Dr C.,would I be right in thinking that you have calculated your efficiency at various trochanteric heights?
No, I just rely on the published literature.
If so,what’s the variation over the percentages?
Raising your saddle from 96% to 104% reduces efficiency by about 1% in absolute terms, i.e., for a given VO2 (and RER) your power would be ~5% lower.
Note that having a saddle that is too high is worse than having one that is too low, i.e., the relationship is not symmetrical around the minima.
If greater height is accomodated by change in ankle angle, mainly, and not the knee or hip,does it matter?
See above.
Would it be better to measure trochanteric height whilst wearing cycling shoes?
That is how Price and Donne did it.