Styrofoam only sponsons

[Sigge]

I am designing a new super light 28 cell SAW rigger (my first wooden) and wonder if it is strength enough in styrofoam (and only styrofoam) to make sponsons of them for SAW racing?

[Jay Turner]

24-cell SAW boats are running in the 80s (mph), and I am afraid that if you blew off the water then the all-foam sponsons would be destroyed and the boat could sink. I don't believe that an extra ounce or two of weight makes any difference on a 24-cell boat - it is far better to use those 2 ounces for strength and reliability.

I would suggest that you sheet the inside and the bottom with 1/16th inch plywood as a minimum. And, take a spare set of sponsons with you. :)

[Zippifried]

Yeppers, Jay's right.... A boat of that cell count would destroy foam sponsons.. Sheet 'em!!!

Take Care,
Paul