  We have carried out computer simulations to study the effect of merging on
the fundamental plane (FP) relation. Initially, systems are spherical Jaffe
models following a simple scaling relation (M/R_e^2 = constant). They have been
put on the FP by imposing different M/L values. Various orbital characteristics
have been considered. Our results show that the merger remnants lie very close
to the FP of the progenitors. Although non-homology is introduced by the
merging process, mergers among homologous galaxies leave a pre-existing
FP-relation intact. As a side result we find that variations in the point of
view lead to non-negligible scatter about the FP.
