 Fast downhill turnsin Mountain Brook |
 One of the fastest decelerationspots 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.
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- Fast downhill turns in Mountain Brook. The arrows all point at downhill turns.
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- One of the fastest deceleration spots in town. You are still carrying about 50mph on the turn which pitches up above 20% taking you down to 5mph in very short order (maybe just 2 to 3 seconds).
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- The satellite signal on the S Cove Dr corner is usually surprisingly accurate, I think it’s because I brake so hard before the corner that it gives the satellite just enough chance to catch up!
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- S Cove neighborhood, turned sideways
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- It’s always fun to hit 7000 ft of climbing before the distance ticks over to 40 miles.
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- Difference between 10 mile and 1.5 mile horizontal axis – the rollers get hidden on the zoomed out 10 mile scale.
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- Difference between 10 mile and 1.5 mile horizontal axis – the rollers magically appear on the zoomed in 1.5 mile scale.
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- Nearly complete elevation profile
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- Max speeds – garmin only displays 6 at a time so I copied and pasted the first one from a separate screenshot
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- Ride starts, part 1
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- Complete ride stats, part 2 – the max speed is off by about 5 mph. Hit 58 or 59 on the S Cove descent, but the 64.6 is a miscalculated speed from the RTB roller coaster
Cycling Adventures with Brian Toone 