T
Tom Kunich
Guest
"Simon Brooke" <[email protected]> wrote in message
news:[email protected]...
> in message <[email protected]>,
> [email protected] (' [email protected]') wrote:
>
>> On Jun 20, 12:26 am, [email protected] wrote:
>>> On Jun 20, 9:02 am, Jenko <[email protected]> wrote:
>>>
>>> > [email protected] wrote:
>>>
>>> > > As a general rule, the time-minimizing strategy given a constraint
>>> > > on the total number of joules is to adjust your pace so you go a bit
>>> > > harder [...] into a headwind, and go a bit easier [...]
>>> > > with a tailwind.
>>>
>>> > Is that true? I thought the power-speed curve was more linear with a
>>> > tailwind, so that an extra effort there leads to a bigger speed
>>> > increase than when into a headwind.
>>>
>>> That's true, but in this case the issue is that there's another
>>> constraint: the course distance is fixed, too. That means that on an
>>> out-and-back you spend less time on the tailwind leg than on the
>>> upwind leg.
>>
>> Tell me Robert, could you do a 40 kph 10K?
>
> With 60Km/h of wind behind me I could. Or if the start was one thousand
> metres higher than the end. If it's an out-and-back, then no - at least,
> not without some very peculiar weather.
Well, my point is sort of that Joe is a great deal more likely to have
better judgement in this matter than Robert, you or I.
news:[email protected]...
> in message <[email protected]>,
> [email protected] (' [email protected]') wrote:
>
>> On Jun 20, 12:26 am, [email protected] wrote:
>>> On Jun 20, 9:02 am, Jenko <[email protected]> wrote:
>>>
>>> > [email protected] wrote:
>>>
>>> > > As a general rule, the time-minimizing strategy given a constraint
>>> > > on the total number of joules is to adjust your pace so you go a bit
>>> > > harder [...] into a headwind, and go a bit easier [...]
>>> > > with a tailwind.
>>>
>>> > Is that true? I thought the power-speed curve was more linear with a
>>> > tailwind, so that an extra effort there leads to a bigger speed
>>> > increase than when into a headwind.
>>>
>>> That's true, but in this case the issue is that there's another
>>> constraint: the course distance is fixed, too. That means that on an
>>> out-and-back you spend less time on the tailwind leg than on the
>>> upwind leg.
>>
>> Tell me Robert, could you do a 40 kph 10K?
>
> With 60Km/h of wind behind me I could. Or if the start was one thousand
> metres higher than the end. If it's an out-and-back, then no - at least,
> not without some very peculiar weather.
Well, my point is sort of that Joe is a great deal more likely to have
better judgement in this matter than Robert, you or I.