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by RChung
Replies
44
Views
1,607

More Steeps Of San Francisco ? A New Steepest...

More Steeps Of San Francisco ? A New Steepest Street Is Born

by RChung
Replies
25
Views
694

Close, but not exactly. It was really the...

Close, but not exactly. It was really the invention of the triathlon bike.

by RChung
Replies
11
Views
419

I agree, and I've had a fair amount of experience...

I agree, and I've had a fair amount of experience with power meters, power meter data quality, and seeing riders improve.

Wireless data is no better and (depending on the exact model) is often...
4. Thread: power meter, would it be overkill for me

by RChung
Replies
36
Views
1,174

Woah. While they had you open did they stick in...

Woah. While they had you open did they stick in any sort of cardioverter?

Sounds like for you, a power meter ain't overkill at all and that now that you have a way to know your power, at best...
5. Thread: power meter, would it be overkill for me

by RChung
Replies
36
Views
1,174

If he had a double cardiac bypass his problem was...

If he had a double cardiac bypass his problem was cardiac ischemia, not something like an arrhythmia. HR simply tells you how often the heart beats, not how patent his coronaries were.
6. Thread: Low TE, high IF

by RChung
Replies
71
Views
931

In R I use...

In R I use
max(filter(filter(watts,rep(1/30,30))^4,rep(1/1200,1200))^0.25,na.rm=T)

In Excel I guess you could load watts into column A, put a 30-second running mean in column B, put the 4th power...
7. Thread: Low TE, high IF

by RChung
Replies
71
Views
931

TSS = (ride duration in hours) * IF^2 * 100 ...

TSS = (ride duration in hours) * IF^2 * 100

(ride duration in hours) = TSS/(IF^2 * 100) = 56/(1.45*100) = 0.38 hours = 23 minutes
8. Thread: Low TE, high IF

by RChung
Replies
71
Views
931

Well, I'm not sure I'd say "a watt or two." I'd...

Well, I'm not sure I'd say "a watt or two." I'd say a few watts. It depends on the course. The last time I did a one hour TT, it was on a rolling course with a little bit of head, tail, and cross...
9. Thread: Low TE, high IF

by RChung
Replies
71
Views
931

Golden Cheetah automatically calculates xP (which...

Golden Cheetah automatically calculates xP (which is a variant of NP). I don't remember if it automatically calculates max 20 minute anything -- it doesn't usually think there's anything special...
10. Thread: Low TE, high IF

by RChung
Replies
71
Views
931

It's really not that hard, you know.

It's really not that hard, you know.
11. Thread: Low TE, high IF

by RChung
Replies
71
Views
931

You guys are getting pretty far down into the...

You guys are getting pretty far down into the weeds.

Because of details in the way it's constructed, over short periods of time (like, maybe under 10 minutes or so) NP can be less than average...
12. Thread: Low TE, high IF

by RChung
Replies
71
Views
931

Yes, though it will depend on how well the curve...

Yes, though it will depend on how well the curve is filled out with efforts that were truly maximal for each duration (or, at least, the durations that the GC algorithm uses for estimation). It's a...
13. Thread: power meter, would it be overkill for me

by RChung
Replies
36
Views
1,174

Well, I agree with your last sentence, but there...

Well, I agree with your last sentence, but there are many paths to enlightenment and not everyone's path is reading a book. I don't think reading a math textbook is a particularly good way to tell if...
14. Thread: power meter, would it be overkill for me

by RChung
Replies
36
Views
1,174

Go easy on him. Has he ever even ridden a fixed...

Go easy on him. Has he ever even ridden a fixed gear?
15. Thread: Low TE, high IF

by RChung
Replies
71
Views
931

That's not a particularly demanding usage, so you...

That's not a particularly demanding usage, so you can probably either do a formal test or you can eyeball it. If you were racing ITTs you'd probably want a better estimate but tracking training load...
16. Thread: Low TE, high IF

by RChung
Replies
71
Views
931

How much accuracy in FTP do you need? I...

How much accuracy in FTP do you need?

I hardly ever do formal FTP tests any more because I don't need much accuracy. I do eyeball the running evolution of my CP (or, one estimate of it) and if I...
17. Thread: Accuracy of Strava power estimates.

by RChung
Replies
33
Views
782

How accurate is calculated power / calories? ?...

How accurate is calculated power / calories? ? Dave McCraw
18. Thread: power meter, would it be overkill for me

by RChung
Replies
36
Views
1,174

So you think I'd benefit from reading it? Hmmm....

So you think I'd benefit from reading it? Hmmm. Maybe I should.
19. Thread: power meter, would it be overkill for me

by RChung
Replies
36
Views
1,174

I'm not sure that's a very good test. I've never...

I'm not sure that's a very good test. I've never been able to get through that book.
20. Thread: Flappy jersey: just how much do they effect performance?

by RChung
Replies
35
Views
944

I recently looked at some comparisons of...

I recently looked at some comparisons of different skin suits. The rider was trying to set a new hour record and we thought it was going to be very, very close so we had to examine everything pretty...
21. Thread: Flappy jersey: just how much do they effect performance?

by RChung
Replies
35
Views
944

Depends on your starting point but actually I'd...

Depends on your starting point but actually I'd say you're off by more than an order of magnitude. I'd say the ballpark is 1 sec/km for a flat TT. Whether anyone considers that significant or...
22. Thread: Flappy jersey: just how much do they effect performance?

by RChung
Replies
35
Views
944

Hmmm. I do.

Neither do we.[/QUOTE]
Hmmm. I do.
23. Thread: Climbing the Sierra Pass experiences

by RChung
Replies
12
Views
344

Sonora Pas is ~9600 feet, about 300 ft lower than...

Sonora Pas is ~9600 feet, about 300 ft lower than Tioga.

[Edited to add:] I've never done Sonora but I've done Tioga on probably about the same volume of riding as you. However, that was when I...
24. Thread: How useful is a HRM when you have power?

by RChung
Replies
208
Views
3,805

It's only complicated if you think to yourself,...

It's only complicated if you think to yourself, "I paid a buttload of money for this stuff so I want the data to be of high quality." Most people don't think about it so they're pretty blissful just...
25. Thread: How useful is a HRM when you have power?

by RChung
Replies
208
Views
3,805

Yeah, that's why matching on time stamp isn't...

Yeah, that's why matching on time stamp isn't always very useful. The ANT+ protocol allows the power meter to broadcast 4x per second and the receiving head unit to record at once per second -- so...
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