tag:blogger.com,1999:blog-1564958057737541664.post5312285447689112561..comments2024-02-14T17:11:22.168-08:00Comments on On Bicycles, and.... what else is there?: Wednesday Noon ride and Strava timing accuracydjconnelhttp://www.blogger.com/profile/01484858820878605035noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-1564958057737541664.post-26841714067608282082011-08-26T10:40:23.871-07:002011-08-26T10:40:23.871-07:00If you assume drafting saves 30% of power, and if ...If you assume drafting saves 30% of power, and if I'm riding Old la Honda about 43% the speed I could ride on the flats with zero-resistance tires in the same position, then I'm saving around 30% of 8% = 2.4% of power which would save 2.1% of speed or 22 seconds per 18 minutes multiplied by fraction of time drafting, assuming the other rider is going the perfect pace.djconnelhttps://www.blogger.com/profile/01484858820878605035noreply@blogger.comtag:blogger.com,1999:blog-1564958057737541664.post-53677409946367550202011-08-26T09:30:09.964-07:002011-08-26T09:30:09.964-07:00Dan - Thanks for this interesting post and the exc...Dan - Thanks for this interesting post and the excellent blog. Here's a question - have you ever tried to quantify, either theoretically or empirically, the effect of drafting on Old La Honda times? I've poked around on the web a bit for a good drafting calculator but come up empty. I know you once wrote that even light wind effects could have about a 20 second impact on OLH times. I'm guessing a good draft is worth about 10 seconds on an 18-20 minute time, but that's just a guess. Do you have any thoughts?Mark S.https://www.blogger.com/profile/00255510805056155870noreply@blogger.com