On 08/08/2013 18:35, harryagain wrote:
"Nightjar" wrote in message
...
On 08/08/2013 06:30, harryagain wrote:
"bert" ] wrote in message
...
In message , Bob Eager
writes
On Tue, 06 Aug 2013 17:28:27 +0100, harryagain wrote:

Reading one of SWMBO's crime novels.

The victim is murdered by cutting a car brake line.
Though it was a pre dual circuit car I reckon I would know the instant
I
wnet to start the engine there was a fault as I always put my foot on
the brake. Even without that, there are few circumstance wher nor
having a foot brake would kill you.
I can't think of a single way to sabotage a car to guarantee death
short
of explosives.

There's the BMW serial bus hack via the tyre pressure sensors on the
older ones.

Then tell the car to accelerate hard, and put ONE front brake on.



Back in eh 60s some apprentices at an aircraft factory designed an a
antitheft system for the wages van. Unless a hidden switch was flicked
within 3 minutes of starting up the engine would cut out and the
steering
would go hard right. Needless to say they were told to take it off.


Obvious urban myth.
How would the steering in a 1960's car be made to go hard right?

If it had rack and pinion steering, add an hydraulic cylinder from the
landing gear of one of the aircraft. For any sort of steering, fit a large
motor to the steering column, using a worm drive to prevent anyone from
being able to resist it.

So how would the steering wheel be turned whilst the motor was unenergised/...

The drive would be disconnected under normal conditions and engaged with
a dog clutch when required. However, bearing in mind this was something
thought up by engineering apprentices, it would probably have ended up
being something far more complex.

Colin Bignell