On Wednesday, June 12, 2013 10:54:16 AM UTC-4, iBoaterer wrote:
In article ,

says...



On Wednesday, June 12, 2013 10:04:24 AM UTC-4, iBoaterer wrote:



So, you now have a car with 4 times the mass using about the

same tire contact area as the motorcycle.



BS. Cite?



http://www.porsche.com/international/models/911/911-

carrera/featuresandspecs/

(140kg laden weight)



http://en.wikipedia.org/wiki/Ducati_848

(Dry weight 370 pounds, so if you take it's laden weight of say 600

pounds we're close)



BTW... like many sports and race cars, my old Boxster's rear tires had a lot of camber to allow the tire to have better contact with the road when in a high speed turn. Wears out the inside edge quickly, but increases grip dramatically. That big, flat patch of rubber stays on the pavement.



Bikes can't have flat surfaced tires, so their contact patches are very small all the time.



Oh, now you want to talk specialty cars, but street motorcycles!!!!!

Well, the contact are for a road course motorcycle is large as well for

just that purpose. Plus, you've forgotten that pesky physical fact that

you are trying to turn 4 or 5 times the mass of something that wants to

go straight.

No, the facts (lap times) I posted were for race cars and race bikes, on the same course, and the cars were faster. The contact patch is more than 4 or 5 times larger for the road course car. And the Boxster is no more a "specialty" car than the average crotch rocket is a specialty bike. They are both built to handle and go fast, but are street legal.