Providing any figure arrived at is achievable by a good engineer, it should not be a problem. There should be no issue with a system that rewards good, efficient and safe engineering.
My thought was more along the lines of the inevitable % loss that everyone suffers in their drivetrain. I have no idea how to quantify this, but am very aware that in our case the calculation of theoretical figures is usually tragically inaccurate ;(
Losses due to our standard of engineering are our own problem and no-one elses. Subject to common sense safety concerns of course.
Regards
Tim Jones
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