RE: Seagull PC-9 120 size...
Hi,
Yes, my mistake on the 31lbs !! It's heavy isn't it ! ! LOL.
Breaking news !................................ I have just used a laser incidence meter on the wing tips and this plane has........................... WASH IN. !! No wonder it stalls !! This is IMO, has to be the major reason for it's tip stalling..
Sure it has a high wing loading but it should be manageable ( as many others, mostly fighters) are .
I think the best idea ito make washout is as follows. My plan is to remove the covering from the underside of the last 6or so wingbays and then use a razor saw to cut 98% of the way through each rib. These cuts will nearly cut the ribs in half vertically behind the spars. I will try to leace the ribs intact right at the upper surface of the top spar so as not to disturb the covering on the upper wing surface..These cuts should free up the wingstructure enough to allow a slight twist to be imparted and thus provide washout. This can be pinned to a jig while the ribsre glued in their ( slightly)new positions.. Some recovering of the lower affected panels will finish the job. ( I hope ?! ).
If you know of another (s) way of doing this , I would love to hear from you.
Cheers,
MERLIN MAN.