I'm no expert either. But looking at other coasters (like Red Force) it takes not only speed but track length to accelerate to 90+mph to crest that high. I don't think either are present here.Oh, I totally agree you need speed. My point was I think the number 78 is BS. Between the speed gained from the drop on the spike plus that huge accelerator I think, I am no expert, but I think it is probably possible.