Originally Posted by drac1

I don't fully understand either, (and not really that interested), in how to measure using formulas, but it can be done. Everything can be measured/calculated these days, without actually having to make/build or physically set up something to find out how it will perform. Pretty much any variable can be allowed for in the calculations to simulate different scenarios.

I still think that performance in the real world may be slightly different, but calculating first puts it right in the ball park without the expense and time involved in manually doing it.

As many of us have found in the past, theory is all well and good, but how something performs in the real world will be the final test.