>measure
>the angles at the door sill, .5 deg out, level across the back of the seat .8
>out. So now I have to re-shim the cradle. I set the incidence 2.5 perfect.
>Then
>in the morning I found the center of the earth had moved .2 deg. Every thing
>is even but off by .2 deg So I have 2.7 deg angle of incidence.
Correct and most important place to have the incidence accurate and equal
is the outer end of the flaps. This is the bit which will cause a built in
roll. !/2 a degree at the root tells you nothing unless you are certain the
wings are identical, (which is near impossible).
I always recommend check the first wing at the root, then set the second by
checking at the outboard end of the flaps. This is the traditional way the
glider boys do it.
Graham
|