Quote from: Shine on October 28, 2015, 02:14:42 PMThey do not need to fit perfectly, the loads should be transferred from hull to stringer evenly, through the fiberglass. For this reason you do not want the stringers resting on just a couple places (hard spots). Ideally the stringers will have a slight and constant gap under them. Use tiny slivers of foam or mixing sticks to keep them from touching, build your fillet, then glass.Joel,How much do you think the expanding foam within the stringers helps to distribute the load and prevent damage due to localized hard spots where the stringers and hull meet? Obviously the higher the density foam, the greater the ability to distribute the load. Most often 4 lb density seems to be used for this. Just wondering because some folks seem to be going the route of thicker glass stringers with no foam. Also wondering because I didn't follow your approach with the gap, although I did lay a couple extra layers of 1708 under the edges of the stringers (only applies to the areas where I removed one side of the stringers around my gas tank).
They do not need to fit perfectly, the loads should be transferred from hull to stringer evenly, through the fiberglass. For this reason you do not want the stringers resting on just a couple places (hard spots). Ideally the stringers will have a slight and constant gap under them. Use tiny slivers of foam or mixing sticks to keep them from touching, build your fillet, then glass.
JoelI have a question about keeping the stringers above the hull. If we keep them above the hull a 1/4" or so but them lay a fillet at the base does that create a "hard spot"I was thinking that making sure the entire base of the stringer was bedded with no voids would distribute the loads over a larger area. As always look forward to hearing your thoughts and advice.Northfork
Would you put some cloth over the bottom or just seal them in with a coat or two of epoxy?
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Topic: 1970 Aquasport 222 FB rebuild (Read 27918 times)
