Originally Posted by shittyarsedmonk
Yeah, come to think of it i've read about tyre slip before, but more with cornering.
Anytime your tyre is "working" you have slip.
So that includes cornering, braking, accelerating and even applying power to keep a speed (obviously higher speed needs more power = more slip)
If you are applying a force from the tyre in a direction, then you also have slip in that direction.
This is not the same as a lockup and slide. But there is always a small percentage of slide while getting traction!
Interesting about the tyre circumference, considering it more like a tank track that has to roll it's full length rather than a decreased rolling raduis.
Yes thats pretty much how to think of it!
Lots of people get hung up on the "radius changes", but that is also the reason you cant use the circle rule.
And more tyres (both car and bike) are designed to keep roughly a constant circumference even when they "contact patch"
There is some change - and some "detect flat" systems use that.
But its a lot smaller change than you would think just looking at the change in radius.
Yeah Im a geek!
Got degrees in engineering and mathematics and done a couple of years of physics.