damon_rinard wrote:
Hi Mark, I agree with you. We discuss grams of drag internally because that's what the wind tunnel measures, but grams sometimes don't mean much to typical riders; what if you're taller or smaller, faster or slower?
Like you, I'm leaning towards Watts as the common currency. But that requires a lot of assumptions - tunnel test speed, rider size and riding speed, etc.
Then there's time saved - but also requires assumptions about race conditions like distance and duration, and how much climbing and drafting there is.
Its not easy to describe aero effects simply.
All of which I guess is an argument in favor of CdA... Dang, would that make Tom and Robert right again?
Nevertheless I think I can look up the data that should answer your question.
Thank you for looking it up and sharing what you find. I assume it would be very useful to the end user. Of course there can there can be many differences- but I should assume that you made the above differences identical on both frames- hence a valid comparison is yielded.