synthetic wrote:
yes i have times for my road bike vs tri bike efforts. it matters to factor in this when the equipment change is drastic in reducing times. 40s between two bikes on a 40km TT isnt much. 4 minutes is.
I used to be part of an running NGB and saw across the board the dramatic time improvements of these shoes. jack daniels tables getting screwed up. For instance that recent half WR set makes the person capable of a sub 40s 400m....
Right, ok...you keep talking about treating PR like a scientific experiment, but the question you're asking is "How fast can I do this distance under these conditions with this equipment?" which means the only variable you can change is yourself, through training. Fine if you want to think about it that way.
But that's not how 99% percent of the world thinks of PR's...we're all asking the question "How fast can I do this distance, period?" and to answer that question we can change all sorts of variables...equipment, clothing, nutrition, time of day, weather, ourselves through training, etc.
So in most peoples' minds, you don't have two different 40km PR's...you have two different times, one where you chose equipment better suited to what you were trying to do (go fast). The faster time is your PR. Congratulations.
You can think about your own PR's however you want, but expecting everyone else to measure their PR's by your obscure, self-imposed rules doesn't make much sense.