Total Posts:2|Showing Posts:1-2
Jump to topic:

Different sized wheels.

AlbinoBunny
Posts: 3,781
Add as Friend
Challenge to a Debate
Send a Message
9/6/2013 10:47:12 AM
Posted: 3 years ago
What impact does fitting different sized wheels to a vehicle have, like on a car, for example? I know that it changes torque requirements and it alters the perceived speed on a speedometer, but what else?

What effect does having a larger surface area of tire on the ground have? I know there's increased grip. A cylindrical tyre has a rectangular grip surface, I believe, and a spherical "tyre" would have a circular one, I believe, so if the cylindrical grip was larger, would it have more grip? Would there be increased losses due to friction?
bladerunner060 | bsh1 , 2014! Presidency campaign!

http://www.debate.org...
http://www.debate.org... - Running for president.
http://www.debate.org... - Running as his vice president.

May the best man win!
Bullish
Posts: 3,527
Add as Friend
Challenge to a Debate
Send a Message
9/7/2013 10:06:12 PM
Posted: 3 years ago
I'm no engineer but I think this is what's happening:

The friction is caused by 2 things: the axle and the movement in the tire/tyre required to make it touch the ground. The size of the contact surface doesn't necessarily dictate the friction. Hardness of the rubber matters, for example.

Grip isn't caused by the size of the contact surface either. It's caused by the force the object and the ground are exerting on each other, and the "roughness" of the tire/tyre and the ground.
0x5f3759df