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    One of the first series of tests I did years ago...

    One of the first series of tests I did years ago was on differences in (my) clothing. That was shocking. I haven't bought a "club fit" jersey since then. Except on the very coldest of days I don't...
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    So you went from 20 mph at 235 watts to 21.3 mph...

    So you went from 20 mph at 235 watts to 21.3 mph at 185 watts. 50 watts lower for 1 mph faster. Nice improvement.

    Retul will tell you what's biomechanically correct and comfortable but it can't...
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    Nice improvement. What'd you do different?

    Nice improvement. What'd you do different?
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    That tool assumes that CdA is constant and that...

    That tool assumes that CdA is constant and that you're not using your brakes (so that it can take account of all the forces that need to be balanced). In this case you probably used your brakes at...
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    Yeah, in road races the "effective" CdA can be...

    Yeah, in road races the "effective" CdA can be quite a bit lower than in crits so I wouldn't freak Zedmor out by having him think that's common in a 4-corner crit; that said, 175 watts for 27.5 mph...
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    CdA matters less in crits than in TT, I was using...

    CdA matters less in crits than in TT, I was using it in this case to point out that your overall effective CdA before you got dropped was still pretty high -- that's a diagnostic that you weren't...
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    OK, the 291 watt effort for 27 mph means your CdA...

    OK, the 291 watt effort for 27 mph means your CdA in the pack was ~0.25 m^2. For the pack, that's kinda high -- you should've been hiding more. The 235 watt effort for 20 mph means your CdA while...
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    27 mph on 291 watts with cheap tires in a crit...

    27 mph on 291 watts with cheap tires in a crit isn't bad. The bad part is 235 watts for 20 mph.

    How was the 291 watt effort different from the 235 watt effort? Were they both crit races, or was...
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    Close. Rating of perceived exertion. The most...

    Close. Rating of perceived exertion. The most common is Borg's 20-point scale (though there's also a 10-point version -- use whichever but whatever you use, stay with it). The 20-point scale is often...
  10. Thanks for clarifying your use of "efficiency." I...

    Thanks for clarifying your use of "efficiency." I was puzzled.
  11. How do you measure your efficiency dropping when...

    How do you measure your efficiency dropping when cadence changes?

    I would have thought that being a bike messenger and touring would have been situations where riders used wider, not narrower,...
  12. That's interesting. I know many road cyclists who...

    That's interesting. I know many road cyclists who pay attention to cadence but I don't know many who are quite as focused on it as you (or, at least, who admit to it). How wide is the "range" in...
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    Careful measurement trumps perception.

    Careful measurement trumps perception.
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    Oh, if you have a PT then do powered runs.

    Oh, if you have a PT then do powered runs.
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    That's pretty steep. When the hill is steep you...

    That's pretty steep. When the hill is steep you attain terminal velocity pretty quickly, no matter what your initial velocity is. Shallower hills let you get good separation between runs with a low...
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    Soap box derby type hills might be too steep and...

    Soap box derby type hills might be too steep and featureless. A slightly shallower hill with a change in slope (like a flattening or a dip and recovery) can be better -- but calm conditions trump...
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    No one's perfect.

    No one's perfect.
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    It's slightly more complicated than that. No one...

    It's slightly more complicated than that. No one needs more accuracy than they can use -- the problem is that most people don't know how much accuracy they need or will use in the future, so they...
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    That's not a useful distinction. Every power...

    That's not a useful distinction. Every power meter on the market senses something that's converted into force. The "direct force power meter" is a neologism iBike created in order to differentiate...
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    Have fun. You'll find that your RPE is quite...

    Have fun. You'll find that your RPE is quite different. If you don't already, keep track of that.
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    Do you have any experience with other power...

    Do you have any experience with other power meters, or will you be riding (and recording) the data with another unit?
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    Thanks. I couldn't find that on their website. ...

    Thanks. I couldn't find that on their website.

    What I did find on their website was that they justify their app by examining 14 year old files taken from my webpage, uncredited, comparing a...
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    How much does it cost? When it was first released...

    How much does it cost? When it was first released it was something like $120, which is a lot for a phone app. I've looked on their website but I can't find what the price is -- they only say that...
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    ^ This. There are ways that a power meter...

    ^ This.

    There are ways that a power meter might be able to make you faster, especially if you're doing TT or Triathlons on that DA -- but you were only asking about training and pacing. For...
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    If those are really your needs, then your needs...

    If those are really your needs, then your needs aren't very demanding and almost any power meter, including the Newton, would probably be okay. The iBike is a reasonable, if relatively expensive,...
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