It is sometime now I'm developing planes, mostly gliders, to suit my personal taste.
Out of curiosity I started to use some new materials to learn something new.
As a first attempt I did build two fuselages for a plank, called Trisel.
Those are respectively prototypes #5 and #6.
The first fuselage is done in Flax fabric (Eco_Trisel), two 220g/m² layers and a third one on the nose.
The result is a very stiff, hard and heavy fuselage, probably well suited for slope and hard use.
The material is thick and resin hungry, 1.5-2 times the amount needed for fiberglass.
I leaved the surface natural for show purpose, but a layer of transparent gelcoat revealed to be mandatory. The fabric is so hungry that it seems always dry and there are several pinholes.
The second fuselage is done in basalt fabric (therefore the name: Volcanic_Trisel).
It is composed from a 110g/m² plain, 220g/m² twill and a third layer of 220g/m² on a 45° bias.
This one is very thin instead, the lighter of all six prototypes, stiff enough. Not comparable to Flax, but almost as fiberglass or even better, considering it is really thin and light.
This fabric wets very well and epoxy usage was about 2/3 of a fiberglass one and 1/3 of the Flax one.
Weight is 100g, vs. 120-130g of fiberglass and 160 (!) of Flax.
Next step could be using vegetal based epoxy =;D