tag:blogger.com,1999:blog-1564958057737541664.post1496893902844271937..comments2024-02-14T17:11:22.168-08:00Comments on On Bicycles, and.... what else is there?: Powertap torque testdjconnelhttp://www.blogger.com/profile/01484858820878605035noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-1564958057737541664.post-61238686337124093392010-05-14T13:30:28.471-07:002010-05-14T13:30:28.471-07:00Exactly: hill climbs work okay if you have an accu...Exactly: hill climbs work okay if you have an accurate measure of total weight at the time of the climb, a decent estimate of the coefficient of rolling resistance, and have a validated estimate of CdA ρ for wind resistance estimation, and there's not too much wind, and your speed is sufficiently uniform (the road grade is sufficiently steady).<br /><br />A well-calibrated power meter is much better.<br /><br />Still have to test the retuned Powertap Saris sent me: on my to-do list. They have great customer service. But I've enjoyed not having annoying power numbers tell me how unfit I am after every ride.djconnelhttps://www.blogger.com/profile/01484858820878605035noreply@blogger.comtag:blogger.com,1999:blog-1564958057737541664.post-52571389107900412842010-05-14T12:09:21.864-07:002010-05-14T12:09:21.864-07:00I got to this post wondering why, during a computr...I got to this post wondering why, during a computrainer workout, my interval wattage dropped 10 watts between intervals 3 and 4 of six, as measured on the powertap wheel I was using. After reading your post, I think what happened is that when I stopped and got off the bike to pick up my ipod, the stoppage caused a torque "anomaly" that affected the rest of the workout.<br /><br />How FAST you can climb the old local hill then is the real measure of your power. Unless your tires are soft, or you weigh more, or it is windy, or cold, or...Buzzchuckhttps://www.blogger.com/profile/16213793622106973465noreply@blogger.comtag:blogger.com,1999:blog-1564958057737541664.post-24251849742178139052010-02-24T01:04:26.701-08:002010-02-24T01:04:26.701-08:00I have worked with powermeters for a long time, ma...I have worked with powermeters for a long time, mainly SRM, I have developed calibration methods that I can use in the field, I have travelled with our Olympic team to verify SRM calibration at events, etc etc. The one thing I keep coming back to is that this data is NOT absolute and unless you pay very close attention to how you manage things the data may not even be relative. It is the old story of the more you know, the more you realise you don't know.Unknownhttps://www.blogger.com/profile/03412561521490228698noreply@blogger.com