Posts tagged ‘garmin’

Chased by the satellites

Fast downhill turns
in Mountain Brook
One of the fastest deceleration
spots in town

Yesterday I put my race wheels on my bike to get ready for the River Gorge races this weekend. I have a hard time getting a wheel speed magnet to stay on my front race wheel, so most of the time I run my race wheel without a speed sensor. The Garmin is usually pretty accurate in calculating speed from satellite measurements. But if you pick the right route with really fast, sharp turns you can play a game where you are trying to outrun the satellite signal. You can get some crazy max speeds as the signal catches up to you. Once I managed to hit 80mph on a 55mph descent. On today’s ride that same descent registered as 64.6mph, when the actual speed was probably closer to 53mph. Here are some annotated screenshots from today’s ride.

August 24, 2012 at 1:59 pm Leave a comment


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Lots of climbing via double oak rollercoaster repeats. Caution bham cyclists ... I flatted halfway down Hugh Daniel descent today - don't know if there is something in the road so be careful! This pic doesn't have anything to do with that other than Hugh Daniel is the gap in the middle ridge line. 10000 ft of repeats on double oak. Started my repeats with 3000 ft of climbing already in the ride. Love that there is a railroad tie at the steepest part of the climb on the tower side. Finally, the tracks may be hard to see, but there are a bunch!

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AT power estimated by critical power curve in Golden Cheetah, which predicts I should be able to maintain 315 watts for 1 hour.

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