I am going build a new spring pack for the rear of my flattie, what sould be the optimum angle for the rear spring shakles? I will be going with a longer main leaf that is the basis of this Q

The angle of the dangle.
is congruent to the mass of the ass.
provided the heat of the meat is perpendicular .

Here is the real angle of the dangle.o!o

45* at rest.