Yeah, pretty much. Bicycle frames are basically completely rigid vertically, as far as the forces that are normally encountered is concerned. The only possible

Yeah, pretty much. Bicycle frames are basically completely rigid vertically, as far as the forces that are normally encountered is concerned. The only possible source of vertical compliance are the tires and the suspension, if there is any. Some frames may be more or less laterally or torsionally compliant, but I'm skeptic that either makes much of a difference while riding.