[Yak] slick tires and lousy surfaces

[Tony Raven]

Since the minimum velocity for the onset of hydroplaning is, in mph, 9x
the square root of the tire pressure in psi (7.7x for a locked wheel)
its unlikely that you will ever manage it on a bicycle.  To hydroplane
at 18mph you would need a tyre pressure lower than 4psi and its pretty
difficult to cycle that fast in the wet on tyres that flat ;-)

Tony

> Date: Thu, 16 Apr 2009 13:02:05 -0400
> From: "John S. Allen" <jsallen at bikexprt.com>
> Subject: Re: [Yak] slick tires and lousy surfaces
> 
> That's once, in 45 years since I got my driver's license. Never, in 
> 55 years of bicycling.
> 
> John S. Allen
>