Roller cam/lifter problem

stumblinhorse said
So I am confused. What was said is that Flat Tappet makes more power? Then what was said is that more aggressive ramps are the reason.

First I assumed you meant Hyd flat tappet. So I guess @moper you were talking solids? But I thought even solid FT lifters could only go so fast on ramps without the edge digging into the cam. That rollers, solid or Hyd, could have more aggressive ramps than FT. So I am wrong? and a solid FT cam can be more aggressive ramps than a Roller?

The initial opening of the valves with a FT is usually quicker but the overall opening rate with a roller can be a bit higher, at least that's my understanding. I think where @moper is going is that the potential overall quicker ramp rates of a roller cam are negated by the increased weight and hydraulic lifter plunger collapsing at higher RPMs with a hydraulic setup; to really get the benefits of a roller cam design you need to run solid lifters... I think? lol