Wrapper

"Gord Beaman" <gord@islandtelecom.com> wrote in message
news:qq7v72papsba9fjondtgdjgth7qhn3lm6k@4ax.com...[color=blue]
> Viperkiller <nothing@nothing.net> wrote:
>[color=green]
>>On Tue, 30 May 2006 16:39:23 -0700, "Jeff Strickland"
>><crwlr@yahoo.com> wrote:
>>[color=darkred]
>>>Braking force on any system is distributed about 60/40 front to rear.
>>>This
>>>explains why one goes through front brakes at a roughly 2:1 ratio over
>>>the
>>>back brakes.
>>>
>>>[/color]
>>It is more like 70-75%. This is true for most of the vehicles on the
>>road. The only exceptions are rear and mid-engines. Since these
>>vehicles are mostly high-performance cars (MR2, 911, NSX, 348's), they
>>have stiff suspensions that reduce weight transfer to the front.
>>These cars obviously use more of the rear brakes.[/color]
>
> I don't understand why the 'stiffness of the suspension' would
> have anything to do with 'braking distribution'...isn't that
> governed by the 'arm' of the lever effect? (how far above the
> axles the vehicle's sprung weight is)...seems to me that the
> 60/40 that I see here feels about right for any average sized
> automobile...no?.
> --
>
> -Gord.
> (use gordon in email)[/color]

Under hard braking, inertia transfers weight to the front of the vehicle.
When weight is transferred to the front of the vehicle, the springs at the
front of the vehicle are compressed and the springs at the rear of the
vehicle are stretched, compounding the effect of the weight transfer from
the inertia. If the springs are stiffer, there is less compounding of
weight transfer to the front of the vehicle.
--

Ray O
(correct punctuation to reply)