, we usually aren't designing for impact, are we?
Engineered to withstand the same load, the soild boat will be heavier and much tougher. If the cored boat is built to withstand a higher load, then it can still be lighter, and tough enough.
There was a great article in Professional Boat Builder probably 12 years ago, where they dropped bowling balls on test sections of cored and uncored laminate. The cored got mashed, while the soild held up under the impact. But, we usually aren't designing for impact, are we?






