Stopping distances, Cars VS Bikes

[John]

Can someone explain to me why the car can stop quicker?

Thanks
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TT600 neeeeeeeeeeeeeeeeeeowwww!

[WildGoose]

more tyres, greater contact patch on each tyre, better grip

can get more braking power down before it locks

also got bigger disks and bigger calipers
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So in other words, he stopped you for being flagrantly in posession of a motorcycle in direct contravention of the Hippies, Darkies and People Whose Face I Don't Like The Look of (Police Powers) Act. 1976

[McJamweasel]

[MarJay]

If you had a light enough bike in theory you might be able to stop quicker, but its a case of controlling back end lift too. Cars have staggered brakes so that the front brakes harder than the rear (AFAIK). You don't get this on a bike cos if you brake hard enough the back wheel will lift and therefore lock.

I suppose if you had a bike with really wide tyres which weighed virtually nothing, and a skilled rider, its a possibility that you might outbrake cars (in general - the peugeot 106 GTi is meant to have one of the best braking performances of cars)... I don't know.
We need someone to test the theory.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F; Cheap project: CBR900RR FireBlade
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[flat spot]

Actually bikes do stop quicker. If I can find the article where I read it I'll let you know.

[WildGoose]

i stopped mighty quick with the assistance of a big blue van

so i guess they can...
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So in other words, he stopped you for being flagrantly in posession of a motorcycle in direct contravention of the Hippies, Darkies and People Whose Face I Don't Like The Look of (Police Powers) Act. 1976

[Kickstart]

Hi

Alot comes down to rider / driver skill, road surfaces, etc. Sometimes cars come out better, sometimes bikes do.

By the way, basic GCSE physics is that friction is not dependent on contact area.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[muppet_ninja]

from my engineering science days I can recall that there are five types of friction - static, kinetic, deformation, molecular and rolling. At least four come into play in this scenario.

When determining kinetic friction; time comes into the equation to make it more complicated.

basically if you cant stop then your in trouble