so you thought you were a cyclist?

Woland99

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Jul 24, 2008, 4:05:14 AM7/24/08

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http://www.timesonline.co.uk/tol/life_and_style/article4374129.ece

trek 2300

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Jul 24, 2008, 6:21:26 PM7/24/08

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On Jul 24, 3:05 am, Woland99 <wolan...@gmail.com> wrote:
> http://www.timesonline.co.uk/tol/life_and_style/article4374129.ece

thanks, I think ...

It's Chris

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Jul 24, 2008, 10:33:00 PM7/24/08

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It's said that the Climb To Kaiser is comparable to som of the most
difficult mountain stages in leTour (155 miles, 13,500 ft total
climbing, maximum elevation 9175' (the start is at 375')).

I used to do this ride at a conservative 12 MPH avg. speed (8 up, 16
down). I can't imagine holding an average speed of 24 miles an hour on a
course like this.

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"Your Friendly Neighborhood Wheelman"

If you want to E-mail me use:
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Ralph Barone

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Jul 25, 2008, 12:14:29 AM7/25/08

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In article <24216-488...@storefull-3233.bay.webtv.net>,

Uh, if you averaged 8 MPH on the way up, and 16 MPH on the way down, you
certainly didn't average 12 MPH for the whole trip. Let's say that this
155 mile trip is exactly half uphill (77.5 mi) and half downhill. If
you average 8 MPH on the way up, it will have taken you 9.69 hours to go
up and 4.84 hours to go down, for a total time of 14.53 hours. Dividing
155 by 14.53 gives an average speed of 10.67 MPH. The faster you go,
the less time you have for your increased speed to affect your average.

Now, just for fun, if you averaged 10 MPH on the first half of a trip,
how fast do you have to go on the second half in order to average 20 MPH
for the entire trip?

Woland99

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Jul 25, 2008, 3:16:34 AM7/25/08

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On Jul 24, 11:14 pm, Ralph Barone <invalid@not_real.ca> wrote:
> In article <24216-48893B5C-...@storefull-3233.bay.webtv.net>,

Vavg = 155/(Tup + Tdown)
= 155/((77.5/Vup) + (77.5/Vdown))
= 2 Vup*Vdown/(Vup + Vdown)
or
(Vavg/Vup) = 2/(1 + (Vup/Vdown))
so right hand side cannot be greater than 2
for (Vup/Vdown) > 0 and for Vavg/Vup = 2 the only
possiblity is Vdown -> infinity
Which is impossible since no cyclists can exceed
the speed of light.

Brian Huntley

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Jul 25, 2008, 2:04:41 PM7/25/08

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On Jul 25, 3:16 am, Woland99 <wolan...@gmail.com> wrote:

> Which is impossible since no cyclists can exceed
> the speed of light.

Hell - I don't even exceed the speed of dark.

A seven hour day for me takes me (and my tent and my other stuff) 140
km. I've rarely ever done it unloaded.

It's Chris

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Jul 25, 2008, 8:05:34 PM7/25/08

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Damn! I didn't mean to start a flame thread.

The summit is about half way. There's actually about a mile or two
difference, we'll fudge a bit, as I don't remember the exact distances).

It takes me about 9 hours (ride time) to reach the crest. It takes me
about 4 3/4 to get back down.

77 ÷ 9 = 8.5mph

77 ÷ 4.75 = 16.2mph

155 ÷ 13.75 = 11.3mph

OK, so I'm a little off :-3)

Pat

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Jul 27, 2008, 4:16:07 AM7/27/08

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Five of our Club members did the GFC. With photos, it's at -
http://www.johnstone-wheelers.co.uk/mclean_ala.php