[rescue] Sun Netra = Ultra 2?

Sheldon T. Hall shel at tandem.artell.net
Sat Dec 9 17:02:23 CST 2006

C Fernandez ...
> Sheldon T. Hall wrote:
> > Yep.  A rubber-covered button on the floor, instead of a 
> > pedal.  It didn't
> > move perceptably; instead of applying more brakes when you 
> > pushed farther,
> > it applied more brakes when you pushed harder.
> Any idea how that worked?

Not really.

If I were doing it, though, I'd have a dual-chanbered valve body connected
to both the the control (low-pressure) side of the hydraulic system, and the
working (high-pressure) side.  The top part of the valve body would modulate
the control flow, while the lower part of the body would provide
backpressure from the working flow.  The valve would move a little bit, but
the main sensation would be its pressing back against your foot more
strongly as you pressed against it more strongly.

I've seen a diagram of the thing, ages and ages ago, but I've never seen one
separate from the car, much less taken one apart, so the above is really
just surmise on my part.

The Wikipedia article (http://en.wikipedia.org/wiki/Citro%C3%ABn_DS) is an
excellent run-down on the car's major features and impact, but doesn't say
much about the brakes.

I've never owned one, though I've always wanted to.  I used to know a chap
in Atanta who had several of them.  At one point, I think he had "one of
each" of the big ones running, i.e. an ID, a DS, and an SM.


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