Seeker Question 3) IF you use a lightweight filler, the density of the epoxy filler mix is less so you have less weight for the same volume and you might have 250g/ sq m per side added weight. 4) The 300g/sq m is per side so 600g/sq m for both sides.
7) I dont know what will happen if you dont prime the faom but when I removed a section of foam to add a piece of plywood for the chainplate I found the epoxy soaked foam really tough and the bond between foam and carbon reassuringly tough too.. I didnt use vacuum so I was pleased at that...
Shane
PS from the Divinycell Tech Sheet..
Primer coverage rates H60 - 360g/sq m H80 - 300g/sq m H100 - 275g H200 - 200g/sq m
Looking at the numbers I see that getting the H60 doesnt save you a lot of weight because you have to put much more epoxy to prime it.
1 sq m of H60 primed both sides = 600g + 360g +360g = 1320g 1 sqm of H80 primed both sides = 800g + 300 +300 = 1400g 1 sq m of H100 primed both sides = 1000g + 275g +275g = 1550g
