Quark and Gluon Propagators from Meson Data

We report robust calculations of various low energy QCD hadronic properties. We use a multi-rank separable expansion for the gluon propagator which greatly facilitates the numerical computations within the Global Colour Model for QCD. The parameters for the propagators are determined by fitting experimental values for $f_{\pi}$ and the $\pi$ and $a_1$ meson masses.