Hi! We didn’t do anything spectacular, the reason it is light is because the bladerider rudder and elevator was light. Haven’t had a look inside the mainfoil/rudder, so don’t know what mach2 did there.tomtom wrote: ↑Tue Mar 19, 2019 8:46 pmBest strategy for stiffness is always thickness. 2.6 total is super light!
did you mind share construction details - you probably have core inside when so light... ? Mainly about mast and fuse - profiles - technology...
Im going to make custom mast for moses - hoping for much stiffer than original... Not racing setup so i make it thicker...
The mast/vertical was made with two plastic bags inside that the pumped up in a mould. I know that mach2 have moved on to use some kind of foam nowadays to be able to make it thinner/stiffer. The cord is 12 cm, so quite wide. Thickest point probably 14 mm, maybe 13.
The stuff we did ourselves is made with carbon and some glass for thickness through and through on baseplate/stabilizer. Nothing special there, probably used way too much resin.
Fuselage is made with 6 layers of 4mm plywood, close to three cm high. At the moment only one layer of carbon on the outside, except for two extra layers of uni going out from the mast position. 6 layers of carbon on each side of the inside of where the mast attaches.
Plan is probably to add some thin and long strips of uni from mast attachement going in an x shape to where the mainfoil attaches, then two layers of twill over everything to get more torsional stiffnes, does that sound reasonable?