I had a little over 12 months of interval testing to back up the previous estimate, and then *poof* it step-function changed on me. It was almost as abrupt as the time I changed meds a long while back. Still not out of the question though. Maybe if it doesn't drop back down when I go indoors, I'll just consider the old estimate erroneous. Whatever it is, the old number is clearly wrong now, last long ride I had gave me nearly 2hrs in zone 5/redline which just can not be right. lol.
http://www.sportstracklive.com/track...ycling/1182636
nb.. before anyone heckles my speeds, its a hybrid with a touring load, full paniers, about 100lbs...