Stem Length
 

On a road bike, when you are on the hoods and you look down, should your handlebars block out the front hub? or seem to be in front of the hub? or behind the front hub? How do you have yours set up?

If I'm sitting up with my hands on the hoods, I can see the front hub behind the handlebar. If I bend down to be more aero, or move my hands to the drops, then my bars pretty much obscure the front hub.