Handling - low or high profile tyres??
Discussion
HustleRussell said:
Essentially I agree but please stop using this word. I don't see how a tyre can exacerbate any input from the driver, only attenuate it to a lesser or greater degree.
Nope, I stand by my use of the word exacerbate in this context.TheJimi said:
exacerbate
Further, to attenuate is to reduce, so how does that work when describing the effect of aggressive steering inputs on low profile tyres?
I'll give an example.
Driver makes a sudden steering input
a solid rubber tyre will transfer this input to the tread pretty much instantly
a soft, under-inflated tyre will flex and will be slow to transfer the full effect of the input
No tyre will make an agressive input 'worse', as that is basically the definition of the word exacerbate.
Driver makes a sudden steering input
a solid rubber tyre will transfer this input to the tread pretty much instantly
a soft, under-inflated tyre will flex and will be slow to transfer the full effect of the input
No tyre will make an agressive input 'worse', as that is basically the definition of the word exacerbate.
HustleRussell said:
I'll give an example.
Driver makes a sudden steering input
a solid rubber tyre will transfer this input to the tread pretty much instantly
a soft, under-inflated tyre will flex and will be slow to transfer the full effect of the input
No tyre will make an agressive input 'worse', as that is basically the definition of the word exacerbate.
If you read back on my posts, you'll note that Kawasicki was taking about how low profile tyres were "better" for aggressive inputs. Driver makes a sudden steering input
a solid rubber tyre will transfer this input to the tread pretty much instantly
a soft, under-inflated tyre will flex and will be slow to transfer the full effect of the input
No tyre will make an agressive input 'worse', as that is basically the definition of the word exacerbate.
My assertion was that if a driver's default style was an aggressive one (which is inherently undesirable, imo) then low profile tyres aren't ideal since they would exacerbate those already needlessly aggressive inputs.
Exacerbate means to worsen an already undesirable situation, hence, my use of the word in this context is valid.
Semantics I know, but you said
TheJimi said:
low profile tyres will exacerbate those inputs.
They won't. The input comes from the driver. I think what you meant to say is that a low profile tyre would exacerbate the effects of agressive inputs, i.e. conduct them more immediately, or attenuate them less. HustleRussell said:
Semantics I know, but you said
I disagree, but I can't be bothered arguing the toss any more.TheJimi said:
low profile tyres will exacerbate those inputs.
They won't. The input comes from the driver. I think what you meant to say is that a low profile tyre would exacerbate the effects of agressive inputs, i.e. conduct them more immediately, or attenuate them less. So let's just agree to disagree.
Edited by TheJimi on Friday 11th September 17:04
E65Ross said:
Dog Star said:
F1 cars have high sidewalls. Says it all for me.
No it doesn't. They're large because of rules. It's already been stated that they'd be better with smaller side walls as they currently use the tyre side wall flex as a further suspension component. kambites said:
It would be interesting to know what they'd like to do in terms of wheel size if they were restricted to the materials that average road car wheels are typically made of but were not restricted in terms of diameter.
It would, I suppose it'd depend mostly on what the tyre manufacturer could come up with, but I wouldn't be surprised if we ended up closer to the proposed 18" wheels than to the current 13" ones. As you know F1 is a very very aero dependant formula and as such the primary focus for the chassis group seems to be 'stable aero platform'. I'd actually like that to change. Not just the dive and squat either, but presumably the side-to-side flex of the tyre changes the airflow around the car in the corners compared to on the straights, and I suppose this'd be very difficult to get a handle on in a wind tunnel.
Probably things like that which are the reason for all of these heath robinson aero sensors and flowviz paint in testing.
Oh and another, less air volume in the tyre would mean a smaller tyre pressure bracket between hot and cold... I guess they use inert gas (nitrogen?) anyway but even so...
Probably things like that which are the reason for all of these heath robinson aero sensors and flowviz paint in testing.
Oh and another, less air volume in the tyre would mean a smaller tyre pressure bracket between hot and cold... I guess they use inert gas (nitrogen?) anyway but even so...
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