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Re: [Phys-l] How "Compressive" is Defined. (was tire q...)



The airline concern is silly. I've certainly 'done' the experiment--blowing out a tire by overpressurizing (using gas-station air to fill bike tires as a kid). They just go 'poof' and leak the small volume of air contained. A full 32 psi overpressure is not a huge percentage overpressure for bike tires. I also am told, that car tires can usually withstand very large overpressures as well.

Rick

----- Original Message ----- From: "Brian Whatcott" <betwys1@sbcglobal.net>
To: "Forum for Physics Educators" <phys-l@carnot.physics.buffalo.edu>
Sent: Tuesday, November 13, 2007 12:53 PM
Subject: Re: [Phys-l] How "Compressive" is Defined. (was tire q...)


At 07:11 AM 11/13/2007, you wrote:
On Nov 13, 2007, at 1:16 AM, carmelo@pacific.net.sg wrote:
> There is also no agreement among airlines whether bicycle's tyres
> should be deflated... Some fear that tyres may explode at low pressure
> and damage the aircraft fuselage.
>
> For example, Qantas requires the tyres to be deflated. British Airways
> suggests "You may wish to deflate the tyres to reduce risk of damage".
> United Airlines' requirement is "The bicycle must be contained in a
> protective/durable case, bag or box." Northwest Airlines merely
> recommends bicycles to be placed in a bike box.