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Search: Posts Made By: RChung
Showing results 1 to 50 of 1000
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Forum: Road Cycling
05-03-24, 10:24 AM
Replies: 59
Views: 853
Posted By RChung

Which video did you rewatch? How have you...

Which video did you rewatch?

How have you done your studies, and your comparisons?


Was elapsed time the thing you were measuring? How did you account for differences in wind or power?
Forum: Indoor & Stationary Cycling Forum
05-03-24, 09:04 AM
Replies: 16
Views: 367
Posted By RChung

Hmmm. There are methods to estimate total...

Hmmm. There are methods to estimate total elevation gain from power, time, and speed. You do need to know total weight and some assumptions about the tires you're using and the contribution of...
Forum: General Cycling Discussion
05-03-24, 08:50 AM
Replies: 3
Views: 77
Posted By RChung

This is what I was wondering about. The left...

This is what I was wondering about. The left pedal is the "master," the right is the "slave," and I was wondering whether you could separately slave a different right pedal (or left).


Right,...
Forum: General Cycling Discussion
05-02-24, 09:37 PM
Replies: 3
Views: 77
Posted By RChung

I don't have any experience with this model but...

I don't have any experience with this model but can you swap, say, the right pedal from your old set and pair it with the left, or vice versa?

You've done a static test (which is good) but the...
Forum: Road Cycling
05-02-24, 07:01 PM
Replies: 32
Views: 434
Posted By RChung

Lower gearing allows for lower maximum crank...

Lower gearing allows for lower maximum crank torque and lower minimum speed (before falling over), and thus lower power. Lower gearing isn't so much to make you climb faster, it's to allow you to...
Forum: Road Cycling
05-02-24, 06:35 PM
Replies: 59
Views: 853
Posted By RChung

I'd put handlebars between tires and wheels.

I'd put handlebars between tires and wheels.
Forum: Road Cycling
05-02-24, 04:38 PM
Replies: 32
Views: 434
Posted By RChung

An eighth of a millenium.

An eighth of a millenium.
Forum: Road Cycling
05-02-24, 02:27 PM
Replies: 32
Views: 434
Posted By RChung

https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/672x672/crr_vs_mass_c1c1ee2943760a08180fa8e5f7d0d64fd3a8f866.jpg
Forum: Road Cycling
05-02-24, 02:22 PM
Replies: 32
Views: 434
Posted By RChung

https://www.dangerousroads.org/north-america/usa/3...

https://www.dangerousroads.org/north-america/usa/3762-the-10-steepest-streets-in-america.html
Forum: Training & Nutrition
05-02-24, 08:06 AM
Replies: 15
Views: 868
Posted By RChung

https://youtu.be/dVXZh6oVhqI?feature=shared

https://youtu.be/dVXZh6oVhqI?feature=shared
Forum: Training & Nutrition
05-02-24, 06:59 AM
Replies: 25
Views: 555
Posted By RChung

Let's hope so -- a 15 watt discrepancy is pretty...

Let's hope so -- a 15 watt discrepancy is pretty big, and would affect zones and TSS estimates (not that zones or TSS estimates are that critical -- I'm just saying they'd be affected).
Forum: Training & Nutrition
05-01-24, 02:29 PM
Replies: 25
Views: 555
Posted By RChung

Thanks. So, if you rack up 745 TSS in 11h of...

Thanks. So, if you rack up 745 TSS in 11h of riding, it would mean you were averaging 745/11 = 68 TSS per hour of riding time. The way TSS is calculated means that your average "intensity" during...
Forum: Road Cycling
05-01-24, 02:17 PM
Replies: 59
Views: 853
Posted By RChung

Ironically, the improvement in speed from tires...

Ironically, the improvement in speed from tires works like climbing a hill: a reduction in Crr (the coefficient of rolling resistance) of .004 (=0.4%) has an effect on speed exactly like reducing the...
Forum: Training & Nutrition
05-01-24, 11:49 AM
Replies: 25
Views: 555
Posted By RChung

How many total hours on the bike do you do in a...

How many total hours on the bike do you do in a week to get about 700 TSS?
How many kcals (or kJ) is Strava saying you average across a week?
Forum: Training & Nutrition
05-01-24, 08:44 AM
Replies: 25
Views: 555
Posted By RChung

It's a little more arcane than that but that's...

It's a little more arcane than that but that's essentially it. So if 100 represents an hour at FTP, a weekly TSS score of 500 is supposed to represent 5 hours of riding at FTP. Terry occasionally...
Forum: Training & Nutrition
04-30-24, 06:37 PM
Replies: 55
Views: 1,758
Posted By RChung

Yup. You don't really need a PM to make...

Yup. You don't really need a PM to make relatively good estimates on a long steady hill. A PM's strengths show up when the course isn't steady and speeds and efforts are variable. Its value is larger...
Forum: Training & Nutrition
04-30-24, 02:50 PM
Replies: 55
Views: 1,758
Posted By RChung

It's a little simpler when climbing a steepish...

It's a little simpler when climbing a steepish hill because you don't have to worry quite so much about aerodynamic drag -- when climbing a steep hill, there's a rule of thumb that gets you close to...
Forum: Training & Nutrition
04-30-24, 11:23 AM
Replies: 25
Views: 555
Posted By RChung

Nancy Howell, an anthropologist who wrote the...

Nancy Howell, an anthropologist who wrote the definitive study on the nutritional strategies and energy expenditures of the Dobe !Kung of the Kalahari Desert, noted that teen males had high energy...
Forum: General Cycling Discussion
04-29-24, 09:51 PM
Replies: 63
Views: 1,452
Posted By RChung

https://cimg9.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg9.ibsrv.net/gimg/bikeforums.net-vbulletin/672x672/vam_at_constant_power_0fd4517dfbcac176a579d8edbdc50d2a03e09ed1.png
Forum: "The 33"-Road Bike Racing
04-29-24, 09:26 AM
Replies: 8,475
Views: 779,341
Posted By RChung

Coggan has said several times that the title of...

Coggan has said several times that the title of his book is "Training and Racing With a Power Meter" not "Training and Racing to a Power Meter."
Forum: Living Car Free
04-26-24, 09:35 AM
Replies: 8
Views: 419
Posted By RChung

In the city? We did, when the kids were little,...

In the city? We did, when the kids were little, but the city was Paris. When we moved back to the US, we moved to a place with a "good for US but not good for Europe" public transit system. The real...
Forum: Training & Nutrition
04-25-24, 03:48 PM
Replies: 55
Views: 1,758
Posted By RChung

There are many areas where Hunter and Andy have...

There are many areas where Hunter and Andy have agreed to disagree. That book is sort of "you write that chapter, I'll write this one, and we'll bind them up together." One pretty clear example is...
Forum: Training & Nutrition
04-25-24, 02:39 PM
Replies: 55
Views: 1,758
Posted By RChung

Umm, pretty sure that's not entirely so. Andy...

Umm, pretty sure that's not entirely so. Andy Coggan has repeatedly said that if you have power and RPE (and you always have RPE) then at best, HR is redundant; at worst, it's misleading.
Forum: Training & Nutrition
04-25-24, 12:32 PM
Replies: 55
Views: 1,758
Posted By RChung

[/b] I sorta have a love/hate thing going on...

[/b]
I sorta have a love/hate thing going on with the Aerolab chart.
Forum: General Cycling Discussion
04-24-24, 08:56 AM
Replies: 16
Views: 1,103
Posted By RChung

https://cimg0.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg0.ibsrv.net/gimg/bikeforums.net-vbulletin/500x282/94610da5407f9d8f898314471408ff32_e7f34f6042109cebdfaa364e098f128ca63924a1.gif

If you've been following the reports, the handwriting...
Forum: Training & Nutrition
04-24-24, 08:48 AM
Replies: 55
Views: 1,758
Posted By RChung

To be fair, I was faster in my forties than in my...

To be fair, I was faster in my forties than in my thirties but by my late forties I saw the handwriting on the wall and bought a power meter to assess how much power I was hemorrhaging. The PM helped...
Forum: Training & Nutrition
04-23-24, 03:52 PM
Replies: 55
Views: 1,758
Posted By RChung

I use power data to keep accurate and precise...

I use power data to keep accurate and precise track of my decline.
Forum: Fifty Plus (50+)
04-22-24, 09:19 AM
Replies: 105
Views: 6,824
Posted By RChung

We ride Zone 2 not to ride in Zone 2 but to...

We ride Zone 2 not to ride in Zone 2 but to prepare for not riding in Zone 2.
Forum: Fifty Plus (50+)
04-19-24, 02:43 PM
Replies: 105
Views: 6,824
Posted By RChung

When I finished my sister said to our mom, "Well,...

When I finished my sister said to our mom, "Well, now there's finally a doctor in the family," and mom said, "I didn't mean that kind."
Forum: Fifty Plus (50+)
04-19-24, 09:19 AM
Replies: 105
Views: 6,824
Posted By RChung

Not that there's anything wrong with that.

Not that there's anything wrong with that.
Forum: Training & Nutrition
04-19-24, 09:09 AM
Replies: 27
Views: 1,255
Posted By RChung

Yep. "The purpose of models is not to fit the...

Yep. "The purpose of models is not to fit the data but to sharpen the questions." TSS and the PMC don't fit the data all that well but they do sharpen our questions, and that has value.

I do use...
Forum: Training & Nutrition
04-15-24, 12:53 PM
Replies: 27
Views: 1,255
Posted By RChung

Just redefine your Zone 2 so it's really wide,...

Just redefine your Zone 2 so it's really wide, spend almost all your time in Zone 2, and avoid talking specifics with the Zone Nazis.
Forum: Fifty Plus (50+)
04-12-24, 09:46 AM
Replies: 79
Views: 2,702
Posted By RChung

Hmmm. If you have reliable cadence and speed...

Hmmm. If you have reliable cadence and speed sensors, you could measure the extent to which this occurs at different cadences.

We know that speed (in km/h) = cadence*60*gear ratio*wheel...
Forum: Fifty Plus (50+)
04-11-24, 07:52 AM
Replies: 79
Views: 2,702
Posted By RChung

Um, your first statement is wrong: if you are...

Um, your first statement is wrong: if you are maintaining power at constant cadence, pedal force is independent of increasing slope.

And your second statement addresses a different issue: if you...
Forum: Fifty Plus (50+)
04-10-24, 01:45 PM
Replies: 79
Views: 2,702
Posted By RChung

Of course decreasing cadence will decrease power...

Of course decreasing cadence will decrease power in the same gear if the slope is a constant. But if you are maintaining power as the slope increases then pedal force will increase at a constant...
Forum: Fifty Plus (50+)
04-10-24, 09:14 AM
Replies: 79
Views: 2,702
Posted By RChung

When you're lifting in the gym, does keeping your...

When you're lifting in the gym, does keeping your reps above 70 reps/minute prevent knee pain?
Forum: Fifty Plus (50+)
04-10-24, 09:11 AM
Replies: 79
Views: 2,702
Posted By RChung

Oh, I've looked at this, too, and I agree with...

Oh, I've looked at this, too, and I agree with it. But at the moment I'm fighting the "slow cadence hurts your knees" fight. Later on we can move on to the high pedal force fight.
Forum: Fifty Plus (50+)
04-10-24, 09:03 AM
Replies: 79
Views: 2,702
Posted By RChung

If you've run out of gears going up a steep...

If you've run out of gears going up a steep climb, then slow down. In that case, decreasing cadence will decrease, not increase, crank torque. (To be fair, crank torque in that case is almost...
Forum: Fifty Plus (50+)
04-10-24, 08:56 AM
Replies: 79
Views: 2,702
Posted By RChung

So what you're arguing is that torque is...

So what you're arguing is that torque is equivalent to torque??? OK, I agree with you on that.
Forum: Fifty Plus (50+)
04-10-24, 08:27 AM
Replies: 79
Views: 2,702
Posted By RChung

Stop right there. Power isn't equivalent to...

Stop right there. Power isn't equivalent to torque.
Forum: Fifty Plus (50+)
04-10-24, 07:20 AM
Replies: 79
Views: 2,702
Posted By RChung

Low cadence is a poor proxy for high force. I can...

Low cadence is a poor proxy for high force. I can pedal slowly with either low or high force. I can pedal quickly with either low or high force. Now that many of us have power meters, it's (way past)...
Forum: Fifty Plus (50+)
04-09-24, 10:28 PM
Replies: 79
Views: 2,702
Posted By RChung

Right now I'm sitting at my desk, my legs are...

Right now I'm sitting at my desk, my legs are moving at 0 rpm, and my knees aren't complaining. When you sit at a desk or table, do your knees complain?

I don't think the problem is low cadence.
Forum: Fifty Plus (50+)
04-08-24, 09:36 AM
Replies: 79
Views: 2,702
Posted By RChung

You know, there's a connection between cadence,...

You know, there's a connection between cadence, pedal force, and power. When you increase your power, *both* cadence and pedal force tend to increase (though not equally): your cadence doesn't remain...
Forum: Living Car Free
04-01-24, 08:26 AM
Replies: 27
Views: 2,934
Posted By RChung

The AP article was built from anecdotes ("many...

The AP article was built from anecdotes ("many riders seem to think rules don't apply to them") while the Le Monde article was based on data ("use of cycling lanes doubled in a year").

Anecdotes...
Forum: General Cycling Discussion
03-31-24, 08:10 AM
Replies: 54
Views: 1,886
Posted By RChung

For my own mechanical, 10 or 12 minutes. Anything...

For my own mechanical, 10 or 12 minutes. Anything more than that, I've either fixed or the ambulance came. I did walk 2 miles once but not really for me. I happened on a couple hobbling down the...
Forum: General Cycling Discussion
03-30-24, 09:12 AM
Replies: 43
Views: 1,906
Posted By RChung

My observation is that *most* road riders can,...

My observation is that *most* road riders can, through trial and error, eventually get themselves close to a good position -- but *most* TT and Tri bike riders won't.
Forum: Road Cycling
03-25-24, 12:32 PM
Replies: 68
Views: 2,351
Posted By RChung

Yep. Not always, though it depends on...

Yep.


Not always, though it depends on what you consider "many." If you do it right and you're lucky, maybe three runs of a couple of minutes each, for each tire combo. But it's easier to do...
Forum: Training & Nutrition
03-24-24, 03:01 PM
Replies: 98
Views: 4,076
Posted By RChung

Your concerns (about BMI, CVD, smoking, and race)...

Your concerns (about BMI, CVD, smoking, and race) were their concerns, which is why the risk model adjusted for "age, sex, race, total energy intake, education, income, food security status, smoking,...
Forum: Training & Nutrition
03-23-24, 11:10 AM
Replies: 98
Views: 4,076
Posted By RChung

Yikes. NHANES (and its predecessors) has...

Yikes.

NHANES (and its predecessors) has been around for decades. It's the basic national survey that tracks nutrition and health, much like the Census tracks population growth and distribution,...
Forum: Training & Nutrition
03-21-24, 09:37 AM
Replies: 98
Views: 4,076
Posted By RChung

Oatfiberboy.

Oatfiberboy.
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