Original Posted By: Isablcorky(at)aol.com
Doug,You can measure the wing incedence easy, here's how; Since the incedenceof the wing is relative to the upper longeron, hold a straight edge piece ofwood up to the bottom of the wing. (Here in Texas I would use a 1"x4"board about 6 feet long. There I guess, use something yea X yea and 2meters long.) Any how, whilst you are holding the board up to the bottomof the wing, have someone measure the distance from the upper longeron tothe board at each of the board. Then work the right angle calculation togetthe angle of incedence.In this case, using a 2 meter board as one side of the triangle, then the 2deg.of incedence should equal: 69.8mm. So, the forward end of the 2 meterboard should be 69.8mm taller than the aft end of the board.Our Piet is not flying yet, but I'm going out to the field and will measurethethrow of the elevator just to give a rough idea of what we have, at least.Wow, one Piet with a 6ft longer wing, that should help you get off thegrounda bit quicker.While you are at it, check the elevator belcrank in the aft fuselage. Thecables going to the elevator at the belcrank should be 7 3/4" or 19.685centimeters apart. If it's longer it would increase the throw of theelevators.One way to reduce the throw would be to reduce the 19.685cm dimension.Good luck,RodgerPiet in progress________________________________________________________________________________