On Tue, 24 Nov 2015 21:00:59 +0000, Mrcheerful wrote:
>>> Too wet again to play today, but from what I remember the handbrake
>>> acts on the main pads via a lever of some descripton on the bottom of
>>> the caliper. Certainly no inner drum.
>> Reminds me of the CX which had completely separate pads, about 25 mm
>> diameter, acting on the front disks.
> A Citroen rolled into my car one night, the handbrake had been applied
> normally, but as it all cooled/hydraulic suspension sagged down, the
> handbrake released enough for the car to go off on its own.
Happens on anything with handbrake pads clamping a disk - especially
where they're on the front, since the disk gets hotter than the rear.
It's just that for a long time Citroen were just about the only
mainstream manufacturer to use disks all round, and one of the VERY few
to use front handbrakes. They needed to use front handbrakes, because the
wheelbase changed as the suspension sank.
Drum - the brake cools, the drum contracts, the handbrake grips tighter.
Disk - the brake cools, the disk contracts, the handbrake slackens.
There was a recall on the Xantia for cars going walkies as the disk
cooled - all that was done was the first couple of teeth on the handbrake
lever were removed, so that you were "encouraged" to pull the lever on
properly...