Once upon a time on usenet keefy wrote:
> On 04/06/18 23:07, Alan Baker wrote:
>> On 2018-06-04 1:58 PM, keefy wrote:
>>> On 04/06/18 19:44, bra wrote:
>>>> Now it's 18-inch wheels. Why?
>>> Why not?
>>>> It baffles me that a highly-competitive sport pursued by brilliant
>>>> drivers and engineers is continually being 'tinkered with' by its
>>>> organizing body.
>>>> I must assume, in this instance, that there is now "something
>>>> wrong" with 13-inch wheels. Now, after sixty years of Formula One,
>>>> why did we not know that 13-inch wheels are "wrong"? Who
>>>> discovered that 13-inch wheels are "not right" for F1? Hello?
>>> A lot of people discovered it a long time ago. But as far as I
>>> understand FIA decided to create a rule that 13 inch wheels must be
>>> used to stop the teams using bigger brakes. I think that was to
>>> limit the G forces exerted of drivers though I am not certain about
>> It can't be that, because the current brakes can lock up all four
> But as you say that is with current brakes which are carbon. The rule
> to use 13 inch wheels was brought in before carbon brakes I am fairly
> sure. I cannot quote the year but from memory I would say in the 70s
> or 80s. And maybe with the old steel brakes they could not lock all 4
> wheels, I don't actually know.
With the new wider tyres with more grip (and admittedly thicker discs and
pads) as well as higher speeds this year I think some races are getting
borderline on making it to the end without having to nurse the brakes.
Leclerc had a disc failure at Monaco, Liberty seem to be very knee-jerk in
their reactions to such things...
Personally if there is to be a change I think the FIA should mandate that
the rear brakes should be pre-hybrid spec. So that if the MGU-K or control
electronics goes out the car doesn't become a danger to the driver (who
let's face it will keep pushing until it fails) and others on track. The
stopping power / thermal envelope of the rears has been reduced by quite a
bit since regenerative braking became significant to save "un-needed"
Also with the 2MJ / lap cap on how much energy can be recovered via the
MGU-K on tracks with heavy braking the rear discs have a lot more work to
do. It's the same with tracks with a long lap as the 2MJ recovery cap is
per-lap so on long-lap circuits the rear discs have to do more work.
"Humans will have advanced a long, long way when religious belief has a cozy
little classification in the DSM*."
David Melville (in r.a.s.f1)
(*Diagnostic and Statistical Manual of Mental Disorders)