Why?
- Contruction time is less.
- Weighs slightly less.
Wing warp can be caused or controlled with cheep high-temp covering that you can really cook.
four star 60 doesnt have a sheeted LE and the TE only has a couple of inches of sheeting but it does have an upper and lower main spar with a piece glued between them making an I-beam, two upper and two lower LE spars then of course the leading edge it self and behind the main spar it has diagonal bracing, and center sheeting. the wing is very stiff. so sheeting is not needed if designed and built right but sheeting is easier and faster.
is any one here gonna argue that seeing the dip between the LE and the main spar and ribs ir pretty? sheeting isnt that hard (infact irs really easy) and it adds a lot of strength to the plane, also why would you want to have to do a micky mouse fix job on your plane to shrink the warp out of the wing when you can do it right the first time and be happy about how your plane looks and flies. also this is a trainer if im not mistaken, and a new pilot also correct? that planes gonna have its share of bumps and bruises as theyall do. not sheeting it is basicly asking for a wing failure at a critical time. the 4*60 was DESIGNED not to have the sheeting it wasnet stated that it needed to be there and you felt like leaving it off also, it still has sheeting defeating the whole point of the original question!!! i personaly think that adding 3/16 shear webbing everywhere would be harder than sheeting at least the LE.
clearly if your building your own plane, you want it to look as good as possible or am i the only one who does this??
btw ill take pics tomorrow and try to post em.