What we have learned about SPRIDGETS.
A summary of 'Help - Seemingly Incurable Brake Fade' - but it wasn't brake
fade anyway, it was a loss of fluid pressure (ROTFLMAO !!!) )
The front end steers and brakes a lot.
The back end tries to follow the front but accelerates and brakes a bit.
There is a nearly rigid bit in the middle between the front and back which
allows weight transfer.
Problems arise when all these things doesn't happen. <LOL>
Guy R Day
Ron,
You can't do that with a UK artic braking system; it is built so you cannot
isolate the trailer brakes from the cab. It shouldn't be done because it
encourages the jacknife to continue - it is that counter-intuitive thing. If
the trailer wheels are rolling it will have a chance at straightening, if they
are locked it has no chance. Look up papers from Prof. Frank NAVIN (et al)
from Columbia (?) University, he spells the math out fairly nicely.
In race car competition when the back end overtakes the front I've found it is
a little too late to play with brake balance lever and when I was in a
jacknife I released all braking, accelerated (for what it was worth) and
steered out straight after a couple of wobbles. OOhhh Panic LOL
All the best
Guy
----- Original Message -----
From: "Ron Soave" <soavero@yahoo.com>
To: <spridgets@autox.team.net>
Sent: Monday, October 05, 2009 12:49 PM
Subject: Re: [Spridgets] Help - Seemingly Incurable Brake Fade
> --- On Mon, 10/5/09, Guy R Day <grday@btinternet.com> wrote:
>> Semis have their own rules and dual rotational centres and
>
> Exactly. When a trailer starts to jacknife, you hit the emergency bar and
lock the rear wheels intentionally. On a race car, you dial in the brakes by
starting with severe front bias, and dial it backwards until the tail gets
unstable, and go back a notch towards front.
>
> Ron
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