Sir your info is exactly what i am trying to find .. I believe we fall in the same catagory .. a non racer but one who still likes to push themselves to get a bit faster without really hurting ourselves .. I ride mostly indoors on my Compu trainer and ride at about 120 to 180 watts sustainable .. when I get into to 220 -240 watts my Heart rate will reach 158-162 obviously not for very long though .. I would love to see more of your charts and those of the other guys I saw riding in your garage .. thanks again Glenn in Phx.