We report robust calculations of various low energy QCD hadronic prope
rties. We use a multi-rank separable expansion for the gluon propagato
r which greatly facilitates the numerical. computations within the Glo
bal Colour Model for QCD. The parameters for the propagators are deter
mined by fitting experimental values for f(pi) and the pi and alpha(1)
meson masses. The extracted gluon propagator is compared with the res
ults of lattice studies.