Citius
Guest
yeah, whatever...
Tyre slick formula 1
- Thread starter Viper5
- Start date
Page may contain affiliate links. Please see terms for details.
yeah, whatever...
Citius
Guest
It's not rubbish Jack.
jack smith
Veteran
- Location
- Durham
And where did i mention friction? That is you putting words into my mouth trying to be clever.
the more rubber in contact with the road the better for in regards to tread for a roadbike.
Citius
Guest
Friction gives you grip. Friction is not dependent on tyre width. I suspect that is the point that Phil is making.
PhilDawson8270
Veteran
So what are you referring to if not friction? What is your "grip"?
fossyant
Ride It Like You Stole It!
- Location
- South Manchester
He is. Tread does not clear the mulch. Tread or not on leaf mulch makes no difference.
Studded spikes do at least give a little purchase by punching through the leaves
cisamcgu
Legendary Member
- Location
- Merseyside-ish
Tread moves, that movement will definitely cause drag, but also may improve traction in difficult conditions ...
PhilDawson8270
Veteran
Not really.
The surface of the tyre will remain with the same friction, if the tread moves so much to be sliding. Then in nearly all cases, a sliding tyre has less friction than a rolling tyre.
cisamcgu
Legendary Member
- Location
- Merseyside-ish
That isn't really what I was saying, but never mind
Subotai72
Well-Known Member
- Location
- North Wales
Yeah, so anyway...I think you're good to go.
Ihatehills
Senior Member
- Location
- Cornwall
A wider tyre will have a higher coefficient of friction, that's where area comes into it ( disclaimer: I think
)
PhilDawson8270
Veteran
A wider tyre will have a higher coefficient of friction, that's where area comes into it ( disclaimer: I think
Nope
Coefficient of friction is a property between 2 materials, the surface area isn't part of it there either.
The reason why high power cars use big wide wheels isn't for grip, but for heat dissipation.
F1 is a good example, their tyres are very tightly controlled by regulations, obviously a car tyre can aquaplane so they have tread in which to clear water. Now, if you look at an intermediate tyre, they have blocks on the tyre for the tread. This pattern doesn't clear water. These are for when the surface is wet, but with no standing water, and can be used on very cold tracks too.
The blocks don't clear water, they reduce surface area, to increase the heat, to get the compound up to optimum temperature.
Surface area on tyres is used primarily to control heat, not for grip.
mjr
Comfy armchair to one person & a plank to the next
- Location
- mostly Norfolk, sometimes Somerset
My degree was statistics not mechanical mathematics, so it's a very very long time since I did stuff like this and it could be wrong: a larger surface supporting the same weight will be under a lower pressure (which is measured per unit area, after all - pounds per square inch or Newtons per metre square or whatever), which might be why contact area isn't part of the consideration and only the coefficient of friction is.
If so, then tread reducing the contact surface area isn't reducing grip and grip only reduces if the tread is so deep/knobbly that the blocks are moving around.
Ihatehills
Senior Member
- Location
- Cornwall
Nope
Coefficient of friction is a property between 2 materials, the surface area isn't part of it there either.
The reason why high power cars use big wide wheels isn't for grip, but for heat dissipation.
F1 is a good example, their tyres are very tightly controlled by regulations, obviously a car tyre can aquaplane so they have tread in which to clear water. Now, if you look at an intermediate tyre, they have blocks on the tyre for the tread. This pattern doesn't clear water. These are for when the surface is wet, but with no standing water, and can be used on very cold tracks too.
The blocks don't clear water, they reduce surface area, to increase the heat, to get the compound up to optimum temperature.
Surface area on tyres is used primarily to control heat, not for grip.
Apologies, it doesn't make much sense to me yet but I've googled enough to know That you are correct
( thinking was always gonna be a bad idea
)
PhilDawson8270
Veteran
Apologies, it doesn't make much sense to me yet but I've googled enough to know That you are correct
( thinking was always gonna be a bad idea
It is very counter intuitive but, it is true
