Tour de France What gearing do they have to ride at 40mph to 45mph on the flats?
I have a compact 11-18. I was in my 11 going down a slight hill, my cadence was 110 and I was going 35mph. How could you go 45mph on the flats?
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53-11 and 120rpm gets you 45.2mph. You need a boatload of watts, and low aerodynamic resistance.
Edit: The velominati calculator says only 114rpm: http://www.velominati.com/about/cadence-calculator/ |
There is the shared aerodynamic reduction of being the middle of the Peloton, too
taking turns, top teams, they all pull at the front , changing team members.. |
Originally Posted by fietsbob
(Post 14437129)
There is the shared aerodynamic reduction of being the middle of the Peloton, too
taking turns, top teams, they all pull at the front , changing team members.. |
Originally Posted by AzTallRider
(Post 14437173)
Of course. Nobody can do 45mph for any significant duration. Nobody. It's a pretty quick rotation at those speeds. Well, it's not even a rotation. It's guys giving everything they have for a brief moment, then pulling off to be swarmed and dropped. Very few people can hit 40 on the flat without assistance. I know I can't, even with a little hill to get me up into the 30's without draining myself. It's something I practice, and while I've improved, I still max out well under 40.
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Methinks the engine, not the gearing is the key. For I hath the gears, but, alas, not the engine.
I have sped at 42 only once, downhill, squeezing brakes and spraining my puckerstring. Can't even begin to imagine 42 from pedaling. I've done 30, but it dinna last long. |
The pros can also get gearing that we don't usually see. I read Greg Lemond used a 61 tooth chainring for a TT.
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Originally Posted by big john
(Post 14437563)
The pros can also get gearing that we don't usually see. I read Greg Lemond used a 61 tooth chainring for a TT.
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Originally Posted by AzTallRider
(Post 14437053)
53-11 and 120rpm gets you 45.2mph. You need a boatload of watts, and low aerodynamic resistance.
Edit: The velominati calculator says only 114rpm: http://www.velominati.com/about/cadence-calculator/ |
Originally Posted by AzTallRider
(Post 14437053)
53-11 and 120rpm gets you 45.2mph. You need a boatload of watts, and low aerodynamic resistance.
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Greg - where can one d/l that data? Thanks!
Edit.... Found some data at http://connect.garmin.com/teamgarmin |
Tyler's stage 2 http://connect.garmin.com/activity/195049427
Team Garmin data http://connect.garmin.com/explore?owner=team-garmin |
Last year I tried to break fourty a couple times and think I got to something like 39.7 (downhill with tailwind). During a ride a month or so ago, I thought I had a chance with a strong tailwind at the top of a steep hill. I had to get a start at the top by bombing through a stop sign. I wasn't able to pedal above about 35, so I went into a tuck. By the bottom I was going 41.7. OK, I broke 40, so that's done, that's fast enough, and I don't think I want to set a faster goal!
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Originally Posted by gregf83
(Post 14437845)
...Tyler Farrar he averaged 36mph over the final 7 miles...
God! Averaging 36 mph for that distance - even with drafting help, that's an incredible pace! |
Originally Posted by david58
(Post 14437437)
Methinks the engine, not the gearing is the key. For I hath the gears, but, alas, not the engine.
I have sped at 42 only once, downhill, squeezing brakes and spraining my puckerstring. Can't even begin to imagine 42 from pedaling. I've done 30, but it dinna last long. +1 :thumb: |
Originally Posted by gregf83
(Post 14437845)
A downhill and Phil Liggett exaggerating your speed will get you there also. In yesterday's stage they were talking about the riders doing 45 and hitting close to 50mph in the sprint. But when you download the actual data from Tyler Farrar he averaged 36mph over the final 7 miles with a top speed of 40.4mph. He didn't win but he was near the front. The only way someone is riding 45mph on a tour stage is with a tailwind or possibly in the final 200m.
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i think the broadcast would be greatly enhanced with more speed, power, and cadence data in real time. i heard somewhere that Sagan topped 1200 watts on his stage win Sunday.
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Originally Posted by bassplyr
(Post 14438076)
i think the broadcast would be greatly enhanced with more speed, power, and cadence data in real time. i heard somewhere that Sagan topped 1200 watts on his stage win Sunday.
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Top Gearing on the tandem is 48/11 and at a cadence of 100 we can get 30 mph. Only for a couple of miles and the slightest upslope or headwind and it will be for less.
But we went for it once on the flat seafront at Eastbourne and saw 45 on the computer. That is a cadence of 150 and we were still pulling on the pedals. May have been a tailwind but it was flat and it hurt. I never want that cadence again. And although the computer is properly set up--we may want a more accurate computer. |
If people are interested in power data, Sky were publishing the Training Peaks data for Konstantin Siutsou during the Tour. Unfortunately, he's now out with a broken leg. But here's the summary data for Stage 1. Bear in mind he's a domestique, not a sprinter:
Training Stress Score: 288 TSS Energy: 4030 KJ Average Heart Rate: 120 bpm Max Heart Rate: 196 bpm Average Cadence: 87 rpm Average Watts: 195 W Normalized Power: 268 Max Watts: 914 W Peak 1-minutes: 571 W Peak 6-minutes: 453 W Peak 20-minutes: 356 W The detailed charts can be accessed via the link. The interesting thing here is how modest the average watts and average heart rate are. Sheltered in the peloton, he's riding most of the stage (average speed 25mph) in his recovery zone. Plenty of power there if he needs it, though. He weighs 68kg (150lbs) so at 356w for 20 minutes at a time he'll have been comfortably under his threshold, I should think. As for gearing, I don't think anybody will be riding anything bigger than 53-11 other than in the TTs. |
Size matters......the size of the group you ride in. Unless your name is Fabian, then you can do it alone.
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With a big big gear and no wind resistance the speeds can get high. It has so much to do with the wind.
Sports cars can get to 100 without much trouble, but it takes alot of horsepower to push the car to faster speeds due to the wind. |
Originally Posted by skinewmexico
(Post 14438315)
I heard that too. Actually, I heard he averaged 493 watts over the final 2 minutes, with a peak of 1200+.
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Originally Posted by chasm54
(Post 14438480)
... As for gearing, I don't think anybody will be riding anything bigger than 53-11 other than in the TTs.
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Originally Posted by John E
(Post 14438774)
Yes, I believe 53-39/11-21 is typical default gearing for most TdF riders. I don't know what I would do with an 11- or 12-tooth cog, but I am an old school spinner who finds 30mph / 50kph fast enough.
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