Construction started yesterday after work on the new main foil. After cutting my existing mould apart, and the usual surface prep, it was all systems go on the new verticals.

My current POS foil weighs in at a hefty 4.3kg, with it’s chewy bog-filled centre. A current generation Fastacraft foil is 2.3kg, so I have set myself a target of 2.5kg for my new ones.

With this in mind, a bit of thought went into exactly how thick the skins should be. My current foil is six layers of 300gsm uni, with an additional six at where the board exits the hull to stop this type of failure. This time around, I have kept the same number of layers, but reduced the weight to 200gsm, as the pultrusion spar(s) inside will make it a whole lot stronger than the last one.

The first, completed vertical skin weighs 460 grams before trimming. That gives me an estimated weight of less than 1.5kg for the 4 trimmed skins leaving 1Kg for the internal spars, foam core and T-join.

The new foil combined with a new rudder and the new gantry, my winter weight loss should be in excess of 3kg. Jenny Craig would be proud.

Update: The 4 finished un-trimmed skins weigh 1.3kg, 200g less than my estimate