  We study in detail the transport properties of a model of conducting
electrons in the presence of double-exchange between localized spins arranged
on a 2D Kagome lattice, as introduced by Ohgushi, Murakami, and Nagaosa (2000).
The relationship between the canting angle of the spin texture $\theta$ and the
Berry phase field flux per triangular plaquette $\phi$ is derived explicitly
and we emphasize the similarities between this model and Haldane's honeycomb
lattice version of the quantum Hall effect (Haldane, 1988). The quantization of
the transverse (Hall) conductivity $\sigma_{xy}$ is derived explicitly from the
Kubo formula and a direct calculation of the longitudinal conductivity
$\sigma_{xx}$ shows the existence of a metal-insulator transition as a function
of the canting angle $\theta$ (or flux density $\phi$). This transition might
be linked to that observable in the manganite compounds or in the pyrochlore
ones, as the spin ordering changes from ferromagnetic to canted.
