I have put the initial post up in the wiki, it has been split up into 2 articles / wiki pages.
I have also made a new section "simulation and calculations", this is where we can put any tools used to simulate or calculate efficiency
Simulation and calculations - EcoModder
The new wiki pages are linked from this page
Robert you requested that the theoretical weight energy be removed, i am happy to do this when someone offers a better alternative that will allow people to calculate the effect of weight on efficiency. I have however changed the page so that it relates to braking from 1 speed to another which "wastes" inertial energy rather than acceleration. I am open to suggestions on how to "fix" this page if anyone thinks its wrong please feel free to correct it or send me a msg.