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Old 17th July 2008, 10:29 AM   #28 (permalink)
Norman Wells
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Default Top Gear - Bullet Train

Abo wrote:
> Norman Wells wrote:
>> Abo wrote:
>>> Norman Wells wrote:
>>>> Abo wrote:
>>>>> Peter Hill wrote:
>>>>>
>>>>>> So so wrong. Motorsport quackery
>>>>>
>>>>> It's a tyre pressure thing. When you run for a few laps the tyre
>>>>> pressure changes as the heat builds up. When you fill with air
>>>>> this change can be unpredictable as the proportion of water
>>>>> vapour in the air can vary. Filling with nitrogen mans you know
>>>>> you have a dry gas inside your tyres and you can predict how the
>>>>> tyre pressures are going to change as they heat up.
>>>>
>>>> I have seldom read a more unknowledgeable account than this. Water
>>>> vapour has nothing whatever to do with tyre pressures, and nitrogen
>>>> is just as likely to contain water vapour as air is anyway.
>>>
>>> Sorry you clearly know more about oval racing than I do. Please
>>> explain to me why 48 or so NASCAR teams go to the bother of
>>> completely removing all the air from 2880 tyres and replacing it
>>> with nitrogen if it has no benefit whatsoever on the tyre
>>> pressure...

>>
>> Since it doesn't, I can't.
>>
>> Ask them.

>
> See that response below from Roger; it would appear that it does


What response below what?
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