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  • Warwick

    Hey I’m the same weight and height as Andre Griepel! Sadly thats where the comparison ends :-(

    Again, great article love these data comparisons.

    • Cameron Harris

      Have you got a bike? He’s got a bike too!

      Don’t sell yourself short!

      • jules

        shave your legs and the resemblance becomes uncanny!

      • Warwick

        I do! Thanks, I’ll send Lotto-Suodal an email tomorrow.

    • cthenn

      Well if you got the same size legs Greipel does, you’re already a winner in life.

  • jules

    that normalised power by Greipel is other-wordly!!

    370w NP for 5 hrs 40 mins. and he is categorised as a sprinter!

    • Warwick

      And still managed to put out over 1000w for 30sec at the end too!

    • JasonM

      I wonder what effect the cobbles have on the actual measurements from the power meters? I had a quick search on dcrainmaker.com and most of the issues he had in his testing were drop outs, though he is a triathlete so can only put out 270W max in a sprint! But from my experience you can have the opposite – quite large readings higher. With 20% of the race on cobbles I wonder if that number is skewed to the upside a bit. And Strava have smoothing in their plots so hard to see if there is any errors.

      • jules

        they all seem to run smoothing algorithms I think. I don’t know what effect the cobbles would have, but I suspect not that great – the shock loading is fairly cushioned by the time it reaches the PM strain gauges in the cranks.

      • mrp33p3rs

        just thinking out loud here but unless the rear tires were constantly skipping and slipping, theres still constant traction and thus resistance at the pedal where maximum strain can be properly registered. maybe in the course of a stroke or fractional stroke the vibration might minimally or momentarily reduce the applied force, i think when all said and done the measurement should be whole

      • John Murphy

        Just need to compare it to other one day classics. Unlike a world tour stage, these are all-out 100% efforts without regard to energy saving for the next day.

        Strava generally doesn’t do any smoothing and uses the raw data from the head unit.

        270W is nowhere near his max sprint unless he’s a child or severely disabled.

      • Superpilot

        I think the argument is that if the power meter is calibrated, and it measures a watt, then it is a watt.

        If you think about how the cobble might put an instantaneous increase or decrease in power through because the bike is jumping up and down, then your legs are still resisting that as well as adding regular pedalling power, so in theory your body has supplied it to the back tyre.

        So, if your power meter measured a spike, then in theory it is actually an accurate spike.

        What may occur is some meters may have variations in terms of their ability to deal with rapid changes in strain at the gauges (overshooting/undershooting).

        I think in a race like Roubaix, and over so much of a distance, you may have overshooting, but it will average out over the amount of time on cobbles to be an insignificant amount of time where the reading may be inaccurate.

        I mean, say at a point in time you are pedalling 350w and a sudden bump adds 5w of rolling resistance, adding additional flex in the crank or pedals, if the power meter shows 355w, your body is providing the full 355 in order to continue at the same speed by overcoming the additional resistance. You get a power spike up, returning to normal after the resistance is passed.

        If your body absorbed that 5w through a flex in the joints or something, the crank would show 350w, but your speed would slow slightly. You get no power spike, but a drop on speed.

        If you are tired and unable to continue to push your 350w, it might reduce your output power, maybe? Power shoots down, as does speed, and only recovers if you can supply the force to re-accelerate.

        So I think the measurement of the power meter is still correct.

        There may be a gap in the window of measurement of the device (i.e. only takes snapshots of measurement in millisecond windows), but what it measures should still be accurate.

        And a waffle idea for the end of my working week – if say a downhill mtb’er had a power meter on his bike, and wasn’t pedaling, theoretically when landing from jumps etc the power meter would be measuring strain in the cranks or pedals. As the weight of the rider bears down they do in fact load the cranks or pedals with their weight, and their legs and bodies must resist that force, so they are providing that work, just not in the common pedaling sense.

        Theoretically with the cranks in a static 3 oclock 9 oclock position through a rock garden the crank would measure power spikes all the way through.

        Presumably this would also be in the opposite direction to what is ordinarily measured on the backward facing leg (which is usually pulling up and over the top rather than being stood on in the opposite direction).

        BUT, the wattage measured in these instances is actually still an accurate measure of the force the body is resisting to stop the body from passing through the bike. You could reduce this force by sitting down, but that would also reduce the measured wattage as well, as the legs would be doing less work to hold up the body.

    • Andy B

      I think he just makes poor choices on when to attack.. more successful as a sprinter
      Is actually a motorbike

  • jstevez

    Those number clearly demonstrate why they are called World Tour Athletes, really impressive.

  • cthenn

    All these numbers are super impressive, but note, the sustained efforts for any length of time seem to peak out just over 4 W/kg. Now imagine those climber types, who can do 6 W/kg for a 30-40 minute climb! That’s almost disturbing.

  • Cannondaler

    Nerdy point to make: The moniker “The Hell of the North” was not originally referring to the toughness of the race but rather the fact that the entire area was devastated during the war and literally looked like a hellscape.

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