hydroplaning

[Huw Powell]

> This discussion is interesting - NAC - but interesting and so far no one
> has insulted anyone else...so far....:)
> 
> Looking at a different example...how does a bike weighing say, 25 lbs,
> having 2 tires pumped up to 90psi exert 180psi on 2 little contact
> patches where the rubber meets the ground?  At 90 psi those tires are
> gonna be firm with very little contact patch.

I assume you mean when no one is on the bike?

25 pounds/2 (assuming equal weight distr.) = 12.5 per tire

90 p/si = 12.5 p / "x" si

90 x = 12.5

x = 12.5/90 = .138 approx sq in.

just over an eighth of a square inch per tire, yes, I'd call that small.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/