It is possible that electroweak symmetry might be broken dynamically by a condensate of top quarks. We extend a previous study of top quark dynamics to include the bottom quark. The simultaneous gap equations in dressed ladder approximation for∑ t (p),∑ b (p) are studied numerically and analytically in various regions of parameter space, and the solutions are used to determine $$\langle \bar tt\rangle ,\langle \bar bb\rangle $$ and the decay constantsF ±,F 0, as well as the top and bottom masses. We discuss the question of fine-tuning, and show how our approach can be extended to other quark and lepton masses.