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-   -   Average Speed Usually Isn't (https://www.bikeforums.net/road-cycling/970657-average-speed-usually-isnt.html)

rpenmanparker 09-09-14 11:22 AM

OP's position is diametrically opposed to common sense. Either riding at the same time or at different times the elapsed time method is useless for comparison, because there is no way to guarantee everyone catches the same lights, sees the same traffic, spends the same amount of time at the rest stop. There is no way to fairly compare two riders' performance using total elapsed time. Moving time is not at all perfect, but it is much better. At least you are comparing riders' performance without random disturbances that may affect some, but not others.

on the path 09-09-14 11:25 AM


Originally Posted by achoo (Post 17114650)
Once stops are thrown into the mix, average speed - no matter how you calculate it - is utterly worthless. The time spent recovering makes for a ride that places completely different metabolic demands on you - you're effectively doing an interval workout with complete rest in between the intervals. That is NOT the same as a truly non-stop ride.

You go faster than your sustainable speeds during intervals, and slower during rest periods. A ride with stops is exactly the same as that.

:thumb:

RPK79 09-09-14 11:27 AM


Originally Posted by achoo (Post 17114734)
All of which ignore the fundamental problem that an interval ride is different from a steady ride.

Which is exactly why average speed as a benchmark is only worthwhile over a specific segment when using it to gauge performance against others or yourself. Just like, basically, everyone in this thread has been saying from the beginning.

-Industry standard for average speed calculations is based of Moving Time

-To compare yourself against others you MUST use the same Standard of Measure (regardless of if you think it is the best measure)

-Comparing average speed is only meaningful over the exact same segment (and even then it is flawed due to variables)

...and as has been stated you are not likely to get a better result stopping and starting in an attempt to go harder with full rest periods between. It is inefficient and will wear you down, but you're welcome to try to 'game the system' if you want. Other than Strava KOMs you will only be giving yourself bad data so have at it.

RPK79 09-09-14 11:29 AM


Originally Posted by rpenmanparker (Post 17114764)
OP's position is diametrically opposed to common sense. Either riding at the same time or at different times the elapsed time method is useless for comparison, because there is no way to guarantee everyone catches the same lights, sees the same traffic, spends the same amount of time at the rest stop. There is no way to fairly compare two riders' performance using total elapsed time. Moving time is not at all perfect, but it is much better. At least you are comparing riders' performance without random disturbances that may affect some, but not others.

It puts a bad taste in my mouth to say it but.... I agree with [MENTION=183557]rpenmanparker[/MENTION].

:cry:

halfspeed 09-09-14 11:40 AM

http://ia.media-imdb.com/images/M/MV...14,317_AL_.jpg

furiousferret 09-09-14 11:42 AM

Speed isn't a very good benchmark just due to outside variables. Most of my fastest times over my main course I ride are because I have a wheel to draft, a tailwind, or the lights behave. Any time stopped is a negative, no matter how winded you are (unless you aren't very fit).

halfspeed 09-09-14 11:48 AM

http://cbsnews1.cbsistatic.com/hub/i...0603190293.jpg

halfspeed 09-09-14 11:49 AM

http://upload.wikimedia.org/wikipedi...rinze_1975.JPG

RPK79 09-09-14 11:51 AM


Originally Posted by achoo (Post 17114734)
All of which ignore the fundamental problem that an interval ride is different from a steady ride.

Well get your data together and draft a letter for Strava, Map My Ride, Endomond, Cat Eye, Garmin, et al...

rpenmanparker 09-09-14 11:52 AM


Originally Posted by RPK79 (Post 17114791)
It puts a bad taste in my mouth to say it but.... I agree with @rpenmanparker.

:cry:

What's that Humphrey Bogart says to Claude Rains at the end of "Casablanca"? Or do I presume too much? LOL

WhyFi 09-09-14 12:02 PM

http://www.hollywoodreporter.com/sit...ed_armisen.jpg

woodcraft 09-09-14 12:30 PM

1 Attachment(s)
http://bikeforums.net/attachment.php...hmentid=404941

WhyFi 09-09-14 12:46 PM

http://images.fandango.com/MDCsite/i...09/freddie.jpg

heffdiddy 09-09-14 01:03 PM


Originally Posted by on the path (Post 17114773)
:thumb:

Why don't you shut everyone up and post your average speed? Moving and elapsed would be great. Thanks.

achoo 09-09-14 02:24 PM


Originally Posted by RPK79 (Post 17114866)
Well get your data together and draft a letter for Strava, Map My Ride, Endomond, Cat Eye, Garmin, et al...

Oh, goodie. E-wang sites that make money off cat 6 MUP racers with excess ego who argue over the nuances of which average speed is best to compare e-wangs and whether or not waving is a good idea.

If you really want to compete, get a license, pin on a number, and COMPETE.

RPK79 09-09-14 02:27 PM


Originally Posted by achoo (Post 17115346)
Oh, goodie. E-wang sites that make money off cat 6 MUP racers with excess ego who argue over the nuances of which average speed and whether or not waving is a good idea.

If you really want to compete, get a license, pin on a number, and COMPETE.

I see. These sites are the only place where you would be comparing average times to other users. So you're not arguing for everyone to move from Moving Time Average to Elapsed Time Averages, you're just arguing.

RPK79 09-09-14 02:28 PM


Originally Posted by RPK79 (Post 17115362)
I see. These sites are the only place where you would be comparing average times to other users. So you're not arguing for everyone to move from Moving Time Average to Elapsed Time Averages, you're just arguing.

In other words you're flapping your 'e-wang' around trying to hit someone with it.

achoo 09-09-14 02:51 PM

I'd be more accurate to state that I find the argument over which flavor of average speed is more correct to be risible and would be more appropriately conducted like this:


Again, average speed is something YOU have been arguing over. I'm just dropping in for amusement value.

caloso 09-09-14 02:54 PM

It's early yet, but this thread shows promise as a candidate for the 41 Hall of Fame.

on the path 09-09-14 02:56 PM


Originally Posted by heffdiddy (Post 17115099)
Why don't you shut everyone up and post your average speed? Moving and elapsed would be great. Thanks.

You could start another thread. You might want to call it "The True Average Speed Pissing Contest", and add a note that fudging and manipulation of data is welcome and encouraged..:p

RPK79 09-09-14 02:57 PM


Originally Posted by achoo (Post 17115448)
I'd be more accurate to state that I find the argument over which flavor of average speed is more correct to be risible and would be more appropriately conducted like this:


Again, average speed is something YOU have been arguing over. I'm just dropping in for amusement value.

Yes, I assumed you were a troll since your argument was idiotic. Just like I assume the OP is a troll. I'm just throwing troll food out because it's funner than doing my actual work at the office. Plus I'm right.

halfspeed 09-09-14 03:03 PM

http://cdn.fansided.com/wp-content/b...03/5723054.jpg

achoo 09-09-14 03:09 PM


Originally Posted by RPK79 (Post 17115480)
Yes, I assumed you were a troll since your argument was idiotic. Just like I assume the OP is a troll. I'm just throwing troll food out because it's funner than doing my actual work at the office. Plus I'm right.

Yep, my argument is idiotic. And you're right.

:roflmao2:

So, when you record your average speed for any ride, do you also record the barometric pressure and humidity? Or are you arguing over the nuances of measuring average speed while ignoring something that can cause air drag to vary by up to 10% or so?

Did you know that?

Why am I assuming the answer is a resounding, "NO!"

RPK79 09-09-14 03:14 PM


Originally Posted by achoo (Post 17115516)
Yep, my argument is idiotic. And you're right.

:roflmao2:

So, when you record your average speed for any ride, do you also record the barometric pressure and humidity? Or are you arguing over the nuances of measuring average speed while ignoring something that can cause air drag to vary by up to 10% or so?

Did you know that?

Why am I assuming the answer is a resounding, "NO!"

:rolleyes:

wphamilton 09-09-14 03:19 PM


Originally Posted by caloso (Post 17115459)
It's early yet, but this thread shows promise as a candidate for the 41 Hall of Fame.

It has potential but let's not jinx it.


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