Does this prove David Vizard's 128 lsa formula ?

Ant,

There is a 30 min video by the Cattle Dog Garage. [ Not the 1hr + video ]. Odd name, I know....
He tests the 128 rule with multiple cams....& verifies it works.
What a lot of people do not seem to realise....is that the LSA is telling you where the valves are at max lift. Common sense tells you that max air flow into the cyl is going to be close to, or at max lift. A cam with a 110 LSA installed straight up has the exh valve at max lift 110* BTDC & the int valve is at max lift 110 ATDC. Why is that important? On the intake stroke [ more importantly at low & medium rpms ], the depression [ suction ] of the piston going down the more draws in the air....to make HP on the power stroke. Piston moves quicker, pulls more air all else being equal. When is it quicker? Piston speed is zero at TDC & BDC, but quickest somewhere in between. Where in between? The calculation for mean [ average ] piston speed is a simple one. But the calculation for piston speed at a given crank angle is more complicated & involves sine function.
I suspect there is a correlation between max piston speed & max [ or near max ] valve lift & that evolved into the 128 rule.