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  1. Thread: Max speed

    by RChung
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    What a coincidence. The current world female...

    What a coincidence. The current world female record is 46.882 km/h. For an hour.
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    Oh, that. I've already said what I know to be the...

    Oh, that. I've already said what I know to be the case (as verified by examining data collected from a power meter) about cadence: it's a red herring.
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    If you had a power meter already (and that was...

    If you had a power meter already (and that was accurate at a wide range of different cadences) you'd know the answers to your questions.
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    Cadence isn't a finite resource. It's a red...

    Cadence isn't a finite resource. It's a red herring.
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    I agree. There are lots of legitimate use cases...

    I agree. There are lots of legitimate use cases for a power meter, being able to talk watts with the cool kids is one of them, and you don't need high data quality to do that.
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    For these kinds of things, check your sensors...

    For these kinds of things, check your sensors first: both your speed sensor and your power meters. GPS speed can be off (though in your case the error seems too large to be attributable to that), so...
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    You're on the right track. This is a bike forum,...

    You're on the right track. This is a bike forum, not a stat forum, so I don't want to get too technical but traditional statistical inference (as Fisher and Neymann laid out) is about testing...
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    Of course not. I'm saying that if you know what...

    Of course not. I'm saying that if you know what you're doing you don't have to do the repetitions or statistical inference in the way you've described. This is more about knowledge of experimental...
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    Actually, stat isn't the bane of my existence,...

    Actually, stat isn't the bane of my existence, nor do I ignore it. I'm a professor who teaches it. If you know what you're doing, you don't (necessarily) need to do many repetitions or significance...
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    1. Yes, depending on wind, and how you used your...

    1. Yes, depending on wind, and how you used your power during the rides, that's possible. It's also possible that your power meters or speed sensors are off.

    2. If you really want to know, check...
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    I'm not aware of anything in general. That is,...

    I'm not aware of anything in general. That is, from an empirical point of view, non-zero yaw is pretty individualized and the eyeball turns out to be pretty bad at precision in quantitative...
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    Happy New Year to you, too! Both rides, same...

    Happy New Year to you, too!

    Both rides, same route.



    Autopause
    TotalTime
    MovingTime
    Mean Kph
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    Well, that's interesting. My a priori guess was...

    Well, that's interesting. My a priori guess was that as long as I wasn't stopping for coffee, the effect of traffic lights and stop signs would be relatively small but I thought I should check to be...
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    Good point. I haven't used a HR belt for years so...

    Good point. I haven't used a HR belt for years so I tend to forget about it. From the point of view of power and speed, as long as you have the time stamp (so you can identify gaps) recording the...
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    That's interesting. I don't use either a Garmin...

    That's interesting. I don't use either a Garmin or TrainingPeaks so I didn't know that. I'll have to think about what the consequences of that are.
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    Very nice. Thanks. What happens when you turn...

    Very nice. Thanks. What happens when you turn autopause off and stop for, say, a minute? Do you get a minute's worth of zero power and speed?
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    Hmmm. Could you look at the data downloaded from...

    Hmmm. Could you look at the data downloaded from one of your rides to see whether power and speed are recorded as zeros when you stop at a stoplight? I've seen data files collected from Garmins where...
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    As you say, it depends on what you're focusing...

    As you say, it depends on what you're focusing on. I don't use a Garmin so I'm not quite sure what "Autopause" does but I *think* it mostly affects what's displayed on the head unit's screen in terms...
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    Almost. The inertia is what keeps you rolling...

    Almost. The inertia is what keeps you rolling down the road (or resists your change in speed when you accelerate). The crank inertial load is the feedback you get through the cranks and pedals, and...
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    I suspected that when you mentioned your quads as...

    I suspected that when you mentioned your quads as the problem. 2x20's are really designed to develop your aerobic system, and the TSS you get accrue from that shouldn't be so great that you'd be...
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    You doing the testing and the 2x20's on the road,...

    You doing the testing and the 2x20's on the road, or on a trainer, or a mix?
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    Right, we pointed this out back in, oh, 2003. A...

    Right, we pointed this out back in, oh, 2003. A less convoluted example is when you do two workouts a day, such as when you commute. This observation was the genesis of a long argument of when to...
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    Coggan says he first started with the idea of the...

    Coggan says he first started with the idea of the PMC, which was a way to think about the balance between "fitness" and "freshness." So he needed a way to quantify training load or training stress,...
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    Yup. TSS is a summary, sort of a short-cut to...

    Yup. TSS is a summary, sort of a short-cut to understanding the quantity-quality trade-off. Over time I've figured out what kind of TSS volume I can sustain, and the boundaries on quality (IF) and...
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    I do.

    I do.
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