Grady White Marlin 28 1994 balsa hull
- Thread starter Peejcj8
- Start date
suspect that is the dimensions in centimeters of the end grain balsa coring. Equivalent to 18 inches by 192 inches.
Late Again Grady
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The code "48x 4b8" likely refers to a specific type or density of Balsa core material, used in composites for its high strength-to-weight ratio, often in marine or wind energy applications, with suppliers like Sky Composites (Cobalsa) offering similar products, indicating it's a common, renewable core for lightweight, durable panels.
What it means:
What it means:
- Balsa Core: A natural, lightweight wood (from Ochroma pyramidale trees) processed into core material for sandwich composites, providing exceptional compressive strength.
- 48x: Often denotes the sheet size (e.g., 4 feet by 8 feet, or 48 inches by 96 inches).
- 4b8 (or similar codes): Likely a density or grade identifier, possibly related to density (e.g., 4-pound density) or a specific product line from a manufacturer
On the drawing it states that "All dimensions are in inches" That's a lot of balsa.
My thinking is that the numbers are in a way a part number. The part number is made up with the dimensions although I couldn't figure out how the thickness was specified. The balsa is endgrain small pieces abutted next to each other.. I do not know and would like to understand, exactly how the balsa is attached to the hull sides during layup. Some sort of flexible mesh is one approach that might be used. In any case the conversion the conversion I made to inches seems to be in the ballpark for what one would expect for that hull.
LateAgain Grady's explanation has merit also. The important think to note is that the panels can't be rigid for layup. The pieces of endgrain have to form to the inside hull shape
LateAgain Grady's explanation has merit also. The important think to note is that the panels can't be rigid for layup. The pieces of endgrain have to form to the inside hull shape
A spec drawing like above generally won't give specific part numbers - just the types of materials being used.
Without going the Google/AI route, I do not know the coding question. I would only guess that it's related to it's physical size (like thickness) or something like that.
Yes, you can purchase balsa pre-cut into little squares, but assembled into sheets of various sizes using a "backer" of a flexible mesh like you questioned, Seasick.
Without going the Google/AI route, I do not know the coding question. I would only guess that it's related to it's physical size (like thickness) or something like that.
Yes, you can purchase balsa pre-cut into little squares, but assembled into sheets of various sizes using a "backer" of a flexible mesh like you questioned, Seasick.
