|
|
|
|
|
|
by RaceWon
1965 days ago
|
|
|
>> Anyway, big rigs have loose steering because they need precision at highway speeds. The opposite is actually true. Big rigs have loose steering so that the driver will Not jack knife the truck in a panic situation. A tighter steering rack is Much more precise. Street tires, and especially racing tires, work best (have the most grip) at very narrow slip angles. Here's a Wikipedia about the "friction circle" as racers call it. "https://en.wikipedia.org/wiki/Circle_of_forces#:~:text=From%..." Here's a Great video shot at the Nürburgring showing an astonishing lap record of the Porsche 919 Hybrid race car, precision personified... Enjoy! "https://www.youtube.com/watch?v=PQmSUHhP3ug" |
|
|
Semi’s air suspension seats bounce around quite a bit which prevents them from keeping their hands steady. So, they need to dampen the input from such motions at highway speeds as race car style steering with would be counter productive in terms of precision. Which is why they have to turn the wheel so much.
It’s also useful for mechanical leverage should power steering go out.