Larry, The glider boys have found that if you matt your wing the drag is appreciably less, hence before a contest you see all these fellows flatting there wings with water paper. No one has explained this to me satisfactorily, has anyone heard a plausible explanation Cheers John
>> polished to a mirror finish. Given the same engine and fuel > flow, they got an extra 30 knots. If you want speed, think glass smooth > paint, > >