Gear inches is development divided by pi, in imperial units. It's the diameter to development's circumference.

Even if the wheel is symmetric, the tire may not be

I don't think the TLDR answers the question- aero hoods are the most efficient position because people put their handlebars at the height which makes aero hoods the most efficient position. The question is "why are bars at that height?" Your direct answer is that when raising the bars, "you compromise on aspects like lower center of gravity or your general bike fit..." So do we need a lower center of gravity than the "aero drops" position in the question gives?

Do we optimize hoods because it's the most used position, or is that the most used position because it's the one we optimize?

Do we want to ride even lower in the drops position than the "aero hoods" position? Or do we want straighter arms in the drops position?

I'm comparing a bike to a bike that is identical in every way except the handlebars are higher. No regard to what the different geometries are conventionally called.

Hi, you've posted this as a question- do you have a question? If this is important information for your other question, you may edit that question- if it's just for fun, you might find someone who wants to chat in the chat room. This is meant to be a Q+A site rather than a discussion board.

In the mean time, I've been able to modify this derailleur to cleanly reach the large chainring- at the expense of massive chain rub in the small chainring.